JPH11309431A - Harmful component containing material treating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make properly controllable temperature in a heating treatment furnace to ensure the deposition of harmful, components and to make realizable making harmless the residue by installing a sensor fitting device passing through the heating treatment furnace. SOLUTION: A material to be treated is subjected to heating treatment in a first heating treatment furnace 10 to decompose and deposit harmful components. Next, the material to be treated from which the harmful components have been removed is subjected to carbonizing treatment in a separate, second heating treatment furnace 20 to reduce its volume, and the carbide containing no harmful components is taken out to enable reusing it, and also a sensor fitting device 19 for detecting temperature or gas components (concentration) in the heating treatment furnace 10 is provided to enable directly detecting the temperature or gas components, thereby temperature control for decomposing and depositing the harmful components can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment apparatus for treating an object to be treated such as waste containing a large amount of harmful components such as halogens by performing thermal treatment such as thermal decomposition. Harmful components (especially chlorine) contained in the material to be treated
When decomposing and precipitating, by reacting with an alkaline substance and replacing it with a harmless chloride to prevent the generation of harmful dioxins, together with the aim of detoxification of exhaust gas and detoxification of treated materials, Regarding a processing device that reduces the volume of this detoxified material to be treated, such as carbonization or incineration, so that harmful components do not remain in the residue by reacting, in particular, heating is performed to more reliably perform the detoxification process. The present invention relates to an apparatus provided with a means for detecting a temperature or a gas component in a process.

[0002]

2. Description of the Related Art General waste such as municipal waste, industrial waste, shredder dust, vinyl chloride and other wastes contain a large amount of halogen substances (chlorine, bromine, iodine, fluorine, astatine), especially chlorine components. If heat treatment such as incineration is performed, chlorine-based gas (hydrogen chloride,
Chlorine) generates a large amount of gas, generates generated gas (exhaust gas), residue after incineration (processed ash), and produces highly toxic dioxins in fly ash in the exhaust gas, causing problems such as environmental pollution and deterioration of incineration equipment. generate. Therefore, technology for solving these problems has been developed, and the following technology is currently disclosed.

(1) Treatment method by incineration This method involves incinerating an object to be treated such as waste in an incinerator. At the time of incineration, an alkaline substance (lime powder) is sprayed into the incinerator. Then, it is made to react with chlorine-based gas in the exhaust gas generated by incineration to generate harmless chloride (calcium chloride), thereby making the exhaust gas harmless (for example, JP-A-54-93864).

(2) Treatment method by dry distillation (pyrolysis) As this treatment method, pyrolysis is performed using a single rotary processing furnace (rotary kiln), and the discharged residue is incinerated by a later stoker, and pyrolyzed. A method is proposed in which the gas is burned in a reburn chamber, the generated high-temperature gas is passed through a boiler, etc., and then guided to a reaction tower, where the slaked lime slurry is sprayed and reacted with the exhaust gas in the same manner as described above. (For example, JP-A-5-33916).

Further, the waste is heat-treated by a low-temperature carbonization method in a rotary processing furnace to convert it into a low-temperature carbonized gas and a pyrolysis residue, which is burned in a high-temperature combustion furnace to produce a molten liquid slag. There is also proposed a method of cooling and solidifying into a glass state, and treating the generated gas by a boiler, a removal filter and a gas purifying device and discharging the gas (for example, Japanese Patent Application Laid-Open No. H08-208).
510789).

As another method, when an object to be treated is heat-treated in a heat treatment furnace, an appropriate amount of an alkaline additive which easily reacts with the chlorine component is mixed and heat-treated to fix the chlorine component in the treated ash. A method has also been proposed in which harmless exhaust gas is obtained by converting the treated ash to a chlorine component by washing with water or the like (JP-A-9-155326).

[0007]

The above-mentioned method based on incineration treatment is a treatment at a place close to the generation source because the alkali substance is sprayed into the incinerator. After processing.

Therefore, according to this method, although the chlorine-based gas removal effect can be expected to some extent, it is difficult to sufficiently satisfy the emission standard values of various gases according to the revised laws and regulations.

[0009] Moreover, because of incineration, the reaction temperature is high, and it is difficult to maintain a stable reaction. Further, spraying a large amount adversely affects the original combustion (generation of unburned phenomena), making it difficult to satisfy the emission standard values of various gases according to laws and regulations.

[0010] Further, in the method based on the dry distillation treatment, the object to be treated is thermally decomposed without burning, so that the instability factor as in an incinerator is easily removed. However, when the alkali substance is sprayed into the heat treatment furnace as in the incinerator, only the same effect as in the case of the incineration treatment can be expected.

In each of the above-mentioned treatment methods, when the exhaust gas contains a large amount of a halogen substance (particularly a chlorine-based gas), corrosion of facilities such as a heat treatment furnace and a flue becomes remarkable, and the durability of the facility becomes poor. This may cause a drop or exhaust gas leakage, which makes maintenance difficult.

