JP2008155202A - Method and apparatus for heat-treating waste including organic halogen compound using platinum-based catalyst device or palladium-based catalyst device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for heat-treating waste including an organic halogen compound in a reduction condition (hypoxic condition) in a furnace, by which the amount of carbon monoxide discharged from the apparatus is reduced. <P>SOLUTION: A halogen compound, tar mist, or the like is removed from an exhaust gas exhausted from the furnace by an exhaust gas-cleaning device composed of a bug filter and an oil scrubber, and the exhaust gas is reheated and brought into contact with a platinum-based catalyst or palladium-based catalyst, so that carbon monoxide not treated by the exhaust gas-cleaning device is stably oxidized to carbon dioxide for a long time, while suppressing poisoning deterioration of the platinum-based catalyst or palladium-based catalyst which is caused by the halogen compound such as hydrochloric acid, tar mist, or the like. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a processing method and a processing apparatus for thermally decomposing solid waste containing organic halides including organic chlorine compounds such as PCB, and carbon monoxide contained in exhaust gas discharged from a heating furnace. Is oxidized to carbon dioxide by a platinum-based catalyst or a palladium-based catalyst.

  Persistent organic pollutants such as organochlorine pesticides, PCBs (polychlorinated biphenyls), and dioxins are difficult to decompose in the environment, accumulate in the body, and may cause health damage such as teratogenicity. There is an urgent need to safely detoxify, prevent the spread of pollution, and reduce environmental risks.

  As one of the methods for detoxifying soils contaminated with organic halogen compounds, a technique for degrading organic halogen compounds by heating or burning the contaminated soils and detoxifying the soils is known. ing.

  As one such technique, after adding sulfur compound-containing materials such as coal and petroleum to soil contaminated with organochlorine compounds, heat treatment in a pyrolysis furnace, and regenerating the generated gas However, this is disclosed in Patent Document 1.

  Patent Document 2 discloses a treatment method in which soil contaminated with dioxins is heated at 400 to 600 ° C. to evaporate dioxins, and the dioxins evaporated are thermally decomposed in a decomposition furnace.

  Patent Document 3 discloses a purification device that heats contaminated soil with a rotary kiln equipped with a burner and burns gasified contaminants in a combustion furnace. In this purification apparatus, it is preferable that the furnace temperature of the combustion furnace is 800 ° C. or higher at which incineration of dioxins and the like is possible.

Furthermore, it is a method for treating exhaust gas discharged from a heat treatment apparatus that heat-treats an object contaminated with an organic halogen compound, and collects dust in the exhaust gas by filtration and dust collection at a temperature of 350 to 600 ° C. A dust collecting treatment step, and an oil-cleaning gas washing treatment step for removing organic halogen compounds in the exhaust gas by contacting the exhaust gas from which dust has been removed and cooled to 100 to 250 ° C. with a washing oil of 50 ° C. or less. An exhaust gas treatment method including this is disclosed in Patent Document 4.
Japanese Patent Laid-Open No. 9-192641 Japanese Patent Application Laid-Open No. 2000-279942 JP 2003-266058 A Japanese Patent No. 3811705

  When heating or incinerating soil contaminated with an organic halogen compound, it is necessary not only to be efficiently decomposed or burned, but also to prevent the generation of dioxins. For this purpose, it is necessary to heat-treat the contaminated soil or the like at a temperature of 800 ° C. or higher, which is a temperature at which dioxins oxidatively decompose, or to heat-treat in a low oxygen atmosphere (low oxygen state).

  However, even if a pressure oxidation heating furnace that forcibly introduces air into the incinerator is used, it is difficult to uniformly maintain the entire soil and the like existing in the heating furnace at 800 ° C. or higher. In addition, compared with heat treatment in a low-oxygen atmosphere, the amount of energy consumption is large, and damage to equipment due to high temperatures is also a problem. This is the same for the techniques disclosed in Patent Documents 1 to 3 in which gaseous pollutants are secondarily burned, and the amount of exhaust gas is increased by about 40 times compared to a normal reduction heat treatment apparatus. There is also a problem.

  Further, in the heat treatment method disclosed in Patent Document 4, when the processing object contains a large amount of organic matter, carbon monoxide gas accompanying incomplete combustion is discharged from the heating device by reduction heating of the organic matter, which is There was a problem that it was not treated by a wet cleaning device such as a high-temperature bag filter, an oil scrubber, or an activated carbon adsorbing device, and was released into the atmosphere as it was.

