JPH0743110B2 - Incinerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an incinerator for incinerating various wastes in various fields including medical wastes, food wastes and the like.

[0002]

2. Description of the Related Art Recently, proper treatment of waste is required in various fields of society, but at present, equipment for incineration by oil or gas burners, or incineration assisted combustion by them However, the gasification and combustion (decomposition and combustion) type incinerator and the incineration method are only adopted for a part of polymer materials.

Since waste disposal is not the manufacture or production of new products, many problems are still unsolved due to the extreme reduction of processing costs except for some public processing facilities. It is performed with the same processing device and processing method. As a result, the harmful substances contained in the waste are diffused by dissociation and generated by the treatment operation [SO _x , NO _x , HCl
, HCN, PCDDs (Polychlorinated dibenzo-p-dioxins)
, PCDFs (Polychlorinated dibenzofurans) etc.] often cause social problems such as air pollution as so-called secondary pollution.

[0004] Regarding wastes such as municipal wastes having a large number of unspecified emission sources and wastes generated in large-scale production plants, etc., although there is a tendency of separation treatment in recent years, it is still an ideal stage. Has not reached. Most of the waste is mixed and collected, transported and processed by public treatment facilities as business-related general waste, or incinerated by being mixed with other industrial waste. There are many leak problems and accidents in the process of a series of processes including.

In particular, so-called medical wastes generated at medical sites, for example, infectious wastes such as HIV, infectious hepatitis and other infectious diseases, excised organs, placenta, adhered substances such as blood and body fluids, patients Since the leftover food, the residue of urine and stool tests, etc. are at risk of secondary infection, it is desirable to selectively and rapidly treat them in a medical institution before mixing with other general waste for environmental hygiene. Such processing is also desired from the viewpoint of privacy protection and sensory aspects such as sight and smell. However, under the current circumstances as described above, there are not a few accidents involving discarded injection needles and sharp medical device waste. Various biochemical wastes such as carcasses and feces of experimental animals generated in pharmaceutical research / manufacturing sites, waste culture materials, etc. also have similar problems.

Since the residues of animal and plant foods generated in food processing factories, food counters, station buildings, etc. are highly putrefactive and easily give off a bad odor, they are also close to the generation site before mixing with other general waste. It is desirable to selectively and rapidly process.

However, most of the wastes in the above medical institutions, pharmaceutical research and manufacturing plants, or foods are flame-retardant containing a large amount of water and the like, so that the efficiency of conventional oil or gas burners is low. In order to bring these to complete combustion under radiation and conduction, it was necessary to perform appropriate operations such as manual stirring to accelerate heating and dehydration incineration. Therefore, it requires a great deal of labor, and it is difficult to completely incinerate it, and of course, there are many wastes that are highly perishable, give off a bad odor, and have a risk of infection. There was also a danger.

Further, in medical wastes, wastes containing explosive ignitable substances such as alcohol are often mixed, and the conventional direct incineration by oil or gas burner explosively ignites at the start thereof. There was a risk of causing.

The present invention has been made in view of the above problems existing in the prior art, and its object is a flame-retardant waste containing a large amount of water and the like. However, it is possible to incinerate easily and surely, and there is no need for agitation etc. to expand the heat-exposed area of the incinerator or improve heat-efficiency. Installed in the vicinity of the plant, waste that should be stocked and treated completely isolated from the general environment for the purpose of environmental hygiene preservation, and waste that has a strong perishability and gives off a bad odor, etc., without delay Explosive ignition can be prevented even when incinerated substances that have explosive ignitability such as alcohol, etc., can be processed promptly and appropriately, and the exhaust gas discharged has a thermally decomposable odor. For incinerators with almost no harmful substances, smoke, etc. To provide an incinerator which is capable of preventing the discharge of hazardous materials through the discharge means from the secondary combustion chamber to maintain the thermal decomposition temperature of deleterious substances or generated within the incinerator or Maretei.