In any of the above-described treatment methods, after a chlorine-based gas is once generated from an object to be treated, a chlorine-based gas and dioxins are removed in a subsequent step (by means such as a bag filter or combustion). There is a problem.

In order to solve these problems, the applicant of the present application has proposed to mix an alkaline additive during the heat treatment (Japanese Patent Application Laid-Open No. Hei 9-15532).
6).

In each of the above-mentioned treatment methods by dry distillation, the treatment for thermally decomposing an object to be treated to deposit a decomposition gas is performed in a single treatment furnace. In other words, the process is performed in a series of processes in which an object to be processed is supplied from one supply port of a single processing furnace and carbide is discharged from the other discharge port. In this series of processes,
Heating treatment (for example, 1 hour,
(300 ° C. to 600 ° C.), the processing of drying → pyrolysis → volume reduction (carbonization) of the object is continuously performed.

The temperature at which a halogen substance is thermally decomposed and deposited from an object to be treated is about 200 ° C. to 350 ° C., and the halogen substance decomposed and deposited in a processing furnace, particularly a chlorine-based gas, is easily filled. State.

Therefore, there is a possibility that dioxins are produced at this point.

Further, the object to be treated is agitated, and the generated chlorine-based gas is easily entrained in the object to be treated. If the object to be treated is heated to a temperature of 350 ° C. or more to form a carbide, Will be adsorbed.

[0018] The carbide, chlorine-based gas,
If the generated dioxins are present at the same time, the carbides will adsorb these chlorine-based gases and dioxins, and it is very difficult to remove the once adsorbed dioxins from the carbides.

Therefore, it is difficult to reuse the generated carbide, and it is necessary to bury it as a residue in a final disposal site or to process it by another means such as melting at a very high temperature.

Therefore, the applicant of the present application has proposed that during the decomposition treatment of the object to be treated, a halogen substance (particularly, hydrogen chloride) decomposed and precipitated from the object to be treated and brought into contact with an alkali substance to remove harmless chloride. By producing the gas, detoxification of the exhaust gas and the residue is realized, and the detoxified residue is reduced in volume by carbonization or the like in another heat treatment furnace to solve the above-described problem, and has already been proposed (Japanese Patent Application No. 10-38366).

However, in order to completely detoxify the exhaust gas and the residue, the mixing ratio of the object to be treated and the treatment agent, the heating temperature, the transfer speed of the object to be treated in the heat treatment furnace, the structure of the heat treatment furnace, etc. In consideration of the various conditions described above, it is performed based on experimental data and the like, but in order to realize this, the temperature in the heat treatment furnace,
Unless the temperature distribution and other gas components in the heat treatment furnace are detected, appropriate control cannot be performed.

The object of the present invention is to determine the temperature in this heat treatment,
It is an object of the present invention to provide such a processing apparatus provided with a sensor for detecting a gas component.

[0023]

SUMMARY OF THE INVENTION The present invention provides a means for detecting a temperature or a gas component in a heat treatment furnace, which is indispensable for temperature control necessary for producing harmless chlorides. The purpose is to realize more complete detoxification processing.

It has been known that a halogen substance (particularly, a chlorine-based gas) and an alkali substance react with each other to form harmless chloride when they come into contact with each other. Addition of an alkali substance to the material to be treated and heat treatment, hydrogen chloride contacts and reacts with the alkali substance immediately after decomposition and deposition to produce harmless chlorides, and detoxification of exhaust gas and residues at the source And the need for detoxification of exhaust gas containing chlorine-based gas as in the past is eliminated. Further, the chlorine-based gas is decomposed and precipitated in the decomposition reaction step, and the object to be treated (residue) after the decomposition and deposition is transferred to another heat treatment furnace and carbonized (paper is carbonized at about 350 ° C.). Heat treatment or heating at 800 ° C or higher to reduce the volume by incineration, so that the chlorine-based gas components and dioxin number are not adsorbed to the reduced-volume treated object and reused as resources. It turned out to be possible, and the technology related to this was already proposed.

The present invention makes it possible to control the heating temperature effectively by detecting the temperature or gas components in the heat treatment furnace by using them.

A concrete means for solving the problems according to the present invention is a cylinder having a means for stirring the object supplied from one end of the supply port and moving it to the other end of the discharge port, Decomposition reaction treatment by decomposing and depositing harmful components from an object to be treated in the heat treatment furnace and reacting with a treatment agent composed of an alkali substance, and providing at least one heat treatment furnace having a heating means for heating from, The object to be treated after this decomposition reaction treatment is subjected to a volume reduction treatment such as carbonization or incineration in a heat treatment furnace, and a sensor mounting device comprising a through pipe extending in the cylinder in the axial direction in the cylinder. And a sensor for detecting a temperature or a gas component is provided in the through pipe, and the detected temperature or the detected gas component concentration is used for temperature control in the heat treatment furnace.