  Therefore, the present invention provides a method and apparatus for heat-treating waste containing an organic halogen compound in a reduced state (= low oxygen state, in the present invention, a state having an oxygen concentration of 0.5 volume% to 5 volume%) in a heating furnace. An object of the present invention is to reduce the amount of carbon monoxide discharged from the heat treatment apparatus.

  When the present inventors heat-treat waste containing an organic halogen compound in a low oxygen atmosphere, the halogen compound, tar mist, etc. in the exhaust gas discharged from the heating furnace by the exhaust gas cleaning device consisting of a bag filter and an oil scrubber After removing the catalyst, it is reheated and brought into contact with a platinum-based catalyst or a palladium-based catalyst (platinum, palladium and its alloys, and inorganic compounds of these metals). Alternatively, the present inventors have found that carbon monoxide that cannot be treated by the exhaust gas cleaning apparatus can be stably oxidized to carbon dioxide for a long period of time while suppressing poisoning deterioration of the palladium-based catalyst, and the present invention has been completed.

Specifically, the present invention
A heating furnace that heat-treats waste containing an organic halogen compound in a low-oxygen atmosphere;
An inert gas supply device for supplying an inert gas to the heating furnace;
An exhaust gas cleaning device comprising a bag filter and an oil scrubber for purifying the exhaust gas of the heating furnace;
A platinum-based catalyst device or a palladium-based catalyst device;
A waste heat treatment method using a waste heat treatment apparatus comprising:
By reheating the exhaust gas after purification by the exhaust gas cleaning device and passing the platinum catalyst device or the palladium catalyst device, carbon monoxide in the exhaust gas after purification is oxidized to carbon dioxide. The present invention relates to a waste heat treatment method.

The present invention also provides:
A heating furnace that heat-treats waste containing an organic halogen compound in a low-oxygen atmosphere;
An inert gas supply device for supplying an inert gas to the heating furnace;
An exhaust gas cleaning device comprising a bag filter and an oil scrubber for purifying the exhaust gas of the heating furnace;
A platinum-based catalyst device or a palladium-based catalyst device;
A waste heat treatment apparatus comprising:
The waste heat treatment apparatus characterized in that carbon dioxide in the exhaust gas after purification is oxidized to carbon dioxide by reheating the exhaust gas after purification in the exhaust gas cleaning device and passing through the platinum catalyst device. (Claim 7).

  When waste containing organic halogen compounds is heat-treated in a low-oxygen atmosphere (reduced state), if the waste contains a large amount of organic matter such as wood, paper, rubber, plastic, oil, etc., exhaust gas discharged from the heating furnace The concentration of carbon monoxide is as high as several thousand ppm, and at the same time, halogen compounds, tar mist, etc. are generated. In the present invention, the exhaust gas cleaning device comprising a bag filter and an oil scrubber removes halogen compounds and tar mist in the exhaust gas, and then reheats the purified exhaust gas and supplies it to the platinum-based catalyst device. Carbon monoxide can be oxidized into carbon dioxide and released into the atmosphere by the oxidation catalytic action of a platinum-based catalyst or a palladium-based catalyst.

  The reheating temperature is preferably in the range of 170 ° C. to 230 ° C. (Claims 2 and 8). In the present invention, the platinum-based catalyst or the palladium-based catalyst is not easily poisoned by a halogen compound or the like discharged from the heating furnace, so that it is possible to oxidize carbon monoxide to carbon dioxide at a relatively low temperature.

  Preferably, the heating furnace is an indirect heating furnace using a high temperature gas as a heating medium, and the purified exhaust gas is reheated by a part of the high temperature gas that heated the heating furnace (claims 3 and 9). This is because if the thermal energy of the high-temperature gas is used, a new heat source for reheating is unnecessary.

  It is also preferable that the exhaust gas after purification is reheated by the exhaust gas before passing through the oil clubber (claims 4 and 10). Also in this case, a new heat source for reheating is unnecessary. Further, the temperature of the exhaust gas supplied to the oil scrubber can be lowered by heat exchange.

