JP2001322809A - Method and device for manufacturing activated carbide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the dechlorination of ash in a carbonization furnace for manufacturing activated carbide. SOLUTION: The activated carbonization furnace 72 is structured by mounting carbonization pipes 12a, 12b provided with screw conveyers 10a, 10b inside in a combustion furnace 16 to dry in a front stage, to carbonize in a middle stage and to activate in a post stage. Dechlorination pipes 76a, 76b equipped with screw conveyers 74a, 74b inside are provided in the activated carbonization furnace 72 separately from the carbonization pipes to perform the dechlorination. The carbonization raw material is supplied to the carbonization pipe 12a to be dried to generate steam in the front stage, to carbonize the dried material to generate a thermal decomposition gas in the middle stage and to activate the carbide by steam and the thermal decomposition gas in the post stage to manufacture the activated carbide. Fly ash containing dioxin is introduced into the dechlorination pipe 76a added in the activated carbonization furnace 72 and heated and dechlorinated to make dioxin harmless.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for producing dioxins by using an organic combustible material containing carbon, for example, sewage sludge, coal, refuse gasification char, RDF, etc. as a raw material or a mixed material as an active carbide production material. The present invention relates to a method and an apparatus capable of producing an activated carbide having a wide range of applications, such as a substance suitable for removing and adsorbing such a polymer and a substance suitable as a deodorant.

[0002]

2. Description of the Related Art Conventionally, there is known a technique for producing activated carbon having large pores suitable for adsorbing dioxins by carbonizing and activating sewage sludge in an activated carbonization furnace. Heretofore, it has been mainly considered that dioxins in exhaust gas are adsorbed and removed by blowing activated carbon produced from sewage sludge or the like into exhaust gas from a waste incinerator or the like.

As a conventional carbonization furnace, as an example, as described in Japanese Patent Application Laid-Open No. H11-315283, there is known a configuration in which a cylindrical body having a screw conveyor therein is installed in a multistage manner in the furnace. The organic waste is supplied from the inlet at the upper end of the cylindrical body, is stirred and transported in the cylindrical body, is dried in the former stage, is then carbonized in the latter stage, and is carbonized from the outlet at the other end of the cylindrical body. It is being discharged.

[0004]

The Law Concerning Special Measures against Dioxins (enacted on January 15, 2000) specifies that the tolerable daily intake (TDI) of dioxins is 4 picograms or less per kg of human body weight. Environmental standards for air pollution, water pollution, and soil pollution are set as follows. Air quality standard 0.6 pg-TEQ / m ³ N Water quality standard 1 pg-TEQ / l Soil environment standard 1,000 pg-TEQ / g In addition, emission standards related to waste incinerators are air emission standard and water quality standard. Are set as follows for new facilities. Atmospheric emission standard 0.1 ng-TEQ / m ³ N (incineration capacity 4 t / h or more) Water quality emission standard 10 pg-TEQ / l In addition, the treatment standard for dust and soot for waste incinerators is ³ ng for new facilities. -TEQ / g, soot and incineration ash and other cinders must be treated to reduce dioxins to 3 ng / g or less. In order to strengthen the above regulations, it was necessary to treat not only dioxins in exhaust gas but also dioxins in ash so as not to exceed the standards.

[0005] However, the conventional technique is to blow activated carbon produced in an activated carbon furnace into exhaust gas,
Dioxins in exhaust gas are adsorbed and removed, and fly ash is separated from exhaust gas to suppress the emission of dioxins into the atmosphere, and fly ash containing dioxins separated from exhaust gas is also harmless. It did not perform the conversion process. Also, as a raw material for producing activated carbide,
Sewage sludge was mainly used, and the application range of activated carbide produced in a carbonization furnace was limited.

Further, regarding the effects of the material supply amount, the heat transfer area, the outside gas temperature and the material supply temperature on the activated carbide temperature, the relationships shown in FIGS. 7 and 8 are established, and the heat transfer area is increased. In addition, the temperature of the activated carbide can be increased to near the outside gas temperature by reducing the supply amount of the raw material. However, a conventional carbonization furnace (for example, see Japanese Patent Application Laid-Open No. 11-31528).
In the case of the carbonizing furnace described in Japanese Patent Publication No. 3 (2003), it was difficult to optimally adjust the production conditions of the carbide in accordance with the conditions of the raw material, the use of the carbide, and the like.

[0007] The present invention has been made in view of the above points, and an object of the present invention is to provide an organic combustible containing carbon, for example, sewage sludge, coal, refuse gasification char, RDF, or other single material or mixed material. Suitable for the adsorption and removal of polymers such as dioxins by using the material as the active carbide production raw material and adjusting the production conditions of the activated carbide in the carbonization furnace optimally according to the conditions of the raw material and the application of the activated carbide. It is an object of the present invention to provide a method and an apparatus for producing an activated carbide capable of producing an activated carbide having a wide range of application, such as an activated carbon and a substance suitable as a deodorant. Further, an object of the present invention is to add an ash dechlorination pipe separately from a carbonization pipe in a carbonization furnace to blow activated carbon produced in the carbonization furnace into exhaust gas to adsorb and remove dioxins in the gas. In addition, a method and an apparatus for producing an activated carbide capable of introducing fly ash containing dioxins separated from exhaust gas into a dechlorination pipe and dechlorinating the same to decompose and detoxify dioxins in the ash. Is to do.

[0008]

Means for Solving the Problems In order to achieve the above object, a method for producing activated carbide according to the present invention comprises a carbonization furnace in which a carbonized pipe provided with a screw conveyor is installed in a combustion furnace. The carbonization raw material, which is a carbon-containing organic combustible, is supplied into the carbonized pipe by the raw material supply device so that the drying step is performed at the preceding stage of the carbonized pipe, the carbonizing step is performed at the middle stage, and the activation step is performed at the latter stage. Heat treatment, drying the carbonized raw material at the previous stage of the carbonized pipe and generating steam, carbonizing the dried product at the middle stage of the carbonized pipe and generating pyrolysis gas, and converting the carbide to steam and pyrolysis gas at the latter stage of the carbonized pipe. The activated pyrogen is activated and activated to produce an activated carbide.The pyrolysis gas is withdrawn immediately above the carbonization pipe at a later stage, and the extracted pyrolysis gas is introduced into a washing scrubber to separate heavy metals. The is configured to combust and introduced into the burner or the vicinity thereof provided below the carbonization furnace (see Figure 1).

