JP2000240914A - Method and device for incineration of object to be treated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent environmental pollution from being generated, and accelerate a higher reduction of the volume by obtaining a residue having combustible components of which the volume has been reduced by heat-treating object to be treated, and incinerating the residue by burning, or heat-treating the objects to be treated by mixing or adding a chemical, and burning the residue which has been made harmless. SOLUTION: Objects to be treated containing organic substances are pulverized by crushing, and the pulverized objects are thrown into a rotating cylindrical body 2 through a hopper 14. A residue of which the volume has been reduced by a heat- treatment, and which has combustible components (e.g. carbide) is obtained in the rotating cylindrical body 2. The residue is incinerated by an incineration furnace. When a chemical is used, the objects to be treated and a chemical comprising an alkaline substance are mixed (or added). After sufficiently mixing them, they are thrown into the rotating cylindrical body 2 through the hopper 14, and the objects to be treated are dried, and then, thermally dissolved to deposit harmful components from the objects to be treated, and simultaneously, a reaction with the chemical is performed. Then, after heat-treated in the rotating cylindrical body 2 for a specified period of time, the objects to be treated are discharged from the discharging duct 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technology for subjecting an object to be treated such as waste containing an organic substance such as a halogen substance to heat treatment and incineration of the same, and more particularly to a chemical (for example, an alkaline substance) ) To thermally decompose (dry distill) the object to be treated, and contact and react with harmful elements (such as hydrogen chloride) decomposed and precipitated from the object to produce harmless reactants.
The present invention relates to a method and an apparatus for ashing an object to be treated, which obtains a harmless exhaust gas and a harmless residue, burns the obtained harmless residue to incinerate, and further reduces the volume.

[0002]

2. Description of the Related Art Various kinds of wastes such as industrial wastes and general wastes contain a large amount of organic substances such as halogen substances (chlorine, bromine, iodine, fluorine, and as titanium). When heated, various harmful substances (for example,
It is widely known that hydrogen chloride and dioxins are precipitated and contained in exhaust gas. Therefore, since this exhaust gas cannot be directly discharged into the atmosphere, purification processing of the exhaust gas (suppression of discharge) is generally performed before discharging into the atmosphere.

As a general exhaust gas purifying device, there is a bag filter device disclosed in Japanese Patent Application Laid-Open No. 8-108026. This apparatus uses slaked lime as a purifying agent for exhaust gas to remove hydrogen chloride and dioxins in the exhaust gas.

[0004] Further, hydrogen chloride generated in large quantities by heat treatment is generally neutralized with caustic soda or the like and recovered with hydrochloric acid.

However, chlorine-based gas components adhere to and are absorbed by substances other than exhaust gas, such as slaked lime powder used in bag filters, fly ash in the exhaust gas, and incineration residues (incinerated ash, etc.) for exhaust gas treatment. It is known that they produce highly toxic dioxins.

On the other hand, the applicant of the present application has proposed that an organic chlorine compound (hydrogen chloride), which is a halogen substance, performs "suppression of generation" instead of the conventional "suppression of emission", thereby producing harmful substances such as hydrogen chloride. It has been proposed to suppress the generation of waste gas, make the exhaust gas harmless, make the residue harmless, and reduce the damage of the treatment equipment due to chlorine.

That is, an alkali substance is added to and mixed with an object to be treated and heated at a predetermined temperature to decompose and precipitate hydrogen chloride, and at the same time, contact with the added and mixed alkali substance to cause a harmless chloride. A technique for generating a replacement has been found, and has already been disclosed in JP-A-9-155326 and JP-A-10-4371.
3, JP-A-10-235186, JP-A-10-23
No. 5187, and the like, and a dechlorinating agent in which the dechlorinating agent is made porous to increase the contact reaction area to enhance the reaction effect is also proposed (Japanese Patent Application No. 10-193844).

[0008] In addition, the object to be treated is heat-treated to form a carbide residue, which is used as a soil conditioner, a water purification agent, a snow melting agent, a humectant, etc., and is also used as a fuel in a wide range of fields. It is also being used as a recycled product.

[0009]

As described above, the use of carbides makes it possible to use them for various purposes as recycling. However, in reality, the following problems remain.

