JP2002121559A - Process and device for treating waste material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use treated matters by heating chlorine organic matters such as vinyl chloride films without synthesizing any dioxins. SOLUTION: A waste material 16 containing a chlorine organic matter is supplied from one end 4a of a horizontally laid dry distillation oven 4 at a sealed state. The waste material 16 is heated by an electric heating means within a heating temperature range of <=800 deg.C while stirred in the revolving dry distillation oven 4 for dry distillation. Through heating, the waste material 16 emits a dry distilled gas without synthesizing any dioxin. The dry distilled gas is discharged through a dissolution liquid 152. The remaining dry distillation residue 16' of the waste material 16 is allowed to cool by migrating within the dry distillation oven 4, and a chlorine absorbent is added to this to remove chlorine components from the dry distillation residue 16' to inhibit dioxin generation. The dry distillation residue 16' thus obtained is taken out as a high-quality activated charcoal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste material treatment in which waste materials containing chlorinated organic substances, such as industrial wastes and household wastes, are heated so that dioxins are not synthesized and the waste materials are effectively used. Related to the device.

[0002]

2. Description of the Related Art Transparent agricultural vinyl chloride films such as greenhouses are degraded by ultraviolet rays of sunlight.
The old vinyl chloride film is replaced every few years and discarded as industrial waste because the transparency is reduced by dust. Most of such vinyl chloride film waste is incinerated with other household waste by large-scale incinerator equipment such as an incinerator for municipal waste.

[0003] In general, when chlorine-based organic substances such as a vinyl chloride film are incinerated, the temperature is about 300 ° C to 600 ° C.
Dioxin is synthesized at a combustion temperature of 8 ° C, and a combustion temperature of 8
It is known that when the temperature is higher than 00 ° C., chlorine in the chlorine-based organic substance is separated and no dioxin is generated. It is also known that dioxin is synthesized in the course of cooling to about 600 ° C. to 300 ° C. when a combustion waste gas containing chlorine passes through a waste gas cooler such as a flue or a heat exchanger.

[0004]

In the current situation where large-scale incinerator facilities such as municipal garbage incinerators and the like are used to incinerate chlorinated organic wastes such as vinyl chloride films together with household garbage, the following problems exist. The disadvantages (1) and (2) have occurred.

[0005] (1) In the distribution industry, etc., packaging bags and the like are changed from vinyl chloride products to products such as polypropylene containing no chlorine, thereby suppressing the generation of chlorine gas in the incinerator and reducing fly ash containing dioxin. Despite the elimination as much as possible, fly ash containing dioxin is generated in the waste gas from incinerators due to vinyl chloride products contained in household garbage. At present, expensive facilities and costs are required.

(2) The municipal garbage incinerator is generally designed with a calorific value of the garbage of about 1200 kcal / kgf, while a calorific value of the vinyl chloride film is about 100 kcal / kgf.
It is as high as 00 kcal / kgf, and when the vinyl chloride film is burned at a high temperature in an incinerator, the furnace wall may be damaged. Therefore, it is necessary to sufficiently stir and disperse the vinyl chloride film with other low-calorie household waste. This makes the management and operation of municipal waste incinerators difficult.

[0007] In view of the above, waste materials of chlorinated organic substances, such as vinyl chloride films, tend to be increasingly incinerated in incinerators, and waste materials suitable for the harmless treatment of these chlorinated organic waste materials. There is a need for a processing device. Detoxified waste from incineration of chlorinated organic matter in incinerators is used as landfill materials together with other household waste incineration waste. Not done.

An object of the present invention is to provide a waste material treatment method and a waste material treatment device which can heat treat waste materials of chlorinated organic substances such as vinyl chloride without synthesizing dioxin, and can effectively utilize the waste materials for high quality activated carbon and the like. Is to do.