In the method of the present invention, a carbonizing furnace provided with a screw conveyor therein is installed in a combustion furnace to constitute a carbonizing furnace. In the carbonization furnace, a dechlorination tube with a screw conveyor is installed inside the carbonization furnace separately from the carbonization tube so that the dechlorination treatment is performed, and the organic combustible containing carbon The raw material carbonized raw material is supplied into the carbonized pipe by the raw material supply device and subjected to indirect heating treatment.The carbonized raw material is dried at the previous stage of the carbonized pipe and steam is generated. A gas is generated, and the carbide is activated and activated by steam and pyrolysis gas at a later stage of the carbonization pipe to produce an activated carbide, and ash containing dioxins is introduced into the dechlorination pipe added in the carbonization furnace. Indirect Processing, it is characterized by decomposing and detoxify dioxins in the ash by ash handling dechlorinated (see FIG. 5).

In the method of the present invention, a carbonizing furnace having a screw conveyor provided therein is installed in a combustion furnace to constitute a carbonizing furnace, wherein a drying step is performed before the carbonized pipe, a carbonizing step is performed in a middle stage, and a carbonizing step is performed in a middle stage. In the carbonization furnace, a dechlorination tube with a screw conveyor is installed inside the carbonization furnace separately from the carbonization tube so that the dechlorination treatment is performed, and the organic combustible containing carbon The raw material carbonized raw material is supplied into the carbonized pipe by the raw material supply device and subjected to indirect heating treatment.The carbonized raw material is dried at the previous stage of the carbonized pipe and steam is generated. Gas is generated, and the carbide is activated and activated by steam and pyrolysis gas at the later stage of the carbonization pipe to produce activated carbide, which is blown and separated from the exhaust gas from which dioxins are adsorbed and removed. Fly ash is introduced into the dechlorination pipe added to the carbonization furnace, indirectly heat treated, and the fly ash is dechlorinated to decompose and detoxify dioxins in the ash. (See FIG. 6).

In the above method of the present invention, the pyrolysis gas is withdrawn immediately above the carbonized pipe at a later stage, and the withdrawn pyrolysis gas is introduced into a dechlorination pipe, and the inside of the pipe is reduced gas atmosphere suitable for dechlorination. Preferably, the pyrolysis gas extracted from the dechlorination tube is introduced into a burner provided in the lower part of the carbonization furnace or in the vicinity thereof and burned (see FIG. 5). Further, in the method of the present invention, the pyrolysis gas is withdrawn immediately above the carbonization pipe at a later stage, and the extracted pyrolysis gas is introduced into the dechlorination pipe to make the inside of the pipe a reducing gas atmosphere suitable for dechlorination. After introducing the pyrolysis gas extracted from the dechlorination tube into a washing scrubber to separate heavy metals, it is preferable to introduce the pyrolysis gas into a burner provided below the carbonization furnace or in the vicinity thereof and burn it ( See FIG. 6).

Further, in these methods of the present invention, air can be supplied into the carbonized pipe to increase the temperature in the pipe (see FIGS. 1 and 5). Further, in these methods of the present invention, it is preferable to provide a plurality of stages of air inlets into the carbonization furnace and control the temperature of the gas outside the tube in the carbonization furnace by the air supply amount (see FIGS. 1 and 5). . Further, in these methods of the present invention, steam can be directly supplied into the carbonized pipe near the inlet of the carbonized pipe to promote the activation of carbides by the steam in the subsequent stage (see FIGS. 1 and 5).

Further, in these methods of the present invention, the temperature of the carbonization furnace product in the carbonized pipe can be adjusted by adjusting the number of rotations of the motor of the raw material supply device and the supply amount of the carbonized raw material (see FIGS. 5). In addition, in these methods of the present invention, the residence time of the carbide in the furnace can be adjusted by adjusting the rotation speed of the screw conveyor in the carbonized pipe (see FIGS. 1 and 5). In these methods of the present invention, a single material or a mixed material of at least one of sewage sludge, coal, waste gasification char, and RDF can be used as a carbonization raw material for producing activated carbide. In this case, it is preferable to use a mixed material of sewage sludge and coal as a carbonization raw material for producing activated carbide.

[0014] In the apparatus for producing activated carbide of the present invention, a carbonized pipe having a screw conveyor provided therein is installed in a combustion furnace, and the carbonized pipe is provided with a former stage of the carbonized tube as a drying zone, a middle stage as a carbonizing zone, and a latter stage as an activation zone. A burner is provided below the carbonization furnace, a raw material supply device is provided at an end inlet of the carbonized pipe, and an activated carbide discharge device is provided at an end outlet of the carbonized pipe, and supplied from the raw material supply device. The carbonized raw material is subjected to indirect heating treatment in the carbonized pipe and activated by drying and generating steam in the first stage, carbonizing and generating pyrolysis gas in the middle stage, and activating and activating by steam and pyrolysis gas in the subsequent stage. It becomes carbide and is discharged from the carbonized pipe by the activated carbide discharge device.A pipe for extracting pyrolysis gas is connected immediately above the carbonized pipe, and the pipe is washed with a scrubber. Is connected, the outlet of the washing scrubber is connected to the burner or the vicinity thereof, the pyrolysis gases heavy metals are separated and removed is characterized in that so as to be burned by a burner (see FIG. 1).

Further, in the apparatus according to the present invention, a carbonized pipe having a screw conveyor provided therein is installed in a combustion furnace, and a carbonizing furnace is configured such that the former stage of the carbonized tube is a drying zone, the middle stage is a carbonizing zone, and the latter stage is an activation zone. A raw material supply device is provided at an end inlet of the carbonized pipe, and an activated carbide discharge device is provided at an end outlet of the carbonized pipe, and the carbonized raw material supplied from the raw material supply device is indirectly heated in the carbonized pipe. , Drying and steam generation in the first stage, carbonization and pyrolysis gas generation in the middle stage, and activation by steam and pyrolysis gas in the second stage
It becomes activated carbide by the activation, and is discharged from the carbonized pipe by an activated carbide discharge device.In the carbonization furnace, a dechlorination pipe provided with a screw conveyor inside is provided separately from the carbonized pipe. Ash containing dioxins is introduced into the dechlorination tube added inside and subjected to indirect heating treatment, and the dioxins in the ash are decomposed and made harmless by dechlorinating the ash (See FIGS. 5 and 6).