[0010]

In order to achieve the above object, the incinerator of the present invention has a primary combustion chamber for containing incineration, a secondary combustion chamber, and a gas from the primary combustion chamber to the secondary combustion chamber. And a means for introducing waste gas, an exhaust means for exhausting the waste gas from the secondary combustion chamber, and a microwave generation means, wherein the primary combustion chamber is a microwave generation means in the incinerated matter stored therein. Microwave irradiation unit for irradiating the microwave generated in to dry and / or thermally decompose the microwave, first combustion means for flame incineration of the incinerated matter, and for measuring the temperature in the primary combustion chamber The secondary combustion chamber is equipped with a first temperature measuring means, and the secondary combustion chamber is equipped with a second combustion means for incinerating the gases introduced from the primary combustion chamber by flame.
And microwave irradiation from the microwave irradiation unit
As a result, the temperature measured by the first temperature measuring means does not reach the predetermined temperature.
Control means for actuating the first combustion means by
A step Y is provided.

Further, the incinerator of the present invention may be equipped with an oxygen-containing gas supply means for supplying the oxygen-containing gas into the primary combustion chamber.

Furthermore, in the incinerator of the present invention, the amount of oxygen-containing gas capable of purging the combustible gas existing inside the primary combustion chamber, the communication means, the secondary combustion chamber and the exhaust means through the exhaust means is the above-mentioned oxygen. A gas purge measuring means for measuring the supply into the primary combustion chamber by the contained gas supply means, and a second combustion means by measuring the supply of the oxygen-containing gas in the above amount into the primary combustion chamber by the gas purge measuring means. It is also possible to provide a control means W for operating the.

Further, the incinerator according to the present invention may be configured so that the oxygen-containing gas supplied by the oxygen-containing gas supply means is supplied into the primary combustion chamber through the vicinity of the microwave irradiation section. desirable.

Further, in the incinerator of the present invention, the second combustion means operates to detect that the secondary combustion chamber is in a state in which the gas introduced from the primary combustion chamber can be incinerated. Means and the detection means detect that the second combustion means is activated and the secondary combustion chamber is in a state where the gases introduced from the primary combustion chamber can be incinerated. A control means X for starting the irradiation of microwaves may be provided.

[0015]

Further, the incinerator of the present invention compares the second temperature measuring means for measuring the temperature in the secondary combustion chamber with the temperature measured by the second temperature measuring means and the set temperature to make the secondary temperature. Control means for adjusting the combustion characteristics of the second combustion means so that the temperature in the combustion chamber is maintained above a preset temperature.
It is desirable to have Z.

[0017]

According to the first aspect of the present invention, the incinerator is housed in the primary combustion chamber, and then the second combustion means is activated to incinerate the gases introduced from the primary combustion chamber into the secondary combustion chamber. After that, when microwave irradiation of the incinerator is started from the microwave irradiation part of the primary combustion chamber, the incinerator in the primary combustion chamber generates heat from the inside due to this microwave irradiation, and the moisture, alcohol, etc. The liquid of (1) efficiently evaporates to dry the incinerator, and also causes thermal decomposition of the incinerator. Unlike the one by surface heating, there is no need for agitation or the like for enlarging the area to be incinerated to be heated and for improving the efficiency of heating, and it is also effective for heating the residual liquid in the glass container. Gases generated by evaporation or thermal decomposition are introduced into the secondary combustion chamber through the communication means and incinerated in the secondary combustion chamber. As a result, deodorization of thermally decomposable odorous gases and thermal decomposition of harmful gases are performed.

Irradiation of microwave from microwave irradiation unit
As a result, the temperature measured by the first temperature measuring means does not reach the predetermined temperature.
By doing so, it is possible to control that the incineration of the incinerated material has been facilitated.
The control means Y automatically checks and activates the first combustion means.
It Then, the incinerated matter is efficiently incinerated in the primary combustion chamber in a short time. Even if the incineration material contains explosive ignitable substances such as alcohol, the alcohol evaporates by the microwave and is incinerated in the secondary combustion chamber.
By activating the combustion means, explosive ignition is prevented. The generated combustion exhaust gas, so-called smoke such as unburned carbon, and the like are guided to the secondary combustion chamber through the communication means and are almost completely incinerated in the secondary combustion chamber. The microwave irradiation from the microwave irradiation unit may be stopped or continued.

The waste gas incinerated in the secondary combustion chamber as described above and having almost no odor, harmful substances, smoke, etc. is exhausted through the exhaust means.