That is, a large amount of carbides can be obtained in a large-scale treatment facility, but the amount obtained is limited in a medium- or small-scale treatment facility. Not suitable. Therefore, as a waste treatment facility, the establishment of small and medium-sized treatment facilities is strongly desired by local governments, etc., but the distribution of charcoal generated at small and medium-sized facilities is collected and reused. It is actually difficult to secure them. However, at present, waste treatment must be performed and incineration must be performed as a means for minimizing the volume.

In the case of the incineration treatment, if the object to be treated is directly burned (incinerated) as in the prior art, the problem of pollution is caused as described above. In particular, when the incinerator is operated intermittently when the throughput of the object to be treated fluctuates greatly, dioxins are likely to be generated, which causes a problem of pollution.

The present invention has been made in view of such problems, and solves the above-mentioned problems by detoxifying the residue before incineration, and burning and incinerating the detoxified residue. It is.

[0013]

The inventor of the present invention added a chemical to detoxify an exhaust gas by non-combustion (dry distillation) to obtain a residue (carbide) having a detoxified combustible component. When the residue is burned and incinerated, that is,
Harmless intermediates → If burned, the harmless intermediates are burned and ashed even in the case of combustion.Therefore, there is no harmful exhaust gas and no harmful residue. Although harmless reactants (chloride) are present in the obtained residue due to the addition of the chemical, the chloride is an inorganic chloride.
(-1000 ° C.), the present invention has been made by paying attention to the fact that it does not decompose.

Means for solving the above-mentioned problems in the present invention is to heat the object to be treated to obtain a residue having a reduced combustible component, and burn the residue to incinerate the residue. Things. At this time, a heat treatment may be performed by mixing or adding a chemical to the object to be processed. By mixing the chemicals, the contact reaction between the harmful components of the exhaust gas deposited from the object to be treated and the chemicals produces harmless reactants to obtain detoxified exhaust gas and residues, and burns the detoxified residues. Harmless incineration treatment is possible.

By performing incineration treatment in this manner, even if the residue is intermittently burned, no problem of pollution is caused, so that a facility suitable for medium- and small-scale waste treatment can be obtained. .

Further, the treatment step includes a reaction step of replacing a harmful decomposition gas generated by heating the mixed substance or the added chemical with the treatment object with a harmless reactant, and a treatment step after deposition of the decomposition gas. The treatment is carried out by a step of heating the material to obtain a residue, and an incineration step of burning and incineration of the obtained residue.

The above reaction step and the step of obtaining a residue may be performed in a common heat treatment furnace or in different heat treatment furnaces.

The residue to be incinerated is not carbonized, but is a substance which can be reduced in volume and is free from harmful substances, or is a carbonized substance obtained by removing harmful substances.

The chemical to be mixed or added to the material to be treated is preferably a powder of an alkaline substance.

The chemical of the alkaline substance reacts with a harmful component decomposed and precipitated from an object to be treated by heating to produce harmless chloride, an alkali metal, an alkali metal compound, an alkaline earth compound, an alkaline earth metal compound. At least one selected from the substances contained in the above, or a mixture of two or more.

The alkali metal compound is selected from sodium hydrogencarbonate, sodium carbonate, sodium sesquicarbonate, natural soda, potassium carbonate, potassium hydrogencarbonate, sodium potassium carbonate, sodium hydroxide, potassium hydroxide, and a mixture of two or more kinds. Is included.

The apparatus for incineration of the object to be treated includes a heat treatment furnace for replacing and generating harmful decomposition gas generated by heating the agent mixed with or added to the object with a harmless reactant; It is composed of a heat treatment furnace for obtaining a residue by subjecting an object to be treated after gas deposition to a residue, and an incineration furnace for burning and burning the residue.

This incineration furnace may be either a rotary type or a stationary type, and may be a conventionally used incinerator.

In the case of the rotary type, if a means for transporting the residue while stirring is provided inside, the incineration and discharge can be performed smoothly.