Alternatively, there is provided a cylindrical body having means for stirring an object to be processed supplied from the supply port at one end and moving it to the discharge port at the other end, and heating means for heating the cylindrical body from outside. Up and down by providing at least two heat treatment furnaces,
Or place it horizontally on a plane, and connect the discharge port side of one heat treatment furnace and the supply port side of the other heat treatment furnace with a duct, and use one heat treatment furnace to remove harmful components from the workpiece. Is decomposed and precipitated, and is subjected to a decomposition reaction treatment for reacting with a treatment agent composed of an alkali substance.The object to be treated after the decomposition reaction treatment is transferred to the other heat treatment furnace through a duct, and carbonized in the heat treatment furnace. In addition to performing volume reduction processing, a sensor mounting device including a through pipe extending in the axial direction in the cylindrical body is provided in the cylindrical body, and a temperature or a gas component is detected in the through pipe. A sensor is provided, and the detected temperature or detected gas component is used for temperature control in the heat treatment furnace.

The alkali substance added in the above decomposition reaction step is an alkali metal (Na, K, etc.) or an alkaline earth metal (Ca, Sr, Ba, Ra) which reacts with a halogen substance to form harmless chloride. ) And at least one of the substances contained in alkaline earth metal compounds (lime, slaked lime, calcium carbonate, dolomide, etc.).

In the decomposition reaction step, after a drying step of drying the object to be processed, the processing may be shifted to a chloride generation step. These two steps may be performed in the same heat treatment furnace or may be performed in separate heat treatment furnaces.

Further, at least two heat treatment furnaces described above are provided, and a discharge port side of one heat treatment furnace and a supply port side of the other heat treatment furnace are communicated by a duct, and one of the heat treatment furnaces is used. A decomposition treatment is carried out to decompose and deposit harmful components from the object to be treated, and the object to be treated after the deposition of the harmful component is transferred to the other heat treatment furnace through a duct, and the heat treatment furnace reduces carbonization and the like. The volume-reduced material to be processed is discharged into a dissolution tank, which is separated into solid and liquid by a dehydrating means, and the solid matter is dried and taken out by a drying means.

The above-mentioned at least two heat treatment furnaces are arranged horizontally one above the other, and a duct connects the discharge port side of the upper heat treatment furnace with the supply port side of the lower heat treatment furnace. Decomposition process to decompose and precipitate harmful components from the object to be processed in the heat treatment furnace arranged on the upper side, and to reduce the volume of the object to be treated after removing the harmful components in the heat treatment furnace arranged on the lower side Perform the conversion process.

The upper and lower heat treatment furnaces are arranged substantially parallel to one side of the duct or on both sides of the duct.

A plurality (at least two) of heat treatment furnaces for the above decomposition treatment may be provided.

In this case, each discharge port is connected to a supply port of a heat treatment furnace for performing a volume reduction process by a duct.

The plurality of heat treatment furnaces for the decomposition treatment may be arranged on either side of the duct or on one side of the duct.

A plurality (at least two) of heat treatment furnaces for performing the above-mentioned volume reduction treatment can be provided.

In this case, each of the supply ports and the discharge port of the heat treatment furnace for performing the decomposition process are communicated by a duct.

The plurality of heat treatment furnaces for reducing the volume are arranged in parallel on both sides of the duct or on one side of the duct.

When two first and second heat treatment furnaces for reducing the volume are provided, the discharge port of the first heat treatment furnace and the supply port of the second heat treatment furnace are connected by ducts. The supply port of the first heat treatment furnace is communicated with the discharge port of the heat treatment furnace for decomposition treatment.

In each of the heat treatment furnaces, a duct is erected so that an object to be processed can flow down, and a heat treatment furnace for decomposition treatment is placed on an upper portion thereof, and a heat treatment furnace for volume reduction treatment is provided at a lower portion. Place it horizontally.

When a drying treatment for removing moisture from the object is performed as a pretreatment of the heat treatment furnace for the decomposition treatment, the drying treatment may be performed in the same heating treatment. The heat treatment furnaces for drying, decomposition and volume reduction are placed side by side, one after the other, and the discharge port for the heat treatment furnace for drying and the supply port for the heat treatment furnace for decomposition are Through a duct, and the outlet of the heat treatment furnace for the decomposition treatment and the supply of the heat treatment furnace for the volume reduction treatment are communicated with another duct.

The drying treatment is performed by heating at a temperature of 100 ° C. to 200 ° C. to remove water (H ₂ O) adhering to the object to be processed.

The heating temperature of the decomposition treatment is a temperature at which a halogen substance or the like decomposes and precipitates from the object to be treated, and is a temperature at which the object does not carbonize, for example, 200 ° C. to 350 ° C.

The volume reduction treatment is a step of carbonizing or ashing the object to be treated, in which a heat treatment is performed at a temperature at which the object to be treated is carbonized or incinerated. The object to be processed is generally 350 ° C to 700 ° C
And incinerated at 800 ° C. or higher.