[0009]

In order to achieve the above-mentioned object, the present invention is characterized in that waste materials are heated by an electric heating means in a carbonization furnace in an oxygen-free state and carbonized. Here, it is desirable to heat the waste material while stirring it in an oxygen-free dry distillation furnace, and as a stirring method, a method of rotating the dry distillation furnace around a horizontal axis and stirring the waste material in the dry distillation furnace, A method in which the stirring blade is rotated in a fixed carbonization furnace to stir the waste material and a method in which the stirring blade is rotated in the rotating carbonization furnace are effective. The agitation of the waste material in the carbonization furnace is effective in heating the entirety of the waste material having a low thermal conductivity uniformly and efficiently with the conduction heat of the electric heating means to carbonize the waste material.

[0010] In order to achieve the above object, the present invention provides
In a carbonization furnace, waste material containing chlorine-based organic matter is heated by an electric heating means in a heating temperature range of about 800 ° C. or less to carbonize. Here, the heating temperature range of 800 ° C. or less at which the waste material is carbonized is 800 ° C. to 60 ° C., at which chlorine of the chlorine-based organic matter contained in the waste material is separated and dioxin is not synthesized.
A temperature range of about 0 ° C. is desirable. When carbonized in this temperature range, dioxin is not generated in the carbonized residue and the carbonized gas, and the treatment of the carbonized gas becomes easy. Dioxin is not synthesized even by heating at a high temperature exceeding 800 ° C., but as the temperature exceeds 800 ° C., waste of electric power for heating increases, and the carbonization residue immediately after the waste material is heated and carbonized becomes high. A disadvantage arises in that it takes a lot of time and place to lower the temperature to a temperature suitable for post-processing.

Further, the present invention is characterized in that the heating temperature range is adjusted based on the amount of waste material produced, the amount of power of the raw material and the electric heating means, the waste material heating time, and the location of the waste material in the carbonization furnace. In other words, when the waste material is heated and carbonized in the carbonization furnace, the amount of the waste material and the amount of the material are adjusted to adjust the amount of electric power at the time of heating to adjust the heating temperature at which the carbonization is properly performed. The temperature drop of the carbonization residue is adjusted by the elapsed time after heating and the location in the carbonization furnace.

Further, the present invention is characterized in that a step of mixing and stirring a chlorine absorbent which suppresses the synthesis of dioxin is added to the dry distillation residue of the waste material produced by heating in the above-mentioned heating temperature range. The chlorine absorbent used here is mainly composed of quick lime. If the carbonization residue is added when the temperature of the dry distillation residue is lowered to a temperature range of 600 ° C. to 300 ° C. where dioxin is easily synthesized, the synthesis of dioxin can be achieved. Is suppressed.

In order to achieve the above object, a waste material treatment apparatus according to the present invention comprises: a stirring means for stirring waste material in a carbonization furnace; and an electric heating device for heating the waste material in the carbonization furnace in a heating temperature range of about 800 ° C. or less. Means, and an additive supply means for adding a chlorine absorbent that suppresses the synthesis of dioxin to the dry distillation residue of waste materials generated by heating in the dry distillation furnace.

[0014] The stirring means here is of a type in which waste materials collide with each other in the furnace by rotating the carbonization furnace, or are stirred, or the stirring blades are rotated in a fixed carbonization furnace to stir the waste materials. It is effective to use a method that does this. The carbonization furnace has a continuous structure in which a large amount of waste material is continuously carbonized, and a batch structure in which a fixed amount of waste material is carbonized every fixed amount.

The waste material treatment apparatus having the continuous-type carbonization furnace according to the present invention is a horizontally long container structure in which the carbonization furnace has a waste material inlet at one end and a carbonization residue outlet at the other end. In this section, a heating electric input means is installed, and an additive supply means is installed at the other end on the carbonization residue outlet side, and the temperature of the carbonization residue is lowered from one end on the waste material inlet side to the other end on the carbonization residue exit side. It is characterized by moving the place while making it move.

Further, the waste material processing apparatus having the batch-type carbonization furnace according to the present invention has a container structure in which the carbonization furnace partially has an inlet / outlet which also functions as a waste material inlet and a carbonization residue outlet, and is supplied into the carbonization furnace. The waste material of the determined amount is heated by an electric heating means, and a chlorine absorbent is added to the dry distillation residue whose temperature has decreased over time after this heating.

