CN217094973U - Waste treatment system - Google Patents

Abstract

A waste treatment system is provided, which can easily carry in waste into a heating furnace, recover waste after heating treatment and carry out waste after heating treatment from the heating furnace even when heating treatment for making chemical agent harmless is carried out on a large amount of waste. A waste treatment system (1) is provided with: a heating furnace (13) for heating the waste; a heat-resistant container (10) for heat treatment for storing waste; a trolley (15) that is self-moving in the following manner: the container (10) for heat treatment loaded with the waste accommodated therein enters the heating furnace (13), remains in the heating furnace (13) during the treatment time of the heat treatment in the heating furnace (13), and is withdrawn from the heating furnace (13) in a state in which the container (10) for heat treatment is loaded after the treatment time has elapsed.

Description

Waste treatment system

Technical Field

The utility model relates to a waste treatment system.

Background

Conventionally, there has been known a waste treatment system for heat-treating waste containing a chemical agent, for example, residues (fragments and dust of a cartridge case) left after blasting of chemical ammunition, in such a manner that the chemical agent contained in the waste is made harmless. Patent document 1 listed below discloses a detoxifying device as an example of such a waste treatment system.

The detoxifying device disclosed in patent document 1 is a device for detoxifying a chemical agent by heating blasting residues left over by chemical ammunition after blasting to a high temperature, and includes a heating furnace for heating the blasting residues to a high temperature inside the heating furnace, and a gas treatment device for treating exhaust gas discharged from the heating furnace.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2016-109335

The heating furnace used in the detoxifying device disclosed in patent document 1 is a small electric furnace, and the amount of waste that can be heat-treated at one time is not large, so that when a large amount of waste is heat-treated, it is necessary to heat-treat the waste a plurality of times. Therefore, the loading of the waste into the heating furnace and the unloading of the waste after the heat treatment from the heating furnace are performed a plurality of times, and the operations for the loading and unloading become very complicated.

In a heating furnace generally used as an annealing furnace, a material to be treated is generally placed directly on a susceptor made of a refractory material provided inside the furnace and subjected to a heating treatment. Therefore, if a waste containing a large amount of fragments of the cartridge case and dust such as the blasting residue is subjected to a heat treatment as a treatment object in such a heating furnace, the work of collecting and collecting the waste after the heat treatment from the susceptor in the heating furnace becomes very complicated.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a waste disposal system that can easily carry out the heat treatment for detoxifying a chemical agent even when the heat treatment is performed on a large amount of waste, the waste after the heat treatment is carried into a heating furnace, the waste after the heat treatment is recovered, and the waste after the heat treatment is carried out from the heating furnace.

The waste treatment system provided by the utility model is a system for heating the waste in a mode of making the chemical agent contained in the waste harmless. The waste treatment system comprises: a heating furnace for heating the waste; at least 1 heat-resistant container for heat treatment for storing the waste; a trolley that is self-moving in the following manner: the container for heat treatment containing the waste is loaded into the heating furnace, left in the heating furnace during the treatment time of the heat treatment in the heating furnace, and is withdrawn from the heating furnace with the container for heat treatment loaded after the treatment time.

In this waste treatment system, since the carriage is self-movable, the waste contained in the heat treatment container mounted on the carriage can be carried into the heating furnace, and the waste after the heat treatment can be carried out from the heating furnace, even when the heat treatment for detoxifying the chemical agent is performed on a large amount of waste, the waste can be easily carried into the heating furnace and the waste after the heat treatment can be carried out from the heating furnace. In this waste treatment system, the waste is heat-treated in the heating furnace in a state of being accommodated in the heat treatment container, and therefore, even when a large amount of chips and dust are contained in the waste, the waste after the heat treatment can be carried out of the heating furnace together with the heat treatment container without collecting the waste after the heat treatment. Therefore, the waste after the heat treatment can be easily collected. In addition, in the heat treatment for making the chemical agent harmless, the waste is heated to a very high temperature, but if such heat treatment is performed in a state where the waste is contained in a container having low heat resistance, the container is deformed by heat, and it becomes difficult to take out the waste after the heat treatment from the container, and there is a possibility that it becomes difficult to recover the waste after the heat treatment. In contrast, in this waste treatment system, since the container in which the waste is heat-treated in the heating furnace is a heat-resistant container for heat treatment, it is possible to suppress deformation of the container for heat treatment due to heat of high-temperature heat treatment for making the chemical agent harmless. Therefore, the waste after the heat treatment can be easily taken out from the heat treatment container, and the waste after the heat treatment can be easily collected.