The material to be reduced in volume is discharged to a dissolving tank, solid-liquid separated by a dehydrating means in the next step, and dried by a solid drying means to separate and collect carbides and metals.
Reuse.

As the drying means, hot gas used for heating in a heat treatment furnace can be used.

The heating means of the heat treatment furnace is formed by a heating coil (resistor or induction heating) surrounding the cylindrical body and is heated by energization, or a heating cylinder (gas duct) surrounding the cylindrical body is provided. Either a heating gas is introduced into the heating cylinder to heat it, or both heating means are used in combination.

The cylindrical body is not necessarily required to be rotatable, and means (such as a screw) for transferring the object to be processed may be provided in a fixed manner. A driven gear is provided, and the driven gear is rotationally driven by a motor. Further, driven gears are provided on the outer periphery of each cylindrical body of the heat treatment furnace installed above and below, and both driven gears are rotationally driven by a common motor.

With such a processing apparatus, detoxification of the reduced volume of the object to be processed can be realized.

The exhaust gas generated in the process of thermal decomposition and deposition of the above harmful components is subjected to removal of residual chlorine-based gas and generated dioxins by well-known means such as a conventional bag filter. .

[0051]

Embodiments of the present invention will be described below with reference to the drawings. As described above, the present invention heat-treats an object containing a harmful component, decomposes and deposits a harmful component from the object to be treated, and carbonizes the object after decomposing and depositing the harmful component. And a sensor mounting device having a through pipe for providing various sensors in the heat treatment furnace is provided. FIG. 1A is a conceptual diagram of a waste treatment facility for explaining the basic idea, and FIG. 1B is a sectional view of a cylindrical body.

In FIG. 1, reference numeral 10 denotes a first heat treatment furnace;
Reference numeral 20 denotes a second heat treatment furnace. First heat treatment furnace 10
Is a blade 11 for moving an object to be processed while stirring it.
(See FIG. 2), a rotatable cylinder 11, a heating cylinder 12 which forms a gas duct on the outer periphery of the cylinder 11 and introduces hot gas to heat the cylinder 11, and one end of the cylinder 11 And a discharge port 14 provided at the other end of the cylindrical body 11 for supplying the object to be processed into the cylindrical body 11.
5 is driven to rotate. The rotation driving means 15 includes a driving motor 15a, a driving gear 15b, and a driven gear 15c provided on the cylindrical body 11.

Reference numeral 16 denotes a supply-side duct surrounding the supply port 13 side, and 17 denotes a discharge-side duct surrounding the discharge port 14 side, so that an additional treatment agent Sm can be sprayed in as required. Reference numeral 18 denotes a heating coil (induction heating or resistor), which is provided on the outer periphery of the cylindrical body 11 on both sides of the heating cylinder 12 in a non-contact and close proximity to the cylindrical body 11, and constitutes a heating means together with the heating cylinder 12. .

In the figure, reference numeral 19 denotes a sensor mounting device, and P denotes a dynamic seal.

The second heat treatment furnace 20 has the same basic configuration as the first heat treatment furnace 10 described above. Therefore, in the same or corresponding parts, the first digit after 20 is set to the same number (for example, 21 is a cylindrical body, 22 is a heating cylinder, 29 is a sensor mounting device), and description thereof will be omitted.

Reference numeral 30 denotes a hopper, which is a mixture of an object to be treated and a treatment agent composed of an alkali substance and throws the mixture into the supply port 13 of the cylindrical body 11 through an opening / closing valve (opening / closing door) 31.
From the cylinder 11. The material to be treated may be any of solid matter such as general waste and industrial waste, ash, and sludge.

The hopper 30 has a crushing function and a function of mixing the processing agent, and may mix the processing agent with the processing agent while crushing the solid material. May be mixed and charged.

The cylindrical body 11 of the first heat treatment furnace 10 and the cylindrical body 21 of the second heat treatment furnace 20 are disposed vertically, and the discharge duct 17 of the cylindrical body 11 and the supply of the cylindrical body 21 are provided. The opening 23 is communicated with an opening / closing valve (opening / closing door) 32, and the discharge side duct 27 of the cylindrical body 21 of the second heat treatment furnace 20 is connected to a melting tank 34 via an opening / closing valve (opening / closing door) 33. And discharges the carbide or treated ash after the heat treatment.

Reference numeral 35 denotes a combustion device, for example, when burning LNG, burns LNG from the LNG tank 36 to generate hot gas. This hot gas is supplied into a heating cylinder 22 provided on the outer periphery of the cylindrical body 21 and heats the cylindrical body 21.
After being fed into the heating cylinder 12 of the cylindrical body 11 through the connecting pipe 37 and heating the cylindrical body 11, it is sent out to the drying means 39 through the discharge pipe 38 and used as heat of the drying means. , And is sent to the combustion means 42 through the pipe 41.