[0017]

1 to 3 show a first embodiment, and FIGS. 4 and 5 show a second embodiment, which will be described in order. In the first and second waste material processing apparatuses shown in FIG. 1, parts having the same functions are given the same reference numerals even if they have different shapes and installation locations, to avoid duplication of description.

The waste material treatment apparatus shown in FIG. 1 is an apparatus for heating and carbonizing waste material 16 containing a chlorine-based organic substance such as vinyl chloride in a carbonization furnace 4, and the carbonization furnace 4 in which the inside is maintained in an oxygen-free state. A waste material supply means A for continuously supplying the waste material 16 into the carbonization furnace 4, an electric heating means B for heating the inside of the carbonization furnace 4, and a stirring means for agitating the waste material 16 in the carbonization furnace 4, for example, by rotation. A means C and an additive supply means D for supplying a chlorine absorbent 17 such as quicklime into the dry distillation furnace 4 are provided. Carbonization furnace 4
Is an oblong cylindrical heat-resistant container, to which waste material supply means A is connected to one end 4a on the waste material inlet side, and a heating means 43 of an electric heating means B is installed at the end 4a. An additive supply means D is connected to an end 4b opposite to one end 4a of the carbonization furnace 4. The rotating means C is, for example, a carbonization furnace rotating means for rotating the carbonization furnace 4 about its horizontal center line.

The waste material supply means A has, for example, a hopper 1 provided with a vertical screw feeder 5. Hopper 1
The waste material 16 is supplied to the waste material inlet 7 of the carbonization furnace 4 continuously while being compressed by the rotating screw feeder 5 in a compacted state. The screw feeder 5 is installed vertically in the vertical screw feeder outer cylinder 2, and the pitch is gradually reduced in the downward feeding direction.
This screw feeder 5 is connected to a motor 51 and a speed reducer 52.
By rotating the waste material 16, the waste material 16 is gradually compressed to be in a compact state, and is sent from the feed elbow 3 to the waste material inlet 7 of the dry distillation furnace 4. The waste material inlet 7 is sealed with waste material 16 continuously and air-tightly fed from the feed elbow 3, so that the dry distillation furnace 4 is maintained in an air-cut structure. Thus, the waste material inlet 7 is connected to the waste material 1
By sealing at 6, a special entrance sealing shutter or the like becomes unnecessary.

The end 4a on the waste material inlet side of the horizontally long cylindrical dry distillation furnace 4 is rotatably supported by a bearing 6 on a work table 61, and the other end 4b on the waste material (dry distillation residue) outlet side is used as a work table. The bearing 121 is rotatably supported by a bearing 121. Support rings 9 and 11 are fixed to the outer periphery of both ends of the carbonization furnace 4, and the support rings 9 and 11 are supported by a pair of front and rear ring receivers 91 and 111 installed below the carbonization furnace 4, respectively. The carbonization furnace 4 is configured to rotate around a horizontal center line in a stable fixed posture. By rotating the carbonization furnace 4, the waste material 1
The carbonization furnace rotating means of the rotating means C for stirring the carbonization furnace 6 is the carbonization furnace 4
A rotor drive ring 10 fixed at the center of the outer periphery of the drive gear 102 and a drive gear 102 meshing with the rotor drive ring 10 at a fixed position.
And a motor 101 for rotating the drive gear 102. When the carbonization furnace 4 is rotated by the motor 101, the waste material 16 supplied to the carbonization furnace 4 rotates and rises, and is repeatedly stirred and dropped. Even if the waste material 16 has a low thermal conductivity by this stirring, the entire waste material is efficiently heated by the electric heating means 43 without unevenness, so that the continuous dry distillation of the waste material 16 can be favorably performed. Become.

The rotary distillation furnace 4 is not limited to a cylindrical shape, but may be a polygonal cylinder such as a hexagonal cylinder or an octagonal cylinder.
Alternatively, the waste material may be agitated by rotating a stirring blade or the like inside the fixed-type dry distillation furnace.