Preferably, the structure is as follows: the at least 1 heat treatment container includes a 1 st heat treatment container and a 2 nd heat treatment container, and the 1 st and 2 nd heat treatment containers each have: a waste tray serving as a portion for receiving the waste in the container for heat treatment; a frame configured to surround the waste tray and fixed to the waste tray, wherein the frames of the 1 st and 2 nd heat treatment containers are configured to be capable of being stacked on top of each other with a gap formed between the waste trays of the 1 st and 2 nd heat treatment containers, the carriage is configured to be capable of self-moving while the 1 st and 2 nd heat treatment containers stacked on each other are loaded, and the heating furnace is configured to be capable of receiving the carriage on which the 1 st and 2 nd heat treatment containers stacked on each other are loaded.

According to this configuration, the 1 st and 2 nd containers for heat treatment, which carry waste on the respective waste trays, can be stacked, and the 1 st and 2 nd containers for heat treatment can be carried on the carriage and carried into the heating furnace with a gap formed between the waste trays, and heat treatment can be performed. Therefore, in the heat treatment in the heating furnace, the hot air flows between the waste trays of the 1 st and 2 nd heat treatment containers in a state of being overlapped with each other, and as a result, the waste loaded on each of the waste trays of the heat treatment containers can be effectively heat-treated.

Preferably, the waste treatment system further includes a coupling member that couples the frames of the 1 st and 2 nd heat treatment vessels to each other so as to prevent the frames from being separated from each other in a state where the frames are overlapped with each other.

According to this configuration, the heating furnace can be installed on an installation surface (for example, a semi-underground floor surface) at a position lower than the first floor surface of the building accommodating the heating furnace to reduce the height of the building, thereby reducing the construction cost of the building, and the 1 st and 2 nd heat treatment containers in a stacked state can be loaded from the first floor surface by a forklift on a carriage installed on the installation surface together with the heating furnace and at a position lower than the first floor surface. Specifically, since the height of the heating furnace capable of receiving the carriage on which the 1 st and 2 nd heat treatment containers in a superimposed state are mounted inevitably increases and a space for maintenance needs to be secured above the heating furnace, when the heating furnace is installed on the floor of one floor of a building, the building height inevitably increases and the construction cost of the building increases. Further, according to this configuration, the forklift can lift the upper heat treatment vessel among the 1 st and 2 nd heat treatment vessels in a state of being superposed on the single-story floor surface, thereby lifting the lower heat treatment vessel connected to the upper heat treatment vessel, and the 1 st and 2 nd heat treatment vessels in a superposed state can be loaded on the bogie at a position lower than the single-story floor surface from the single-story floor surface without lowering the fork blade to a position lower than the single-story floor surface.

Preferably, the waste tray has a receiving surface as a surface for receiving the waste, and the receiving surface has a shape which is curved so as to be convex downward with decreasing height from a peripheral portion to a central portion thereof.

According to this configuration, the waste after the heat treatment loaded on the waste tray can be easily taken out without leaving any residue. For example, if the receiving surface of the waste receiving portion of the heat treatment container has a bent portion so as to form a corner portion, the waste remains at the corner portion when the waste after the heat treatment is taken out, and it is difficult to take out the waste after the heat treatment without remaining. In contrast, in the present configuration, since the receiving surface of the waste tray serving as a portion for receiving waste in the heat treatment container has a shape that is curved so as to be convex downward with a height decreasing from the peripheral portion to the central portion thereof, no corner portion is formed, and such waste does not remain in the corner portion. Therefore, the waste after the heat treatment loaded on the waste tray can be easily taken out without leaving any residue.

Preferably, the waste treatment system further includes a pre-treatment transfer device that transfers the pre-treatment waste to the heat treatment container from a pre-treatment waste container that contains the pre-treatment waste before heat treatment and has lower heat resistance than the heat treatment container.

According to this configuration, even when the pre-treatment waste container that accommodates the pre-treatment waste supplied to the waste treatment system has low heat resistance, the pre-treatment waste can be transferred from the pre-treatment waste container to a heating treatment container having higher heat resistance by the pre-treatment transfer device, and thus deformation of the container due to heat can be avoided when the waste is heat-treated together with the container in the heating furnace.

