JP6238020B2 - Exhaust gas purification equipment and operation control method thereof - Google Patents

Description

  The present invention relates to an exhaust gas purification facility for purifying exhaust gas containing flammable harmful components and an operation control method thereof.

  Exhaust gas containing flammable odorous components or volatile organic compounds such as volatile organic compounds discharged from various production facilities and treatment facilities is usually made harmless by the exhaust gas treatment facility and released to the atmosphere from the viewpoint of pollution prevention. Has been. This exhaust gas treatment facility is provided with a combustion type exhaust gas purification device. For example, as described in Patent Document 1, as a combustion exhaust gas purification device, a heat storage exhaust gas purification device having a plurality of heat storage chambers, and a plurality of sets of dampers are provided in each of the plurality of heat storage chambers. Is known. In the heat storage type exhaust gas purification device, this damper is interlocked to open and close, and the exhaust gas is supplied to and discharged from the heat storage chamber to burn and remove flammable harmful components. Moreover, this heat storage type exhaust gas purification apparatus may be provided with an adsorption removal apparatus provided with an adsorbent that adsorbs flammable harmful components. The adsorption removal device adsorbs and removes flammable harmful components by the adsorbent, and supplies high temperature air to the adsorbent that adsorbs the flammable harmful components so that the flammable harmful components are contained in the high temperature air. Remove. The regenerative exhaust gas purification device is supplied with high-temperature air discharged from the adsorption removal device, and combustible harmful components are purified.

Japanese Patent Laid-Open No. 2004-77017

  However, in such an exhaust gas purification equipment, when the concentration of combustible harmful components is low and the self-combustion state does not occur, the exhaust gas must be heated and operated by a burner provided in the combustion chamber. There was a problem that the fuel cost of the high.

  Accordingly, an object of the present invention is to provide an exhaust gas purification equipment and an operation control method thereof that can reduce the fuel cost of a burner by increasing the operation time at which the combustible and harmful component has a self-combustible concentration. .

In order to achieve the above object, the present invention provides an adsorption / removal apparatus equipped with a rotary adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas, wherein the exhaust gas containing combustible harmful components is adsorbed. The adsorbent adsorbs and removes flammable harmful components from the exhaust gas, and supplies the adsorbent with high-temperature desorption air to remove the flammable harmful components adsorbed on the adsorbent. A combustion-type exhaust gas purification device for purifying the combustible harmful components by burning exhaust air containing combustible harmful components discharged from the adsorption removal device in a combustion chamber equipped with a burner, and the combustion type A blower that is provided upstream of the exhaust gas purification device and that sends exhaust air discharged from the adsorption removal device to the combustion exhaust gas purification device, and a combustion that corresponds to the concentration of flammable harmful components in the exhaust air Expulsion The temperature measuring means for measuring the temperature in the gas purifying device, and the amount of air blown by the blower and the rotational speed of the adsorber based on the measured value of the temperature measuring means, and the combustion exhaust gas from the adsorption removing device And a control device for controlling the concentration of flammable harmful components in the exhaust air sent to the purification device, and the combustion exhaust gas purification device is connected to the plurality of heat storage chambers and the plurality of heat storage chambers. A plurality of pairs of dampers provided in pairs in each of the plurality of heat storage chambers, and the exhaust air supplied from any one of the plurality of heat storage chambers in the combustion chamber. A regenerative exhaust gas purification device that burns and purifies flammable harmful components contained in the exhaust air, and further supplies exhaust air discharged from the adsorption / removal device to the combustion exhaust gas purification device. of Piping connected to the heat storage chamber, in order from the upstream of this piping, a shut-off damper that shuts off the supply of exhaust air, an outside air intake damper that takes outside air into the piping, and a piping in which a blower is provided The control device, when a plurality of sets of dampers are open at the same time, opens the outside air intake damper and takes the outside air into the pipe, closes the shut-off damper and removes the adsorption removal device from the adsorbent. to interrupt the supply of use air, by operating the outside air intake Danba and the isolation dampers, controls to Ru passed for each of the captured ambient air in an open state damper.
In the present invention thus configured, the temperature in the combustion exhaust gas purification device corresponding to the combustible harmful component concentration in the exhaust air is measured by the temperature measuring means, and the measured value of the temperature measuring means is measured by the control device. The amount of air blown by the blower and the rotational speed of the adsorbent are controlled based on the control to control the concentration of flammable harmful components in the exhaust air sent from the adsorption removal device to the combustion exhaust gas purification device. Therefore, it is possible to control the concentration of flammable harmful components in the gas sent to the combustion type exhaust gas purification device. As a result, according to the present invention, it is possible to increase the operation time at which the combustible harmful component has a concentration capable of self-combustion, so that the fuel cost of the burner can be reduced.

  In the present invention, preferably, the temperature measuring means measures each temperature of the plurality of heat storage chambers, and uses the average value as the temperature in the combustion exhaust gas purification apparatus.

  In the present invention, preferably, the temperature measuring means measures the temperature of the combustion chamber, and uses the measured value as the temperature in the combustion exhaust gas purification apparatus.

  In this invention, Preferably, the air blower is changing the rotation speed, and makes air flow variable.

  In the present invention, the control device preferably ignites and extinguishes the burner based on the temperature in the combustion exhaust gas purification device.

  In the present invention, preferably, the control device sets a plurality of concentration ratios defined by a ratio between a rated air flow rate of exhaust gas supplied to the adsorption removal device and an air flow rate blown by the blower. Corresponding to a plurality of concentration ratios, a plurality of operation condition patterns combining the rotation speed of the adsorbent and the rotation speed of the blower are set, and the operation condition patterns corresponding to a high concentration ratio are set to a plurality of operation condition patterns. Control temperature for switching the operation condition pattern and burner ignition / extinguishing based on the temperature of the combustion exhaust gas purification device set by the adsorbent and the blower so as to be low. From the low temperature side, the re-ignition temperature, the concentration rate increasing temperature, the precut temperature, the high cut temperature, and the concentration rate decreasing temperature are preset, and multiple operating condition patterns If the temperature of the combustion-type exhaust gas purification device is equal to or lower than the enrichment factor increase temperature, the operation condition pattern corresponding to a higher enrichment factor is changed and combustion is started. When the exhaust gas purification device temperature exceeds the concentration reduction rate, the operation condition pattern corresponding to the lower concentration factor is changed, the burner is ignited at the start of operation, and the temperature of the combustion exhaust gas purification device is precut. Fire extinguishes when the temperature or the high cut temperature or higher, and repeats the operation of reigniting when the temperature of the combustion exhaust gas purifier becomes lower than the reignition temperature.

In the present invention, preferably, the control device ignites the burner of the combustion exhaust gas purification device at the start of operation and extinguishes fire when the temperature of the combustion exhaust gas purification device rises to the pre-cut temperature, and the temperature up to the reignition temperature. The controller repeats the operation of reigniting when the air flow decreases, and the control device further adjusts the air flow rate of the blower so as to achieve a predetermined concentration rate when the supply amount of exhaust gas supplied to the adsorption removal device is the rated air flow rate. When setting the first set air volume, the second set air volume larger than the first set air volume, the third set air volume larger than the second set air volume, and the fourth set air volume larger than the third set air volume Furthermore, at the start of operation, when the burner is ignited and the temperature rises to the temperature rise completion temperature, the rotation speed of the blower is controlled so that the blower has the fourth set air volume. When the temperature of the blower is extinguished and then the temperature drops to the concentration increase temperature, the rotation speed of the blower is controlled so that the blower has the third set air flow, and the burner is extinguished in the state of the third set air flow, Thereafter, when the temperature drops to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower reaches the second set air volume, the burner is extinguished in the state of the second set air volume, and then the concentration rate is increased. When the temperature drops to the increased temperature, the rotational speed of the blower is controlled so that the blower has the first set air volume.