The inner peripheral surface of the dry distillation furnace 4 is formed of a heat insulating material (caster) 42 as shown in the sectional view of FIG.
For example, a heating wire 43 of a heating means, which is a heating electric input means, is buried in a plurality of places of the two. The heating wire 43 is connected to the carbonization furnace 4
Are embedded in the inner peripheral surface of the vehicle so as to extend in the longitudinal direction of a plurality of rows. The heating wire 43 can be either a resistance heating wire or an electromagnetic induction heating wire. Further, the heating wire 43 may be a parallel arrangement in the front-rear direction shown in FIG. 2 or an arrangement in the circumferential direction of the inner periphery of the carbonization furnace (not shown). The plurality of heating wires 43 are arranged inside the dry distillation furnace 4 so as to be divided into a plurality of portions in the axial direction, so that the heating temperature distribution in the end portion 4a is highest on the waste material inlet side. The heating wire 43 is wired to a slip ring 81 fixed to the outer periphery of the end 4 a of the carbonization furnace 4,
1 is in contact with a conducting wire 8. From heating wire 8 to heating wire 4
By energizing 3, the inside of the dry distillation furnace 4 is heated in a predetermined heating temperature range of about 800 ° C. or less.

Further, the end 4 of the carbonization furnace 4 on the side of the residual carbonization residue exit.
As shown in FIG. 3, a plurality of scraper lifting scrapers 45 are fixed to the inner periphery of b, and when the carbonization furnace 4 is rotated, the scraper 45 becomes a residue of the residue in the end 4b (residual residue of the waste 16). 16 'are sequentially lifted and dropped onto the tray 133 fixed at the center of the end 4b. The carbonization residue 16 ′ that has fallen into the tray 133 is taken out of the carbonization furnace 4. An outlet 12 for the carbonization residue is formed at the end 4b of the carbonization furnace 4, and an outlet elbow 13 is connected to the outlet 12 in series.
It is opened and closed at 32. By closing the exit shutter 132, the carbonization furnace 4 is maintained in an air-cut structure. Further, for example, a horizontally long funnel 162 of the additive supply means D is installed through the dry distillation residue outlet 12, and the chlorine absorbent 17 is accommodated in the outer end of the funnel 162. The inner end of the funnel 162 is a downward opening end fixed at a fixed position in the end 4b of the carbonization furnace 4, from which the chlorine absorbent 17 is sprayed toward the carbonization residue 16 '. is there. Funnel 162 and dry distillation residue exit 1
The tray 133 is installed between the two.

The carbonization residue outlet 12 and the outlet elbow 13 at the end 4b of the carbonization furnace also serve as a discharge pipe for the carbonization gas from the carbonization furnace 4, and a part of the carbonization gas outlet conduit 13 is provided at a part of the outlet elbow 13.
1 are linked. The downward opening of the carbonization gas outlet conduit 131 is immersed in the solution 152 of the water seal tank 15, and the carbonization gas passes through the solution 152 and the gas outlet pipe 151.
Is discharged from By discharging the carbonization gas in this way, continuous discharge of the carbonization gas from the carbonization furnace 4 is facilitated, and outside air is easily prevented from entering the carbonization furnace 4 from the carbonization gas discharge path. The air cutoff structure in the carbonization furnace 4 for continuously carbonizing the waste material 16 is maintained.
Enables continuous carbonization of waste materials.

The waste material processing apparatus shown in FIG.
6 is harmlessly heat-treated to remove chlorine from the chlorine-based organic matter in the waste material 16 to produce high-quality activated carbon.