Preferably, the pre-treatment transfer device includes: a pre-treatment waste discharge device for discharging the pre-treatment waste from the pre-treatment waste container at a position higher than the heating treatment container; a pre-treatment waste chute that receives the pre-treatment waste released from the pre-treatment waste container by the pre-treatment waste release device and directs it to the heat treatment container; a pre-treatment waste gate provided at an outlet of the pre-treatment waste chute, the pre-treatment waste gate being configured to be able to obtain: a pre-treatment chute outlet blocked condition blocking the pre-treatment waste chute outlet in a manner that prevents the pre-treatment waste that has passed through and fallen within the pre-treatment waste chute from being released from the pre-treatment waste chute outlet; and a pre-treatment chute outlet open state opening the outlet of the pre-treatment waste chute in a manner allowing the pre-treatment waste to be released from the outlet of the pre-treatment waste chute.

According to this configuration, when the pre-treatment waste is transferred from the pre-treatment waste container to the heat treatment container, it is possible to prevent the powdery material contained in the pre-treatment waste from scattering, or the pre-treatment waste that has entered the heat treatment container from flying out of the heat treatment container due to a tendency of falling, and as a result, it is possible to prevent the contamination of the surrounding environment by the pre-treatment waste from increasing. For example, when the pre-treatment waste discharged from the pre-treatment waste container into the pre-treatment waste chute and falling down in the pre-treatment waste chute is discharged from the outlet of the pre-treatment waste chute in this trend state, there is a possibility that the powdery material contained in the pre-treatment waste may scatter, or the pre-treatment waste may fly out of the heat treatment container even if it has entered the heat treatment container in this trend. In contrast, in the present configuration, the pre-treatment waste gate is provided at the outlet of the pre-treatment waste chute so as to be configured to be able to take the following state: a pre-treatment chute outlet blocked state in which pre-treatment waste that has passed through and fallen down within the pre-treatment waste chute is blocked from being released from the outlet of the pre-treatment waste chute; and a pre-treatment chute outlet open state in which the pre-treatment waste chute outlet is opened to allow the pre-treatment waste to be released from the pre-treatment waste chute outlet, so that when the pre-treatment waste falls down in the pre-treatment waste chute, the pre-treatment waste gate is brought into a pre-treatment chute outlet closed state to block the pre-treatment waste chute outlet, thereby suppressing the tendency of the pre-treatment waste to fall down, and thereafter, the pre-treatment waste gate is switched to the pre-treatment chute outlet open state, whereby the pre-treatment waste deposited in the pre-treatment waste chute near the pre-treatment waste chute outlet is released from the pre-treatment waste chute outlet with a gentle tendency and introduced into the heat treatment container. Therefore, when the pre-treatment waste is transferred from the pre-treatment waste container to the heat treatment container, it is possible to prevent the powdery material contained in the pre-treatment waste from scattering, or the pre-treatment waste that has entered the heat treatment container from flying out of the heat treatment container due to a tendency of falling.

Preferably, the waste treatment system further includes a post-treatment transfer device for transferring the treated waste, which is the waste after the heat treatment, from the heat treatment container to a treated waste container, the post-treatment transfer device including: a post-treatment waste dropping device that takes out the post-treatment waste from the heat treatment container and drops the post-treatment waste from a position higher than the post-treatment waste container; a post-treatment waste chute that receives the post-treatment waste dropped through the post-treatment waste drop apparatus and directs the post-treatment waste to the post-treatment waste container; a post-treatment waste gate provided at an outlet of the post-treatment waste chute, the post-treatment waste gate being configured to be able to obtain: a post-treatment chute outlet blocked condition blocking the outlet of the post-treatment waste chute in a manner that prevents the post-treatment waste that has passed through and fallen down within the post-treatment waste chute from being released from the outlet of the post-treatment waste chute; and a post-treatment chute outlet open state to open the outlet of the post-treatment waste chute in a manner to allow the post-treatment waste to be released from the outlet of the post-treatment waste chute.

According to this configuration, when the processed waste is transferred from the heat treatment container to the processed waste container, it is possible to prevent the powder contained in the processed waste from scattering or prevent the storage bag placed in the processed waste container from being damaged due to the falling tendency of the processed waste. For example, when the processed waste falling down in the processed waste chute is discharged from the outlet of the processed waste chute in a state of such tendency, there is a possibility that powder contained in the processed waste may scatter, or the processed waste may fly into a storage bag provided in the processed waste container in a state of such tendency as falling down and the storage bag may be damaged. In contrast, in the present configuration, a post-treatment waste gate configured to be able to take the following state is provided at the outlet of the post-treatment waste chute: a post-treatment chute outlet blocked state in which the post-treatment waste that has passed through and fallen down in the post-treatment waste chute is blocked in such a manner as to prevent the post-treatment waste from being released from the outlet of the post-treatment waste chute; and a post-treatment chute outlet open state in which the outlet of the post-treatment waste chute is opened so as to allow the post-treatment waste to be released therefrom, so that when the post-treatment waste falls down in the post-treatment waste chute, the post-treatment waste gate can be brought into a post-treatment chute outlet closed state to block the outlet of the post-treatment waste chute, thereby stopping the tendency of the post-treatment waste to fall down, and thereafter, the post-treatment waste gate is switched to the post-treatment chute outlet open state, whereby the post-treatment waste deposited in the post-treatment waste chute in the vicinity of the outlet is released from the outlet of the post-treatment waste chute with a gentle tendency and introduced into the post-treatment waste container. Therefore, when the processed waste is transferred from the heat treatment container to the processed waste container, it is possible to prevent the powder contained in the processed waste from scattering or prevent the storage bag provided in the processed waste container from being damaged due to the falling tendency of the processed waste.