According to the second aspect of the invention, after the incinerated matter is stored in the primary combustion chamber and before the second combustion means is operated, a sufficient amount of oxygen-containing gas is provided in the primary combustion chamber by the oxygen-containing gas supply means. When the gas is supplied, combustible gas such as alcohol gas that has spread to the inside of the primary combustion chamber, the communication means, the secondary combustion chamber, and the exhaust means along with the incinerated matter is purged through the exhaust means. After that, if the second combustion means is operated, explosive ignition of the combustible gas is prevented.

According to the third aspect of the present invention, the gas purge measuring means is used to purge the primary combustion chamber, the communicating means, the secondary combustion chamber and the exhaust means from the exhaust means to purge the combustible gas present in the interior of the primary combustion chamber. When the supply into the combustion chamber is measured, the control means W activates the second combustion means.

In the invention of claim 4, when the oxygen-containing gas supply means is operated during the operation of the first combustion means, the oxygen-containing gas is supplied into the primary combustion chamber through the vicinity of the microwave irradiation part. (1) The microwave irradiation unit is prevented from being damaged by the heat generated by the operation of the combustion means and the combustion of the incineration material.

According to the fifth aspect of the invention, when the detection means detects that the second combustion means is activated and the gas introduced from the primary combustion chamber can be incinerated in the secondary combustion chamber. The control unit X automatically starts irradiation of microwaves from the microwave irradiation unit.

[0024]

In the sixth aspect of the present invention, the control means Z compares the temperature measured by the second temperature measuring means with the set temperature to adjust the combustion characteristics of the second combustion means to adjust the combustion characteristics of the secondary combustion chamber. The temperature is maintained above the set temperature.

[0026]

Embodiments of the present invention will be described with reference to the drawings. 1 and 2 show one embodiment of the incinerator of the present invention. FIG. 1 is an explanatory view, in which (a) is a front view of the incinerator main body A and (b) is a plan view thereof. FIG. 2 is a right side view of the incinerator body A.

Reference numeral 10 denotes a substantially cylindrical primary combustion chamber having an outer shell made of a steel plate and an inner wall lined with a refractory material. The primary combustion may be performed by, for example, forming an outer shell and an inner wall with a steel plate and filling a gap between them with a heat insulating material. Reference numeral 12 denotes a substantially cylindrical secondary combustion chamber having an outer shell made of a steel plate and an inner wall lined with a refractory material, and is disposed above the primary combustion chamber 10. 14
Is an exhaust pipe (an example of exhaust means) having a substantially cylindrical shape, the outer shell of which is a steel plate and the inner wall of which is lined with a refractory material. The exhaust pipe 14 has a lower end opening to the upper end of the secondary combustion chamber 12 and an upper end opening upward. Reference numeral 16 is an exhaust port provided in the front upper end portion of the primary combustion chamber 10 for exhausting the generated gases in the primary combustion chamber 10. 18 is
It is an inlet for introducing gases into the secondary combustion chamber 12, and is provided at the side of the lower end of the secondary combustion chamber 12.
Reference numeral 20 denotes a gas supply duct (an example of a communicating means) in which the outer shell is a steel plate and the inner wall is a refractory material.
The gas supply duct 20 is provided over the discharge port 16 and the introduction port 18, and extends from the primary combustion chamber 10 to the secondary combustion chamber 12
Gas is introduced into. Primary combustion chamber 1 above
0, secondary combustion chamber 12, exhaust stack 14 and gas feed duct 2
0 mainly constitutes the incinerator main body A.

Reference numeral 22 is an operation control panel provided with a power distribution device for receiving power and distributing it to each device and equipment, a control device for controlling each device and equipment, and an operation device for operating each device and equipment. . The wiring is not shown.

Reference numeral 24 is an insertion port for inserting the incineration material into the primary combustion chamber 10, and is provided at the rear upper end of the primary combustion chamber 10. Reference numeral 26 denotes an openable / closable lid for closing the insertion port 24, and includes a clamp device 28. Reference numeral 30 denotes a residue discharge port for discharging the residue after incineration, which is provided on the front side of the lower end portion of the primary combustion chamber 10. Reference numeral 32 denotes an openable / closable lid for closing the residue discharge port 30, and includes a clamp device (not shown).