  In the present invention, it is preferable that the control device controls the rotation speed of the blower so that the blower becomes the second set air volume when the temperature rises to the concentration reduction temperature in the state of the first set air volume.

  In the present invention, preferably, the control device includes a hot bypass damper provided so as to communicate the combustion chamber and the outside air at a temperature equal to or higher than a proportional control start temperature at which the temperature of the combustion exhaust gas purification device is set higher than the precut temperature. When it becomes, it will be in the open state.

The present invention is an adsorption / removal device equipped with a rotary adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas, and supplying the exhaust gas containing combustible harmful components to the adsorbent, From the adsorption and removal device that adsorbs and removes the flammable harmful components from the exhaust gas, and supplies high-temperature desorption air to the adsorbent to desorb the flammable harmful components adsorbed on the adsorbent. Combustion-type exhaust gas purification device that purifies the combustible harmful components by burning exhaust air containing combustible harmful components that are discharged in a combustion chamber equipped with a burner, and provided upstream of the combustion-type exhaust gas purification device The exhaust air exhausted from the adsorption removal device is sent to the combustion exhaust gas purification device, and the temperature of the combustion exhaust gas purification device corresponding to the concentration of combustible harmful components in the exhaust air is variable. measurement A temperature measuring unit that, the, the combustion exhaust gas purifying device, a plurality of regenerator, and includes the connected combustion chamber in these plurality of regenerator, each of these plurality of regenerator Plural sets of dampers provided in pairs are opened and closed in conjunction with each other, and exhaust air supplied from one of the multiple heat storage chambers is combusted in the combustion chamber to purify combustible harmful components contained in the exhaust air A heat storage type exhaust gas purification device that supplies exhaust air discharged from the adsorption removal device to the combustion type exhaust gas purification device, and is connected to each heat storage chamber of the heat storage type exhaust gas purification device. The operation control method of the exhaust gas purification equipment has a shut-off damper that shuts off the supply of exhaust air, an outside air intake damper that takes in outside air into the pipe, and a pipe in which the blower is arranged in order from the upstream side of the exhaust gas. And warm By controlling the rotational speed of the air volume and the adsorbent that is blown by the blower based on the measurement values of the measuring means, controlling the concentration of combustible harmful components in the exhaust air fed to the combustion exhaust gas purifying apparatus from the adsorption removing device Furthermore, when a plurality of sets of dampers are opened simultaneously, the outside air intake damper is opened, the outside air is taken into the pipe, the shutoff damper is closed, and desorption air is supplied to the adsorption body of the adsorption removal device. The outside air intake damper and the shut-off damper are operated so that the intake air is passed through each of the open dampers .

  In the present invention, preferably, the number of rotations of the adsorbent and the above-described number of times corresponding to a plurality of concentration ratios defined by the ratio of the rated blast volume of exhaust gas supplied to the adsorption removal apparatus and the blast volume blown by the blower A plurality of operation condition patterns combined with the rotation speed of the blower are set in advance, respectively, and the operation condition patterns corresponding to the higher concentration ratio, the rotation speed of the adsorbent, and the rotation speed of the blower are set in advance. As a control temperature for switching the operating condition pattern and burner ignition / extinguishing based on the measured temperature, from the low temperature side, the re-ignition temperature, the concentration increase temperature, the precut temperature, the high cut temperature, and the concentration rate are set. The temperature reduction is set in advance, and the operation is started based on the operation condition pattern selected in advance from the plurality of operation condition patterns. If the temperature is lower than the concentration factor increase temperature, change to an operation condition pattern corresponding to a higher concentration factor and control it. If the measured temperature exceeds the concentration factor decrease temperature, correspond to a lower concentration factor. The burner is ignited at the start of operation, extinguished when the measured temperature exceeds the pre-cut temperature or high-cut temperature, and restarted when the measured temperature falls below the re-ignition temperature. Repeat the action to be ignited.

  In the present invention, preferably, the burner of the combustion type exhaust gas purification apparatus is ignited at the start of operation, and is extinguished when the temperature rises to a predetermined precut temperature, and the temperature is lowered to a predetermined reignition temperature. When it is assumed that the amount of exhaust gas supplied to the adsorption / removal device is the same as the planned amount, the concentration rate planned for normal operation will be the same. The air volume of the air blower is set as the first set air volume, the second set air volume larger than the first set air volume, the third set air volume larger than the second set air volume, and the fourth set air volume larger than the third set air volume are set. When the operation is started, when the burner is ignited and the temperature rises to the temperature rise completion temperature, the rotation speed of the blower is controlled so that the blower has the fourth set air volume, and in the state of the fourth set air volume, When the burner is extinguished and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower has the third set air volume, and the burner is extinguished in the state of the third set air volume. Then, when the temperature decreases to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower has the second set air volume, and the burner is extinguished in the state of the second set air volume. When the temperature drops to the increased temperature, the rotational speed of the blower is controlled so that the blower has the first set air volume.

It is a whole lineblock diagram showing exhaust gas purification equipment by an embodiment of the present invention. It is a block diagram which shows the control apparatus of the exhaust gas purification equipment by embodiment of this invention. It is a flowchart which shows the operation control method of the exhaust gas purification equipment by embodiment of this invention. It is a flowchart which shows the operation control method of the exhaust gas purification equipment by embodiment of this invention. It is a flowchart which shows the operation control method of the exhaust gas purification equipment by embodiment of this invention. It is a flowchart which shows the operation control method of the exhaust gas purification equipment by embodiment of this invention. It is explanatory drawing which shows an example of the operation control in the operation control method of the exhaust gas purification equipment by embodiment of this invention. It is a whole schematic diagram which shows the exhaust gas purification equipment by other embodiment of this invention.

  Hereinafter, an exhaust gas purification facility and an operation control method thereof according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, with reference to FIG.1 and FIG.2, the exhaust gas purification installation by embodiment of this invention is demonstrated.
As shown in FIG. 1, the code | symbol 1 shows the exhaust gas purification equipment 1 by embodiment of this invention, and this exhaust gas purification equipment 1 is the continuous regeneration type concentration apparatus 2 which is an adsorption removal apparatus, and this continuous regeneration type concentration apparatus. And a combustion-type exhaust gas purification device 4 that combusts and removes flammable harmful components of the exhausted air discharged from 2.

  The continuous regeneration type concentrator 2 removes combustible harmful components from the adsorbent 6 by supplying an adsorbent 6 capable of adsorbing and desorbing flammable harmful components and supplying desorption air having a high temperature to the adsorbent 6. The detachable air supply device 8 is provided. Here, the combustible harmful component contained in the exhaust gas means a combustible malodor component such as toluene or ethyl acetate or a volatile organic compound.

