JP6191832B2 - 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 supplied to an exhaust gas purification facility and made harmless from the viewpoint of pollution prevention. Later it was released into the atmosphere.

  An example of this exhaust gas purification equipment is described in Patent Document 1. In the exhaust gas purification facility of this Patent Document 1, a plurality of pairs of dampers provided respectively in the plurality of heat storage chambers of a heat storage type exhaust gas purification apparatus having a plurality of heat storage chambers for exhaust gases containing flammable harmful components, respectively. It opens and closes in conjunction, and high temperature air containing flammable harmful components discharged from the adsorption removal device is supplied to and discharged from multiple heat storage chambers to burn and remove the flammable harmful components. It has become.

JP 2009-18303 A

  However, in the above-described conventional exhaust gas purification equipment, when a plurality of pairs of dampers of the regenerative exhaust gas purification device are opened and closed in conjunction with each other, it is necessary to open these dampers at the same time. There was a risk that the high-temperature desorption air containing the combustible harmful components discharged would pass through the regenerative exhaust gas purification device and be discharged into the atmosphere without being burned and removed.

  Therefore, the present invention has been made to solve the above-described problems of the prior art, and when a plurality of sets of dampers of a heat storage type exhaust gas purification device of an exhaust gas purification facility are opened and closed in conjunction with each other, these dampers are provided. To provide an exhaust gas purification equipment and an operation control method thereof in which exhaust gas containing a combustible harmful component is not discharged into the atmosphere without being burned and removed when the gas is simultaneously opened. With the goal.

In order to achieve the above object, a first invention of the present invention is an adsorption / removal device comprising an adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas, wherein the exhaust gas contains combustible harmful components. The adsorbent adsorbs and removes flammable harmful components from the exhaust gas, and supplies the adsorbent with high-temperature desorption air to desorb the flammable harmful components adsorbed on the adsorbent. An adsorption / removal device and a regenerative exhaust gas purification device that purifies combustible harmful components by burning exhaust air containing combustible harmful components discharged from the adsorption / removal device. Each of the heat storage chambers and the combustion chambers connected to the even number of heat storage chambers, and the even number of heat storage chambers are opened / closed by interlocking a plurality of pairs of dampers provided in pairs. Wastewater supplied from one of the Regenerative exhaust gas purification device that purifies flammable harmful components contained in the exhaust air by burning air in the combustion chamber, and exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and the regenerative exhaust gas Piping connected to each heat storage chamber of the purification device, and in order from the upstream of the piping, a shut-off damper that shuts off the supply of exhaust air, an outside air intake damper that takes outside air into the pipe, and exhaust air are supplied When a plurality of sets of dampers are opened simultaneously, the outside air intake damper is opened and the outside air is taken into the pipe, and the shut-off damper is closed and the suction removal device is closed. to interrupt the supply of desorption air to the adsorption member, by operating the outdoor air intake damper and shut-off damper, so as to pass through the respective the captured ambient air in an open state of the damper Having a control device.
According to the present invention configured as described above, when the dampers are simultaneously opened when switching between opening and closing of the plurality of sets of dampers, the outside air intake damper is opened and does not contain any flammable harmful components. Intakes outside air, shuts off the damper and closes the supply of hot desorption air to the adsorbent, and passes the introduced outside air to each of the open dampers. It is possible to prevent air from being discharged into the atmosphere without burning and removing the combustible harmful components.

In the first invention of the present invention, preferably, the concentration of the flammable harmful component contained in the exhaust air discharged from the adsorption removal device is the concentration of the flammable harmful component contained in the exhaust gas supplied to the adsorption removal device. Higher concentration.
According to the present invention configured as described above, the concentration of the combustible harmful component contained in the exhaust air discharged from the adsorption removal device is the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. Therefore, combustible harmful components can be efficiently burned and removed by the regenerative exhaust gas purification device.

The first invention of the present invention preferably further includes a densitometer for measuring the concentration of flammable harmful components in the exhaust air, and the control device is configured to measure the combustibility in the exhaust air measured by the densitometer. When the concentration of harmful components is equal to or higher than a preset concentration, the outside air intake damper is operated to take in outside air from the outside air intake damper and dilute the combustible harmful components.
According to the present invention configured as described above, when the concentration of the flammable harmful component in the exhaust air is equal to or higher than the preset concentration, the outside air is taken in and diluted from the outside air intake damper. It is possible to prevent an explosion or the like from occurring due to the concentration of the flammable harmful component being too high.