  It is also preferable that an activated carbon adsorption device is installed downstream of the platinum-based catalyst device or the palladium-based catalyst device, and the exhaust gas that has passed through the platinum catalyst device or the palladium catalyst device is subjected to an adsorption treatment (claims 5 and 11). This is because chlorine gas, organic compounds, etc. remaining in the exhaust gas can be adsorbed and removed by the activated carbon adsorption device.

  It is preferable that the waste is soil or sludge. This is because when the waste itself is organic, it is not appropriate to reduce and heat the waste.

  According to the heat treatment method and heat treatment apparatus of the present invention, the carbon monoxide discharged from the reduction heating furnace, which could not be effectively processed by the conventional heat treatment method and heat treatment apparatus, can be stably stabilized for a long time. It can be oxidized to carbon dioxide with energy saving. Moreover, the amount of exhaust gas can also be suppressed.

  Embodiments of the present invention will be described below with reference to the drawings as appropriate. The present invention is not limited to these.

(Embodiment 1)
An example of the basic configuration of the waste heat treatment apparatus of the present invention is shown in FIG. In the waste heat treatment apparatus shown in FIG. 1, first, a treated material such as soil or sludge contaminated with an organic halogen compound is introduced into the heating furnace 1 from the treated material inlet 16. In this case, the treated product is preferably dried as a pretreatment. It is also preferable to reduce the particle size by appropriate pulverization.

  First, when the heating furnace 1 is an indirect heating type, the inside of the heating furnace 1 is heated to 400 ° C. to 600 ° C., preferably 450 ° C. to 550 ° C. through a high-temperature gas from a heating medium supply device (not shown). At the same time, the oil scrubber 5 is operated and the blower 6 is operated. Further, the nitrogen gas generator 13 is operated to supply nitrogen to the heating furnace 1 from the path A. The air in the heating furnace 1 is discharged out of the system through the paths B to E and the activated carbon adsorption device 7. Thus, the air inside the heating furnace 1 is replaced with nitrogen and exposed to a low oxygen atmosphere (specifically, an oxygen concentration of 0.5 vol% or more and 5 vol% or less).

  As the nitrogen gas generator 13, a nitrogen gas cylinder or the like can be used in addition to the PSA type nitrogen gas generator. Moreover, although argon gas etc. may be used as an inert gas, it is preferable to use nitrogen gas when cost is considered.

  When the heating furnace 1 is sufficiently heated, the object to be processed is put into the heating furnace 1 from the processing object inlet 16. The object to be processed put into the heating furnace 1 moves in the heating furnace while being heated. With the heating, the organic halogen compound and other organic substances are thermally decomposed to generate a halogen gas such as chlorine gas, a halogen compound such as hydrochloric acid, and a gas such as carbon monoxide and carbon dioxide. Further, air and water vapor are also released from the processed product itself.

  The gas generated in the heating furnace is discharged from the exhaust gas outlet 3 to the path B. The paths B to D are sucked by the blower 6. The exhaust gas is supplied to the bag filter 4 from the path B, and solid fine particles and the like in the exhaust gas are removed. Thereafter, the exhaust gas is supplied to the oil scrubber 5 via a path C. A cyclone dust collector may be installed in front of the bag filter 4.

  When the organic halide contained in the object to be processed is PCB, the bag filter 4 is preferably a high-temperature bag filter (use temperature is about 180 ° C. to 300 ° C.). When the organic halide contained in the object to be treated is dioxin, the bag filter 4 is preferably a normal bag filter (use temperature is about room temperature to 200 ° C., preferably room temperature to 130 ° C. or less). In addition, when dioxin is contained in the object to be treated and oxygen is present in the exhaust gas, if a high-temperature bag filter is used, dioxin may be re-synthesized.

In the oil scrubber 5, when the cleaning oil and the exhaust gas come into contact with each other, the organic gas, the organic halogen compound, hydrogen chloride gas generated by the decomposition reaction in the heating furnace, SO _{X, and the} like are removed by the cleaning oil. . At the same time, the temperature of the exhaust gas also decreases, and a part of the water vapor is mixed into the cleaning oil as moisture. The water (including hydrogen chloride) mixed in the cleaning oil is separated by the oil / water separator 8 and rendered harmless, and then discharged out of the system. The oil scrubber 5 is preferably a sprayed oil scrubber or an aeration-in-oil oil scrubber, and more preferably includes a cooling device that cools the cleaning oil to 50 ° C. or lower.