When the dry distillation furnace 4 is rotated to continuously supply the waste material 16 into the end 4a on the inlet side, the waste material 16 is supplied to the end 4a.
Is heated to about 800 ° C., which is the highest temperature, near the inlet of the furnace and carbonized. The waste material 16 is heated by the heating wire 43 while being rotated and agitated, and moves in the axial direction from the end 4a. During this movement, the waste material 17 is heated by the heating wire 43 at a temperature distribution having a gradient descending from the highest 800 ° C. By adjusting the amount of current in the heating wire 43, the temperature decreases toward the outlet. During this series of waste material heating treatments, the carbonization gas is released from the waste material 16, leaving a carbonization residue 16 ′ at the bottom of the carbonization furnace 4, and the carbonization residue 16 ′.
The temperature also drops toward the exit Eguchi. By heating the waste material 16 to about 800 ° C. while stirring it at the inlet of the rotating dry distillation furnace 4, the polymer of the waste material 16 is actively decomposed, and chlorine in the chlorine-based organic matter is separated, so that dioxin is not generated. For example, in the case of vinyl chloride polymer, about 800
Hydrogen atoms of vinyl chloride constituent atoms by high temperature heating close to ℃
The chlorine atoms and oxygen atoms are converted into hydrogen gas, chlorine gas, and oxygen gas by high-temperature decomposition to diverge into carbonized gas, which is finally discharged from the carbonization furnace 4. In addition, because of the heating in the carbonization furnace 4 maintained in the air blocking structure, there is no generation of carbon monoxide or carbon dioxide due to oxidation of carbon atoms in the waste material 16, and the carbonization temperature of the carbonized gas is 600 ° C to 300 ° C. Dioxin synthesis due to cooling is also eliminated. The carbonization gas is supplied from the carbonization residue outlet 12 at the end 4 b of the carbonization furnace 4 on the outlet side to the water sealing tank 15.
The harmful substances are dissolved in the dissolving liquid 152 while passing through the dissolving liquid 152 and only the harmless gas is supplied to the gas outlet pipe 1.
It is discharged from 51.

The carbonization residue 16 'generated by heating the chlorine-based organic matter of the waste material 16 in the carbonization furnace 4 is activated carbon in which carbon is porously bonded. The activated carbon at this stage is effectively used for water purification and the like. Has many problems in quality. The dry distillation residue 16 ′ containing the activated carbon moves to the end 4 b on the outlet side of the dry distillation furnace 4 due to the rotation of the carbonization furnace 4 and the pressing force of the subsequent waste material 16, and the temperature drops during the movement. When the carbonization residue 16 'moves to the end 4b and lowers the temperature to about 600 ° C. to 300 ° C., dioxin may be synthesized during the carbonization process. Therefore, since dioxin has a molecular structure in which a chlorine atom is bonded to two benzene rings connected by an oxygen atom, a funnel 16 is provided during the carbonization process at the end 4b so as to separate the chlorine atom bonded to the benzene ring.
From 2, the chlorine absorbent 17 is sprayed and mixed into the dry distillation residue 16 ′ and sufficiently stirred. The chlorine absorbent 17 is quicklime or bentonite. For example, when quicklime is supplied to the dry distillation residue 16 ′ and sufficiently stirred, quicklime (CaO) becomes 1
Harmless carbon-bound activated carbon and calcium chloride (Ca
OHCl).

The basic technology for producing quick harmless calcium chloride by reacting quicklime with chlorine atoms of dioxins as described above is described in an article in the Nihon Kogyo Shimbun, published on August 1, 2000. As described above, the synthesis of dioxin is more reliably suppressed by performing this basic technique in the oxygen-free carbonization furnace 4.

The carbonization residue 16 'to which the chlorine absorbent 17 is added at the end 4b of the carbonization furnace 4 becomes high-quality activated carbon of porous carbon, and is finally taken out of the carbonization furnace 4 to purify water as a by-product. Activated carbon and agricultural land soil improvement materials. The dry distillation residue 16 ′ that has become high-quality activated carbon is sent to the tray 133 by the scraper 45 by the rotation of the dry distillation furnace 4, and stays in the outlet elbow 13. Then, when the shutter 132 of the exit elbow 13 is opened, the exit elbow 13
Residue 16 'that has accumulated in the tray 14 falls on the extraction tray 14 and is extracted.

The waste material 16 is heated to about 800.degree. C. or less and carbonized within the dry distillation furnace 4 shown in FIG. 1 as described above. Of the waste material 16 to the carbonization furnace 4, the moving speed of the place of the waste material 16 in the carbonization furnace 4, the rotation speed of the carbonization furnace 4, and the like are adjusted. Such adjustments
Since the type of the waste material 16 is generally determined, it can be easily and accurately performed by several test runs.

