JP2005113081A - Method and apparatus for waste disposal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and apparatus for obtaining a carbonized material containing less halide easily and exactly from a halogen-containing waste by dehalogenating carbonization of a waste containing a halogen-containing material. <P>SOLUTION: The method comprises a process to heat a waste containing a halogen-containing material in a carbonization furnace of a reducing atmosphere and to volatilize the halide to get a primary carbonized material, and a next process to heat the primary carbonized material in a dehalogenation furnace of an atmosphere of a high temperature steam to volatilize the remaining halide to get a secondary carbonization product. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a waste treatment method and a waste treatment apparatus, and more particularly, to a waste treatment method and a waste treatment apparatus for dehalogenating a waste containing a halogen-containing material into a carbide.

In recent years, a large amount of plastic mixtures containing chlorine-containing plastics such as polyvinyl chloride and polyvinylidene chloride and wastes containing inorganic components have been discharged, and the amount of waste is increasing.
And most of such waste is currently incinerated or landfilled.

When incinerated, harmful substances such as hydrogen chloride and dioxins generated during incineration may be released directly into the atmosphere.
In addition, when landfilled, the active ingredient in the waste is not used, resulting in a loss of resources.
Thus, it has been proposed to recover the active ingredients in the waste by thermally decomposing such waste.

Conventionally, as a method for recovering active components therein by thermally decomposing waste, for example, a method for producing a dechlorinated fuel disclosed in Japanese Patent Application Laid-Open No. 2000-15635 is known.
In this method for producing a dechlorinated fuel, the slurry is dechlorinated, and the slurry-like fuel, which is a dechlorinated fuel, is obtained by removing excess water from the slurry after washing in a washing tank as waste water. It is done.

Also, as disclosed in Japanese Patent Laid-Open No. 10-101841, there is known a method of separating generated hydrogen chloride with high efficiency by pretreatment dechlorination in the treatment of waste containing chlorine.
JP 2000-15635 A Japanese Patent Laid-Open No. 10-101841

However, in the above-described method for producing a dechlorinated fuel disclosed in Japanese Patent Laid-Open No. 2000-15635, inorganic salts are removed by a water washing process in order to reuse carbide, and complicated equipment necessary for water washing is required. Further, there is a problem that it is necessary to dry the slurry-like carbide taken out after washing with water.
The present invention has been made to solve such a conventional problem, and is a waste processing method and a waste processing apparatus capable of easily and reliably obtaining a carbide with less halide from a waste containing a halogen-containing material. The purpose is to provide.

The waste treatment method according to claim 1 includes a step of heating a waste containing a halogen-containing material in a carbonization furnace in a reduced state atmosphere to volatilize the halide to form a primary carbide, and the primary carbide is heated to a high temperature. And heating in a dehalogenation furnace in a water vapor atmosphere to volatilize the halide remaining in the primary carbide to form a secondary carbide.
The waste treatment method according to claim 2 is the waste treatment method according to claim 1, wherein the heating temperature of the waste in the carbonization furnace is an optimum temperature necessary for carbonization of the waste, The heating temperature of the primary carbide in the halogen furnace is an optimum temperature for inhibiting the formation of inorganic halides.

The waste treatment method according to claim 3 is the waste treatment method according to claim 2, wherein an optimum temperature required for carbonization of the waste is approximately 450 ° C., which inhibits the formation of the inorganic halide. The optimum temperature is about 600 ° C.
The waste treatment method according to claim 4 is the waste treatment method according to any one of claims 1 to 3, wherein dehalogenated water vapor that has passed through the dehalogenation furnace is generated in the carbonization furnace. It is characterized in that it is guided to a combustible gas combustion furnace for burning combustible gas.