Preferably, the post-treatment transfer apparatus further includes a lifting device configured to support the post-treatment waste container below the outlet of the post-treatment waste chute and to be capable of vertically lifting the post-treatment waste container supported by the lifting device.

According to this configuration, when the processed waste is discharged from the outlet of the processed waste chute and introduced into the processed waste container, it is possible to more reliably prevent the powder contained in the processed waste from scattering, or prevent the storage bag provided in the processed waste container from being damaged by the falling tendency of the processed waste. Specifically, when the processed waste is discharged from the outlet of the processed waste chute, the processed waste container is lifted by the lifting device and brought close to the outlet of the processed waste chute, whereby the powder contained in the processed waste can be more surely prevented from scattering from the gap between the outlet of the processed waste chute and the processed waste container, the tendency of the processed waste to fall into the processed waste container can be reduced, and the housing bag can be more surely prevented from being damaged.

The waste treatment method provided by the utility model is a waste treatment method for heating the waste in a mode of making the chemical agent contained in the waste harmless. The waste treatment method comprises the following steps: a pre-treatment waste transfer step of transferring the waste from a pre-treatment waste container containing the waste before heat treatment to a heat treatment container having higher heat resistance than the pre-treatment waste container; a loading step of loading the container for heat treatment containing the waste in the pre-treatment waste transfer step on a cart; a carrying-in step of carrying the container for heat treatment containing the waste into a heating furnace by the carriage moving into the heating furnace; a heat treatment step of performing heat treatment on the waste contained in the heat treatment container carried into the heating furnace together with the heat treatment container; and a carrying-out step of carrying out the heat treatment container containing the heat-treated waste from the heating furnace by the carriage moving by itself and retreating from the heating furnace after a treatment time of the heat treatment in the heating furnace.

In this waste treatment method, since the waste contained in the heat treatment container mounted on the carriage can be carried into the heating furnace by the carriage moving by itself and the waste after the heat treatment can be carried out from the heating furnace, even when the heat treatment for making the chemical agent harmless is performed on a large amount of waste, the waste can be carried into the heating furnace and the waste after the heat treatment can be carried out from the heating furnace easily. In the waste treatment method, the waste contained in the heat treatment container is subjected to heat treatment together with the heat treatment container in the heat treatment step, and therefore, even when the waste contains a large amount of chips and dust, the waste after heat treatment can be carried out of the heating furnace together with the heat treatment container without collecting the waste after heat treatment. Therefore, the waste after the heat treatment can be easily collected. In addition, in this waste treatment method, the waste is transferred from the pre-treatment waste container to a heat treatment container having higher heat resistance than the pre-treatment waste container, and the waste contained in the heat treatment container is subjected to heat treatment together with the heat treatment container, so that the heat treatment container can be prevented from being deformed by heat of high-temperature heat treatment for detoxifying the chemical agent. Therefore, the waste after the heat treatment can be easily taken out from the heat treatment container, and the waste after the heat treatment can be easily collected.

Preferably, the pre-treatment waste transfer step includes the steps of: a pre-treatment waste throwing step of throwing the pre-treatment waste discharged from the pre-treatment waste container into a pre-treatment waste chute so that the waste falls down in the pre-treatment waste chute, in a state where an outlet of the pre-treatment waste chute, which is disposed at a position higher than the pre-treatment container and passes through the inside of the pre-treatment waste chute to guide the pre-treatment waste to the pre-treatment container, is closed; a pre-treatment waste introducing step of, after the pre-treatment waste throwing step, opening the outlet of the pre-treatment waste chute to release the pre-heat-treatment waste accumulated in the pre-treatment waste chute by blocking the outlet of the pre-treatment waste chute from the outlet and introduce the pre-heat-treatment waste into the heat treatment container.