In this embodiment, the combustion exhaust gas purification device 4 has a plurality of heat storage chambers and a combustion chamber provided with a burner connected to the plurality of heat storage chambers, as will be described later, and is continuously regenerated. A regenerative exhaust gas purification device that purifies combustible harmful components by burning the exhaust air from the gas concentration device 2 is used. A typical example of this heat storage type exhaust gas purification device is RTO (Regenerative Thermal Oxidizer).

  The continuous regeneration type concentrator 2 is connected to a blower 10 for sending exhaust gas into the interior, so that the exhaust gas is supplied to the adsorbent 6.

  On the other hand, the combustion type exhaust gas purification apparatus 4 includes a plurality of heat storage chambers, that is, two heat storage chambers of a heat storage chamber 1 tower 12 and a heat storage chamber 2 tower 14, and a combustion chamber provided and connected between these heat storage chambers. 16. The heat storage chamber 1 tower 12 includes a supply damper 18 a that supplies gas to the heat storage chamber 1 tower 12 and an exhaust damper 20 a that discharges gas from the heat storage chamber 1 tower 12. The second heat storage chamber 14 includes a supply damper 18 that supplies gas to the second heat storage chamber 14 and an exhaust damper 20 b that discharges gas from the second heat storage chamber 14.

  The adsorbent 6 of the continuous regeneration type concentrator 2 is formed in a rotatable cylindrical shape carrying an adsorbent such as activated carbon or zeolite. The adsorbent 6 has an adsorption zone 6a for adsorbing and removing combustible harmful components from the exhaust gas, a regeneration zone 6b for removing the combustible harmful components adsorbed from the adsorbent 6, and a cooling zone for cooling the adsorbent 6 in the rotation direction. 6c is provided so that the combustible and harmful components can be continuously adsorbed and desorbed by rotation.

  In the cooling zone 6 c of the adsorbent 6, the adsorbent 6 is cooled by a part of the exhaust gas sent to the continuous regeneration type concentrator 2 by the blower 10. The cooling zone 6 c is connected to the mixing chamber 24 of the above-described detachable air supply device 8 via the damper 21, the duct 23, and the damper 25.

The detachable air supply device 8 includes a mixing chamber 24, a blower 27, a T-shaped duct 29, a first damper 31, and a supply duct 26.
The mixing chamber 26 is connected to the combustion chamber 16 of the combustion exhaust gas purification device 4 via a hot bypass damper 28, and is connected to the regeneration zone 6 b of the adsorbent 6 via a supply duct 26.

  The air discharged from the cooling zone 6 c is mixed and heated with the high-temperature gas supplied from the combustion chamber 16 via the hot bypass damper 28 in the mixing chamber 24, and enters the regeneration zone 6 b of the adsorbent 6 via the supply duct 26. The flammable harmful components adsorbed on the adsorbent 6 are supplied as desorption air for desorbing the adsorbent 6 from the adsorbent 6.

  Here, the supply duct 26 is provided with a temperature sensor 30, and the control device 32 (see FIG. 2) adjusts the opening degree of the hot bypass damper 28 based on the temperature measured by the temperature sensor 30. In addition, the mixing ratio between the air discharged from the cooling zone 6 c and the high-temperature gas supplied from the combustion chamber 16 can be controlled.

  A discharge duct 34 for discharging exhaust air containing combustible harmful components removed in the regeneration zone 6b of the adsorbent 6 is connected downstream of the regeneration zone 6b.

  A second damper 35 is connected downstream of the discharge duct 34, and switching between passage and blocking of the discharged air discharged from the regeneration zone 6b of the adsorbent 6 is possible.

  The third damper 37 is disposed between the first damper 31 and the second damper 35 so as to connect between the T-shaped duct 29 and the T-shaped duct 39.

  The second damper 35 and the third damper 37 are bifurcated and connected to a T-shaped duct 39, an outside air intake damper (three-way opening damper) 38, a blower 40, the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14. The exhaust gas supply ports of the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14 of the combustion exhaust gas purification device 4 are connected to each other through the duct 42 and the two supply dampers 18a and 18b, respectively.

  The exhaust gas discharge ports of the first heat storage chamber 12 and the second heat storage chamber 14 are connected to the exhaust duct 46 via two discharge dampers 20 a and 20 b and a bifurcated duct 44.

  The upstream end of the bifurcated duct 44 is connected to the upstream side of the branch of the bifurcated duct 42 via a special damper 45.

  The exhaust duct 46 is connected to the combustion chamber 16 by a hot bypass damper 48 that can be opened and closed. Temperature sensors 50 and 52 are provided in the combustion exhaust gas purification device 4, for example, the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, respectively. Is exceeded, the control device 32 opens the hot bypass damper 48 so that excess heat can be released from the exhaust duct 46. Here, the temperature sensors 50 and 52 are respectively provided between the heat storage bodies of the first heat storage chamber 12 and the second heat storage chamber 14 and the combustion chamber 16.

  A concentration meter 54 for measuring the concentration of flammable harmful components is attached to the discharge duct 34. Further, in order to measure the gas temperature, the bifurcated duct 42 is provided with a temperature sensor 60, and the bifurcated duct 44 is provided with a temperature sensor 62. Further, the combustion chamber 16 is provided with a burner 56 and a temperature sensor 58 for measuring the temperature in the combustion chamber 16.

Here, as shown in FIG. 2, the measured values measured by the temperature sensor 30, the densitometer 54, the temperature sensors 50 and 52, the temperature sensor 58, and the temperature sensors 60 and 62 are input to the control device 32, Based on these measured values, as will be described later, the control device 32 controls the hot bypass damper 28, the cutoff damper 36, the hot bypass damper 48, the burner 56, and the supply dampers 18a and 18b and the discharge dampers 20a and 20b. It has come to be.
The control device 32 further performs control of the rotational speed of the adsorbent body 6 and the rotational speeds of the blower 27 and the blower 40, control of ignition and extinguishing of the burner 56, and various controls described later. It has become.

  Next, basic control in the operation control method in the exhaust gas purification equipment according to the present embodiment described above will be described.

  When exhaust gas containing flammable harmful components is sent to the continuous regeneration type concentration device 2 by the blower 10, the exhaust gas is discharged to the outside air after the flammable harmful components are adsorbed and removed in the adsorption zone 6a of the rotating adsorbent 6.

  The combustible harmful component adsorbed by the adsorbent 6 is sent to the regeneration zone 6b by rotation, and is desorbed from the adsorbent 6 by desorption air supplied from the supply duct 26 of the desorption air supply device 8 in the regeneration zone 6b. Removed. The combustible harmful component removed from the adsorbent 6 is contained in the desorption air, and is discharged to the discharge duct 34 as exhaust air containing the combustible harmful component. Here, the exhaust air contains flammable harmful components at a higher concentration than the exhaust gas supplied to the continuous regeneration type concentrator 2.

  The amount of air to be taken off is determined by the method of controlling the air volume by changing the number of revolutions of the air blower by inverter control in the air blower 27 and air blower 40, or by attaching an air flow adjusting valve before and after the air blower, and the air volume by the opening of the adjusting valve. It can be controlled by the adjusting method.

  The adsorbent 6 heated in the regeneration zone 6b is cooled by the exhaust gas in the cooling zone 6c and becomes in a state where it can efficiently adsorb combustible harmful components.