  A second aspect of the present invention is an adsorption / removal device having an adsorbent capable of adsorbing / desorbing combustible harmful components contained in exhaust gas, and combusting exhaust air containing combustible harmful components discharged from the adsorption / removal device. A heat storage type exhaust gas purifying device for purifying flammable harmful components, and a pair of each is provided in each of an even number of heat storage chambers, a combustion chamber connected to these even number of heat storage chambers, and an even number of heat storage chambers. The heat storage type exhaust gas purification device provided with a plurality of sets of dampers, and the exhaust air discharged from the adsorption / removal device are supplied to the heat storage type exhaust gas purification device and connected to each heat storage chamber of the heat storage type exhaust gas purification device. A shut-off damper for shutting off the supply of exhaust air, an outside air intake damper for taking outside air into the pipe, and a blower for supplying exhaust air are arranged in order from the upstream of the pipe. And a drain having This is an operation control method for the purification equipment, which supplies exhaust gas containing flammable harmful components to the adsorbent of the adsorption removal device, adsorbs the flammable harmful components by this adsorbent and removes it from the exhaust gas, A step of supplying high-temperature desorption air to desorb flammable harmful components adsorbed on the adsorbent, a step of supplying exhaust air discharged from the adsorption removal device to the regenerative exhaust gas treatment device through the piping, and heat storage By opening and closing multiple sets of dampers of the exhaust gas treatment system, exhaust air supplied from one of the even number of heat storage chambers is combusted in the combustion chamber to purify flammable harmful components contained in the exhaust air And 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 shut-off damper is closed, and the desorption air to the adsorption body of the adsorption removal device And stopping the supply, and a step of passing the respective the captured ambient air in an open state of the damper.

  In the second invention of the present invention, preferably, the concentration of the combustible harmful component contained in the exhaust air discharged from the adsorption removal device is greater than the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. Is also highly concentrated.

  In the second invention of the present invention, preferably, the exhaust gas purification equipment has a concentration meter for measuring the concentration of combustible harmful components in the exhaust air, and further combustible in the exhaust air measured by the concentration meter. When the concentration of the toxic harmful component is equal to or higher than a preset concentration, the method includes a step of diluting the flammable harmful component by taking in the outside air from the outside air intake damper.

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 explanatory drawing which shows the example of a change of the thermal storage type exhaust gas purification apparatus by embodiment of this invention. It is a whole block 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 the embodiment of this invention and its operation control method are 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 heat storage type exhaust gas purification device 4 that combusts and removes flammable harmful components of the exhausted air discharged from the air. A typical example of the heat storage type exhaust gas purification device 4 is an RTO (Regenerative Thermal Oxidizer).

  The continuous regeneration type concentrator 2 supplies an adsorbent 6 capable of adsorbing and desorbing flammable harmful components, and supplying desorption air having a high temperature to the adsorbent 6 to remove the flammable harmful components from the adsorbent 6. And a detachable air supply device 8. 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.

  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 heat storage type exhaust gas purifying device 4 includes an even number of heat storage chambers, that is, two heat storage chambers of the heat storage chamber 1 tower 12 and the 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 b 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. FIG. 1 shows a case where the supply damper 18a and the discharge damper 20b are in an open state and the supply damper 18b and the discharge damper 20a are in a closed state.

  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 includes 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 1 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 above-described detachable air supply device 8 through the duct 22.

The detachable air supply device 8 includes a mixing chamber 24 and a supply duct 26.
The mixing chamber 26 is connected to the combustion chamber 16 of the regenerative 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 sent to the mixing chamber 24 through the duct 22, mixed with the hot gas supplied from the combustion chamber 16 through the hot bypass damper 28 in the mixing chamber 24, heated, and supplied duct. 26 is supplied to the regeneration zone 6 b of the adsorbent 6 as desorption air for desorbing the combustible harmful components adsorbed on 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 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 outside 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 outside air intake damper 38. 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 38, 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 heat storage type exhaust gas purification device 4 through the bifurcated 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 exhaust duct 46 is connected to the combustion chamber 16 by a hot bypass damper 48 that can be opened and closed. The temperature sensors 50 and 52 are respectively provided in the heat storage chamber 1 tower 12 and the heat storage chamber 2 tower 14, and when the temperature measured by these temperature sensors 50 and 52 exceeds a predetermined temperature, the control device 32, the hot bypass damper 48 is opened, and excess heat can be released from the exhaust duct 46.