The waste treatment method according to claim 5 is the waste treatment method according to any one of claims 1 to 4, wherein the carbonization furnace heats the waste while moving the waste from above to below. It is a vertical furnace, and the dehalogenation furnace is a vertical furnace that heats the primary carbide while moving from above to below.
The waste treatment method according to claim 6 is the waste treatment method according to any one of claims 1 to 5, wherein the dehalogenation furnace has a heating means for heating the primary carbide and water vapor. It is characterized by.

A waste treatment apparatus according to claim 7, wherein a waste containing halogen-containing material is heated in a reduced state atmosphere to volatilize the halide to form a primary carbide, and the primary carbide is converted into a high-temperature steam atmosphere. And a dehalogenation furnace that volatilizes the halide remaining in the primary carbide to form a secondary carbide.
The waste treatment apparatus according to claim 8 is the waste treatment apparatus according to claim 7, further comprising a combustible gas combustion furnace for combusting a combustible gas generated in the carbonization furnace, wherein the dehalogenation furnace is provided in the combustible gas combustion furnace. The dehalogenated water vapor that has passed through the inside is guided.

The waste treatment apparatus according to claim 9 is the waste treatment apparatus according to claim 7 or claim 8, wherein the carbonization furnace is a vertical furnace that heats the waste while moving the waste from above to below, The dehalogenation furnace is a vertical furnace that heats the primary carbide while moving from above to below.
The waste treatment apparatus according to claim 10 is the waste treatment apparatus according to any one of claims 7 to 9, wherein the dehalogenation furnace has a heating means for heating the primary carbide and water vapor. It is characterized by.

The waste treatment apparatus according to claim 11 is the waste treatment apparatus according to any one of claims 7 to 10, wherein the quantitative discharger for quantitatively discharging the primary carbide in the carbonization furnace, and the quantitative discharge It has a storage means for storing the primary carbide from the machine, and a fixed-quantity feeder for supplying the primary carbide in the storage means to the dehalogenation furnace in a fixed amount.
(Function)
In the waste treatment method according to claim 1, a primary carbide having a relatively small amount of halide can be obtained by heating waste containing a halogen-containing material in a carbonization furnace in a reduced state atmosphere to volatilize the halide. .

That is, an inorganic halide is generated in the carbonization furnace, and this inorganic halide remains as a halide in the primary carbide.
Therefore, the obtained primary carbide is heated in a dehalogenation furnace in a high-temperature steam atmosphere to volatilize the halide remaining in the primary carbide, thereby obtaining a secondary carbide with very little halide. .

And since the capacity | capacitance of the obtained primary carbide has decreased significantly compared with the capacity | capacitance of a waste, the capacity | capacitance of the dehalogenation furnace which dehalogenates a primary carbide can be made small, Even if the amount of water vapor to be filled is small, a high-temperature water vapor atmosphere can be reliably formed.
In the waste treatment method according to the second aspect, the heating temperature of the waste in the carbonization furnace is set to an optimum temperature necessary for carbonization of the waste.

Further, the heating temperature of the primary carbide in the dehalogenation furnace is set to an optimum temperature for inhibiting the formation of inorganic halides.
In the waste treatment method according to the third aspect, the optimum temperature necessary for carbonizing the waste is about 450 ° C., and the optimum temperature for inhibiting the formation of inorganic halide is about 600 ° C.
In the waste treatment method according to the fourth aspect, the dehalogenated water vapor that has passed through the dehalogenation furnace is led to a combustible gas combustion furnace that burns the combustible gas generated in the carbonization furnace.

In addition, since the amount of water vapor to be filled in the dehalogenation furnace is small, there is a relatively large amount of high calorie combustible gas that can be self-combusted in the combustible gas combustion furnace, and a small amount of water vapor does not inhibit combustion, and thus dehalogenation. Hazardous substances in water vapor are burned.
In the waste treatment method of claim 5, the carbonization furnace is a vertical furnace that heats the waste while moving it from above to below, and the dehalogenation furnace moves the primary carbide from above to below. It is a vertical furnace that heats while heating.