  The air discharged from the cooling zone 6c is mixed with the high-temperature gas supplied from the combustion chamber 16 in the mixing chamber 24 and heated, and then blown by the blower 27 and passes through the open first damper 15 to supply duct. 26 and supplied to the regeneration zone 6 b of the adsorbent 6. Here, the third damper 32 is in a closed state.

  Exhaust air containing flammable harmful components discharged to the discharge duct 34 passes through the second damper 35 in the open state, passes through the blower 40, the bifurcated duct 42, and the supply damper 18a in the open state in order, and is a combustion exhaust gas. The heat storage chamber 1 tower 12 of the purification device 4 is supplied.

  The exhaust air is heated in the heat storage chamber 1 tower 12 and then flows into the combustion chamber 16 where the combustible harmful components are removed by combustion and purified. Since the burner 56 is provided in the combustion chamber 16, the temperature of the combustion chamber 16 can be maintained at a temperature at which combustible harmful components can be sufficiently removed by combustion. The purified gas is stored in the two heat storage chambers 14, and then sequentially passes through the open exhaust damper 20 b and the bifurcated duct 44 and is discharged from the exhaust duct 46.

  Here, in the combustion exhaust gas purification device 4, in order to effectively use the exhaust heat stored in the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, the exhaust gas flow direction is switched after the exhaust gas is processed for a certain period of time. It is necessary to That is, the supply damper 18a so that the exhaust gas flowing in the order of the heat storage chamber 1 tower 12 → the combustion chamber 16 → the heat storage chamber 2 tower 14 flows in the order of the heat storage chamber 2 tower 14 → the combustion chamber 16 → the heat storage chamber 1 tower 12. , 18b and the discharge dampers 20a, 20b need to be switched.

  Switching between the supply dampers 18a and 18b and the discharge dampers 20a and 20b is performed according to the following procedure. First, the 1st damper 31 and the 2nd damper 35 are made into a closed state, and supply of the hot desorption air with respect to the adsorption body 6 is interrupted. Next, the third damper 37 is opened, and air containing almost no flammable harmful components discharged from the cooling zone 6 c is supplied to the bifurcated duct 42 and the bifurcated duct 44 through the T-shaped duct 39. Subsequently, the supply damper 18a and the discharge damper 20b are closed, and the supply damper 18b and the discharge damper 20a are opened to switch the gas flow direction.

  After the switching is completed, the third damper 37 is closed, the first damper 31 and the second damper 35 are opened, and the supply of desorption air to the adsorbent 6 is resumed. As a result, the exhausted air flows from the supply damper 18b in the open state into the combustion chamber 16 through the two heat storage chambers 14 and burns and removes the flammable harmful components. The exhaust gas passes through the chamber 1 tower 12, the open discharge damper 20 and the bifurcated duct 44 in order, and is discharged from the exhaust duct 46.

  The same applies when the supply damper 18a and the discharge damper 20b are closed, the supply damper 18b and the discharge damper 20a are opened, the supply damper 18a and the discharge damper 20b are opened, and the supply damper 18b and the discharge damper 20a are switched to the closed state. It becomes the procedure of.

  Thus, when the supply dampers 18a, 18b and the discharge dampers 20a, 20b are opened and closed in conjunction with each other and switched, the supply dampers 18a, 18b and the discharge dampers 20a, 20b are simultaneously opened. The supply of desorption air to the air is interrupted, and air containing almost no flammable harmful components discharged from the cooling zone 6c is allowed to pass through the open supply dampers 18a and 18b and the discharge dampers 20a and 20b, respectively. Therefore, it is possible to prevent the exhaust air containing the combustible harmful component from being discharged into the atmosphere without removing the combustible harmful component by combustion.

  Next, with reference to FIG. 3, the operation control method of the exhaust gas purification equipment will be described in detail. Note that S in FIG. 3 indicates each step.

  In the operation control method of the exhaust gas purification facility 1 according to the present embodiment, the temperature in the combustion exhaust gas purification device 4 that changes corresponding to the combustible harmful component concentration is measured, and operation control based on the measured temperature is performed. Thereby, in the combustion type exhaust gas purification apparatus 4, it controls so that a combustible harmful | toxic component density | concentration becomes more than a self-combustion density | concentration.

  In the present embodiment, as the measured temperature T1, the average of the temperature t1 measured by the temperature sensor 50 provided in the heat storage chamber 1 tower 12 and the temperature measured by the temperature sensor 52 provided in the heat storage chamber 2 tower 14 is used. The temperature (t1 + t2) / 2 is adopted. If the average temperature of the heat storage chamber is used, the combustion state of the flammable harmful component can be accurately grasped. Moreover, the temperature of the combustion chamber 16 can also be used as the measurement temperature T1. According to this, the temperature change accompanying ignition / extinguishing of the burner 56 can be accurately detected.

  Corresponding to a plurality of concentration ratios defined by the ratio of the rated blast volume of exhaust gas supplied to the adsorption removal device 2 and the blast volume blown by the blowers 27, 40, the rotational speed of the adsorbent 6 and the blower 27, A plurality of operation condition patterns combining 21 rotation speeds are set in advance. By controlling the rotational speeds of the blowers 27 and 21, the amount of air sent to the regeneration zone 1b can be controlled and the concentration factor can be changed. Controlling the amount of air blown by the blowers 27 and 21 by the rotational speed of the blower is preferable because high-precision control is possible with a simple method. The rotational speed of the adsorbent 6 is set to an appropriate rotational speed that can efficiently adsorb and remove combustible harmful components corresponding to the amount of air blown.

  As control temperatures for performing operation control in comparison with the measured temperature T1, the reignition temperature, the concentration rate increasing temperature, the precut temperature, the high cut temperature, the proportional control start temperature (proportional control start SP), and hot bypass The control temperature (proportional control allowable deviation SP) and the concentration reduction temperature are preset.

  The operating condition pattern is controlled by a concentration rate increasing temperature for increasing the corresponding concentration rate and a concentration rate decreasing temperature for decreasing the corresponding concentration rate.

  The ignition / extinguishing of the burner 56 is controlled by a re-ignition temperature for re-igniting the burner 56, a pre-cut temperature and a high-cut temperature for extinguishing the burner 56. Here, the target temperature T2 in the combustion exhaust gas purification device 4 satisfies the relationship of precut temperature ≦ target temperature T2 <high cut temperature, and when the burner 56 is ignited, the measured temperature T1 becomes the target temperature T2. Output control of the burner 56 is performed.

Here, the high cut temperature is a control temperature for extinguishing the burner 56 in the operation condition pattern when the concentration ratio is maximum, and the precut temperature is for extinguishing the burner 56 in the operation condition pattern at other concentration ratios. Is the control temperature.
When the burner 56 is ignited in the operating condition pattern when the concentration ratio is maximum, the concentration of combustible harmful components is low. Therefore, if the high cut temperature ≦ the target temperature, the high cut temperature is reached immediately and the burner 56 After the fire is extinguished, the measured temperature T1 is lowered and the re-ignition temperature is reached and the ignition is repeated. Therefore, the high cut temperature needs to be higher than the target temperature.

  Opening and closing of the hot bypass damper 27 for controlling the temperature in the combustion chamber 16 is controlled by a proportional control start temperature (proportional control start SP) and a hot bypass control temperature (proportional control allowable deviation SP). Here, the hot bypass control temperature has a deviation, for example, ± 50 ° C., and the opening degree of the hot bypass damper 27 can be adjusted by PID control. Here, the hot bypass control temperature is such that the minus side deviation SP matches the proportional control start temperature (proportional control start SP).