Next, a waste material processing apparatus according to a second embodiment shown in FIGS. 4 and 5 will be described. This apparatus heats a fixed amount of waste material 16 in a fixed place in the carbonization furnace 4 to dry-evaporate it. And
This is a batch processing type waste material treatment apparatus in which the chlorine absorbent 17 is added after waiting for the temperature of the dry distillation residue 16 'to drop at the same place.

4 is a small-capacity cylindrical container having a short axial length and supported by a pair of bearings 6 and 121 so as to rotate about a substantially horizontal center axis. An entrance / exit 20 is formed in a part of the cylindrical portion of the small-capacity carbonization furnace 4 as a waste material entrance and a carbonization residue exit, and a double-opening heat-resistant lid 21 is installed at the entrance / exit 20. The slip ring 8 of the electric heating means B is attached to a shaft 46 supported by the bearing 6 of the carbonization furnace 4.
1, an energizing wire 8 is installed, and the shaft portion 46 is rotationally controlled by a motor 101 of a carbonization furnace rotating means as a stirring means to rotate the carbonization furnace 4, whereby the waste material 16 in the carbonization furnace 4 is rotated. Stirred. In addition, the bearing 12 of the small-capacity carbonization furnace 4
The dry distillation gas outlet conduit 131 and the funnel 162 of the additive supply means D are disposed so as to penetrate the shaft portion 47 supported by 1.
The funnel 162 in the carbonization furnace 4 has a plurality of nozzles 163 for uniformly spraying the chlorine absorbent 17 over the entire carbonization residue 16 ′ that has been heated and reduced in temperature in the carbonization furnace 4.

In the case of the apparatus shown in FIG.
Is opened, a fixed amount of waste material 16 is put into the carbonization furnace 4, and the lid 2 is opened.
1 is closed, the inside of the dry distillation furnace 4 is cut off from the air, and then the waste material is stirred by rotating the dry distillation furnace 4 and the waste material is heated by the heating wire 43 as an electric heating means. The heating of the waste material 16 is first performed at a maximum temperature of about 800 ° C., and the heating temperature is gradually lowered with the lapse of time, and the heating of the heating wire 43 is stopped when the amount of carbonization gas discharged decreases. By this series of heat treatments, the carbonized gas free of dioxin is released from the waste material 16, and the carbonized gas is discharged from the outlet conduit 131 through the carbonized gas dissolved liquid 152, and the carbonized residue 16 ′ remains in the carbonization furnace 4. . When the temperature of the dry distillation residue 16 ′ falls to 300 ° C. or less over time, the additive distillation means D causes the dry distillation residue 1 ′ to disappear.
The chlorine absorbent 17 is added to 6 'and stirred.

In the case of the apparatus shown in FIG. 4, similarly to the apparatus shown in FIG. 1, the rotary carbonization furnace may be a polygonal cylinder such as a hexagonal cylinder, or the stirring blades and the like may be rotated in the fixed carbonization furnace. Alternatively, the waste material and the dry distillation residue may be stirred.

[0035]

According to the present invention, waste materials containing chlorinated organic substances, such as vinyl chloride, can be heat-treated without synthesizing dioxin in a small-scale facility using a dry distillation furnace. The carbonized residue thus obtained can be converted into high-quality activated carbon, which can be effectively used as activated carbon for water purification or the like. In particular, a waste material treatment apparatus having a high practical value as a heat treatment apparatus for chlorine-based organic waste material can be provided.

In addition, waste materials such as chlorinated organic materials having a low thermal conductivity can be efficiently heated at a high temperature of about 800 ° C. by electrically heating and carbonizing waste materials while stirring the waste materials in a carbonization furnace. The synthesis can be suppressed, and a small amount of dioxin in the carbonization residue, which is carbonized in the carbonization furnace, is also added to the chlorine absorbent, so that dioxin in the carbonization residue is also suppressed, resulting in high reliability. An excellent waste material treatment apparatus can be provided.

Further, the carbonization furnace has a horizontally long container structure, and the waste material is continuously moved from one end to the other end thereof. During this movement, the waste material is heated to a high temperature and carbonized. By lowering the temperature of the inspection and adding the chlorine absorbent to the dry distillation residue whose temperature has decreased, it becomes easy to process a large amount of waste materials. In addition, since this large-scale treatment can be performed using one relatively small-scale carbonization furnace, it is easy to reduce the scale of the large-scale heat treatment equipment for waste materials.