In the above-mentioned apparatus of the present invention, it is preferable to connect a pyrolysis gas extraction pipe immediately above the carbonization pipe (see FIGS. 5 and 6). Further, in the above-described apparatus of the present invention, it is preferable that a pyrolysis gas extraction pipe be connected immediately above the carbonization pipe, and that the pyrolysis gas extraction pipe be connected to the dechlorination pipe (FIG. 5). , FIG. 6). Further, in the above-described apparatus of the present invention, a pyrolysis gas extraction pipe is connected immediately above the carbonization pipe at a later stage, the pyrolysis gas extraction pipe is connected to a dechlorination pipe, and a dechlorination pipe is connected. It is preferable to connect an extraction pipe for the pyrolysis gas at a later stage, and connect the extraction pipe to the burner or its vicinity (see FIG. 5). Further, in the above-described apparatus of the present invention, a pyrolysis gas extraction pipe is connected immediately above the carbonization pipe at a later stage, the pyrolysis gas extraction pipe is connected to a dechlorination pipe, and a dechlorination pipe is connected. A pyrolysis gas extraction pipe is connected to the subsequent stage,
It is preferable that this extraction pipe be connected to a washing scrubber, and that the outlet of the washing scrubber be connected to a burner or its vicinity (see FIG. 6).

Further, in these apparatuses of the present invention, the carbonized pipe may be formed by forming a ceramic coating layer on the outer surface of a metal pipe. In these devices of the present invention, the carbonized pipe may be a ceramic carbonized pipe. Further, in these devices of the present invention, it is preferable to provide a support member for reducing a bending moment due to the weight of the carbonized pipe under the substantially central portion in the longitudinal direction of the carbonized pipe (see FIG. 2). In this case, it is preferable that the support member be a water-cooled tube or an air-cooled tube provided substantially horizontally so as to penetrate the carbonization furnace (see FIG. 2).

Further, in the apparatus of the present invention, it is preferable that the screw of the screw conveyor provided in the carbonized pipe is a ribbon-type screw having a flow path through which gas flows around the screw axis (see FIG. 3). ). Further, in these apparatuses of the present invention, it is preferable that the activated carbide discharging device is an inclined conveyor in which the outer peripheral portion of the conveyor has a water cooling jacket structure (FIGS. 1 and 5).
reference). Further, in these apparatuses of the present invention, the carbide extraction pipe for extracting the activated carbide from the carbonization pipe and the conveyor portion of the inclined conveyor connected to the carbide extraction pipe are free from the injection of the pyrolysis gas and the inflow of outside air. Thus, it is preferable that the activated carbide is filled with the activated carbide powder so that the activated carbide is discharged from the conveyor outlet of the inclined conveyor by overflow. In these apparatuses of the present invention, it is preferable to attach an ash discharge device or provide an ash discharge port at the bottom of the carbonization furnace (see FIG. 4).

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below, but the present invention is not limited to the following embodiments and can be implemented with appropriate modifications. 1 to 4 show a schematic configuration of an apparatus for performing a method for producing an activated carbide according to a first embodiment of the present invention. As shown in FIG. 1, in the present embodiment, as an example, two stages of carbonized pipes are installed, and a carbonized pipe 12 having screw conveyors 10 a and 10 b provided therein, respectively.
a and 12b are connected by a communication pipe 14 and installed in a combustion furnace 16 to constitute an activated carbonization furnace 18. Of course, it is also possible to adopt a configuration in which three or more stages of carbonized pipes are arranged, or a configuration in which only one stage is arranged. A hopper 20 for storing a carbonized raw material and a raw material supply device (a rotary valve in FIG. 1) 22 are provided at an end inlet of the carbonized pipe 12a, and the carbonized raw material supplied from the raw material supply device 22 into the carbonized pipe 12a is provided. The mixture is stirred and transferred by the screw conveyor 10a, enters the carbonized pipe 12b through the communication pipe 14, and is stirred and transferred by the screw conveyor 10b. The carbonized raw material is dried in the preceding stage by the indirect heating by the combustion gas of the burner 24 in the carbonized pipes 12a and 12b, carbonized in the middle stage, and the steam generated during the drying and the pyrolysis gas generated by the carbonization. Activation and activation are performed at a later stage. Although not shown in FIG. 1, the combustion furnace 1
The inside of the tube 6 is formed by a partition member (baffle) provided substantially horizontally on the side of the carbonized pipes 12a and 12b so that the combustion gas of the burner 24 flows in a meandering manner while flowing upward from below in the longitudinal direction of the carbonized pipe. It has become. 26 is a refractory wall,
28 is an exhaust port. The activated carbide produced as described above is supplied to the carbide discharge pipe 30 at the end exit of the carbonized pipe 12b.
And is discharged out of the system by an activated carbide discharge device (inclination conveyor in FIG. 1) 32. 34 is an activated carbide storage tank.

The carbonized raw materials for producing activated carbide include:
There are the following single and mixed materials, but carbon (C element)
The entirety of the organic combustibles contained is the target material of the present invention. Sewage sludge: Produces activated carbon with high reactivity. Coal: A high proportion remains as carbide. (Depending on coal type and production conditions, about 50% by weight is activated carbide.) Garbage gasification char (garbage carbide) RDF (solid fuel made from garbage) In this case, mixed use of sewage sludge and coal Most desirable.
Carbides produced from sewage sludge are suitable for the adsorption of polymers such as dioxins because they form large pores.Carbides produced from coal are suitable as deodorizers. Carbide produced from the mixture has both features, making it an activated carbide with a wide range of applications.

Since the carbonized pipe has a high temperature atmosphere of 500 to 1000 ° C., it is liable to be worn due to a decrease in material strength and a reduction in thickness due to high-temperature corrosion. The corrosion is S, Cl and Na,
It is caused by the reaction of K and so on.
It is necessary to prevent the metal carbonized pipe from coming into contact with corrosive components. Specifically, the outer surface of the metal tube may be subjected to a ceramic coating treatment. For example, a coating layer (ceramic layer) is formed on a metal tube by kneading a ceramic powder and water, applying or spraying (thickness 0.5 to 10 mm) on the outer surface of the metal tube, and drying and firing. In addition, as a metal which comprises a carbonized pipe, low alloy steel, stainless steel, a nickel alloy, a chromium alloy, a nickel-chromium alloy, etc. are mentioned as an example, As an example, alumina, zirconia etc. are mentioned as a ceramic. . In addition, when a metal carbonized pipe is used, the metal has a problem that the material strength is reduced and the material is corroded under a temperature condition exceeding 500 ° C., though the material is different.
Therefore, the above problem can be solved to some extent by using ceramics instead of metal. That is, ceramic carbonized pipe (casing)
Is applied to an activated carbonization furnace. In addition, as ceramics,
As an example, alumina, silicon carbide, silicon nitride, or the like is used. In addition, from the viewpoint of securing a heat receiving area, the length of the carbonized pipe ranges from several meters to 10 m when the size thereof is increased. Therefore, a large bending moment is applied to the carbonized pipe by its own weight (proportional to the square of the length). Therefore, as shown in FIG.
A support member 36 is provided substantially below the central portion in the longitudinal direction of the refractory material so as to penetrate the refractory material wall 26 of the activated carbonization furnace 18 to reduce the bending moment. In this case, the activated carbonization furnace 1
8 is a high-temperature atmosphere condition, in order to secure the strength of the support member 36, the carbonized
It is desirable to support. In addition, as a means for cooling the support member 36, an air-cooled tube or the like can be used other than the water-cooled tube. 38 is a partition member (baffle).