Reference numeral 36 denotes a first gas burner (an example of first combustion means) provided at the rear portion of the lower end of the primary combustion chamber 10, and 38 denotes
It is a first frame sensor for detecting the flame of the first gas burner 36. The start and stop of the first gas burner 36 and the combustion characteristics are electrically controlled by the control device of the operation control panel 22. The information sensed by the first frame sensor 38 is transmitted to the control device of the operation control panel 22 as an electric signal. As the first combustion means, it is of course possible to adopt another known combustion means such as an oil burner.

Reference numeral 40 denotes a microwave irradiating unit for irradiating the incineration material contained in the primary combustion chamber 10 with microwaves. In order to irradiate the entire incineration product, the microwave irradiation unit 40 is provided at three positions on the upper, middle and lower side walls of the primary combustion chamber 10 as shown in FIG. 1 (a). The position of the microwave irradiation part 40 of FIG.
The central angle is about 120 degrees as shown in FIG. The irradiation angle is set to about 15 to 30 degrees in consideration of the propagation characteristics. Of course, the arrangement and the irradiation angle of the microwave irradiation unit 40 can be appropriately selected according to the characteristics such as the shape of the primary combustion chamber 10. It is also possible to place it on the ceiling. In order to prevent the irradiated microwaves from leaking to the outside of the incinerator body A through the gas supply duct 20, the secondary combustion chamber 12 and the exhaust stack 14, a conductive material such as metal having high heat and corrosion resistance. Thereby forming a mesh size mesh that is effective in preventing leakage according to the wavelength of the microwave, and uses it to form a microwave leakage path, for example, the gas feed duct 20.
It is desirable to stretch over the entire cross section as appropriate. Since the temperature inside the exhaust pipe 14 becomes high, it is practically difficult to stretch such a mesh. Therefore, normally, the exhaust stack 14 is attached in a chimney arrester shape that is generally found.

Reference numeral 42 denotes an air supply unit with a metering pressure regulating valve for supplying air (an example of an oxygen-containing gas) into the primary combustion chamber 10. In this embodiment, the air supply unit 42 has each micro It is provided at the same location as the wave irradiator 40, so that the air supplied from the air supplier 42 is supplied into the primary combustion chamber 10 through the vicinity of the microwave irradiator 40. The operation of the metering pressure regulating valve of the air supply unit 42 is electrically controlled by the control device of the operation control panel 22.

Reference numeral 44 is a first temperature sensor provided on the upper end side of the primary combustion chamber 10 for measuring the temperature in the primary combustion chamber 10. The temperature information sensed by the first temperature sensor 44 is transmitted to the control device of the operation control panel 22 as an electric signal.

Reference numeral 46 is a second gas burner (an example of a second combustion means) arranged at the lower end of the secondary combustion chamber 12, and 48 is a second flame sensor for detecting the flame of the second gas burner 46. is there. The starting and stopping of the second gas burner 46 and the combustion characteristics are electrically controlled by the control device of the operation control panel 22. The information sensed by the second frame sensor 48 is transmitted to the control device of the operation control panel 22 as an electric signal. Of course, it is also possible to adopt other known combustion means such as a gas burner as the second combustion means.

Reference numeral 50 is a second temperature sensor provided on the upper end side portion of the secondary combustion chamber 12 for measuring the temperature in the secondary combustion chamber 12. The temperature information sensed by the second temperature sensor 50 is transmitted to the control device of the operation control panel 22 as an electric signal.

Reference numeral 52 is a blower for supplying air to the air supply unit 42 and the first gas burner 36 and the second gas burner 46, that is, an air supply source. Air from the blower 52 is supplied to each air supply unit 42, the first gas burner 36, and the second gas burner 46 via the air supply pipe 54. Starting and stopping of the blower 52 are electrically controlled by the control device of the operation control panel 22. The blower 52, the air supply pipe 54, and the air supply unit 42 constitute an example of oxygen-containing gas supply means. As an air supply source,
Known means such as a compressor can be appropriately adopted.

Reference numeral 56 is an LPG cylinder for supplying LPG to the first gas burner 36 and the second gas burner 46, that is, a fuel supply source. In the case of a gas burner, it also serves as a city gas terminal, and in the case of an oil burner, it serves as a service tank for fuel oil such as heavy oil and kerosene. The LPG from the LPG cylinder 56 is supplied to the first gas burner 36 and the second gas burner 46 via the fuel supply pipe 58. L
The opening / closing of the PG cylinder 56 is electrically controlled by the control device of the operation control panel 22.