In the waste treatment method according to the sixth aspect, heating means for heating the primary carbide and the steam is disposed in the dehalogenation furnace, and relatively low-pressure steam is supplied to the dehalogenation furnace.
In the waste treatment apparatus of claim 7, first, waste containing halogen-containing material is heated in a carbonization furnace in a reduced state atmosphere to volatilize the halide, whereby primary carbide with relatively little halide is obtained. can get.

Next, the obtained primary carbide is heated in a dehalogenation furnace in a high-temperature steam atmosphere to volatilize the halide remaining in the primary carbide, thereby obtaining a secondary carbide with very little halide. It is done.
And since the capacity | capacitance of the obtained primary carbide has decreased significantly compared with the capacity | capacitance of a waste, the capacity | capacitance of the dehalogenation furnace which dehalogenates a primary carbide can be made small, Even if the amount of water vapor to be filled is small, a high-temperature water vapor atmosphere can be formed.

In the waste treatment apparatus according to the eighth aspect, the dehalogenated water vapor that has passed through the dehalogenation furnace is guided to the combustible gas combustion furnace that burns the combustible gas generated in the carbonization furnace.
In addition, since the amount of water vapor to be filled in the dehalogenation furnace is small, there is a relatively large amount of high calorie combustible gas that can be self-combusted in the combustible gas combustion furnace, and a small amount of water vapor does not inhibit combustion, and thus dehalogenation. Hazardous substances in water vapor are burned.

In the waste treatment apparatus according to claim 9, the carbonization furnace is a vertical furnace that heats the waste while moving from above to below, and the dehalogenation furnace moves the primary carbide from above to below. It is a vertical furnace that heats while heating.
In the waste treatment apparatus of claim 10, since the heating means for heating the primary carbide and steam is disposed in the dehalogenation furnace, there is no hindrance to heating and maintaining the atmosphere even if the steam filling the furnace is low pressure, A relatively low-pressure steam is supplied to the dehalogenation furnace.

  In the waste treatment apparatus of claim 11, the primary carbide in the carbonization furnace is transported to the storage means by the quantitative discharger, and the primary carbide stored in the storage means is quantitatively supplied to the dehalogenation furnace by the quantitative supply machine. Is done.

  In the waste treatment method according to claim 1, first, waste containing a halogen-containing material is heated in a carbonization furnace in a reduced state atmosphere to obtain a primary carbide having a relatively small amount of halide, and thereafter obtained. Since the primary carbide is heated in a dehalogenation furnace in a high-temperature steam atmosphere and the halide remaining in the primary carbide is volatilized, a secondary carbide with very little halide is obtained. From waste containing inclusions, carbides with less halide can be obtained easily and reliably.

Further, since the capacity of the obtained primary carbide is greatly reduced compared with the capacity of the waste, the capacity of the dehalogenation furnace for dehalogenating the primary carbide can be reduced. Even if the amount of water vapor to be filled is small, a high-temperature water vapor atmosphere can be reliably formed.
In the waste treatment method according to claim 2, the heating temperature of the waste in the carbonization furnace is set to an optimum temperature necessary for carbonization of the waste, and the heating temperature of the primary carbide in the dehalogenation furnace is set to be equal to that of the inorganic halide. Since the temperature is optimal for inhibiting the production, the halogen content of the secondary carbide becomes very small. For example, the secondary carbide can be used as a solid fuel as it is.

In the waste treatment method of claim 3, the optimum temperature necessary for carbonization of the waste is about 450 ° C., and the optimum temperature for inhibiting the formation of inorganic halide is about 600 ° C. The halogen content of the secondary carbide can be reduced most effectively.
In the waste treatment method according to claim 4, the dehalogenated water vapor that has passed through the dehalogenation furnace is guided to the combustible gas combustion furnace that burns the combustible gas generated in the carbonization furnace. This flammable gas can burn harmful substances in dehalogenated water vapor.