As shown in FIG. 1, an air supply pipe 40 is connected near the inlet of the carbonized pipe 12a to supply air into the carbonized pipe, so that unburned matter and air in the pipe undergo a combustion reaction (heat generation). However, the temperature in the carbonized pipe can be significantly increased (exceeding the gas temperature outside the pipe), and an appropriate carbonized temperature can be obtained.
It is also desirable to supply air to the inlet of the second stage carbonized pipe. However, when the surface of the carbide is burned, the pores are broken, so that it is impossible to supply air unnecessarily. Further, by providing the air inlets 42 in the activated carbonization furnace 18 in multiple stages, it is possible to control the temperature in the carbonization furnace (external gas temperature). Out-of-tube gas temperature is determined by the amount of carbonized raw material supplied to the activated carbonization furnace, the amount of combustion air, and the heat transfer to the carbonized pipe. By supplying air in multiple stages and changing the amount of combustion air in the upper and lower stages,
It is possible to suppress the heat generation in the front part and increase the heat generation in the rear part, so that the outside-tube gas temperature in the rear part can be increased. Also, as a means of improving the performance of activated carbide,
There is an activation reaction of carbide by steam. As the steam supply means, there is direct supply of steam together with addition of water to the carbonized raw material. However, the addition of water is limited in terms of the supply stability of the carbide raw material (supply of water with a screw conveyor becomes difficult if the amount of water increases). Therefore, as shown in FIG. 1, a steam supply pipe 44 is connected to the vicinity of the inlet of the carbonized pipe 12a to supply the carbonized raw material and to convert the steam into the carbonized pipe 12a.
By direct supply to the inside, the water vapor concentration can be adjusted to the optimum concentration, and the activation reaction of carbide by the water vapor in the subsequent stage can be controlled.

Further, by adjusting the motor rotation speed of a raw material supply device (rotary valve in FIG. 1) such as a rotary valve or a screw conveyor, the temperature of the carbonization furnace product can be adjusted to the raw material condition and / or carbide use. Adjustments can be made to the optimal conditions accordingly. Further, the carbonized pipe 12a (12
By adjusting the rotation speed of the motor 46 of the screw conveyor 10a (10b) in b), that is, by adjusting the rotation speed of the screw in the carbonized pipe, the residence time of the carbide in the furnace can be adjusted. (Residence time is proportional to pipe length / (screw pitch × number of rotations)). As a rotation speed adjusting means, adoption of an inverter motor or incorporating a continuously variable transmission is a general method. When the carbonized pipe is installed in a plurality of stages, the screw rotation speed of each stage can be set independently. Also,
It is desirable that the rotation speeds of both the raw material supply device (such as a rotary valve and a screw conveyor) and the screw conveyor in the carbonized pipe be variable. For example, to make the properties of activated carbide suitable for dioxin adsorption,
It is a necessary condition for performing the high-temperature treatment to reduce the residual amount of the volatile matter in order to prevent ignition and fire in the bag filter.
In the case of a deodorant, there is no restriction on the remaining amount of volatile components, and the influence of the temperature level is small. As described above, since carbide production conditions such as temperature conditions and residence time conditions vary depending on the use of the activated carbide, it is important to have an adjusting means for changing the rotation speed of the raw material supply device and the screw conveyor.

As a screw of the screw conveyor provided in the carbonized pipe, a ribbon-type screw as shown in FIG. 3 is desirable. A normal screw conveyor is
Although suitable as a means of transferring solid particles, it is not suitable for the present application where gas is generated in the tube. In the carbonized pipe,
When 50-90% by weight of the feedstock evaporates (gasifies), the volume expands 1000-2000 times. With particles alone, the residence time in the tube is 30 minutes to 1 hour, but the gas is only a short time within a few seconds. When the particles are entrained in the gas flowing out at a high speed, the residence time of the particles becomes extremely short, and the carbide cannot maintain a predetermined performance (for example, adsorption ability). In order to avoid this, the screw of the screw conveyor in the carbonized pipe is changed as shown in FIG.
A ribbon-type screw 54 composed of a screw blade 52 attached with a gap 50 provided around the screw shaft 48
It is desirable that 56 is an attachment member. In a ribbon-type screw conveyor, particles are transported by a screw, and gas blows through a hole provided around the screw axis. This can prevent the residence time from being shortened due to the particles being entrained in the gas. In this case, a conceptually important point is to maximally separate the gas and the particles, and a screw other than a ribbon type screw may be used as long as a gas flow passage is provided. The residence time of the gas is
Assuming a constant pipe temperature and a uniform flow velocity, it is expressed by the following equation. Volume of carbonized pipe / (amount of generated gas × absolute temperature)
By providing 8, gas and particles can be separated. If not separated, the ash accompanying the pyrolysis gas will accumulate in other low-velocity portions in the carbonization furnace, causing a high possibility that the flow path will be blocked and the operation will be disabled. Specifically, the blockage increases the pressure inside the carbonized pipe, causing pyrolysis gas to blow out from the raw material inlet, and preventing the activation reaction from being prevented by the inflow of steam into the downstream side of the blockage point. cause.