Reference numeral 60 denotes an ISM band 2450 MHz or 915 M, which is internationally assigned for industrial use, medical use, etc.
It is a microwave oscillating device (an example of a microwave generating means) that generates a microwave of Hz. Microwave oscillator 6
The start and stop of 0 and the output are electrically controlled by the control device of the operation control panel 22. The microwave generated in the microwave oscillating device 60 is transmitted to the microwave irradiator 40 via the waveguide 62. It is also possible to use means other than the waveguide for the transmission. It is also possible to integrally configure the microwave generator and the microwave irradiator.

The incineration materials are collectively inserted from the insertion port 24 into the primary combustion chamber 10 of the incinerator as described above, and the lid 2
After 6 is closed and fixed by the clamp device 28, the incineration process is started by the operation device of the operation control panel 22.
Then, the control device opens the metering pressure regulating valve of each air supply unit 42 and starts the blower 52, so that the primary combustion chamber 10
Since air is fed into the interior, flammable gas such as alcohol gas that may spread inside the primary combustion chamber 10, the gas feed duct 20, the secondary combustion chamber 12, and the exhaust stack 14 along with the incinerated matter, It is purged through the exhaust stack 14.

A sufficient amount of air for purging almost all the combustible gas existing inside the primary combustion chamber 10, the gas supply duct 20, the secondary combustion chamber 12, and the exhaust stack 14 is supplied to the primary combustion chamber 1.
When the control device of the operation control panel 22 measures the supply to the inside of 0 by the built-in timer means, the control device supplies the LPG from the LPG cylinder 56 and the second
The gas burner 46 is started ( control means W 1 ), a flame is formed in the secondary combustion chamber 12, and the inside of the secondary combustion chamber 12 and the exhaust pipe 14 are heated. Since the second gas burner 46 is started after the combustible gas is purged, the explosive ignition of the combustible gas is reliably prevented. If no combustible gas is present, such a purging step is of course unnecessary.

Based on the information detected by the second flame sensor 48 and the second temperature sensor 50, the combustion is started and the flame is stabilized, and the gases introduced from the primary combustion chamber 10 into the secondary combustion chamber 12 can be incinerated. When it is confirmed by the control device of the operation control panel 22 that the set temperature is reached, the microwave oscillation device 6 is controlled by the control device.
0 is started ( control means X 1 ). Microwave oscillator 6
The microwave generated at 0 is radiated from the microwave irradiator 40 to the incinerator in the primary combustion chamber 10 through the waveguide 62. Then, the incineration product generates heat from the inside, and the contained water, alcohol, and other liquids are efficiently evaporated without the need for agitation to expand the heated area of the incineration product and improve the efficiency of the incineration product. As it dries, thermal decomposition of the incineration also occurs, making it easy to burn. It is also effective for heating the residual liquid in the glass container. When the microwave output is 8 kW and the incinerated matter is 45 kg, the temperature in the primary combustion chamber 10 is 100 to 150 minutes after the start of microwave irradiation,
For example, it becomes 120 to 150 ° C. When the microwave output is constant, the temperature in the primary combustion chamber 10 suddenly rises in a quadratic curve as the irradiation time elapses. The reason is that in the initial stage, the temperature rise was stagnant due to the loss to the lining and the heat of vaporization of the liquid such as water, and in the latter half, the carbonization of the incineration started partially and the incident efficiency was improved. Conceivable. Gases generated by evaporation or thermal decomposition are guided to the secondary combustion chamber 12 through the gas feed duct 20 and incinerated in the secondary combustion chamber 12. As a result, deodorization of thermally decomposable odorous gases and thermal decomposition of harmful gases are performed.

The information on the temperature in the primary combustion chamber 10 which rapidly rises by the microwave irradiation is sensed by the first temperature sensor 44 and transmitted to the control device. It is desirable that the output of the microwave oscillating device 60 is appropriately adjusted by the control means according to the temperature change sensed by the first temperature sensor 44.