In addition, air or LPG,
By providing a means for supplying a fuel gas such as LNG to assist combustion, combustion can be promoted.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a conceptual view of the basic structure of the heat treatment furnace of the present invention, and FIGS. 2 and 3 are explanatory views of a heating portion of the heat treatment furnace. FIG. 2 is a sectional view taken along the line AA of FIG. Show. In these figures, 1 indicates a heat treatment furnace, and the heat treatment furnace 1
A rotatable rotating cylinder 2, a heating jacket 3 for forming a gas duct on the outer periphery of the rotating cylinder 2 and introducing a hot gas to heat the rotating cylinder 2, and allowing the rotating cylinder 2 to be rotatable at both ends. Supporting rollers 4 and 4 'for supporting and a rotating cylindrical body 2
The rotary cylinder 2 is provided with a supply port 6 for carrying in the object to be processed at one end and an outlet 7 for discharging the object to be processed at the other end. As shown in FIGS. 2 and 3, a plurality of feed blades 2 b inclined in the radial direction and the axial direction with respect to the axis of the rotary cylinder are provided inside, The material is transferred from the supply port 6 to the discharge port 7 while stirring.

The heating jacket 3 is fixedly supported by a fixing member (not shown), and a mechanical seal 8 is provided at a contact portion with the rotating cylindrical body 2.

Reference numeral 9 denotes a supply duct that covers the supply port 6 side of the rotary cylinder 2 and supplies the object to be processed into the rotary cylinder. Reference numeral 10 denotes an object that covers the discharge port 7 and is processed in the rotary cylinder 2. Is a discharge side duct that discharges air.
The rotary cylinder 2 is provided with a rotary valve 11 to control the discharge amount of the object to be treated, prevent air from entering, and maintain the inside of the rotary cylinder 2 in a low oxygen atmosphere.

Reference numeral 12 denotes a hot gas generating means, for example, LNG,
A fuel such as LPG is burned to generate hot gas, which is supplied into the heating jacket 3.

As shown in FIGS. 1 and 2, the support rollers 4, 4 'are formed of a pair of support rollers 4, 4, and 4', 4 'at both ends of the rotary cylinder 2, respectively. The driving means 5, 5 'are provided at both ends, and are configured to drive the rotating cylindrical body 2 at both ends.

The rotation driving means 5 and 5 'are provided, for example, as shown in FIGS.
5'a, drive gears 5b, 5b 'and driven gears 2a, 2'a provided on the outer periphery of the rotary cylindrical body 2.

Further, the rotation driving means does not necessarily need to be provided at both ends of the rotating cylinder as in the above-mentioned example, but may be provided only at one central position.

In the above-described rotary driving means, a case has been described in which a gear is used as a means for transmitting power from a driving motor. However, it is not always necessary to use a gear, but a sprocket for a roller chain is provided, and the rotation is transmitted by the roller chain. You may make it.

When the heat treatment furnace having the above-described configuration is applied to a decomposition reaction treatment furnace in a waste treatment facility, first, a hot gas is generated by the hot gas generating means 12 and the hot gas is generated.
And the rotary cylinder 2 is heated to a temperature suitable for the purpose of the heat treatment.

Next, an object to be treated (for example, general waste) containing an organic substance is crushed into small pieces and put into the rotary cylinder 21 via the hopper 14. Here, a residue (for example, a carbide) having a combustible component reduced in volume by the heat treatment is obtained. The residue is ashed in an ash treatment furnace described below.

When a chemical is used, a substance to be treated and a chemical composed of an alkaline substance are mixed (or added). The drug is an alkaline substance that reacts with hydrogen chloride to produce harmless chloride, such as sodium bicarbonate (NaHC).
Using O ₃ ), the mixture is put into a mixer or the like to mix them.
At this time, the object to be treated is crushed and fined, or crushed while mixing. The drug is 5
Mix or add 30% by weight.

After these are sufficiently mixed, the mixture is put into the rotary cylinder 2 via the hopper 14, the object to be processed is dried and then decomposed by thermal decomposition to precipitate harmful components from the object and simultaneously react with the chemical. Is performed. This decomposition reaction treatment is performed at a temperature (200 ° C. to 350 ° C.) and time at which hydrogen chloride precipitates from the object.

After being subjected to heat treatment in the rotating cylinder for a predetermined time, it is discharged from the discharge side duct 10.

The heating temperature and time are also related to the properties of the object to be treated, the throughput, the state of the heating furnace (performance, size, heating means and other conditions depending on the furnace). It is important to keep it well or to collect data and store data.