  The cleaning oil from which the water has been separated is collected into the organic halogen compound decomposition apparatus 9. Here, the sodium dispersion is added to the cleaning oil, and the organic halogen compound dissolved in the cleaning oil is decomposed.

  Next, the cleaning oil is supplied to a neutralizer 10 that neutralizes the sodium dispersion remaining in the cleaning oil with water. Thereafter, the waste alkaline water is supplied to the waste water separator 11 that separates the waste alkaline water from the neutralized cleaning oil, and the waste alkaline water is rendered harmless and discharged out of the system. Then, the cleaning oil is circulated to the oil scrubber 5.

  Note that the oil / water separator 8, the organic halogen compound decomposer 9, the neutralizer 10, and the wastewater separator 11 are all arbitrarily configured.

  The cleaning oil used in the oil scrubber 5 is not particularly limited as long as it is a hydrocarbon oil, but preferably has a boiling point lower than that of the organic halogen compound in the exhaust gas. For example, it is preferable to use a hydrocarbon oil having 8 to 15 carbon atoms, preferably 10 to 12 carbon atoms, and particularly preferred is a normal paraffin-based hydrocarbon oil that easily dissolves an organic halogen compound.

  The exhaust gas cleaned by the oil scrubber 5 is supplied to the path E via the path D and the blower 6, subjected to an adsorption treatment by the activated carbon adsorption device 7, and then discharged outside the system. In the activated carbon adsorption device 7, trace amounts of inorganic halogen compounds such as hydrochloric acid, nitrogen oxides, and the like, which were not removed by the oil scrubber 5, are removed.

  The exhaust gas purified by the activated carbon adsorption device 7 is supplied to the platinum-based catalyst device 18 via the path F. At this time, the exhaust gas flowing through the path F is heated by the reheating device 17 to a temperature of preferably 150 ° C. or higher and 250 ° C. or lower, more preferably 170 ° C. or higher and 230 ° C. or lower.

  In the platinum-based catalyst device 18, carbon monoxide that cannot be removed by the activated carbon adsorption device 7 reacts with oxygen by the catalytic action of the platinum-based catalyst and is oxidized to carbon dioxide. The exhaust gas after the catalyst treatment is released into the atmosphere from the exhaust port 19.

  At this time, the exhaust gas in the platinum-based catalyst device 18 has a relatively low temperature of 150 ° C. or more and 250 ° C. or less, preferably 170 ° C. or more and 230 ° C. or less, so that nitrogen oxides are not generated from nitrogen gas. There is also no risk of dioxins being re-synthesized. In addition, since the halogen compound such as hydrogen chloride, oil mist, and the like are removed by the exhaust gas cleaning device including the high-temperature bag filter 4 and the oil scrubber 5, and the activated carbon adsorption device 7, poisoning of the platinum-based catalyst is prevented, It is possible to catalyze the oxidation of carbon monoxide stably for a long period of time and at a low cost.

(Embodiment 2)
In the first embodiment, the exhaust gas supplied to the path E through the oil scrubber 5 and the blower 6 is adsorbed and removed by the activated carbon adsorbing device 7 with a small amount of halogen compound, and then supplied to the platinum-based catalyst device 18. The However, when the concentration of a gas such as a halogen compound or oil mist or a mist-like substance in the exhaust gas supplied to the path E is low, as shown in FIG. After the carbon monoxide is oxidized to carbon dioxide, exhaust gas may be supplied to the activated carbon adsorption device 7 to perform adsorption removal.

  In addition, since the exhaust gas discharged | emitted from the platinum-type catalyst apparatus 18 is about 150 degreeC temperature, it is preferable to install the cooling device 21 between the platinum-type catalyst apparatus 18 and the activated carbon adsorption apparatus 7. FIG. The cooling device 21 only needs to be able to cool the exhaust gas discharged from the platinum-based catalyst device 18 to about 70 ° C. or less, and may be air-cooled or water-cooled. Moreover, the heat exchanger for exchanging heat with the nitrogen gas supplied to the heating furnace A from the nitrogen gas generator 13 may be used.