The controller controls that the temperature sensed by the first temperature sensor 44 is a predetermined temperature (for example, 120 to 150).
When it is confirmed that the incineration of the incinerated material has been facilitated due to the temperature rise (° C), the first gas burner 36 is started ( control
Means Y ). Then, the incinerated matter is, for example, 800 ° C. or higher or 1000 ° C. in the primary combustion chamber 10 due to the flame of the first gas burner 36 or the auxiliary combustion by the flame.
Efficiently incinerated at the above high temperature in a short time. Even if the incinerator contains a substance having explosive ignition properties such as alcohol, the first gas burner 3 is used after the alcohol or the like is evaporated by the microwave and incinerated in the secondary combustion chamber 12.
Explosive ignition is prevented because it operates 6. At the time when the temperature in the primary combustion chamber 10 reaches 120 to 150 ° C., the water used in the first gas burner 36 is not wasted and accompanies the incinerated matter because the moisture is evaporated and the combustion is facilitated. Explosive combustion of substances is also prevented. By starting the first gas burner 36, the temperature in the primary combustion chamber 10 is almost instantaneously increased to 400 to 500.
The temperature rises to 800 ° C. or higher after about 5 to 6 minutes.

Since the air supplied from the air supply unit 42 is supplied into the primary combustion chamber 10 through the vicinity of the microwave irradiation unit 40, the heat generated by the combustion of the flame of the first gas burner 36 and the incineration product is thereby generated. Microwave irradiation unit 40
Is prevented from being damaged. The air is also used as air for burning the incineration material in the primary combustion chamber 10. The microwave irradiation from the microwave irradiation unit 40 may be stopped or continued. It should be noted that, if necessary, if a water cooling device that can cool the microwave irradiation portion with water is provided, damage to the microwave irradiation portion can be prevented more effectively.

Combustion waste gas generated by the combustion of the first gas burner 36 and the incineration, so-called smoke such as unburned carbon, etc., is introduced into the secondary combustion chamber 12 through the gas feed duct 20,
It is incinerated almost completely in the secondary combustion chamber 12. If the temperature in the primary combustion chamber 10 is 800 ° C. or higher as described above, the combustion waste gas is immediately supplied to the secondary combustion chamber 12, and the combustion of the second gas burner 46 is combined, so that the exhaust stack 14 It is extremely easy to maintain the temperature of the exhaust gas discharged from the vehicle at 700 ° C or higher, which is the standard set by law. The waste gas from which odors, harmful substances, smoke, etc. are almost eliminated by this incineration is exhausted through an exhaust means. In this embodiment, harmful substances contained in the incinerator or generated in the incinerator, for example, a set temperature set above the thermal decomposition temperature of HCN, PCDDs, PCDFs, and the like, and measurement by the second temperature sensor 50 The temperature thus controlled is compared with the control device of the operation control panel 22 to adjust the combustion characteristics of the second gas burner 46, so that the temperature in the secondary combustion chamber 12 is automatically maintained at substantially the set temperature or higher ( control Means Z ). for that reason,
It is possible to effectively prevent harmful substances from being discharged through the exhaust stack 14.

It should be noted that odorous or harmful substances which are so-called fumes and vapors such as metal-containing inorganic substances and inorganic compounds, which do not undergo thermal decomposition or have a very high thermal decomposition temperature, are discharged. In such a case, it is desirable to separate these substances by providing a known exhaust gas treatment device such as a scrubber in the stage subsequent to the exhaust means of the device of the present invention.

As described above, the temperature in the secondary combustion chamber 12 set in the control device of the operation control panel 22 is usually 700 to 12 when the temperature of the exhaust gas discharged from the exhaust pipe 14 is 700 to 12.
The temperature is set to 00 ° C. Chlorine compounds in the incineration,
When a fluorine compound or the like is to be mixed, it is desirable to set the temperature of the exhaust gas to be 1350 to 1400 ° C.

Such a set temperature is set at the second gas burner 4
Achieved and maintained by controlled combustion continuity of 6. The set temperature can be reached, for example, 1 time after the second gas burner 46 is started.
About 5 minutes.

After that, when the control device detects the completion of incineration of the incineration material in the primary combustion chamber 10 based on the temperature information sensed by the first temperature sensor 44, the control device causes L
The supply of LPG from the PG cylinder 56 is stopped, and the operations of the first gas burner 36, the second gas burner 46, and the microwave oscillating device 60 are stopped. Then
When the first temperature sensor 44 detects that the temperature in the primary combustion chamber 10 has dropped to a temperature at which residues can be discharged, for example, about 100 ° C. or less, the control device blows the blower 5
2 is stopped and the metering pressure regulating valve of each air supply unit 42 is closed. After that, if the lid 32 of the residue discharge port 30 is opened, the residue can be discharged using a discharging tool.