  First, in S <b> 1, an exhaust gas cutoff damper (not shown) provided upstream of the blower 10 is opened, and the exhaust gas is sent to the continuous regenerative concentrator 2 by the blower 10.

  Next, in S2, the outside air intake damper (three-way opening damper) 38 is closed to stop taking in outside air.

  Next, it progresses to S3 and the following control methods are selected according to concentration magnification. If the operation condition pattern with the minimum concentration ratio is selected, the process proceeds to S101. If the operation condition pattern with the maximum concentration ratio is selected, the process proceeds to S301. If the operation condition pattern with any other concentration ratio is selected, the process proceeds to S201. Proceed to each.

  When the operation condition pattern with the minimum concentration ratio is selected, it is determined in S101 whether or not the burner 56 is igniting. If the burner 56 is ignited, the process proceeds to S102. If the burner 56 is not ignited, the process returns to step S102. In S102, the burner 56 is controlled so that the measured temperature T1 becomes the target temperature.

  Next, it progresses to S103 and it is judged whether measured temperature T1 is more than precut temperature. When measured temperature T1 is more than precut temperature, it progresses to Step S104 and burner 56 is extinguished. On the other hand, when the measured temperature T1 is lower than the precut temperature, the process returns to S102.

  Next, it progresses to S105 and it is judged whether measured temperature T1 is more than proportional start control SP (proportional start control temperature). When the measured temperature T1 is equal to or higher than the proportional start control SP, the process proceeds to S106, and proportional control is performed by changing the opening of the heat exhaust damper (hot bypass damper 27) based on the measured temperature T1. On the other hand, when measured temperature T1 is less than proportional start control SP, it progresses to S121.

  Next, the process proceeds to S107, and the measured temperature T1 is compared with the proportional control allowable deviation SP. If the measured temperature T1 is less than the minus side deviation SP, the process proceeds to S121. If the measured temperature T1 exceeds the plus side deviation SP, the process proceeds to S108, and whether the measured temperature T1 is equal to or greater than the outside air intake start SP. to decide. If the measured temperature T1 is within the proportional control allowable deviation SP, the process returns to 106.

  Next, when the measured temperature T1 is equal to or higher than the outside air intake start SP, the process proceeds to S109, and the outside air intake damper is opened. On the other hand, if the measured temperature T1 is less than the outside air intake start SP, the process returns to step S105.

  Next, in S110, it is determined whether or not the measured temperature T1 is equal to or less than the outside air intake start SP. If the measured temperature T1 is equal to or lower than the outside air intake start SP, the process proceeds to S111, the outside air intake damper is closed, and the process returns to step S105. On the other hand, if the measured temperature T1 exceeds the outside air intake start SP, S110 is repeated.

  Next, in S121, it is determined whether the measured temperature T1 is equal to or lower than the concentration factor increasing temperature. If the measured temperature T1 is equal to or lower than the concentration magnification increasing temperature, the process proceeds to S122, and the operation condition pattern corresponding to the minimum magnification is changed to the operation condition pattern corresponding to the concentration magnification with a high one-step concentration. On the other hand, if the measured temperature T1 exceeds the concentration factor increasing temperature, the process returns to S105.

  Next, it progresses to S123 and it is judged whether measured temperature T1 is below burner re-ignition SP (re-ignition temperature). If the measured temperature T1 is equal to or lower than the burner reignition SP, the process proceeds to S124, where the burner 56 is ignited or reignited, and the process returns to step S3. If the measured temperature T1 exceeds the burner re-ignition SP, the process returns to S3.

  Next, in an operation condition pattern where the concentration ratio is not minimum or maximum, the process proceeds to S201. Here, since S201-S206 and S221-S224 are the same control as S101-S106 and S121-S124 mentioned above, description is abbreviate | omitted.

  In S208 following S207, it is determined whether or not the measured temperature T1 is equal to or higher than the concentration rate reduction temperature. If the measured temperature T1 is equal to or higher than the concentration rate decreasing temperature, the process proceeds to step S209, and the current operation condition pattern is changed to an operation condition pattern corresponding to the concentration rate having a low one-step concentration. On the other hand, if the measured temperature T1 is less than the concentration factor increasing temperature, the process returns to S205.

  Next, proceeding to S210, it is determined whether or not the measured temperature T1 is equal to or higher than the outside air intake start SP. When the measured temperature T1 is equal to or higher than the outside air intake start SP, the process proceeds to S211 and the outside air intake damper is opened. On the other hand, if the measured temperature T1 is less than the outside air intake start SP, the process returns to S3.

  Next, the process proceeds to S212, and it is determined whether or not the measured temperature T1 is equal to or less than the outside air intake start SP. If the measured temperature T1 is equal to or lower than the outside air intake start SP, the process proceeds to S213, the outside air intake damper is closed, and then the process returns to S3. On the other hand, if the measured temperature T1 exceeds the outside air intake start SP, S212 is repeated.

  Next, in the operating condition pattern in which the concentration ratio is the maximum, the process proceeds to S301. Here, S301, S302, and S304 to S313 are the same controls as S201, S202, and S204 to S213, and thus description thereof is omitted.

  In S303 following S302, it is determined whether or not the measured temperature T1 is equal to or higher than the high cut temperature. If the measured temperature T1 is equal to or higher than the high cut temperature, the process proceeds to S304, and the burner 56 is extinguished. On the other hand, when measured temperature T1 is less than high cut temperature, it returns to S302.

  Next, if it is determined in S305 that the measured temperature T1 is less than the proportional start control SP or that the measured temperature T1 is less than the minus side deviation SP in S307, the process proceeds to S321. In S321, it is determined whether or not the measured temperature T1 is equal to or lower than the burner re-ignition SP (re-ignition temperature). When measured temperature T1 is below burner reignition SP, it progresses to S322, burner 56 is reignited, and it returns to S302 after that. On the other hand, when the measured temperature T1 exceeds the burner re-ignition SP, the process returns to S305.

  As described above, in the exhaust gas treatment facility and the operation control method according to the present embodiment, the temperature in the combustion exhaust gas purification device 4 corresponding to the combustible harmful component concentration is measured, and the measured temperature T1, the concentration factor increasing temperature, It is possible to control the ignition / extinguishing of the burner 56 by comparing the measured temperature T1 with the reignition temperature, the pre-cut temperature, and the high-cut temperature by selecting the operation condition pattern by comparing the concentration rate reduction temperature. As a result, by changing the concentration factor so as to approach the target temperature and controlling the ignition of the burner 56, it is possible to control the optimal combustion conditions so as to be in a self-combustion state. It is possible to reduce the fuel cost of the burner 56 by increasing the operation time at which the concentration becomes high. Further, the temperature in the combustion exhaust gas purification device 4 can be adjusted by opening and closing the hot bypass damper 48.

  Here, the above-described operation control method may be a method of controlling the concentration of the combustible harmful component measured by the densitometer 54 in combination with the control temperature as a control factor.

  Next, an example of operation control by the operation control method of the exhaust gas purifying apparatus of the present embodiment will be described with reference to FIG. In this control example, the control temperature, concentration ratio, and operation condition pattern were set as follows. In the figure, burner ON indicates that the burner 56 is ignited, burner OFF indicates that the burner 56 is extinguished, hot bypass damper ON indicates that the hot bypass 48 is open, and hot bypass damper OFF indicates that the hot bypass damper 48 is closed.