Further, the discharge device for discharging the activated carbide produced by the carbonized pipe to the outside of the system should have a structure for lowering the temperature of the carbide, and should not emit the pyrolysis gas or inflow of outside air. A requirement is to have a structure.
That is, if the carbide at 600 to 800 ° C. is discharged out of the system at a high temperature, the carbide will burn when exposed to the outside air.
℃ or below). Therefore, as shown in FIG. 1, the activated carbide discharge device 32 is configured as an inclined conveyor, and the outer peripheral portion of the inclined conveyor is covered with a water-cooling jacket 60 so that the carbide temperature is reduced during passage through the conveyor. Further, in order to have a structure in which the pyrolysis gas is not ejected or the outside air does not flow, specifically, an activated carbide discharging device (inclined conveyor) from the carbide extracting pipe 30.
By filling the conveyor part of 32 with carbide powder,
It is configured to realize a material seal. Note that the conveyor shaft of the inclined conveyor does not move carbides, but rotates and rotates to prevent clogging of the powder and cool the powder.
It is just to stir. At the exit of the conveyor, carbide is discharged by overflow. Further, in order to prevent gas from blowing through the inside of the conveyor, it is desirable to increase the storage thickness of the powder (at least 1.0 m). Further, a small amount of ash is contained in the pyrolysis gas. If the pyrolysis gas extracted from the extraction pipe 58 is finally introduced into the activated carbonization furnace 18 and burned and used as a heat source, the activated carbonization furnace 18 Ash gradually accumulates at the bottom. If this is left untreated, the furnace bottom will eventually be buried in the ash, making it difficult to continue operation.
Therefore, as shown in FIG.
Ash discharge device (Dry screw conveyor in Fig. 4)
By attaching 64, the above problem can be solved. In addition, as the ash discharge device 64, a water-sealed conveyor or the like can be used in addition to the dry screw conveyor. The furnace bottom 62 is configured to be inclined downward toward the unloading device 64. Further, as a minimum facility for discharging the ash accumulated at the furnace bottom, an ash outlet for scraping out the ash accumulated at the furnace bottom as a maintenance at the time of an operation stop may be provided.

As described above, in order to completely separate the particles and the pyrolysis gas, the extraction pipe 58 for the pyrolysis gas is provided directly above the carbonized pipe 12b. Then, as shown in FIG. 1, after the pyrolysis gas extracted from the extraction pipe 58 is introduced into the washing scrubber 66 to separate heavy metals (mainly mercury), the pyrolysis gas is provided below the activated carbonization furnace 18. The fuel is introduced into the burner 24 (or its vicinity) and burned, so that the carbonized pipes 12a and 12b are used as a heat source for heating. 68 is a heavy metal separating means, and 70 is a cooling means.

FIG. 5 shows a schematic configuration of an apparatus for performing a method for producing activated carbide according to a second embodiment of the present invention. In this embodiment, an ash dechlorination pipe is provided in a carbonization furnace separately from a carbonization pipe, and an activated carbonization furnace for producing activated carbide is provided with a ash reduction detoxification (dechlorination) treatment function. It is added. As shown in FIG. 5, in the present embodiment, as an example, two stages of carbonized pipes are installed, and carbonized pipes 12a and 12b provided with screw conveyors 10a and 10b therein are connected by a communication pipe 14 for combustion. Furnace 1
6 and constitutes an activated carbonization furnace 72. In the activated carbonization furnace 72, a dechlorination pipe is installed separately from the carbonization pipe (in the present embodiment, as an example, two stages), and a dechlorination pipe provided with screw conveyors 74a and 74b therein, respectively. 76 a and 76 b are connected by a communication pipe 78. In addition, it is of course possible to adopt a configuration in which the carbonized pipe and the dechlorination pipe are arranged in three or more stages, or a configuration in which only one stage is arranged. The carbonized raw material supplied into the carbonized pipe 12a from the raw material supply device (rotary valve in FIG. 5) 22 is stirred and transported by the screw conveyor 10a, enters the carbonized pipe 12b through the communication pipe 14, and enters the screw conveyor 10b. Is stirred and transported. The carbonized raw material is dried in the preceding stage by the indirect heating by the combustion gas of the burner 24 in the carbonized pipes 12a and 12b, carbonized in the middle stage, and the steam generated during the drying and the pyrolysis gas generated by the carbonization. Activation and activation are performed at a later stage.

At the inlet of the end of the dechlorination tube 76a, a hopper 80 for storing fly ash containing dioxins and the like and an ash supply device (in FIG. 5, as an example, a rotary valve) 82 are provided. Fly ash or the like supplied from 82 into the dechlorination tube 76a is stirred and transferred by the screw conveyor 74a, enters the dechlorination tube 76b through the communication tube 78, and is stirred and transferred by the screw conveyor 74b. . 84 is a motor. Fly ash and the like containing dioxins are heat-treated in the dechlorination tubes 76a and 76b, and the dioxins in the ash are dechlorinated to render the fly ash and the like harmless. Although not shown in FIG. 5, the inside of the combustion furnace 16 includes carbonized pipes 12a and 12b, a dechlorination pipe 76a,
By the baffle provided substantially horizontally on the side of 76b, the combustion gas of the burner 24 flows in a meandering manner while flowing in the longitudinal direction of the dechlorination pipe and the carbonization pipe from below to above. I have. Fly ash and the like from which dioxins are decomposed and detoxified are extracted from the end outlet of the dechlorination tube 76b, and are discharged out of the system by an ash discharging device (in FIG. 5, as an example, an inclined conveyor) 86. . 88 is an ash storage tank.

In this embodiment, an ash dechlorination tube is added to a carbonization furnace in addition to a carbonization tube, and both have almost the same structure, but carbonize an organic combustible material containing carbon. Temperature conditions and the like are different between a carbonized tube that produces activated carbide by an activation treatment and a dechlorination tube that decomposes and detoxifies dioxins by heat-treating fly ash containing dioxins. That is, the conditions for detoxifying (dechlorinating) ash (decomposition conditions for dioxins) are as follows. Atmosphere gas: reduced or low oxygen atmosphere (O ₂ <1%) Temperature: 400 to 600 ° C. (preferably about 400 ° C.) Residence time: 0.5 to 1.0 hour In this case, thermal decomposition generated in a carbonized tube By further passing the gas through the dechlorination tube, a reducing gas atmosphere (and a temperature condition of 400 to 600 ° C.) suitable for dechlorination of dioxins can be formed. Therefore, as shown in FIG.
The pyrolysis gas extracted from the extraction pipe 58 provided in the carbonized pipe 12b is supplied to the dechlorination pipe 76a via the pyrolysis gas conduit 90.
And the ash atmosphere in the dechlorination tubes 76a and 76b is set as a reducing gas atmosphere. Further, by providing the air inlets 42 in the activated carbonization furnace 72 in multiple stages, it is possible to control the temperature in the carbonization furnace (external gas temperature). That is, by supplying air in multiple stages and changing the amount of combustion air in the upper and lower stages, the carbonized tubes 12a and 12b and the dechlorinated tubes 76a and 76
The outside-tube gas temperature b can be controlled to the optimum temperature. For example, the outside gas temperature of the upper carbonized pipe can be 800 to 900 ° C suitable for carbonization, and the outside gas temperature of the lower dechlorination pipe can be 400 to 600 ° C suitable for dechlorination. Become. Also, the screw conveyors 74a, 7
The residence time can be adjusted by adjusting the number of rotations of the motor 84b.