Test incineration result The output of the first gas burner 36 is 50,000 kcal / h.
r, the output of the second gas burner 46 is 70,000 kcal /
hr, microwave oscillating device 60 is 2450MHz / 10
With the incineration apparatus of the above example having a power of kW, 35 kg of spoiled live fish (water content about 73%) and spoiled raw pork (water content about 70
%) 10 kg, a total of 45 kg of the mixed incineration test incineration results were as follows.

[Table 1] [Drying / incineration period: microwave output 8 kW, second gas burner 46 output 70,000 kcal
Operation]

[0052]

[Table 1]

Table 2 [Complete incineration period: Microwave output 8k
W, 1st gas burner 36 output 50000kcal, 2nd
Gas burner 46 output 70,000 kcal operation]

[0054]

[Table 2]

Although the above embodiments have been described for the case of automatic control, manual control is also possible.

[0056]

In the incinerator according to the first aspect of the present invention, the incinerator is housed in the primary combustion chamber, and the secondary combustion chamber is activated by the operation of the second combustion means to make it possible to incinerate the introduced gases. When starting the irradiation of microwave from the parts, micro
The first temperature measurement is performed by microwave irradiation from the wave irradiation unit.
Incineration when the temperature measured by the stage reaches the specified temperature
The control means Y automatically confirms that the material is easily burnt.
Since the first combustion means is activated, the incinerated matter is first dried and thermally decomposed by the microwave to be easily combusted, and then the incinerated matter is efficiently operated in the primary combustion chamber in a short time by the operation of the first combustion means. To be incinerated. Therefore, even a flame-retardant waste containing a large amount of water or the like can be incinerated easily, reliably, and efficiently in a short time. Further, even in the case of an incineration product containing an explosive ignitable substance such as alcohol, the alcohol or the like is evaporated by the microwave and is incinerated in the secondary combustion chamber, and then the first combustion means is operated. Explosive ignition is prevented.

Further, gases generated by evaporation and thermal decomposition in the process of incineration of the incinerated matter, combustion exhaust gas generated by incineration of the incinerated matter, so-called smoke, etc., are all in the secondary combustion chamber. Waste gas, which has been incinerated at odor, harmful substances, smoke, etc., is exhausted through the exhaust means, so that the problem of environmental pollution can be prevented.

Combustion by microwaves is carried out by generating heat from the inside of the incinerated material, and is also effective for heating the residual liquid in the container, for example, the residual liquid in the glass container used for blood test or urine test. From the fact that, if it is an incinerated substance after easy combustion, it can be efficiently incinerated as it is by the first combustion means,
There is no need for agitation or the like for enlarging the area to be incinerated to be heated or improving the efficiency of heating, and this also solves safety and health problems. Therefore, coupled with a simple device, it can be easily and safely incinerated by being installed near each waste generation site, and medical waste and various biochemical wastes during pharmaceutical research and manufacturing, etc. For the purpose of environmental hygiene preservation, the waste that should be stocked and treated completely isolated from the general environment, and the waste that has strong perishability and gives off a bad odor, etc. shall be promptly and appropriately treated without any delay from the time of occurrence. It is possible.

In the incinerator according to the second aspect, after the incinerated matter is stored,
If a sufficient amount of the oxygen-containing gas is supplied to the primary combustion chamber by the oxygen-containing gas supply unit before the second combustion unit is activated, the combustible gas that may accompany the incinerator and fill the inside of the incinerator through the exhaust unit. It is purged and explosive ignition of the combustible gas due to the operation of the second combustion means is prevented.

In the incinerator according to the third aspect of the present invention, the amount of oxygen-containing gas capable of purging the combustible gas existing in the primary combustion chamber, the communicating means, the secondary combustion chamber and the exhaust means by the gas purge measuring means through the exhaust means is the primary. When the supply into the combustion chamber is measured, the control unit W activates the second combustion unit, so that explosive ignition of the combustible gas is automatically prevented.