The combustion means 42 is supplied to the gas in the discharge duct 17 of the first heat treatment furnace 10 and the gas in the supply duct 26 of the second heat treatment furnace 20, and is sent from the combustion device 35 to be used for each heating unit. The burned gas is burned and sent to the bag filter 40 in the next step.

In the combustion means 42, the gas is burned to remove twistable components such as tar components, and the gas is cooled and sent to a temperature lower than the durability temperature of the bag filter 40.

The bag filter 40 reacts with the treating agent and sends the unreacted treating agent to the hopper 30 for reuse.
The exhaust gas is sent to an exhaust gas combustion section 43, where the exhaust gas is subjected to combustion processing by LNG or the like, and is discharged from a chimney 44.

Reference numeral 45 denotes a dehydrating means, which solidifies and separates the aqueous solution in the dissolving tank 34, and after the solid matter is dried by the drying means 39,
The liquid discharged to the carbide hopper 46 is neutralized by a water treatment means 47 with a neutralizing agent or the like, and then returned to the dissolving tank 34 for reuse.

FIG. 2 is an explanatory view of a sensor mounting device 19 (29) for detecting a temperature or a gas component. FIG. 2 (A) is a sectional view of a main part, and FIG. 2 (B) is a sectional view of a through pipe. .

The sensor mounting 19 is the same as the through pipe 1
9a and a sensor mounting pipe 19b housed in the through pipe 19a and having the sensor S mounted thereon.
a extends in the axial direction in the cylindrical body 11 (12), and is provided to penetrate both left and right side walls 11a and 11b. The other end is fixed by fastening means, and the other end can absorb expansion and contraction due to a change in temperature. Reference numeral 19c denotes a member that seals the through portion.

Reference numeral 19e denotes a peephole provided in the through pipe 19a, which is provided in a portion to which a sensor S described later is attached.

The sensor mounting pipe 19b is provided with a through pipe 19a.
And a sensor S for temperature detection or gas component detection. The sensor S is provided with a temperature sensing part such as a thermocouple at a position where the temperature inside the cylindrical body 11 is to be detected, for example, at a position near both ends or at the center of the cylindrical body. The detection signal is transmitted through the lead pipe 19a by the lead wire 19f.
Pulled out. Reference numeral 19g denotes a convex portion provided on the outer periphery of the sensor mounting tube 19b. The sensor S is provided in a valley between the convex portions, and the sensor S is damaged when the sensor mounting tube 19b to which the sensor S is mounted is housed in the through pipe 19a. Not to be. The penetration pipe 19 in the portion where the sensor S is located
A is provided with a viewing hole 19e, and the sensor S can directly measure the temperature or gas component in the cylindrical body 11.

The lead-out side of the lead wire 19f is hermetically sealed by a sealing member 19i between the lead-out portion of the cable 19h and the fixing member 19d.

Next, a series of processing methods will be described.
First, LNG is burned by the combustion device 35 to generate hot gas, which is supplied to the heating cylinders 22 and 12. If necessary, AC power is supplied to the heating coils 18 and 28 so that the cylindrical body 2
Heat 1,11. Next, (or at the same time) a mixture of the object to be treated containing the harmful component and the treatment agent, or the mixture is supplied from the hopper 30 into the cylindrical body 11 of the first heat treatment furnace 10 while mixing.

In the heat treatment in the first heat treatment furnace 10, the temperature and time at which harmful components are precipitated 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 sufficiently obtained. The treatment is performed at a temperature (200 ° C. to 350 ° C.) and time that can be covered.

The time and temperature are related to the state of the heat treatment furnace (conditions depending on the furnace such as the size and heating means), the amount of treatment, the treatment time, the treatment temperature, etc. Must be performed sufficiently, and data must be collected and stored.

The heating in the first heat treatment furnace is not "combustion and incineration" but "steaming and pyrolysis", and the chlorine-based gas and the like are decomposed and precipitated from the material to be treated to be treated. And react with. The gas after the reaction is reacted with the treating agent by the bag filter 40 to make it harmless. This process is a known process.

As a pre-process for taking in the bag filter 40, the gas is burned by the combustion means 42 to remove tar and the like, and the gas is cooled to a temperature lower than the endurance temperature of the bag filter 40.

The object to be treated after the harmful components have been deposited is passed through the duct 17 and the opening / closing valve 32 to the second heat treatment furnace 2.
0 is fed into the supply port 23 of the cylindrical body 21 where the material to be treated is carbonized (paper begins to be carbonized at about 350 ° C.).
The volume is reduced by heating to 00 ° C. or more by incineration. Since there is no decomposed gas containing harmful components such as HCl and dioxins in the second heat treatment furnace 20 in this volume reduction step, it is difficult for the carbonized or ashed material to absorb this. Absent.

The reduced volume of the object to be treated and the treatment agent after the reaction are discharged into the dissolving tank 34 via the duct and the opening / closing valve 33. In the dissolving tank 34, the reduced volume of the object to be treated, the treated agent after the reaction, and the like are dissolved in water, and this is separated into a solid and a liquid by a dehydrating means 45, and the solid is dried. After drying at 39, the liquid is taken out from the carbide hopper 46. On the other hand, the liquid is recovered by treating the treated agent with the water treatment means 47, injected with a neutralizing agent and the like, treated, and returned to the dissolution tank 43 for reuse. .