Further, the waste material is batch-processed little by little by heating the material at a high temperature without moving the place only by stirring the waste material in the dry distillation furnace, lowering the temperature over time, and then adding the chlorine absorbent. A waste material treatment device can be provided as a small-scale heat treatment device suitable for performing a small-scale heat treatment device. It can be effectively applied to heat treatment equipment and heat treatment equipment dedicated to chlorine-based organic substances.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a waste material processing apparatus according to a first embodiment of the present invention.

Figure 2 is an enlarged cross-sectional view of FIG. 1T ₁ -T ₁ line.

FIG. 3 is an enlarged sectional view taken along the line T ₂ -T _{2 in} FIG. 1;

FIG. 4 is a longitudinal sectional view of a waste material processing apparatus according to a second embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view of FIG. 4T ₃ -T _3-wire.

[Explanation of symbols]

 4 Dry distillation furnace 7 Waste material inlet 12 Dry distillation residue outlet 16 Waste material 16 'Dry distillation residue 17 Chlorine absorbent A Waste material supply means B Electric heating means C Additive supply means D Stirring means, Dry distillation furnace rotating means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C01B 31/08 B09B 3/00 ZAB C08J 11/12 304Z F-term (Reference) 4D004 AA08 AA46 AB07 BA06 BA10 CA03 CA24 CB09 CB32 CB42 CC11 DA03 DA06 4F301 AA17 CA09 CA25 CA41 CA52 CA62 CA72 4G046 CA00 CC09 HA09 HB02 HC16 HC19 4H012 HB03

Claims (9)

[Claims] 1. A waste material treatment method comprising heating a waste material in an oxygen-free furnace in an oxygen-free state by an electric heating means to dry-evaporate the waste material. 2. A method for treating waste material, wherein the waste material containing chlorine-based organic matter is heated in an electric heating means at a heating temperature range of about 800 ° C. or less while being agitated in a dry distillation furnace and dry-distilled. 3. The heating temperature range is adjusted based on a waste material production amount and a raw material, an electric power of an electric heating means, a heating time of the waste material, and a place of the waste material in the carbonization furnace. Item 6. The waste material treatment method according to Item 2. 4. The waste material treatment according to claim 2, further comprising the step of mixing a dry distillation residue generated by heating the waste material in the heating temperature range with a chlorine absorbent which suppresses the synthesis of dioxin. Method. 5. The waste material treatment method according to claim 1, wherein the carbonization gas generated from the waste material in the carbonization furnace is discharged through a carbonization gas dissolving solution that blocks entry of outside air into the carbonization furnace. . 6. A stirring means for stirring waste material in a carbonization furnace,
An electric heating means for heating the waste material in the carbonization furnace at a heating temperature range of about 800 ° C. or less and carbonizing, and adding a chlorine absorbent for suppressing the synthesis of dioxin to the carbonization residue after the carbonization of the waste material in the carbonization furnace. And a material supply unit. 7. The waste material treatment apparatus according to claim 6, wherein the stirring means is a carbonization furnace rotating means for rotating the carbonization furnace around a substantially horizontal center line. 8. The carbonization furnace has a horizontally elongated container structure having a waste material inlet at one end and a carbonization residue outlet at the other end, and an electric input means for heating at one end on the waste material inlet side, and a carbonization residue outlet. The additive supply means is respectively installed at the other end of the side, and the place is moved while lowering the temperature of the dry distillation residue from one end on the waste material inlet side to the other end on the dry distillation residue outlet side. A waste material processing apparatus according to claim 6. 9. The carbonization furnace has a container structure partially having an inlet / outlet which also serves as a waste material inlet and a carbonization residue outlet, and a fixed amount of waste material supplied into the carbonization furnace is heated by electric heating means. The waste material treatment apparatus according to claim 6, wherein a chlorine absorbent is added to the dry distillation residue whose temperature has decreased with the passage of time.