  A concentration meter 54 for measuring the concentration of the flammable harmful component is attached to the discharge duct 34, and the control device 32 (see FIG. 2) is blocked by the concentration of the flammable harmful component measured by the concentration meter 54. The opening and closing of the damper 36 is controlled.

  The combustion chamber 16 is provided with a burner 56 and a temperature sensor 58 that measures the temperature in the combustion chamber 16. The ignition and extinguishing control of the burner 56 is performed based on the temperature measured by the temperature sensors 50 and 52 described above. The temperature sensor 58 detects an abnormal increase in the temperature of the combustion chamber 16.

  Further, the bifurcated duct 42 and the bifurcated duct 44 are provided with temperature sensors 60 and 62, respectively.

  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.

  Next, an 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 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 6 c is mixed with the high-temperature gas supplied from the combustion chamber 16 in the mixing chamber 24 and heated, and then supplied to the regeneration zone 6 b of the adsorbent 6 through the supply duct 26.

  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. Then, it is supplied to the heat storage chamber 1 tower 12 of the heat storage type exhaust gas purification device 4.

  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 10a 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 heat storage type 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 direction in which the exhaust gas flows is switched after processing the exhaust gas 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.

  The switching of the exhaust gas flow direction is not the processing time, but the exhaust gas inlet temperature T1 measured by the temperature sensor 60 provided in the bifurcated duct 42 and the exhaust gas measured by the temperature sensor 62 provided in the bifurcated duct 44. You may make it carry out based on the difference with outlet temperature T2.

  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 shut-off damper 36 are closed, and the supply of desorption 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. 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 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 supply dampers 18a and 18b and the discharge dampers 20a and 20b can be opened and closed in conjunction with each other without switching the hot bypass damper 28 to the closed state.

  The concentration of combustible harmful components in the exhaust air is measured by the densitometer 54, and when the measured concentration is equal to or higher than a preset concentration, the opening degree of the outside air intake damper 38 is adjusted to remove the outside air. It can be supplied to exhaust air to dilute flammable harmful components. Thereby, in the heat storage type exhaust gas purification device 4, it is possible to prevent the explosion of the combustible harmful component of the exhaust air from being too high.

  According to the exhaust gas purification facility 1 and the operation control method of the exhaust gas purification facility 1 according to the embodiment of the present invention described above, switching of opening and closing of a plurality of dampers, that is, the supply dampers 18a and 18b and the exhaust dampers 20a and 20b is performed. When the damper to be switched becomes open at the same time, the outside air intake damper 38 is opened to take in outside air, and the shut-off damper 36 is closed to supply hot desorption air to the adsorbent. In addition to being interrupted, the introduced outside air can be passed through each of the open dampers, so that the exhaust air containing the combustible harmful components is discharged into the atmosphere without removing the combustible harmful components. Can be prevented.

  Next, with reference to FIG. 3, an exhaust gas purification facility and an operation control method thereof according to a modification of the embodiment of the present invention will be described.

The exhaust gas purification facility according to the above-described embodiment can be applied even when the heat storage type exhaust gas purification device includes four or more even number of heat storage chambers. Here, the heat storage type exhaust gas purification apparatus including an even number of heat storage chambers has a structure that does not include a heat storage chamber for purging.
As shown in FIG. 3, the heat storage type exhaust gas purifying apparatus according to this modification includes four heat storage chambers 1 tower 70, two heat storage chambers 72, three heat storage chambers 74, and four heat storage chambers 76. In this heat storage type exhaust gas purification apparatus, the damper is switched as follows. The heat storage chamber 3 tower 74 and the heat storage chamber 4 tower 76 have the same structure as the heat storage chamber 1 tower 70 and the heat storage chamber 2 tower 72, and the supply damper 18c, the exhaust damper 20c, the temperature sensor 78, the supply damper 18d, Each includes a discharge damper 20d and a temperature sensor 80.