In the waste treatment method of claim 5, since the carbonization furnace and the dehalogenation furnace are vertical furnaces, it becomes possible to increase the filling rate of waste and primary carbides, and inertness for forming a reduced state atmosphere The amount of gas and dehalogenated water vapor can be reduced.
In the waste treatment method according to the sixth aspect, since the heating means for heating the primary carbide and the steam is provided in the dehalogenation furnace, the pressure of the steam supplied to the dehalogenation furnace can be made relatively low.

In the waste treatment apparatus according to the seventh aspect, it is possible to easily and surely obtain a carbide having a small amount of halide from the waste containing the halogen-containing material.
Moreover, since the volume of the obtained primary carbide is significantly reduced compared with the volume of waste, a high-temperature steam atmosphere can be reliably formed with a small amount of steam.
In the waste treatment apparatus according to the eighth aspect, harmful substances in the dehalogenated water vapor can be combusted by the high calorie combustible gas capable of self-combustion.

In the waste treatment apparatus of claim 9, since the carbonization furnace and the dehalogenation furnace are vertical furnaces, it becomes possible to increase the filling rate of waste and primary carbide, and inertness for forming a reduced state atmosphere The amount of gas and dehalogenated water vapor can be reduced.
In the waste treatment apparatus according to the tenth aspect, the pressure of the water vapor supplied to the dehalogenation furnace can be made relatively low.

  In the waste treatment apparatus of claim 11, the primary carbide in the carbonization furnace is transported to the storage means by the quantitative discharger, and the primary carbide stored in the storage means is quantitatively supplied to the dehalogenation furnace by the quantitative supply machine. As a result, continuous operation can be performed easily and reliably.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an embodiment of the waste treatment apparatus of the present invention.
The waste treatment apparatus of this embodiment is used for producing a fuel made of carbide by dehalogenating chloride from waste containing chlorine.
In the figure, reference numeral 11 denotes a crusher that crushes waste containing chlorine-containing material.

The waste crushed by the crusher 11 is pulverized by the finer 13, stored in the storage tank 15, and guided to the upper portion of the carbonization furnace 19 by the quantitative supply unit 17.
On the outer periphery of the carbonization furnace 19, a heating means 21 made of a heater or the like is disposed.
An inert gas composed of nitrogen (N ₂ ) is supplied to the lower portion of the carbonization furnace 19 so that air from the outside is prevented from entering the carbonization furnace 19 so that oxygen is reduced and a reduced state is achieved. It is kept.

The combustible gas generated in the carbonization furnace 19 is combusted in the combustible gas combustion furnace 23, then cooled in the exhaust gas cooling device 25 to facilitate subsequent processing, passes through the exhaust gas processing device 27, the exhaust fan 29, and the exhaust tower. 31 is discharged into the atmosphere as exhaust gas.
On the other hand, the waste carbonized in the carbonization furnace 19 is sent to the storage tank 35 from the fixed discharge machine 33 as primary carbide and stored.

The primary carbide in the storage tank 35 is supplied to the upper part of a carbide demineralization furnace 39 which is a dehalogenation furnace by a quantitative supply machine 37.
On the outer periphery of the carbide demineralization furnace 39, a heating means 41 comprising a heater or the like is disposed.
High temperature steam is supplied to the lower portion of the carbide desalting furnace 39.
The primary carbide desalted in the carbide desalting furnace 39 is sent as a secondary carbide from the quantitative discharger 43 to the cooler 45, cooled, and stored in the carbide storage tank 47.

Hereinafter, a waste processing method using the above-described waste processing apparatus will be described in detail.
In this embodiment, an example will be described in which the waste material remaining after being formed from the chloroprene plate is processed by the above-described waste processing apparatus to produce a fuel made of carbide.
In this embodiment, first, waste containing chlorine-containing material made of chloroprene sheet waste is crushed to a predetermined size by the crusher 11.