Next, the above-mentioned heat treatment furnace is subjected to a thermal treatment such as thermal decomposition for an object to be treated such as waste containing a large amount of harmful components such as a halogen substance, and then to a volume reduction treatment. ,
An embodiment in which this is applied to an incineration apparatus for performing incineration processing will be described.

FIG. 4 is a conceptual diagram of the incineration apparatus.
Using two heat treatment furnaces, a first heat treatment furnace performs a decomposition reaction treatment for drying and detoxifying an object to be described later, and a second heat treatment furnace performs carbonization and incineration. This is a case in which a volume reduction process is performed and this is incinerated in an incineration furnace.

In FIG. 4, reference numeral 100 denotes a first heat treatment furnace;
Reference numeral 200 denotes a second heat treatment furnace, and 300 denotes an incineration furnace. These first and second heat treatment furnaces 100 and 2
00 has the same configuration as the heat treatment furnace 1 shown in FIG.
The incineration furnace 300 has different heating means but the same basic configuration.

Therefore, the same parts as those in FIG.
1 and 10 digits of 00 and 300 are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

The first heat treatment furnace 100, the second heat treatment furnace 200, and the ashing treatment furnace 300 are sequentially arranged in the vertical direction, and the second heat treatment furnace 200 has the supply port 206 side in the first direction. The discharge duct 10 is provided so as to extend to the supply port 206, and is disposed at the discharge port 107 side of the heat treatment furnace 100.
And a rotary valve 111 is provided therebetween.

The hot gas generated by the hot gas generating means 12 is supplied to the heating jacket 203 of the second heat treatment furnace 200.
And the rotating cylindrical body 202 of the second heat treatment furnace 200
Is heated, and the first heat treatment furnace 1 is
00 in the heating jacket 103. At this time, air 24 for temperature adjustment is sent in to adjust the temperature of the hot gas.

The outlet 2 of the second heat treatment furnace 200
07 and the supply port 306 side of the incineration furnace 300 are communicated by a common discharge side duct 210, and the second heat treatment furnace 200
The object to be treated carbonized or reduced in volume is introduced into the incineration furnace 300 and burned in the incineration furnace 300 for incineration.
It is discharged from the discharge duct 310.

The incineration furnace 300 has combustion assisting means 309 for supplying air or air and fuel (LNG, LPG) from outside to assist combustion. In the figure, 21
Reference numeral 1 311 denotes a rotary valve.

Reference numeral 14 denotes a hopper, which feeds the mixture of the treatment object and the chemical into the rotary cylinder 102 through the supply-side duct 109 while mixing.

Numeral 16 denotes a gas combustion means, which decomposes gas (exhaust gas) generated during the heat treatment in the first and second heat treatment furnaces 100 and 200 through gas outlet pipes 25, 26, 27 to produce a tar component or the like. Combustible components are burned, and the heat exchanger 17
After the exhaust heat is used, the exhaust gas is cooled by the exhaust gas cooling means 18, purified by the back filter 19, and discharged from the chimney 20.

The hot gas heated in the first heat treatment furnace 100 is used in the heat exchanger 17 from the exhaust pipe 13 through the gas pipe 21 and then cooled by the exhaust gas cooling means 18.
It is discharged from the chimney 20 through the back filter 19.

The cooling by the exhaust gas cooling means 18 can be performed by mixing cooling air from outside.

Next, a series of processing methods when a medicine is used will be described. First, the hot gas generating means 12 burns fuel such as LNG to generate a hot gas, and supplies the hot gas to the heating jacket 203 of the second heat treatment furnace 200 so that the rotary cylinder 2
After heating 02, it is fed into the heating jacket 103 of the first heat treatment furnace 100 via the connecting pipe 15, and the rotating cylindrical body 102 is heated.

Next, a substance containing a harmful component such as a halogen substance is crushed into fine pieces (or crushed while being mixed) and a medicine mixed, or the hopper 14 is supplied to the supply side duct while mixing. It is supplied to the inside of the rotating cylindrical body 102 of the first heat treatment furnace 100 via the 109.