The pyrolysis gas introduced into the dechlorination tube 76a is extracted from the pyrolysis gas extraction tube 92 provided in the dechlorination tube 76b, and introduced into the burner 24 (or its vicinity). Burn. In this manner, by burning the pyrolysis gas as a fuel with air supply, an atmosphere at a predetermined temperature can be formed. As described above, the pyrolysis gas generated in the production process of the activated carbide can be used as a fuel, and can be used as a heat source for heating the carbonized pipe and the dechlorination pipe. 2. Description of the Related Art In a conventionally known ash heat dechlorination facility, an electric heating method is often used, and heating by combustion gas is also possible. In this case, a commercially available fuel (a gas fuel such as natural gas or LPG, a liquid fuel such as kerosene, light oil or heavy oil, or a solid fuel such as coal, refuse, or sludge) is generally used. In the configuration of the present embodiment, in an activated carbonization furnace for producing activated carbides, the pyrolysis gas generated together with the activated carbides is burned and heated, so that dechlorination of fly ash containing dioxins is also performed. can do. Other configurations and operations are the same as those in the first embodiment, and in this embodiment, the configurations shown in FIGS. 1 to 4 can be adopted.

FIG. 6 shows a schematic configuration of an apparatus for implementing a method for producing activated carbide according to a third embodiment of the present invention. In this embodiment, an ash dechlorination pipe is provided in a carbonization furnace separately from a carbonization pipe, and an ash reduction detoxification (dechlorination) treatment function is added to an activated carbonization furnace for producing activated carbide. After injecting activated carbon into the waste incinerator exhaust gas to adsorb and remove dioxins in the exhaust gas, fly ash is separated from the exhaust gas and fly ash containing this dioxin is added to the carbonization furnace. Into a dechlorination tube for dechlorination treatment. As shown in FIG.
Carbonized pipes 12a and 12b provided with screw conveyors 10a and 10b therein are connected by a communication pipe 14 and installed in a combustion furnace 16 to constitute an activated carbonized furnace 72a. In the activated carbonization furnace 72a, a dechlorination pipe is provided separately from the carbonization pipe, and dechlorination pipes 76a and 76 having screw conveyors 74a and 74b respectively provided therein.
b is connected by a communication pipe 78.

The carbonized raw material supplied to the end inlet of the carbonized pipe 12a is dried in the carbonized pipes 12a and 12b at the preceding stage, carbonized at the middle stage, and generated by steam and carbonized generated during drying. Activation and activation are performed at a later stage by the pyrolysis gas thus obtained, and the activated pyrolysis gas is converted into activated carbide and discharged from the end outlet of the carbonized pipe 12b. This activated carbide is NOx,
SOx, dust, dioxins, heavy metals (mercury, etc.)
Is blown into the waste gas from a waste incinerator containing denitrification together with chemicals for denitration and desalination (ammonia, slaked lime, etc.), and the activated carbon removes dioxins and the like in the exhaust gas by adsorption. Exhaust gas into which activated carbide or the like has been blown is introduced into a dust collector 94 such as a bag filter, and the highly treated exhaust gas from which fly ash has been removed is discharged out of the system. Fly ash containing dioxins is sent to a dechlorination tube 76a. Supplied. Fly ash supplied to the end inlet of the dechlorination tube 76a is supplied to the dechlorination tubes 76a and 76b.
In the inside, the dioxins in the ash are dechlorinated, and fly ash and the like are rendered harmless. The detoxified ash is discharged from an end outlet of the dechlorination tube 76b. The pyrolysis gas extracted from the extraction pipe 58 provided in the carbonized pipe 12b is introduced into the dechlorination pipe 76a via the pyrolysis gas conduit 90, and the ash atmosphere in the dechlorination pipes 76a and 76b is reduced. A reducing gas atmosphere is used. The pyrolysis gas introduced into the dechlorination tube 76a was extracted from the pyrolysis gas extraction tube 92 provided in the dechlorination tube 76b, and introduced into the washing scrubber 66, where heavy metals (mainly mercury) were separated. Thereafter, the pyrolysis gas is introduced into a burner 24 (or in the vicinity thereof) provided below the activated carbonizing furnace 72a and burned. In the configuration of the present embodiment, in an activated carbon furnace for producing activated carbide, by burning and heating the pyrolysis gas generated together with the activated carbide, the exhaust gas from which the activated carbon is blown and dioxins are adsorbed and removed is removed. The dechlorination of the separated fly ash can be performed together. Other configurations and operations are the same as those in the first and second embodiments. In this embodiment, the configurations shown in FIGS. 1 to 5 can be employed.

[0033]

As described above, the present invention has the following effects. (1) By optimally adjusting the production conditions of activated carbide in a carbonization furnace according to the conditions of the raw materials and the use of activated carbide, etc., those suitable for adsorption and removal of polymers such as dioxins and deodorants Activated carbides having a wide range of application, such as those suitable as a material, can be produced. (2) By adding an ash dechlorination pipe separate from the carbonization pipe in the carbonization furnace, activated carbon produced in the carbonization furnace is blown into the exhaust gas to adsorb and remove dioxins in the gas and separate from the exhaust gas. The fly ash containing the dioxins thus obtained is introduced into a dechlorination tube and dechlorinated to decompose and detoxify the dioxins in the ash. (3) By improving the structure and operating conditions of the activated carbon furnace for producing activated carbide in various ways, it is possible not only to produce activated carbide having a wide range of application, but also to improve the performance of the activated carbon furnace and to improve the efficiency. It becomes possible to make a good system.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an apparatus for performing a method for producing an activated carbide according to a first embodiment of the present invention.

FIG. 2 is a schematic longitudinal sectional view showing a support structure of the carbonized pipe according to the first embodiment of the present invention.

FIG. 3 is an enlarged detailed view showing an example of a screw (ribbon type screw) of the screw conveyor according to the first embodiment of the present invention.