Here, only the open damper is shown, and the remaining dampers are closed.
(A) Open state: supply dampers 18a and 18b, discharge dampers 20c and 20d
Gas flow: heat storage chamber 1 tower 70, heat storage chamber 2 tower 72 → combustion chamber 16 → heat storage chamber 3 tower 74, heat storage chamber 4 tower 76
(B) Open state: supply dampers 18b and 18c, discharge dampers 20a and 20d
Gas flow: 2 heat storage chambers 72, 3 heat storage chambers 74 → combustion chamber 16 → 1 heat storage chamber 70, 4 heat storage chambers 76
(C) Open state: supply dampers 18c and 1823d, discharge dampers 20a and 20b
Gas flow: heat storage chamber 3 tower 74, heat storage chamber 4 tower 76 → combustion chamber 16 → heat storage chamber 1 tower 70, heat storage chamber 2 tower 72
(D) Open state: supply dampers 18a and 18d, discharge dampers 20b and 20c
Gas flow: 1 heat storage chamber 70, 4 heat storage chambers 76 → combustion chamber 16 → 2 heat storage chambers 76, 3 heat storage chambers 74

  In this way, in a regenerative exhaust gas purification apparatus having an even number of heat storage chambers, exhaust air containing combustible harmful components burns and removes the combustible harmful components without providing a heat storage chamber for purging. It is possible to prevent being discharged into the atmosphere without being discharged. Thereby, exhaust gas purification equipment can be further reduced in size. Further, since the combustion chamber can be made small, fuel for maintaining the temperature can be reduced.

  Next, an exhaust gas purification facility according to another embodiment of the present invention will be described with reference to FIG. Since the basic structure of the exhaust gas purification equipment according to the other embodiment is the same as that of the exhaust gas purification equipment according to the embodiment of the present invention shown in FIG. 1, the same parts are denoted by the same reference numerals and description thereof is omitted. Hereinafter, mainly different parts will be described.

  The exhaust gas purification facility 80 according to another embodiment of the present invention does not have a continuous regenerative concentration device, but includes a heat storage type exhaust gas purification device 4. For this reason, in the exhaust gas purification facility 80, exhaust gas containing combustible harmful components discharged from upstream facilities (not shown) such as various production facilities and treatment facilities is directly discharged to the discharge duct 34, and this discharge It is supplied to the heat storage type exhaust gas purification device 4 through the duct 34.

  A storage tank 82 for temporarily storing exhaust gas is provided on the upstream side of the shutoff damper 36 of the discharge duct 34, and an open / close valve 84 is attached to the storage tank 82. This on-off valve 84 is normally kept closed.

  In the exhaust gas purification equipment 80, as in the equipment according to the embodiment of FIG. 1, when the supply dampers 18a and 18b and the exhaust dampers 20a and 20b are simultaneously opened, the outside air intake damper 38 is opened and the outside air is discharged into the exhaust duct. 34, and the shutoff damper 36 is closed so that the exhaust gas from the upstream facility is not supplied to the regenerative exhaust gas purification device 4. Thereby, the taken-in outside air passes through the supply dampers 18a and 18b and the discharge dampers 20a and 20b in the open state.

  At this time, the storage tank 82 is opened to temporarily store the exhaust gas from the upstream facility in the storage tank 82. As a result, in the exhaust gas purification facility 80 according to the present embodiment, it is not necessary to stop the operation of the upstream facility even when all of the dampers are open.

  According to the exhaust gas purifying device 80 according to the present embodiment, even when no continuous regenerative concentrating device is provided, exhaust gas containing combustible harmful components discharged from the upstream equipment is temporarily stored in the storage tank 82. Therefore, when the damper is simultaneously opened, the exhaust gas containing the combustible harmful component is not discharged into the atmosphere without removing the combustible harmful component by combustion.