In the heat treatment in the first heat treatment furnace 100, the temperature and time at which the chlorine-based gas precipitates from the object to be treated are investigated in advance, the properties of the object to be treated are grasped, and the result of the investigation is obtained. A temperature that can sufficiently cover (for example, 200 ° C. to 350
° C) and time. Adjustment of this temperature is performed by connecting pipe 15
This is performed by the supply amount of the air 24 for temperature adjustment supplied to the heater.

The heating in the first heat treatment furnace includes combustion,
Instead of incineration, steaming in a low-oxygen atmosphere and treatment by thermal decomposition (dry distillation) are performed, and a harmful component such as HCl gas precipitated by the thermal decomposition is brought into contact with the mixed chemicals.

The drug mixed here is at least HCl.
(Hydrogen chloride). It consists of an alkaline substance which reacts with (hydrogen chloride) to produce harmless chloride and other reactants.

As a specific example, Japanese Patent Application Laid-Open No. Hei 9-155326 and Japanese Patent Application Laid-Open No.
JP-A-10-235186, JP-A-10-235
No. 187, alkaline earth metal, alkaline earth metal compound, alkali metal, alkali metal compound,
Specifically, calcium, lime, slaked lime, calcium carbonate, dolomite, silicate (such as calcium silicate), sodium hydrogen carbonate, sodium carbonate, sodium sesquicarbonate, natural soda, sodium hydroxide, potassium hydroxide,
One of potassium hydrogen carbonate and potassium carbonate is selected, or several types are mixed and used. These dechlorinators are
5 to 30% by weight of the material to be treated is mixed or added.

Alternatively, a porous alkali substance (porous dechlorinating agent) disclosed in Japanese Patent Application No. 10-193844 previously filed by the present applicant is used. Porousization involves heating an alkaline substance containing vaporized components (O, H, CO, CO _2, etc.) and evaporating and separating the contained vaporized components as H ₂ O, CO _2. Through holes,
It is made porous by forming concave portions (holes).
This porosity increases the surface area and the contact area with the generated gas. The porous dechlorinating agent is used by mixing or adding 5 to 30% by weight to the material to be treated.

The above-mentioned alkaline substance body contains at least one selected from among substances contained in an alkali metal compound which contains a vaporized component and reacts with a harmful component to form harmless salts. Consists of a mixture.

The alkali metal compound is a simple substance selected from sodium hydrogen carbonate, sodium sesquicarbonate and potassium hydrogen carbonate, and a mixture of plural kinds.

Incidentally, sodium hydrogen carbonate (NaHC)
O ₃ ) is also referred to as sodium acid carbonate, sodium bicarbonate, or sodium bicarbonate as another name.
Also called baking soda.

Sodium sesquicarbonate (Na ₂ CO ₃ .Na
HCO ₃ .2H ₂ O) is also called sodium monohydrogen bicarbonate, sodium tricarbonate, or sodium sesquicarbonate, and is naturally produced as trona (natural soda).

In the above-mentioned compound of an alkaline substance, when a vaporized component other than the alkaline substance is heated and evaporated, it becomes porous and its surface increases, and the alkaline substance reacts with harmful hydrogen chloride to form harmless salts. It is clear from the following reaction formula that the harmful component is made harmless by substitution. For example, sodium bicarbonate (Na
In the case of HCO ₃ ), when a porous treatment is performed by heating, NaHCO ₃ → Na ₂ CO ₃ + H ₂ O + CO _{2 is obtained} , and H ₂ O and CO ₂ are separated and scattered to form Na ₂ which is made porous.
It becomes CO ₃ . When this reacts with hydrogen chloride, a harmful component, it becomes Na ₂ CO ₃ + 2HCl → 2NaCl + H ₂ O + CO ₂ , H ₂ O and CO ₂ are separated, and harmless salts (2NaC
1).

Similarly, potassium bicarbonate and sodium sesquicarbonate are made porous and reacted.

The surface area of the agent subjected to the porous treatment is increased, the contact area with the chlorine-based gas decomposed and precipitated from the object to be treated is increased, and a reaction product such as a new salt is generated. The effect increases.

As described above, in the rotary heating furnace, H
Decomposition gas of Cl component is generated. For example, when the above-mentioned sodium hydrogen carbonate (NaHCO ₃ ) is used, it reacts immediately with sodium hydrogen carbonate to (NaOH) + (HC
1) → (NaCl) + (H ₂ O) to produce harmless sodium chloride (NaCl),
Cl disappears. As a result, the HC in the cracked gas
The detoxification of the l component and the detoxification of the residue are performed simultaneously.