The temperature control means of the first and second heat treatment furnaces is performed as follows. In the first heat treatment furnace 10, a valve (open / close valve or three-way valve) is provided in the communication pipe 37 with the heating cylinder 22 of the second heat treatment furnace 20. Are provided, and the flow rate of the hot gas is controlled by means for selecting the number of used by the valve opening / closing control.
The temperature is controlled by means for controlling the alternating current supplied to the heater or the frequency in the case of induction heating. These controls are performed by a temperature detection sensor provided in the sensor mounting device 19,
Alternatively, the detection is performed by detecting the temperature or gas concentration in the cylindrical body 11 with a sensor for detecting a gas component. Or HC in duct 17
The gas concentration such as 1 is detected by the gas concentration meter 48 and is controlled automatically or manually. At this time, when the gas concentration in the duct 17 is higher than a predetermined value, the additional treatment agent Sm is injected into the duct 17 by spraying or the like, and is reacted with the remaining gas to make it harmless.

The temperature control means of the second heat treatment furnace 20 is substantially the same as that described above.
The control of the NG combustion means becomes main, and the electric heating means assists. These controls are also performed by the HC in the ducts 26 and 27.
Control is performed by reflecting detection signals from the gas concentration meters 49 and 50 for measuring the l concentration and the temperature sensor or the gas component sensor S in the sensor mounting device 29.

The heating of the drying means 39 utilizes the hot gas after heating the first and second heat treatment furnaces 10 and 20 so as to effectively use the heat energy.

In the embodiment of FIG. 1, as means for stirring and moving the objects to be processed in the first and second heat treatment furnaces 10 and 20, as shown in FIG. This is the case where the blades S are provided in the body to rotate and move the cylindrical body itself. However, it is not always necessary to rotate the cylindrical body, and the cylindrical body is fixed, and the screw body that is long in the axial direction inside is fixed. May be provided to rotate the screw body from the outside.

Further, as the heating means for heating the cylindrical body, both the heating by the hot gas and the heating by the heating coil have been described, but the heating by the heating coil is not always necessary.

As described above, according to the present invention, at least one heat treatment furnace is provided, and in this heat treatment furnace, harmful components are decomposed and precipitated from the object to be treated, and the object to be treated after the harmful components are precipitated is reduced in volume. And the temperature and gas component concentration in the heat treatment should be accurately detected, so the number of heat treatment furnaces and how to arrange them can be arbitrarily selected according to the conditions of the installation location, etc. Can also be realized. The embodiment will be described with reference to a schematic diagram.

Assuming that the heat treatment furnace for decomposing and depositing harmful components is the decomposition means 1, the heat treatment furnace for reducing the volume of the object to be treated after deposition is the volume reducing means 2 and the duct is 3 The processing device is schematically illustrated in FIG. That is, the disassembling means 1 and the volume reducing means 2 are arranged substantially vertically above and below the same vertical line on one side surface of the duct 3, and the object to be treated by the upper disassembling means 1 is reduced through the duct 3 to the lower part. The volume is reduced by the volume means 2 and discharged. Reference numeral 4 denotes an openable door (partition) whose degree of opening and closing can be controlled.

FIG. 4 is a schematic view of the second embodiment in which the disassembling means 1 and the volume reducing means 2 are linearly arranged on both sides of the duct 3. However, it is not always necessary to arrange them linearly, and they may be arranged radially at an arbitrary angle around the duct as viewed in plan.

FIG. 5 shows a third embodiment, in which (A) is a side view and (B) is a front view, and the disassembling means 1 and the volume reducing means 2 are on the same side of the duct 3 but are vertical. This is the case where the directions are shifted.

In the embodiments described above, the duct 3 is vertically erected. However, the duct 3 need not always be vertical, and may be inclined.

FIG. 6 is a schematic view of the fourth embodiment, in which the disassembling means 1 and the volume reducing means 2 are installed on the same plane.
In this case, a transfer means for transferring an object to be processed such as a screw body or a conveyor is provided in the duct 3.

The above description is for the case where one disassembling means 1 and one volume reducing means 2 are installed. When two disassembly means are installed, the arrangements shown in FIGS. 7 and 8 are available.

FIG. 7 is a schematic view of the fifth embodiment. FIG. 8 shows a sixth embodiment in which two disassembly means 1 and 1 'are arranged on both sides of the duct 3. , That (A)
2B is a side view, and FIG. 2B is a front view. The duct 3 is erected (upright or inclined), and the disassembling means 1 and 1 ′ are arranged horizontally on the same side of the upper part of the duct 3 to reduce the volume. Is a case where the projector is set horizontally below the duct.