Here, the target temperature was 815 ° C., and the control temperature was set as follows.
-Re-ignition temperature: 800 ° C
・ Concentration increase temperature: 810 ℃
-Pre-cut temperature: 810 ° C
・ High cut temperature: 830 ℃
-Proportional control start temperature SP: 830 ° C
Proportional control allowable deviation SP: 830 ° C. (−side deviation: 0 ° C., + side deviation: 100 ° C.)
・ Concentration reduction temperature: 880 ℃
・ Cold air intake start temperature: 900 ℃
Here, the cold air intake start temperature is a temperature set to introduce outside air when the temperature of the combustion chamber 16 rises too much.

Moreover, the concentration magnification and the operating condition pattern were set as follows.
Concentration magnification: 7 times: rotation speed of fan 27 and blower 40 (55 Hz), rotation speed of adsorbent 6 7.2 times per hour (rph)
Concentration magnification 8 times: rotation speed of fan 27 and blower 40 (52 Hz), rotation speed of adsorbent 6 6.5 times per hour (rph)
Concentration magnification 9 times: The rotational speed of the blower 27 and the blower 40 (42 Hz), the rotational speed of the adsorbent 6 5.9 times per hour (rph)
Concentration magnification 10 times: rotation speed of fan 27 and blower 40 (32 Hz), rotation speed of adsorbent 6 5.3 times per hour (rph)

The rotation speed 55Hz fourth set air volume of the blower 27, the third set airflow rpm 52Hz blower 27 is the air volume is less than the fourth set air volume, rotation speed 42Hz blower 27 is the air volume is less than the third set air volume The second set air volume and the rotational speed 32 Hz of the blower 27 respectively correspond to the first set air volume whose air volume is smaller than the second set air volume.

  First, after the burner 56 is ignited and a warm-up operation is performed at a rotational speed of 17 Hz of the blower 40, the operation is started with an operation condition pattern (fourth set air volume) with a concentration factor of 7 times.

  When exhaust gas is introduced, the measured temperature T1 rises due to combustion. When the measured temperature T1 reaches the pre-cut temperature 810 ° C., the burner 56 is extinguished after counting by a timer for a predetermined time. Here, the measured temperature T1 decreases with the burner 56, and the exhaust gas is not combusted. When the concentration rate increase temperature falls below 810 ° C., the operation condition pattern (third set air volume) with a high concentration rate of 8 times is switched to the one-step concentration rate. Further, when the measured temperature T1 falls below the re-ignition temperature of 800 ° C., the burner 56 is ignited.

  Since the concentration ratio has increased, exhaust gas with a high concentration of flammable harmful components is sent, and the temperature once rises to 810 ° C. or higher, but then drops to less than 810 ° C. As a result, the operation condition pattern (second set air volume) with a higher concentration ratio of 9 times is switched. When the measured temperature T1 reaches the pre-cut temperature 810 ° C., the burner 56 is extinguished, and when the re-ignition temperature falls below 800 ° C., the burner 56 is ignited.

  The operation condition pattern with a concentration factor of 9 times shows the same behavior as the operation condition pattern with a concentration factor of 8 times, and the operation condition pattern (first set air volume) with a higher concentration factor is 10 times.

  When switching to an operating condition pattern with a concentration factor of 10 times, a self-combustion state occurs and the temperature begins to rise. When the measured temperature T1 reaches 830 ° C. or higher, the hot bypass damper 48 is opened to discharge excess heat to the outside of the system, so that the temperature once stabilizes in the vicinity of 830 ° C., but then starts to rise. This is because the concentration of the flammable harmful component is too high, and when the concentration rate reduction temperature reaches 880 ° C., the operation condition pattern (second set air volume) of the concentration rate of 9 times is reduced. In this state, the burner 56 is in a fire extinguishing state.

  When switching to an operating condition pattern with a concentration factor of 9 times, the temperature begins to drop. When the proportional control allowable deviation minus the side deviation SP830 ° C. is exceeded, the hot bypass damper 48 is closed in order to stop the exhaust heat. Then, when the temperature further decreases and the concentration rate increases below 810 ° C., the operation condition pattern (first set air volume) with a high concentration factor of 10 is switched to the one-stage concentration rate. When the measured temperature T1 reaches the pre-cut temperature 810 ° C., the burner 56 is extinguished, and when the re-ignition temperature falls below 800 ° C., the burner 56 is ignited.

  When switching to an operating condition pattern with a concentration factor of 10 times, the temperature once rises, but then the temperature begins to fall. When the reignition temperature falls below 800 ° C., the burner 56 is reignited and controlled so as to approach the target temperature T2. When the measured temperature T1 reaches the pre-cut temperature 810 ° C., the burner 56 is extinguished, and when the re-ignition temperature falls below 800 ° C., the burner 56 is ignited.

  In this embodiment, four patterns are set so that accurate operation control can be easily performed. However, the concentration factor and the number of patterns can be set as appropriate. For example, four patterns of concentration magnifications 9, 10, 11, and 12 times may be set, three patterns of concentration magnifications 9, 10, and 11, five patterns of concentration magnifications 9, 10, 11, 12, and 13 times, etc. May be set.

  In the present embodiment, the operation control is started from the operation condition pattern having the minimum enrichment factor. However, the operation condition pattern corresponding to the multiple enrichment factor is appropriately determined depending on the assumed combustion state. You may make it select.

  The operation control method of the exhaust gas purification equipment of the present invention is not limited to using a heat storage type exhaust gas purification device as the combustion type exhaust gas purification device, and may be applied to other types of combustion type exhaust gas purification devices. Moreover, as a heat storage type exhaust gas purification device, for example, an exhaust gas purification facility 70 described later may be applied. About the exhaust gas purification equipment 70, the same code | symbol is attached | subjected to the same structure as the exhaust gas purification equipment 1, and a difference is mainly demonstrated below.

  The exhaust gas purification equipment 70 has a simple structure in which the dampers 21 and 25, the blower 27, the first damper 31, the second damper 35, the third damper 37, and the special damper 45 in the exhaust gas purification equipment 1 are omitted.

  The detachable air supply device 3 includes a mixing chamber 24 and a supply duct 26. The mixing chamber 24 is connected to the combustion chamber 16 of the combustion exhaust gas purification device 4 via a hot bypass damper 28, and is connected to the regeneration zone 6 b of the adsorbent 6 via a supply duct 26.

  The air discharged from the cooling zone 6 c is mixed and heated with the high-temperature gas supplied from the combustion chamber 16 through the hot bypass damper 28 in the mixing chamber 24, and is supplied to the regeneration zone 6 b of the adsorbent 6 through the supply duct 26. The flammable harmful components adsorbed from the adsorbent 6 are supplied as desorption air for desorbing from the adsorbent 6.

  A shut-off damper 36 is connected downstream of the discharge duct 34, and switching between passage and shut-off of the exhaust air discharged from the regeneration zone 6b of the adsorbent 6 is possible.

  An outdoor air intake damper 38 capable of taking outside air into the discharge duct 34 is provided downstream of the shut-off damper 36, and a blower 40 is provided downstream of the external air intake damper 48. The discharged air is blown by the suction force of the blower 40.