FIG. 4 is a schematic configuration diagram illustrating an example of a furnace bottom structure of the carbonization furnace according to the first embodiment of the present invention.

FIG. 5 is a schematic configuration diagram showing an apparatus for performing a method for producing an activated carbide according to a second embodiment of the present invention.

FIG. 6 is a schematic configuration diagram showing an apparatus for performing a method for producing an activated carbide according to a third embodiment of the present invention.

FIG. 7 is a graph for explaining the effects of the material supply amount, the heat transfer area, the outside gas temperature, and the material supply temperature on the activated carbide temperature, and shows the relationship between the heat transfer area / processing amount magnification and the dimensionless temperature. It is a graph shown.

FIG. 8 is a graph for explaining the effects of the material supply amount, the heat transfer area, the outside gas temperature, and the material supply temperature on the activated carbide temperature, and shows the relationship between the throughput ratio / heat transfer area and the dimensionless temperature. It is a graph shown.

[Explanation of symbols]

 10a, 10b, 74a, 74b Screw conveyor 12, 12a, 12b Carbonized pipe 14, 78 Communication pipe 16 Combustion furnace 18, 72, 72a Activated carbonized furnace 20, 80 Hopper 22 Raw material supply device 24 Burner 26 Refractory wall 28 Exhaust port 30 Carbide discharge pipe 32 Activated carbide discharge device 34 Activated carbide storage tank 36 Support member 38 Partition member 40 Air supply pipe 42 Air inlet 44 Steam supply pipe 46, 84 Motor 48 Screw shaft 50 Gap 52 Screw blade 54 Ribbon screw 56 Mounting member 58, 92 Extraction pipe of pyrolysis gas 60 Water cooling jacket 62 Furnace bottom 64 Ash discharge device 66 Rinse scrubber 68 Heavy metal separating means 70 Cooling means 76a, 76b Dechlorination pipe 82 Ash supply device 86 Ash discharge device 88 Ash storage tank 90 Pyrolysis gas conduit 94 Dust collector

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B09B 5/00 C07D 319/24 4H012 C07B 35/06 C10B 53/00 A C07D 319/24 B09B 3/00 303L C10B 53/00 5/00 N (72) Inventor Tamaki Sakurai 1-3-1 Higashikawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries, Ltd. Kobe Head Office F-term (reference) 2E191 BA12 BB00 BD11 4D004 AA37 AB07 AC05 CA22 CA34 CB04 CB32 CB36 CB45 CB46 DA02 DA06 DA10 DA13 4G046 HA05 HA09 HC09 HC10 HC14 HC21 HC26 4G066 AA04B AA14D AC08A AC39A CA02 CA33 DA02 FA11 FA18 4H006 AA02 AC13 4H012 HA03 HA05

Claims (26)