The waste crushed by the crusher 11 is pulverized by the finer 13, stored in the storage tank 15, and guided to the upper portion of the carbonization furnace 19 by the quantitative feeder 17.
In addition, it is desirable that the particle size of the waste after being pulverized by the pulverizer 13 is 2 mm or less from the viewpoint of improving thermal decomposition efficiency.
The waste supplied to the upper part of the carbonization furnace 19 is carbonized in the carbonization furnace 19 to be primary carbide.

The inside of the carbonization furnace 19 is heated by the heating means 21, and is set to a temperature of 450 ° C. in this embodiment.
Moreover, the inside of the carbonization furnace 19 is made into a reduced state atmosphere by an inert gas made of nitrogen.
The waste thrown into the carbonization furnace 19 is heated while descending the carbonization furnace 19 from the upper part toward the lower part.

By this heating, combustible gas is generated from the waste, and the chloride is volatilized from the waste, so that a primary carbide with less chloride is obtained.
However, waste contains, for example, magnesium, and most of the chlorides volatilize, but some of the chlorides react with HCl (hydrogen chloride) generated during thermal decomposition and are not easily volatilized ( Metal chloride such as magnesium chloride) and remain in the primary carbide.

The primary carbide carbonized in the carbonization furnace 19 is sent from the fixed discharge machine 33 to the storage tank 35 and stored.
The primary carbide in the storage tank 35 is supplied to the upper part of the carbide demineralization furnace 39 by a fixed amount feeder 37.
The inside of the carbide demineralization furnace 39 is heated by the heating means 41, and in this embodiment, the temperature is 600 ° C.

Further, the inside of the carbide demineralization furnace 39 is filled with low-pressure steam supplied from the lower part of the carbide demineralization furnace 39 and is heated by the heating means 41 to form a high-temperature steam atmosphere.
The primary carbide charged in the carbide demineralization furnace 39 is heated while descending from the upper part toward the lower part in the carbide demineralization furnace 39.
By this heating, the chloride remaining in the primary carbide volatilizes, and a secondary carbide with very little chloride is obtained.

That is, the metal chloride remaining in the primary carbide, for example, magnesium chloride, is decomposed by the following reaction in the presence of water vapor to produce hydrogen chloride HCl.
MgCl ₂ + H ₂ O → 2HCl + MgO
In this decomposition reaction, the higher the water vapor concentration, the higher the decomposition rate of chlorine.
In this embodiment, the volume of the primary carbide thus obtained is greatly reduced as compared with the volume of waste because the low-boiling substances are volatilized from the waste in the carbonization furnace 19 and the solid content is reduced. Therefore, the capacity of the carbide desalting furnace 39 for desalting the primary carbide can be reduced, and a high-temperature steam atmosphere can be formed even if the amount of steam to be filled in the desalting furnace is small.

The primary carbide desalted in the carbide desalting furnace 39 is sent as a secondary carbide from the quantitative discharger 43 to the cooler 45, cooled, and stored in the carbide storage tank 47.
The amount of chlorine contained in this secondary carbide is 0.5% by weight or less, and even if it is burned in the atmosphere, high concentrations of dioxins and the like are not generated, and there is no need for treatment of exhaust gas with dioxins. For example, it can be used as it is as a fuel for drying cement.

On the other hand, hydrogen chloride and the like generated in the carbide demineralization furnace 39 are sent to the combustible gas combustion furnace 23 as carbide demineralized water vapor.
And since the desalination furnace 39 has a small capacity, the amount of water vapor containing this dehalogenated material is small, and in the combustible gas combustion furnace 23, the amount of high calorie combustible gas that can be self-combusted is large. The water vapor does not inhibit the combustion, so the harmful substances in the dehalogenated water vapor are burned.