Next, when two volume reducing means 2 are installed,
Besides the arrangement of two volume reducing means on the same side of the duct, there is an arrangement illustrated in FIGS. 9 and 10.

FIG. 9 is a schematic front view of the seventh embodiment, in which the duct 3 is erected (upright or inclined).
And disassembling means 1 is set horizontally on one side of the upper part,
The first and second volume reducing means 2 and 2 'are arranged laterally on both sides of the duct with the duct 3 interposed therebetween, and one of them is used selectively (non-continuously).

FIG. 10 is a front view of a schematic view of the eighth embodiment, in which a discharge port side of the disassembling means 1 and a supply port side of the first volume reducing means 2 communicate with each other through a duct 3. 1 volume reduction means 2
The duct 3 'communicates with the discharge port side of the container and the supply port side of the second volume reduction means 2', and carbonizes by the first volume reduction means 2. Metals are collected from the carbide and the remaining This is a case in which the residue is incinerated by the second volume reducing means 2 'and discharged, and the volume reducing means is used continuously.

When the drying means 5 is installed as a pre-process of the decomposing means 1, there are arrangements shown in FIGS.

FIG. 11 is a front view of the ninth embodiment, in which the drying means 5 and the disassembling means 1 and the volume reducing means 2 are arranged side by side in the horizontal direction. And a supply port of the decomposition means 1 through a duct 3 ', and an outlet of the decomposition means 1 and a supply port of the volume reduction means 2 through a duct 3, so that the object to be processed is supplied from the supply port of the drying means. The material to be treated is supplied and discharged from the discharge port of the volume reducing means 2 and the volume of the processed material is reduced by carbonization.

FIG. 12 is a front view of a schematic view of the tenth embodiment. In the ninth embodiment, two drying means 5 and 5 'are provided, dried by both drying means and supplied to the decomposition means 1. This is the case.

FIG. 13 is a front view of a schematic view of the eleventh embodiment, wherein the disassembling means 1 and the volume reducing means 2 are arranged on the same side of the duct 3, and the drying means 5 is disassembled with the duct 3 'interposed therebetween. It is the case where it is installed on the opposite side of the means.

In the above embodiments, the ducts are erected (vertically or inclined), the processing means are arranged vertically, and the processing object is moved between the processing means by flowing down. However, it is not always necessary to arrange them vertically, and they may be arranged in a plane depending on the conditions of the installation place and the like. However, in this case, it is necessary to provide a transfer means (for example, a screw driven to rotate) for transferring the object to be processed in the duct.

[0097]

As described above, the present invention decomposes and separates harmful components contained in the object to be treated and heats the object after decomposition and precipitation of the harmful component to reduce the volume. In the process of consolidation, since the residue and the dioxins generated due to the harmful components do not coexist, the dioxins do not adsorb and mix into the residues (carbides, ash). Therefore, the detoxification of the residue can be achieved, and metals and carbides can be taken out of the residue and reused, and environmentally preferable waste treatment can be performed.

Although it was difficult to directly detect the temperature or gas component (concentration) in the heat treatment furnace, the detection was made possible by providing a sensor mounting device penetrating the heat treatment furnace. By using this detection signal, the temperature in the heat treatment can be appropriately controlled, the deposition of harmful components can be ensured, and the detoxification of the residue can be realized.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a waste treatment facility according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a sensor mounting device.

FIG. 3 is a schematic diagram of the first embodiment of the present invention.

FIG. 4 is a schematic diagram of a second embodiment of the present invention.

FIG. 5 is a schematic view of a third embodiment of the present invention.

FIG. 6 is a schematic diagram of a fourth embodiment of the present invention.

FIG. 7 is a schematic view of a fifth embodiment of the present invention.

FIG. 8 is a schematic view of a sixth embodiment of the present invention.

FIG. 9 is a schematic view of a seventh embodiment of the present invention.

FIG. 10 is a schematic view of an eighth embodiment of the present invention.

FIG. 11 is a schematic view of a ninth embodiment of the present invention.

FIG. 12 is a schematic view of a tenth embodiment of the present invention.

FIG. 13 is a schematic view of an eleventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Decomposition means 2 ... Volume reduction means 3 ... Duct 4 ... Opening / closing door 5 ... Drying means 10, 20 ... Heat treatment furnace 11, 21 ... Cylindrical body 12, 22 ... Heating cylinder 13, 23 ... Supply port 14, 24 ... Discharge Outlets 15, 25 Rotational drive means 16, 26 Supply duct 17, 27 Discharge duct 18, 28 Heating coil 19, 29 Sensor mounting device 30 Hopper 31, 32, 33 Open / close valve 34 Melting tank 35 combustion apparatus 36 LNG tank 37 communication pipe 38 discharge pipe 39 drying means 40 bag filter 41 pipe 42 combustion means 43 exhaust gas combustion section 44 chimney 45 dewatering means 46 carbide hopper 47 Water treatment means 48, 49, 50 ... gas concentration meter

Claims (13)