The object (residue) after the harmful components are precipitated and detoxified is passed through the discharge duct 10 and the rotary valve 111 to the rotating cylindrical body 2 of the second heat treatment furnace 200.
02, for example, in the case where waste plastic is reduced in volume and used as fuel or the like, the volume of plastic or the like is reduced immediately before the carbonization of the material to be processed (350 ° C. to 400 ° C.). ° C) or the temperature at which the object is carbonized (paper begins to carbonize at about 350 ° C).
Heat to 700 ° C. to reduce the volume.

The volume-reduced workpiece is introduced into the rotating cylinder 302 of the incineration furnace 300 through the discharge duct 210 and the rotary valve 211, and the carbide is stirred in the rotating cylinder. In addition, it burns and ashes while being transported.

At this time, air is supplied from the combustion assisting means 309 to promote combustion. If necessary, fuel such as LNG and LPG is supplied to promote combustion.

The combustion ash that has been incinerated in the incineration furnace 300 is supplied from the discharge duct 310 to the rotary valve 31.
The waste is discharged to the unloading vehicle 320 through 1 and melted by a burying or separate melting device to further reduce the volume.

In this case, since the decomposition gas containing the HCl component does not exist in the second heat treatment furnace 200, the carbonized or incinerated object does not absorb it.

On the other hand, the first and second heat treatment furnaces 100
Exhaust gas (cracked gas, carbonized gas) generated during the heat treatment in step 200 and 200 is sent to gas combustion means 16 via gas outlet pipes 25, 26 and 27, where it is burned.

Although harmful components such as hydrogen chloride are basically removed from the exhaust gas by the reaction treatment in the first heat treatment furnace 100, the harmful components such as hydrogen chloride cannot be reacted for some reason and remain in the exhaust gas. There is a possibility. In addition, since flammable components such as tar are included, the gas combustion means 16
Combustion. The heat after the combustion is used for hot water or the like by the heat exchanger 17, the exhaust gas is cooled by the exhaust gas cooling unit 18 to a temperature lower than the allowable temperature limit of the bag filter 19, and the bag filter 19 cleans and discharges it from the chimney 20.

In the embodiment of FIG. 4, the second
A case has been described in which the heat treatment furnace 200 is provided to temporarily reduce the volume such as carbonization, and then the incineration treatment is performed in the incineration treatment furnace 300. However, the object to be treated is rendered harmless in the first heat treatment furnace 100. Therefore, a similar effect can be expected by directly introducing this into the incineration treatment facility 300 and performing incineration.

The incineration furnace may be of a rotary type as in this embodiment or a fixed type, and may be a conventional incinerator.

[0077]

When heat-treating an object to be treated such as waste, it is ideal to use a recyclable carbide treatment method. However, a small heat treatment amount or a continuous heat treatment with large fluctuations is considered. If this is not possible, it is better to conduct the treatment at a small or medium-sized treatment facility. In small and medium-sized treatment facilities, it is often difficult and expensive to collect and use carbonized materials, but the use efficiency is often poor.

In such a case, it is desired to reduce the volume to a minimum and to perform final disposal. This minimum volume reduction is achieved by incineration.However, since incineration is performed by incineration, dioxins are generated when continual incineration and discontinuation of incineration are repeated. Pollution problems arise.

As described above, there are various problems in realizing the processing of the processing object having a small processing amount or a large variation. However, in the present invention, the processing object is once made harmless. Thereafter, the volume is reduced by burning and ashing to reduce the volume. Therefore, even if incinerated, the exhaust gas and the incinerated ash do not become harmful. Therefore, even if the incineration furnace is repeatedly operated and stopped, there is no problem of pollution, so that it is suitable for small and medium-sized waste treatment facilities and further volume reduction is promoted. Therefore, an extremely excellent effect can be obtained by applying this type of processing object to a processing facility.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a basic configuration of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is an explanatory view of the rotating cylinder of FIG. 1;

FIG. 4 is a conceptual diagram of an embodiment of the present invention.