In the incinerator according to the fourth aspect, when the oxygen-containing gas supply means is operated during the operation of the first combustion means, the oxygen-containing gas is supplied into the primary combustion chamber through the vicinity of the microwave irradiation section. (1) The microwave irradiation unit is prevented from being damaged by the heat generated by the operation of the combustion unit and the combustion of the incineration material, and the durability of the entire incinerator is improved.

In the incinerator according to the fifth aspect, when the detection means detects that the second combustion means is activated and the gas introduced from the primary combustion chamber can be incinerated by the detection means. The control unit X automatically starts irradiation of microwaves from the microwave irradiation unit. for that reason,
Gases generated by evaporation or thermal decomposition due to microwave irradiation are securely incinerated in the secondary combustion chamber.

[0063]

In the incinerator according to the sixth aspect , the control means Z compares the temperature measured by the second temperature measuring means with the set temperature to adjust the combustion characteristic of the second combustion means,
Since the temperature in the secondary combustion chamber is maintained above the set temperature, the thermal decomposition temperature of harmful substances contained in the incinerator or generated in the incinerator can be maintained and discharged from the secondary combustion chamber through the discharge means. It is possible to prevent the discharge of harmful substances.

[Brief description of drawings]

FIG. 1 is an explanatory diagram.

FIG. 2 is a right side view of the incinerator body.

[Explanation of sign]

 10 Primary Combustion Chamber 12 Secondary Combustion Chamber 14 Exhaust Cylinder 20 Gas Supply Duct 22 Operation Control Panel 36 First Gas Burner 40 Microwave Irradiation Section 42 Air Supply Section 44 First Temperature Sensor 46 Second Gas Burner 50 Second Temperature Sensor 52 Blower 54 Air Supply Pipe 60 Microwave Oscillator

Claims (6)

[Claims] 1. A primary combustion chamber for containing incinerated matter, a secondary combustion chamber, a communication means for introducing gases from the primary combustion chamber to the secondary combustion chamber, and for exhausting waste gas from the secondary combustion chamber. The exhaust means and the microwave generation means are provided, and the primary combustion chamber irradiates the contained incinerator with the microwave generated in the microwave generation means to dry and / or dry the same.
Or a microwave irradiation unit for thermal decomposition, a first combustion unit for flame incineration of the incineration product, and a first temperature measurement unit for measuring the temperature in the primary combustion chamber,
The secondary combustion chamber is equipped with a second combustion means for flame incineration of the gases introduced from the primary combustion chamber, and further,
An incinerator comprising control means Y for operating the first combustion means when the temperature measured by the first temperature measurement means reaches a predetermined temperature due to the irradiation of microwaves from the microwave irradiation part. 2. The incinerator according to claim 1, further comprising an oxygen-containing gas supply means for supplying an oxygen-containing gas into the primary combustion chamber. 3. An oxygen-containing gas in an amount capable of purging the combustible gas existing inside the primary combustion chamber, the communicating means, the secondary combustion chamber and the exhaust means through the exhaust means by the oxygen-containing gas supply means. And a gas purge measuring means for measuring the supply of the oxygen-containing gas to the primary combustion chamber by the gas purge measuring means for operating the second combustion means.
The incinerator according to claim 2, further comprising control means W. 4. The incinerator according to claim 2, wherein the oxygen-containing gas supplied by the oxygen-containing gas supply means is configured to be supplied into the primary combustion chamber through the vicinity of the microwave irradiation section. 5. A detection means for detecting that the second combustion means is activated and the secondary combustion chamber is in a state where the gases introduced from the primary combustion chamber can be incinerated, and the detection means. When it is detected that the second combustion means is activated and the gas introduced from the primary combustion chamber can be incinerated in the secondary combustion chamber, microwave irradiation from the microwave irradiation unit is started. The incinerator according to claim 1, claim 2, claim 3 or claim 4, comprising a control means X for 6. A second for measuring the temperature in the secondary combustion chamber.
The temperature measured by the temperature measuring means and the temperature measured by the second temperature measuring means are compared with the set temperature, and the combustion characteristics of the second combustion means are adjusted so that the temperature in the secondary combustion chamber is maintained substantially above the set temperature. The incinerator according to claim 1, claim 2, claim 3, claim 4 or claim 5, comprising a control means Z for