[Claims] 1. A cylindrical body having means for agitating an object to be processed supplied from a supply port side at one end thereof and moving it to a discharge port side at the other end, and heating means for heating the cylindrical body from outside. At least one heat treatment furnace is provided to decompose and precipitate harmful components from the object to be treated in the heat treatment furnace and react with a treating agent comprising an alkali substance to perform a decomposition reaction treatment. Is subjected to a volume reduction treatment such as carbonization or incineration in a heat treatment furnace, and a sensor mounting device comprising a through pipe extending in the axial direction in the cylindrical body is provided on the cylindrical body. Alternatively, an apparatus for treating harmful components containing a sensor for detecting a gas component. 2. A cylindrical body having a means for stirring an object supplied from one end of a supply port and moving it to a discharge end on the other end, and a heating means for heating the cylindrical body from outside. At least two heat treatment furnaces are provided and arranged vertically and horizontally, or placed horizontally on a plane, and a discharge port side of one heat treatment furnace and a supply port side of the other heat treatment furnace communicate with a duct, In one heat treatment furnace, a decomposition reaction process is performed in which harmful components are decomposed and precipitated from the object to be processed and reacted with a processing agent composed of an alkaline substance. Transfer to a treatment furnace, and perform volume reduction treatment such as carbonization in the heat treatment furnace,
A harmful component-containing substance, wherein a sensor mounting device including a through pipe extending in an axial direction in the cylindrical body is provided in the cylindrical body, and a sensor for detecting a temperature or a gas component is provided in the through pipe. Processing equipment. 3. The at least two heat treatment furnaces are arranged vertically one above the other, and a duct connects the discharge port side of the upper heat treatment furnace with the supply port side of the lower heat treatment furnace. Decomposition process to decompose and precipitate harmful components from the object to be processed in the heat treatment furnace arranged on the upper side, and to reduce the volume of the object to be treated after removing the harmful components in the heat treatment furnace arranged on the lower side The harmful component-containing treatment apparatus according to claim 2, wherein the harmful component-containing substance is subjected to a chemical treatment. 4. The harmful component-containing substance according to claim 2, wherein the upper and lower heat treatment furnaces are arranged substantially parallel to one side of the duct or on both sides of the duct. Processing equipment. 5. A heat treatment furnace for performing a decomposition treatment, wherein at least two heat treatment furnaces are provided, and respective discharge ports and a supply port of the heat treatment furnace for performing a volume reduction treatment are communicated by a duct. An apparatus for treating a harmful component-containing substance according to any one of 2, 3, and 4. 6. An apparatus for treating harmful components according to claim 5, wherein the plurality of heat treatment furnaces for decomposing are disposed on both sides of the duct or on one side of the duct. 7. A heat treatment furnace for performing volume reduction treatment, wherein at least two heat treatment furnaces are provided, and each supply port and a discharge port of the heat treatment furnace for decomposition treatment are communicated by a duct. An apparatus for treating a harmful component-containing substance according to any one of claims 3 and 4. 8. The harmful component-containing composition according to claim 7, wherein at least two heat treatment furnaces for performing volume reduction treatment are arranged in parallel on both sides of the duct or on one side of the duct. Equipment for processing objects. 9. The first and second heat treatment furnaces for at least two volume reduction treatments, wherein a discharge port of the first heat treatment furnace and a supply port of the second heat treatment furnace are connected by ducts. 8. The method according to claim 7, wherein the first heat treatment furnace communicates with the discharge port of the heat treatment furnace for decomposing the supply port of the first heat treatment furnace.
An apparatus for treating a harmful component-containing substance according to any one of claims 8 to 13. 10. A duct is set up so that an object to be processed can flow down, a heating furnace for decomposition treatment is placed horizontally on an upper part thereof, and a heating furnace for volume reduction treatment is placed horizontally on a lower part thereof. The harmful component-containing substance treating apparatus according to any one of claims 2 to 9, wherein the apparatus is disposed. 11. A heating treatment furnace for drying an object to be supplied to a heating treatment furnace for performing a decomposition treatment, wherein the heating treatment furnace is provided for drying an object to be treated. An apparatus for treating a harmful component-containing substance according to claim 1. 12. The heat treatment furnaces for drying, decomposing, and reducing the volume are placed horizontally one after another, and the outlets of the heat treatment furnaces for the drying treatment and the heat treatment furnaces for the decomposition treatment are arranged. The supply port is communicated with a duct, and the discharge port of the heat treatment furnace for decomposition treatment and the supply port of the heat treatment furnace for volume reduction treatment are communicated with another duct.
An apparatus for treating a harmful component-containing substance according to claim 1. 13. The alkali substance as a treating agent is at least one of alkali metals, alkaline earth metals, and alkaline earth metal compounds which react with halogen substances to form harmless chlorides. 2. The method according to claim 1, wherein the selection is performed.
An apparatus for treating a harmful component-containing substance according to any one of claims 1 and 12.