(Embodiment 3)
Another example of the basic configuration of the waste heat treatment apparatus of the present invention is shown in FIG. In the waste heat treatment apparatus shown in FIG. 3, a heat exchanger 20 is installed in the path F instead of the reheating apparatus 17, and a part of the high-temperature gas that heated the heating furnace 1 is connected to the heat exchanger 20. Has been. The rest is the same as the waste heat treatment apparatus shown in FIG.

  In the waste heat treatment apparatus shown in FIG. 3, heat exchange is performed between the high-temperature gas and the exhaust gas in the path F. Therefore, a dedicated heat source is not necessary for reheating the exhaust gas in the path F. The hot gas that has passed through the heat exchanger 20 is recovered to the heat medium supply device. In this case as well, the exhaust gas flowing through the path F is preferably heated to a temperature of 150 ° C. or higher and 250 ° C. or lower, more preferably 170 ° C. or higher and 230 ° C. or lower.

  When the concentration of a gas such as a halogen compound or oil mist or mist-like substance in the exhaust gas supplied to the path E is low, the exhaust gas is exhausted by the reheating device 17 and the platinum-based catalyst device 18 as in the second embodiment. After oxidizing the carbon monoxide in the inside into carbon dioxide, exhaust gas may be supplied to the activated carbon adsorption device 7 to perform adsorption removal.

(Embodiment 4)
FIG. 4 shows still another example of the basic configuration of the waste heat treatment apparatus of the present invention. In the waste heat treatment apparatus shown in FIG. 4, the exhaust gas that has passed through the high-temperature bag filter 4 is supplied to the heat exchanger 20 via the path C1, and then supplied to the oil scrubber 5 via the path C2. . The rest is the same as the waste heat treatment apparatus shown in FIG.

  In the waste heat treatment apparatus shown in FIG. 4, heat exchange is performed between the exhaust gas at about 250 to 400 ° C. and the exhaust gas in the path F. Therefore, a dedicated heat source is not required for reheating the exhaust gas in the path F. It is. In this case as well, it is preferable to heat the exhaust gas flowing through the path F to a temperature of 170 ° C. or higher and 230 ° C. or lower.

  In addition, since the waste heat processing apparatus shown in FIG. 4 also has the effect of cooling the exhaust gas supplied to the oil scrubber 5, there is an advantage that the cooling efficiency of the oil scrubber 5 is also improved.

  When the concentration of a gas such as a halogen compound, oil mist, or mist-like substance in the exhaust gas supplied to the path E is low, the reheating device 17 and the platinum-based catalyst device 18 may After oxidizing carbon monoxide to carbon dioxide, exhaust gas may be supplied to the activated carbon adsorption device 7 to perform adsorption removal.

  In the first, third, and fourth embodiments, the exhaust gas after passing through the activated carbon adsorption device 7 is all supplied to the reheating device 17, but is not limited to this, and the route E or the route F (activated carbon adsorption) It is also preferable that most of the exhaust gas flowing between the apparatus 7 and the reheating apparatus 17 is returned to the heating furnace 1 to recirculate the exhaust gas. With such a configuration, emission of exhaust gas to the outside of the system can be reduced, and the amount of exhaust gas heated by the reheating device can be reduced, so that energy required for reheating can be reduced.

  Furthermore, when exhaust gas is circulated, the supply location of the nitrogen gas is not limited to the position of the nitrogen gas supply generator 13 shown in FIGS. 1 to 4, and is after the oil scrubber 5 and before the activated carbon adsorption device 7. It is preferable to supply nitrogen gas. Since the exhaust gas at the outlet of the oil scrubber 5 is saturated with water vapor and oil, when the temperature of the exhaust gas decreases, liquid condensed with water vapor and oil adheres inside the duct and equipment, which causes corrosion and clogging.

  Moreover, in the activated carbon filling apparatus 7 in the latter stage, if the droplets adhere to the activated carbon surface and cover the surface, the activated carbon adsorption performance may be deteriorated. Therefore, by mixing the dried nitrogen gas in the subsequent stage of the oil scrubber 5, the humidity of the exhaust gas can be adjusted and stable operation can be performed.

  In the first to fourth embodiments, carbon monoxide is oxidized to carbon dioxide in the platinum-based catalyst device 18, but oxygen contained in the object to be processed and the object to be processed are supplied into the heating furnace. Since carbon monoxide is oxidized to carbon dioxide using a small amount of oxygen mixed in the process, carbon monoxide can be sufficiently oxidized without supplying oxygen into the exhaust gas at the front stage of the platinum-based catalyst device 18. Can do.