The gas burned in the combustible gas combustion furnace 23 is cooled by the exhaust gas cooling device 25, passes through the exhaust gas processing device 27 and the exhaust fan 29, and is released into the atmosphere as exhaust gas from the exhaust tower 31.
In the waste treatment method and the waste treatment apparatus described above, waste containing chlorine-containing material is heated in a carbonization furnace 19 in a reduced state atmosphere to obtain a primary carbide having relatively little chloride, and thereafter obtained. The obtained primary carbide is heated in a carbide desalting furnace 39 in a high-temperature steam atmosphere so that chloride remaining in the primary carbide is volatilized to obtain a secondary carbide with very little chloride. Therefore, it is possible to easily and surely obtain carbides with less chloride from waste containing chlorine.

Further, since the capacity of the obtained primary carbide is greatly reduced compared with the capacity of the waste, the capacity of the carbide demineralization furnace 39 for demineralizing the primary carbide can be reduced, and the demineralization furnace thereof. Even if the amount of water vapor to be filled is small, a high-temperature water vapor atmosphere can be reliably formed.
Further, in the waste treatment method described above, the heating temperature of the waste in the carbonization furnace 19 is set to an optimum temperature of 450 ° C. necessary for carbonization of the waste, and the heating temperature of the primary carbide in the carbide demineralization furnace 39 is set. Since the optimum temperature for inhibiting the formation of metal chloride is 600 ° C., the chlorine content of the secondary carbide is very low. For example, the secondary carbide can be used as a solid fuel as it is.

That is, by setting the heating temperature of the waste in the carbonization furnace 19 to 450 ° C., it becomes possible to thermally decompose the waste most efficiently and at the same time to effectively volatilize chloride in the waste. .
Further, by setting the heating temperature of the primary carbide in the carbide demineralization furnace 39 to 600 ° C., it is possible to volatilize the hydrogen chloride generated by efficiently decomposing the metal chloride, and at the same time, the metal Chloride formation can be effectively inhibited.

FIG. 2 shows the amount of chlorine contained in 1 g of carbide in mg when the waste material remaining after being molded from the chloroprene rubber plate is crushed and heated for 1 hour to conduct a desalting treatment experiment.
The amount of chlorine contained in the carbide is determined as the sum of water-soluble chlorine obtained by washing the carbide with water and released chlorine generated during combustion of the carbide (residue).
From FIG. 2, when desalting is performed in a steam atmosphere (H ₂ O) at 600 ° C., the amount of chlorine contained in the carbide is 0.3 mg + 1.0 mg = 1.3 mg per gram, and 0.13 weight of the carbide. It can be seen that it is sufficiently lower than 0.5% by weight required for direct use as a fuel.

Further, in the above-described waste treatment method and waste treatment apparatus, the carbide demineralized water vapor that has passed through the carbide demineralization furnace 39 is guided to the combustible gas combustion furnace 23 that burns the combustible gas generated in the carbonization furnace 19. Therefore, harmful substances in the carbide demineralized water vapor can be burned by the high calorie combustible gas capable of self-combustion.
In the waste treatment method and the waste treatment apparatus described above, since the carbonization furnace 19 and the carbide demineralization furnace 39 are vertical furnaces, it is possible to increase the filling rate of waste and carbide, and reduce the reduced state atmosphere. The amount of inert gas and carbide demineralized water vapor to form can be reduced.

Further, in the waste treatment method and the waste treatment apparatus described above, the heating means 41 for heating the carbide and steam is provided in the carbide demineralization furnace 39, so that the pressure of the steam supplied to the carbide demineralization furnace 39 is relatively high. Can be low pressure.
And in the waste disposal apparatus mentioned above, the primary carbide from the carbonization furnace 19 is conveyed to the storage tank 35 by the fixed discharge machine 33, and the primary carbide stored in the storage tank 35 is converted into the carbide by the fixed supply machine 37. Since the fixed amount is supplied to the desalination furnace 39, continuous operation can be performed easily and reliably.