[Explanation of symbols]

 1,100,200 heating processing furnace 2,102,202,302 rotating cylindrical body 3,103,203 heating jacket 4,104,204,304 supporting roller 5,105,205,305 rotating driving means 6 , 106, 206, 306 supply port 7, 107, 207, 307 discharge port 8 mechanical seal 9 supply duct 10, 210, 310 discharge duct 11, 111, 211, 311 rotary valve 12 heat Gas generating means 13 ... Exhaust pipe 14 ... Hopper 15 ... Connecting pipe 16 ... Gas burning means 17 ... Heat exchanger 18 ... Exhaust gas cooling means 19 ... Bag filter 20 ... Chimney 21 ... Gas pipe 24 ... Cooling air 25,26,27 ... gas outlet pipe 300 ... incineration furnace 309 ... combustion assisting means

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B09B 3/00 B01D 53/34 134A F23G 5/02 ZAB B09B 3/00 ZAB 5/14 ZAB 302G 303H F term (Reference) 3K061 AA07 AB03 AC20 BA04 BA05 KA05 3K065 AA07 AB03 AC20 4D002 AA17 AA19 AC04 AC10 BA03 BA05 BA12 BA13 BA14 CA05 CA13 CA20 DA01 DA02 DA04 DA05 DA11 DA12 DA16 EA02 GA01 GA02 GB03 GB08 HA08 HA10 4D004 AACB ACACB A24C CC11 4G066 AA11B AA13B AA43B AE02B CA31 DA20

Claims (12)

[Claims] 1. An incineration method for an object to be treated, wherein the object to be treated is heated to obtain a residue having a combustible component whose volume has been reduced, and the residue is burned and incinerated. 2. An exhaust gas detoxified by mixing or adding a chemical to an object to be treated, heating the mixture, and generating a harmless reactant by a contact reaction between the chemical and a harmful component of the exhaust gas deposited from the object to be treated. And a residue, and the detoxified residue is burned for incineration. 3. A reaction step of replacing a harmful decomposition gas generated by heating a substance to be treated and a mixed or added chemical with a harmless reactant, and heat-treating the substance after decomposition gas deposition. An incineration method for an object to be treated, comprising: a step of obtaining a residue by subjecting the residue; and an incineration step of burning and ashing the obtained residue. 4. The incineration method for an object to be treated according to claim 2, wherein the reaction step and the step of obtaining a residue are performed in a common heat treatment furnace or different heat treatment furnaces. 5. The incineration method for an object to be treated according to claim 1, wherein the residue is a harmful substance-removed substance or a carbide which has been detoxified and reduced in volume. 6. The method for ashing an object to be treated according to claim 2, wherein the agent to be mixed or added to the object to be treated is a powder of an alkaline substance. 7. An alkali chemical, an alkali metal, an alkali metal compound, an alkaline earth compound, an alkaline earth metal, which reacts with a harmful component decomposed and precipitated from an object to be treated by heating to form a harmless chloride. The incineration of an object to be treated according to any one of claims 2, 3, and 6, wherein at least one kind is selected from substances contained in the compound, or two or more kinds are mixed. Processing method. 8. An alkali metal compound selected from the group consisting of sodium hydrogencarbonate, sodium carbonate, sodium sesquicarbonate, natural soda, potassium carbonate, potassium hydrogencarbonate, sodium potassium carbonate, sodium hydroxide and potassium hydroxide, and a plurality of alkali metal compounds. The method according to claim 7, wherein the incineration is a mixture. 9. A heat treatment furnace for replacing a harmful decomposition gas generated by heat treatment of a substance to be treated with a mixed or added chemical with a harmless reactant, and heating the substance after the decomposition gas deposition. An incineration apparatus for an object to be processed, comprising: a heat treatment furnace for processing to obtain a residue; and an incineration furnace for burning the residue to incinerate the residue. 10. The apparatus for ashing an object to be treated according to claim 9, wherein the incineration furnace is of a rotary type or a stationary type. 11. The apparatus for ashing an object to be treated according to claim 9, wherein the rotary incineration furnace includes means for transporting the residue while stirring the inside. 12. The to-be-processed object according to claim 9, wherein the incineration furnace is provided with combustion assisting means for supplying one or both of air and fuel gas. Incineration equipment for products.