  The treatment method and treatment apparatus for heat-treating waste containing an organic halogen compound according to the present invention is useful in the environmental conservation field and the waste treatment field for the purpose of detoxifying soil or sludge contaminated with an organic halogen compound. It is.

1 is a configuration diagram illustrating an example of a waste heat treatment apparatus according to a first embodiment. It is a block diagram which shows an example of the waste heat processing apparatus of Embodiment 2. FIG. 6 is a configuration diagram illustrating an example of a waste heat treatment apparatus according to Embodiment 3. FIG. FIG. 10 is a configuration diagram illustrating an example of a waste heat treatment apparatus according to a fourth embodiment.

Explanation of symbols

1: Heating furnace 2: Indirect heating device 3: Exhaust gas outlet 4: Bag filter 5: Oil scrubber 6: Blower 7: Activated carbon adsorption device 8: Oil-water separation device 9: Organohalogen compound decomposition device 10: Neutralization device 11: Wastewater separation Devices 12, 14: Valve 13: Nitrogen gas generator 15: Rapid cooling device 16: Processed material input port 17: Reheating device 18: Platinum-based catalyst device 19: Exhaust port 20: Heat exchanger 21: Cooling devices AG C1, C2: Route

Claims (12)

A heating furnace that heat-treats waste containing an organic halogen compound in a low-oxygen atmosphere;
An inert gas supply device for supplying an inert gas to the heating furnace;
An exhaust gas cleaning device comprising a bag filter and an oil scrubber for purifying the exhaust gas of the heating furnace;
A platinum-based catalyst device or a palladium-based catalyst device;
A waste heat treatment method using a waste heat treatment apparatus comprising:
The waste heat treatment method characterized in that carbon dioxide in the exhaust gas after purification is oxidized to carbon dioxide by reheating the exhaust gas after purification in the exhaust gas cleaning device and passing through the platinum catalyst device. .   The waste heat treatment method according to claim 1, wherein the reheating temperature is within a range of 170 ° C. or higher and 230 ° C. or lower.   The waste heating according to claim 1 or 2, wherein the heating furnace is an indirect heating furnace using a high-temperature gas as a heating medium, and the purified exhaust gas is reheated by a part of the high-temperature gas heating the heating furnace. Processing method.   The waste heat treatment method according to claim 1 or 2, wherein the exhaust gas after purification is reheated by the exhaust gas before passing through an oil crumb rubber.   The waste heat treatment method according to any one of claims 1 to 4, wherein the exhaust gas that has passed through the platinum-based catalyst device is subjected to an adsorption treatment by an activated carbon adsorption device.   The waste heat treatment method according to any one of claims 1 to 5, wherein the waste is soil or sludge. A heating furnace that heat-treats waste containing an organic halogen compound in a low-oxygen atmosphere;
An inert gas supply device for supplying an inert gas to the heating furnace;
An exhaust gas cleaning device comprising a bag filter and an oil scrubber for purifying the exhaust gas of the heating furnace;
A platinum-based catalyst device or a palladium-based catalyst device;
A waste heat treatment apparatus comprising:
The waste heat treatment apparatus characterized in that carbon dioxide in the exhaust gas after purification is oxidized to carbon dioxide by reheating the exhaust gas after purification in the exhaust gas cleaning device and passing through the platinum catalyst device. .   The waste heat treatment apparatus according to claim 7, wherein the reheating temperature is within a range of 170 ° C. or higher and 230 ° C. or lower.   The waste heat treatment apparatus according to claim 7 or 8, wherein the heating furnace is an indirect heating furnace using a high-temperature gas as a heating medium, and the purified exhaust gas is reheated with the high-temperature gas heated in the heating furnace. .   The waste heat treatment apparatus according to claim 7 or 8, wherein the exhaust gas after purification is reheated by the exhaust gas before passing through an oil scrubber.   The disposal according to any one of claims 7 to 10, wherein an activated carbon adsorption device is installed downstream of the platinum catalyst device or the palladium catalyst device, and the exhaust gas that has passed through the platinum catalyst device or the palladium catalyst device is adsorbed. Material heat treatment equipment.   The waste heat treatment apparatus according to any one of claims 7 to 11, wherein the waste is soil or sludge.

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