[Claims] 1. A carbonization furnace is constructed by installing a carbonized pipe having a screw conveyor therein in a combustion furnace, wherein a drying step is performed at a stage preceding the carbonized tube, a carbonizing step is performed at a middle stage, and an activation step is performed at a latter stage. In this way, carbonized raw material, which is an organic combustible material containing carbon, is supplied into the carbonized pipe by a raw material supply device and subjected to indirect heat treatment, drying the carbonized raw material at the preceding stage of the carbonized pipe and generating steam, and generating In the middle stage, the dried product is carbonized and a pyrolysis gas is generated, and in the subsequent stage of the carbonization tube, the carbide is activated and activated by steam and pyrolysis gas to produce an activated carbide. After extracting the pyrolysis gas into a washing scrubber to separate heavy metals, the pyrolysis gas is introduced into a burner provided in the lower part of the carbonization furnace or in the vicinity thereof and burned. Manufacturing method of that activity carbide. 2. A carbonization furnace in which a carbonization pipe having a screw conveyor provided therein is installed in a combustion furnace, wherein a drying step is performed at a stage preceding the carbonization tube, a carbonization step is performed at a middle stage, and an activation step is performed at a latter stage. In the carbonization furnace, a dechlorination tube with a screw conveyor is installed inside the carbonization tube separately from the carbonization tube so that the dechlorination process is performed.The carbonization raw material, which is an organic combustible material containing carbon, is The raw material is supplied into the carbonized pipe by the raw material supply device and subjected to indirect heating treatment.The carbonized raw material is dried at the previous stage of the carbonized pipe, and steam is generated. In the latter part of the pipe, the carbide is activated and activated by steam and pyrolysis gas to produce an activated carbide, and ash containing dioxins is introduced into the dechlorination pipe added in the carbonization furnace and subjected to indirect heating treatment, Dechlorinate ash Method for producing active carbides characterized by degradation and detoxification of dioxins in the ash by treating. 3. A carbonization furnace in which a carbonized pipe having a screw conveyor provided therein is installed in a combustion furnace, wherein a drying step is performed at a stage preceding the carbonized tube, a carbonizing step is performed at a middle stage, and an activation step is performed at a latter stage. In the carbonization furnace, a dechlorination tube with a screw conveyor is installed inside the carbonization tube separately from the carbonization tube so that the dechlorination process is performed.The carbonization raw material, which is an organic combustible material containing carbon, is The raw material is supplied into the carbonized pipe by the raw material supply device and subjected to indirect heating treatment.The carbonized raw material is dried at the previous stage of the carbonized pipe, and steam is generated. In the latter part of the pipe, the carbide is activated and activated by steam and pyrolysis gas to produce activated carbide, and the fly ash separated from the exhaust gas from which the dioxin is adsorbed and removed by blowing the activated carbide is discharged into a carbonization furnace. The added by introducing the dechlorination tube indirectly heat treatment method of the active carbides characterized by degradation and detoxification of dioxins in the ash by treating dechlorination fly ash. 4. A pyrolysis gas is withdrawn immediately above the carbonized pipe at a stage subsequent to the carbonization pipe, and the extracted pyrolysis gas is introduced into a dechlorination pipe to make the inside of the pipe a reducing gas atmosphere suitable for dechlorination. The method for producing activated carbide according to claim 2 or 3, wherein the pyrolysis gas extracted from the furnace is introduced into a burner provided in the lower part of the carbonization furnace or in the vicinity thereof and burned. 5. A pyrolysis gas is withdrawn immediately above the carbonization pipe at a later stage, and the extracted pyrolysis gas is introduced into a dechlorination pipe to make the inside of the pipe a reducing gas atmosphere suitable for dechlorination. The activated carbide according to claim 2 or 3, wherein the pyrolysis gas extracted from the furnace is introduced into a washing scrubber to separate heavy metals, and then the pyrolysis gas is introduced into a burner provided below the carbonization furnace or in the vicinity thereof and burned. Manufacturing method. 6. The method for producing an activated carbide according to claim 1, wherein air is supplied into the carbonized pipe to increase the temperature in the pipe. 7. The method for producing activated carbide according to claim 1, wherein a plurality of air inlets are provided in the carbonization furnace, and the temperature of the gas outside the tube in the carbonization furnace is controlled by the air supply amount. . 8. The method for producing an activated carbide according to claim 1, wherein steam is directly supplied into the carbonized pipe near the inlet of the carbonized pipe to promote the activation reaction of the carbide by the steam in the subsequent stage. 9. Adjusting the number of rotations of the motor of the raw material supply device,
The method for producing an activated carbide according to any one of claims 1 to 8, wherein the temperature of the product of the carbonization furnace in the carbonization pipe is adjusted by the supply amount of the carbonization raw material. 10. The method for producing an activated carbide according to claim 1, wherein the residence time of the carbide in the furnace is adjusted by adjusting the number of revolutions of the screw conveyor in the carbonized pipe. 11. The activated carbide according to claim 1, wherein at least one of sewage sludge, coal, refuse gasification char, and RDF is used alone or as a mixture as a carbonization raw material for producing the activated carbide. Manufacturing method. 12. A mixed material of sewage sludge and coal is used as a raw material for producing activated carbide.
The method for producing an activated carbide according to any one of the above. 13. A carbonization tube having a screw conveyor provided therein is installed in a combustion furnace, and a carbonization furnace is configured such that a former stage of the carbonization tube is a drying zone, a middle stage is a carbonization zone, and a latter stage is an activation zone. A burner is provided below, a raw material supply device is provided at the end inlet of the carbonized pipe, and an activated carbide discharge device is provided at the end outlet of the carbonized pipe, and the carbonized raw material supplied from the raw material supply device is supplied inside the carbonized pipe. After being subjected to indirect heating, drying and generation of steam in the former stage, carbonization and generation of pyrolysis gas in the middle stage, and activation and activation by steam and pyrolysis gas in the latter stage, become activated carbide, and the activated carbon is formed from the carbonized pipe. It is designed to be discharged by a discharge device, and a pipe for extracting pyrolysis gas is connected immediately above the carbonized pipe, and the pipe is connected to the washing scrubber. An apparatus for producing activated carbide, characterized in that an outlet is connected to a burner or its vicinity so that a pyrolysis gas from which heavy metals have been separated and removed is burned by the burner. 14. A carbonization furnace having a screw conveyor provided therein and installed in a combustion furnace, wherein a carbonization furnace is configured with a drying zone at a former stage of the carbonization tube, a carbonization zone at a middle stage, and an activation zone at a latter stage of the carbonization tube. A raw material supply device is provided at the inlet of the section, and an activated carbide discharge device is provided at the end exit of the carbonized pipe.The carbonized raw material supplied from the raw material supply apparatus is subjected to indirect heat treatment in the carbonized pipe, and drying and Activated carbide is generated by steam generation, carbonization and pyrolysis gas generation in the middle stage, and activation and activation by steam and pyrolysis gas in the subsequent stage, and is discharged from the carbonization pipe by the active carbide discharge device. A dechlorination pipe with a screw conveyor inside the carbonization furnace is provided separately from the carbonization furnace, and ash containing dioxins is introduced into the dechlorination pipe added inside the carbonization furnace. An activated carbon production apparatus characterized in that dioxins in the ash are decomposed and made harmless by being introduced, subjected to indirect heat treatment, and dechlorinating the ash. 15. The activated carbide production apparatus according to claim 14, wherein a pyrolysis gas extraction pipe is connected immediately above the carbonization pipe. 16. The activated carbon production apparatus according to claim 14, wherein a pyrolysis gas extraction pipe is connected immediately above the carbonization pipe, and the pyrolysis gas extraction pipe is connected to a dechlorination pipe. 17. A pyrolysis gas extraction pipe is connected immediately above the carbonization pipe, a pyrolysis gas extraction pipe is connected to a dechlorination pipe, and a pyrolysis gas is formed downstream of the dechlorination pipe. 15. The activated carbide producing apparatus according to claim 14, wherein the extraction pipe is connected to the burner or the vicinity of the burner. 18. A pyrolysis gas extraction pipe is connected immediately above the carbonization pipe to the upper part thereof, the pyrolysis gas extraction pipe is connected to a dechlorination pipe, and a pyrolysis gas extraction pipe is connected to the dechlorination pipe. 2. A discharge scrubber is connected to the washing scrubber, and an outlet of the washing scrubber is connected to a burner or its vicinity.
4. An apparatus for producing activated carbide according to 4. 19. The carbonized pipe is formed by forming a ceramic coating layer on an outer surface of a metal pipe.
An apparatus for producing activated carbide according to any one of 3 to 18. 20. The activated carbide production apparatus according to claim 13, wherein the carbonized pipe is a ceramic carbonized pipe. 21. A lower portion of a substantially central portion in the longitudinal direction of the carbonized pipe,
21. The activated carbide manufacturing apparatus according to claim 13, further comprising a support member for reducing a bending moment of the carbonized pipe due to its own weight. 22. The activated carbide production apparatus according to claim 21, wherein the support member is a water-cooled pipe or an air-cooled pipe provided substantially horizontally so as to penetrate the carbonization furnace. 23. The screw of the screw conveyor provided in the carbonized pipe is a ribbon-type screw having a flow path through which gas flows through around the screw axis.
An apparatus for producing activated carbide according to any of 3 to 22. 24. The activated carbide producing apparatus according to claim 13, wherein the activated carbide discharging device is an inclined conveyor having a water cooling jacket structure on the outer periphery of the conveyor. 25. Activated carbide powder is provided so that a carbide discharge pipe for extracting activated carbide from the carbonized pipe and a conveyor portion of the inclined conveyor connected to the carbide discharge pipe do not emit thermal decomposition gas and inflow of outside air. 25. The activated carbon manufacturing apparatus according to claim 24, wherein the activated carbon is filled with the body, and the activated carbide is discharged from the conveyor outlet of the inclined conveyor by overflow. 26. The activated carbon production apparatus according to claim 13, wherein an ash discharge device is attached to a bottom of the carbonization furnace, or an ash discharge port is provided.