  As described above, the discharge duct 34 is provided with the shut-off damper 36, the outside air intake damper 48, and the blower 40 from the upstream, and is branched and connected to the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14. Are connected to the exhaust gas supply ports of the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14 of the combustion-type exhaust gas purification device 4 through a bifurcated duct 42 and two supply dampers 18a and 18b, respectively.

  The combustible harmful component adsorbed by the adsorbent 6 is sent to the regeneration zone 6b by rotation, and is desorbed from the adsorbent 6 by desorption air supplied from the supply duct 26 of the desorption air supply device 8 in the regeneration zone 6b. Removed.

  Exhaust air containing flammable harmful components discharged to the discharge duct 34 passes through the open cutoff damper 36, and sequentially passes through the outside air intake damper 38, the blower 40, the bifurcated duct 42, and the open supply damper 18a. And supplied to the heat storage chamber 1 tower 12a of the combustion exhaust gas purification device 4.

  The supply dampers 18a and 18b and the discharge dampers 20a and 20b are switched in the following procedure. First, the outside air intake damper 38 is opened to take in outside air.

  Next, the hot bypass damper 28 and the cutoff damper 36 are closed, and the supply of high-temperature air to the adsorbent 6 is interrupted.

  Subsequently, the supply damper 18a and the discharge damper 20b are closed, and the supply damper 18b and the discharge damper 20a are opened to switch the gas flow direction.

  After the switching is completed, the hot bypass damper 28 and the shut-off damper 36 are opened, the supply of the desorption air to the adsorbent 6 is resumed, and the outside air intake damper 38 is closed to stop taking in outside air.

Thus, when the supply dampers 18a and 18b and the discharge dampers 20a and 20b are opened and closed in conjunction with each other and switched, the supply dampers 18a and 18b and the discharge dampers 20a and 20b are simultaneously opened. In the closed state, the supply of the desorption air to the adsorbent 6 is interrupted, the outside air intake damper 38 is opened, the outside air containing no flammable harmful components is taken in, and the introduced outside air is supplied to the supply dampers 18a and 18b. And the exhaust dampers 20a and 20b can be prevented from being discharged into the atmosphere without the combustible harmful components being removed by combustion. it can.
Further, the supply dampers 18a and 18b and the discharge dampers 20a and 20b can be quickly switched with a simple structure and a small number of operations.

  The combustion exhaust gas purification device 4 may be a heat storage exhaust gas purification device having a plurality of heat storage chambers.

  According to the exhaust gas purification equipment and the operation control method of the present invention described above, the temperature in the combustion exhaust gas purification device 4 corresponding to the combustible harmful component concentration is measured, and the measured temperature T1, the concentration factor increase temperature, and the concentration factor decrease. The operating condition pattern is selected by comparing the temperatures, and the amount of air blown by the blowers 27 and 40 and the rotational speed of the adsorbent 6 are controlled, so that the gas in the gas sent to the combustion exhaust gas purification device 4 is controlled. The concentration of flammable harmful components can be controlled. The ignition / extinguishing of the burner 56 can be controlled by comparing the measured temperature T1, the re-ignition temperature, the pre-cut temperature, and the high-cut temperature. As a result, it is possible to increase the operation time at which the combustible harmful component has a concentration capable of self-combustion, so that the fuel cost of the burner 56 can be reduced.

1,70 Exhaust gas purification equipment 2 Continuous regeneration type concentrator (adsorption removal device)
4 Heat storage type exhaust gas purifying device 5, 27, 40 Blower 6 Adsorber 12 Heat storage chamber 1 tower 14 Heat storage chamber 2 tower 16 Combustion chambers 28a, 28b, 28c, 28d Supply dampers 30a, 30b, 30c, 30d Discharge damper 32 Control device 34 Exhaust duct 36 Shut-off damper 38 Outside air intake dampers 42, 44 Bifurcated duct 46 Exhaust duct 48 Hot bypass dampers 50, 52, 58 Temperature sensor 54 Concentration meter 56 Burner

Claims (12)