In the above-described embodiment, the example in which the chloride is desalted from the chloroprene rubber waste material to produce the fuel made of carbide has been described, but the present invention is not limited to such an embodiment, and the chloride and It can be widely applied to the production of fuel from carbon waste products and product waste.
Further, in the above-described embodiment, the example in which the chloride is desalted from the waste containing the chlorine-containing material and the fuel made of the carbide is manufactured has been described, but the present invention is not limited to the embodiment. It can be widely applied to waste containing halogen-containing materials.

  Furthermore, although the example which manufactured the fuel which consists of a carbide | carbonized_material was demonstrated in embodiment mentioned above, this invention is not limited to this embodiment, The processing of the waste containing not only the manufacture of a fuel but a halogen containing material is carried out. Can be widely applied to.

It is a piping system diagram showing one embodiment of a waste disposal device of the present invention. It is explanatory drawing which shows the experimental result of a desalination process.

Explanation of symbols

19 Carbonization furnaces 21 and 41 Heating means 23 Combustible gas combustion furnace 33 Fixed discharge machine 35 Storage tank 37 Fixed supply machine 39 Carbide demineralization furnace (dehalogenation furnace)

Claims (11)

Heating the waste containing the halogen-containing material in a carbonization furnace in a reduced state atmosphere to volatilize the halide into primary carbide;
Heating the primary carbide in a dehalogenation furnace in a high-temperature steam atmosphere to volatilize the halide remaining in the primary carbide to form a secondary carbide;
A waste disposal method comprising: The waste treatment method according to claim 1,
The heating temperature of the waste in the carbonization furnace is an optimum temperature necessary for carbonization of the waste, and the heating temperature of the primary carbide in the dehalogenation furnace inhibits the formation of inorganic halides. A waste treatment method characterized in that the temperature is optimum. The waste treatment method according to claim 2,
The optimal temperature required for carbonization of the waste is approximately 450 ° C., and the optimal temperature for inhibiting the formation of the inorganic halide is approximately 600 ° C. The waste treatment method according to any one of claims 1 to 3,
A waste treatment method, wherein the dehalogenated water vapor that has passed through the dehalogenation furnace is led to a combustible gas combustion furnace that burns the combustible gas generated in the carbonization furnace. In the waste disposal method according to any one of claims 1 to 4,
The carbonization furnace is a vertical furnace that heats the waste while moving from above to below, and the dehalogenation furnace is a vertical furnace that heats while moving the primary carbide from above to below. A waste disposal method characterized by being. The waste disposal method according to any one of claims 1 to 5,
The said dehalogenation furnace has a heating means to heat the said primary carbide and water vapor | steam, The waste processing method characterized by the above-mentioned. A carbonization furnace that heats waste containing halogen-containing materials in a reduced state atmosphere to volatilize the halides into primary carbides;
A dehalogenation furnace in which the primary carbide is heated in a high-temperature steam atmosphere to volatilize a halide remaining in the primary carbide to form a secondary carbide;
A waste treatment apparatus comprising: The waste treatment apparatus according to claim 7,
A waste treatment apparatus comprising a combustible gas combustion furnace for combusting a combustible gas generated in the carbonization furnace, and introducing dehalogenated water vapor that has passed through the dehalogenation furnace to the combustible gas combustion furnace. The waste disposal apparatus according to claim 7 or claim 8,
The carbonization furnace is a vertical furnace that heats the waste while moving from above to below, and the dehalogenation furnace is a vertical furnace that heats while moving the primary carbide from above to below. There is a waste treatment apparatus. The waste disposal apparatus according to any one of claims 7 to 9,
The waste treatment apparatus, wherein the dehalogenation furnace has heating means for heating the primary carbide and water vapor. The waste disposal apparatus according to any one of claims 7 to 10,
A quantitative discharger for quantitatively discharging the primary carbide in the carbonization furnace;
Storage means for storing the primary carbide from the quantitative discharger;
A quantitative feeder for quantitatively feeding the primary carbide in the storage means to the dehalogenation furnace;
A waste treatment apparatus comprising:

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