1 Exhaust gas purification equipment 2 Continuous regeneration type concentrator (adsorption removal device)
4 Heat storage type exhaust gas purification device 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 Discharge duct 36 Cut off damper 38 Outside air intake damper 40 Blower 42, 44 Forked duct 46 Exhaust duct 54 Concentration meter

Claims (6)

An adsorption / removal device equipped with an adsorbent capable of adsorbing and desorbing flammable harmful components contained in exhaust gas, supplying exhaust gas containing flammable harmful components to the adsorbent, and adsorbing the flammable harmful components by this adsorbent And removing the flammable harmful components adsorbed on the adsorbent by supplying high-temperature desorption air to the adsorbent,
A regenerative exhaust gas purification device that purifies the combustible harmful components by burning exhaust air containing combustible harmful components discharged from the adsorption removal device, wherein the regenerative exhaust gas purification device has an even number of heat storage chambers. And a combustion chamber connected to these even number of heat storage chambers, opening and closing a plurality of pairs of dampers provided in pairs in each of the even number of heat storage chambers, and from any of the even number of heat storage chambers The regenerative exhaust gas purification device for purifying the combustible harmful components contained in the exhaust air by combusting the supplied exhaust air in a combustion chamber;
Exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and is connected to each heat storage chamber of the regenerative exhaust gas purification device. A shut-off damper that shuts off the supply, an outside air intake damper that takes outside air into the pipe, and a blower for supplying exhaust air;
When the plurality of sets of dampers are simultaneously opened, the outside air intake damper is opened, the outside air is taken into the pipe, the shutoff damper is closed, and the desorption air is supplied to the adsorption body of the adsorption removal device. And a control device that operates the outside air intake damper and the shut-off damper so that the taken outside air passes through each of the open dampers.   The concentration of the flammable harmful component contained in the exhausted air discharged from the adsorption removal device is higher than the concentration of the flammable harmful component contained in the exhaust gas supplied to the adsorption removal device. The exhaust gas purification equipment described.   Furthermore, it has a concentration meter for measuring the concentration of flammable harmful components in the exhaust air, and the control device is preset with the concentration of the flammable harmful components in the exhaust air measured by the concentration meter. The exhaust gas purification equipment according to claim 1 or 2, wherein when the concentration is equal to or higher than the concentration, the outside air intake damper is operated to take in outside air from the outside air intake damper to dilute combustible harmful components. An adsorption / removal device equipped with an adsorbent capable of adsorbing and desorbing combustible harmful components contained in exhaust gas;
A regenerative exhaust gas purification device that purifies the combustible harmful components by combusting exhaust air containing combustible harmful components discharged from the adsorption removal device, wherein the even number of heat storage chambers and these even number of heat storages The regenerative exhaust gas purification apparatus comprising a combustion chamber connected to the chamber, and a plurality of sets of dampers provided in pairs in each of the even number of heat storage chambers;
Exhaust air discharged from the adsorption removal device is supplied to the regenerative exhaust gas purification device, and is connected to each heat storage chamber of the regenerative exhaust gas purification device. An exhaust gas purification equipment operation control method comprising: a shut-off damper that shuts off supply, an external air intake damper that takes outside air into a pipe, and a pipe that is provided with a blower for supplying exhaust air. And
Exhaust gas containing flammable harmful components is supplied to the adsorbent of the adsorption / removal device, and the adsorbent adsorbs and removes flammable harmful components from the exhaust gas, and supplies hot desorption air to the adsorbent. Desorbing combustible harmful components adsorbed on the adsorbent, and
Supplying exhaust air discharged from the adsorption removal device to the heat storage exhaust gas treatment device through the pipe;
Combustible harmful substances contained in the exhaust air by opening and closing a plurality of sets of dampers of the heat storage type exhaust gas treatment device and combusting the exhaust air supplied from any of the even number of heat storage chambers in the combustion chamber Purifying the ingredients;
When the plurality of sets of dampers are simultaneously opened, the outside air intake damper is opened, the outside air is taken into the pipe, the shutoff damper is closed, and the desorption air is supplied to the adsorption body of the adsorption removal device. And passing the taken outside air through each of the open dampers, and
Control method of exhaust gas purification equipment having   The concentration of the combustible harmful component contained in the exhausted air discharged from the adsorption removal device is higher than the concentration of the combustible harmful component contained in the exhaust gas supplied to the adsorption removal device. The operation control method of the described exhaust gas purification equipment.   The exhaust gas purification equipment has a concentration meter that measures the concentration of flammable harmful components in the exhaust air, and the concentration of the flammable harmful components in the exhaust air measured by the concentration meter is preset. The exhaust gas purification equipment operation control method according to claim 4 or 5, further comprising a step of diluting a flammable harmful component by taking in outside air from the outside air intake damper when the concentration is higher than a given concentration.

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