An adsorption / removal device equipped with a rotary adsorbent capable of adsorbing and desorbing flammable harmful components contained in exhaust gas, and supplying the exhaust gas containing flammable harmful components to the adsorbent, and using this adsorbent, combustible harmful components Removing the flammable harmful components adsorbed on the adsorbent by supplying high-temperature desorption air to the adsorbent,
A combustion-type exhaust gas purification device for purifying the flammable harmful components by burning exhaust air containing flammable harmful components discharged from the adsorption removal device in a combustion chamber equipped with a burner;
A blower provided on the upstream side of the combustion-type exhaust gas purification device, and having a variable amount of air sent to the combustion-type exhaust gas purification device for discharging exhaust air discharged from the adsorption removal device;
Temperature measuring means for measuring the temperature in the combustion exhaust gas purification device corresponding to the concentration of flammable harmful components in the exhaust air;
Combustibility in exhaust air sent from the adsorption removal device to the combustion exhaust gas purification device by controlling the amount of air blown by the blower and the rotational speed of the adsorbent based on the measurement value of the temperature measuring means A control device for controlling the concentration of harmful components,
The combustion exhaust gas purification apparatus includes a plurality of heat storage chambers and combustion chambers connected to the plurality of heat storage chambers, and a plurality of sets of dampers provided in pairs in each of the plurality of heat storage chambers. Is a regenerative exhaust gas purification device that purifies flammable harmful components contained in the exhaust air by combusting the exhaust air supplied from one of a plurality of heat storage chambers in the combustion chamber. ,
Furthermore, the exhaust air discharged from the adsorption removal device is supplied to the combustion exhaust gas purification device, and is connected to each heat storage chamber of the heat storage exhaust gas purification device, and the exhaust is sequentially discharged from the upstream of the piping. A shut-off damper that shuts off the supply of air, an outside air intake damper that takes in outside air into the pipe, and the blower having the pipe disposed;
When the plurality of sets of dampers are simultaneously opened, the control device opens the outside air intake damper to take in outside air into the pipe, and closes the shut-off damper to the adsorption body of the adsorption removal device. to interrupt the supply of desorption air, the outside air intake Danba and by operating the shutoff damper, exhaust gas purifying equipment for controlling the captured ambient air as Ru passed to each of said open state damper .   The exhaust gas purification equipment according to claim 1, wherein the temperature measuring means measures each temperature of the plurality of heat storage chambers, and uses the average value as a temperature in the combustion exhaust gas purification apparatus.   The exhaust gas purification equipment according to claim 1, wherein the temperature measurement means measures the temperature of the combustion chamber and uses the measured value as the temperature in the combustion exhaust gas purification apparatus.   The exhaust gas purification equipment according to claim 1, wherein the blower is configured to change the number of rotations so that the amount of blown air is variable.   The exhaust gas purification equipment according to claim 1, wherein the control device ignites and extinguishes the burner based on a temperature in the combustion exhaust gas purification device. The control device sets a plurality of concentration ratios defined by a ratio of a rated blast amount of exhaust gas supplied to the adsorption removal device and a blast amount blown by the blower, and the set plurality of concentration magnifications In response to the above, a plurality of operation condition patterns that combine the rotational speed of the adsorbent and the rotational speed of the blower are set,
The plurality of operation condition patterns are set so that the operation condition pattern corresponding to a higher concentration factor, the rotation speed of the adsorbent and the rotation speed of the blower are lower,
As a control temperature for switching between the operation condition pattern and the ignition / extinguishing of the burner based on the temperature of the combustion exhaust gas purification device measured by the temperature measuring means, from the low temperature side, the re-ignition temperature, the concentration rate increasing temperature Pre-cut temperature, high-cut temperature and concentration reduction temperature are preset,
Start driving based on a driving condition pattern selected in advance from a plurality of driving condition patterns,
If the temperature of the combustion exhaust gas purification device is equal to or less than the concentration rate increase temperature, change to an operation condition pattern corresponding to a higher concentration rate,
When the temperature of the combustion exhaust gas purification device exceeds the concentration rate reduction temperature, change to an operation condition pattern corresponding to a lower concentration rate,
The burner is ignited at the start of operation, extinguished when the temperature of the combustion exhaust gas purification device becomes equal to or higher than the pre-cut temperature or the high cut temperature, and the temperature of the combustion exhaust gas purification device is equal to or lower than the re-ignition temperature. The exhaust gas purification equipment according to any one of claims 1 to 5, wherein an operation of reignition is repeated when it becomes. The control device ignites the burner of the combustion type exhaust gas purification device at the start of operation and extinguishes fire when the temperature of the combustion type exhaust gas purification device rises to the precut temperature, and the temperature decreases to the reignition temperature. Repeat the action of reignition when
The control device further includes:
When the supply amount of the exhaust gas supplied to the adsorption / removal device is the rated air flow rate, the air flow rate of the blower that achieves a predetermined concentration rate is set as the first set air flow rate, and the air flow rate that is larger than the first set air flow rate is set. 2 setting air volume, 3rd setting air volume larger than this 2nd setting air volume, and 4th setting air volume larger than this 3rd setting air volume are set,
At the start of operation, when the burner is ignited and the temperature rises to the temperature rise completion temperature, the rotational speed of the blower is controlled so that the blower has the fourth set air volume,
When the burner is extinguished in the state of the fourth set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the third set air volume. ,
When the burner is extinguished in the state of the third set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the second set air volume. ,
When the burner is extinguished in the state of the second set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the first set air volume. The exhaust gas purification equipment according to claim 6.   The said control apparatus controls the rotation speed of the said air blower so that the said air blower may become the said 2nd setting air flow, when temperature rises to the said concentration magnification reduction temperature in the state of the said 1st air flow setting. Exhaust gas purification equipment described in 1.   In the control device, the temperature of the combustion exhaust gas purification device is higher than the proportional control start temperature set higher than the pre-cut temperature of the hot bypass damper provided to communicate the combustion chamber and the outside air. The exhaust gas purification equipment according to claim 8, which is sometimes opened. An adsorption / removal device equipped with a rotary adsorbent capable of adsorbing and desorbing flammable harmful components contained in exhaust gas, and supplying the exhaust gas containing flammable harmful components to the adsorbent, and using this adsorbent, combustible harmful components Removing the flammable harmful components adsorbed on the adsorbent by supplying high-temperature desorption air to the adsorbent,
A combustion-type exhaust gas purification device for purifying the flammable harmful components by burning exhaust air containing flammable harmful components discharged from the adsorption removal device in a combustion chamber equipped with a burner;
A blower provided on the upstream side of the combustion-type exhaust gas purification device, and having a variable amount of air sent to the combustion-type exhaust gas purification device for discharging exhaust air discharged from the adsorption removal device;
Temperature measuring means for measuring the temperature in the combustion exhaust gas purification device corresponding to the concentration of flammable harmful components in the exhaust air,
The combustion exhaust gas purification apparatus includes a plurality of heat storage chambers and combustion chambers connected to the plurality of heat storage chambers, and a plurality of sets of dampers provided in pairs in each of the plurality of heat storage chambers. Is a regenerative exhaust gas purification device that purifies flammable harmful components contained in the exhaust air by combusting the exhaust air supplied from one of a plurality of heat storage chambers in the combustion chamber. ,
Furthermore, the exhaust air discharged from the adsorption removal device is supplied to the combustion exhaust gas purification device, and is connected to each heat storage chamber of the heat storage exhaust gas purification device, and the exhaust is sequentially discharged from the upstream of the piping. A shut-off damper that shuts off the supply of air, an outside air intake damper that takes outside air into the pipe, and the pipe where the blower is disposed, and an operation control method for the exhaust gas purification equipment,
Combustibility in exhaust air sent from the adsorption removal device to the combustion exhaust gas purification device by controlling the amount of air blown by the blower and the rotational speed of the adsorbent based on the measured value of the temperature measuring means Control the concentration of harmful ingredients,
Further, when the plurality of sets of dampers are simultaneously opened, the outside air intake damper is opened and the outside air is taken into the pipe, and the shutoff damper is closed and the desorption air to the adsorption body of the adsorption removal device. Operation control method of exhaust gas purification equipment for operating the outside air intake damper and the shut-off damper so as to interrupt the supply of air and controlling the taken outside air to pass through each of the open dampers . Corresponding to a plurality of concentration ratios defined by the ratio of the rated air flow rate of exhaust gas supplied to the adsorption removal device and the air flow rate blown by the blower, the rotation speed of the adsorbent and the rotation speed of the blower A plurality of operating condition patterns that are combined with
The plurality of operation condition patterns are set so that the operation condition pattern corresponding to a higher concentration factor, the rotation speed of the adsorbent and the rotation speed of the blower are lower,
As a control temperature for switching between the operation condition pattern and ignition / extinguishing of the burner based on the measured temperature, the re-ignition temperature, the concentration rate increasing temperature, the precut temperature, the high cut temperature, and the concentration rate decreasing temperature are preliminarily set from the low temperature side. Set,
Start driving based on the driving condition pattern pre-selected from the multiple driving condition patterns,
When the measured temperature is equal to or lower than the concentration rate increase temperature, the operation condition pattern corresponding to a higher concentration rate is changed and controlled,
If the measured temperature exceeds the concentration reduction rate, change to the operating condition pattern corresponding to the lower concentration rate, and control,
The burner is ignited at the start of operation, extinguished when the measured temperature becomes equal to or higher than the pre-cut temperature or the high-cut temperature, and re-ignited when the measured temperature becomes lower than the re-ignition temperature. The operation control method of the exhaust gas purification equipment according to claim 10, which is repeated. The burner of the combustion type exhaust gas purifying apparatus is ignited at the start of operation, extinguished when the temperature rises to a predetermined precut temperature, and reignited when the temperature drops to a predetermined reignition temperature. Repeat the action,
A first setting is made for the air volume of the blower so that the concentration rate planned during normal operation is the same as when the supply amount of the exhaust gas supplied to the adsorption removal device is the same as the expected amount. When the second set air volume larger than the first set air volume, the third set air volume larger than the second set air volume, and the fourth set air volume larger than the third set air volume are set,
At the start of operation, when the burner is ignited and the temperature rises to the temperature rise completion temperature, the rotational speed of the blower is controlled so that the blower has the fourth set air volume,
When the burner is extinguished in the state of the fourth set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the third set air volume. ,
When the burner is extinguished in the state of the third set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the second set air volume. ,
When the burner is extinguished in the state of the second set air volume, and then the temperature is reduced to the concentration rate increasing temperature, the rotation speed of the blower is controlled so that the blower becomes the first set air volume. The operation control method of the exhaust gas purification equipment according to claim 10 or 11 .

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