In this way, when the waste before the heat treatment is transferred from the waste container before the heat treatment to the container for the heat treatment, it is possible to prevent the powdery material contained in the waste from scattering due to the falling tendency of the waste, or the waste before the heat treatment which has entered the container for the heat treatment from falling out of the container for the heat treatment, and as a result, it is possible to prevent the waste before the heat treatment from polluting the surrounding environment. Specifically, in the pre-treatment waste throwing step, the pre-heat treatment waste discharged from the pre-treatment waste container is thrown into the pre-treatment waste chute in a state where the outlet of the pre-treatment waste chute is closed, so that the waste falls down in the pre-treatment waste chute, and therefore, the waste can be deposited in the vicinity of the outlet in the pre-treatment waste chute by stopping the tendency of the waste to fall at the outlet of the pre-treatment waste chute, and thereafter, the waste deposited in the pre-treatment waste chute can be discharged from the outlet of the pre-treatment waste chute into the heat treatment container with a gentle tendency by opening the outlet of the pre-treatment waste chute in the pre-treatment waste introducing step. Therefore, when the pre-treatment waste is transferred from the pre-treatment waste container to the heat treatment container, it is possible to prevent the powdery substances contained in the pre-treatment waste from scattering, or the pre-treatment waste having entered the heat treatment container from being thrown out of the heat treatment container due to a tendency of falling.

Preferably, the waste treatment method further comprises the steps of: a discharge step of discharging the heat treatment container, which contains the processed waste as the heat treated waste, from the cart after the carrying out step; a post-treatment waste transfer step of transferring the post-treatment waste from the heat treatment container detached from the carriage to a post-treatment waste container, the post-treatment waste transfer step further including the steps of: a post-treatment waste throwing step of throwing the post-treatment waste taken out from the heat treatment container detached from the carriage into a post-treatment waste chute in a state where an outlet of the post-treatment waste chute, which is disposed at a position higher than the post-treatment waste container and passes through the inside of the post-treatment waste container to guide the post-treatment waste to the post-treatment waste container, is blocked, so that the post-treatment waste falls down into the post-treatment waste chute; a post-treatment waste introducing step of, after the post-treatment waste throwing step, opening the outlet of the post-treatment waste chute, thereby releasing the post-treatment waste deposited in the post-treatment waste chute due to the outlet of the post-treatment waste chute being blocked, from the outlet, and introducing the post-treatment waste into the post-treatment waste container.

In this way, when the treated waste is transferred from the heat treatment container to the treated waste container, it is possible to prevent the powder contained in the treated waste from scattering due to the falling tendency of the treated waste, and to prevent the storage bag provided in the treated waste container from being damaged due to the falling tendency of the treated waste. Specifically, in the post-treatment waste throwing step, the post-treatment waste taken out from the heat treatment container is thrown into the post-treatment waste chute in a state in which the outlet of the post-treatment waste chute is closed, so that the post-treatment waste falls down in the post-treatment waste chute, and therefore, the post-treatment waste can be deposited in the vicinity of the outlet in the post-treatment waste chute by stopping the tendency of the post-treatment waste to fall down at the outlet of the post-treatment waste chute, and thereafter, the post-treatment waste deposited in the post-treatment waste chute can be released from the outlet of the post-treatment waste chute and introduced into the post-treatment waste container with a gentle tendency by opening the outlet of the post-treatment waste chute in the post-treatment waste introducing step. Therefore, when the processed waste is transferred from the heat treatment container to the processed waste container, it is possible to prevent the powder contained in the processed waste from scattering due to the tendency of the processed waste to fall or prevent the storage bag provided in the processed waste container from being damaged due to the tendency of the processed waste to fall.

Preferably, the post-treatment waste transfer step further includes a container approaching step of raising the post-treatment waste container to approach the outlet of the post-treatment waste chute before the post-treatment waste introducing step, and the post-treatment waste introducing step introduces the post-treatment waste discharged from the outlet of the post-treatment waste chute into the post-treatment waste container approaching the outlet of the post-treatment waste chute in the container approaching step, and the post-treatment waste transfer step further includes a container lowering step of lowering the post-treatment waste container accommodating the post-treatment waste after the post-treatment waste introducing step.

In this case, when the processed waste is discharged from the outlet of the processed waste chute and introduced into the processed waste container, it is possible to more reliably prevent the powder contained in the processed waste from scattering or prevent the storage bag provided in the processed waste container from being damaged by the tendency of the processed waste to fall. Specifically, the processed waste container is lifted up and brought close to the outlet of the processed waste chute in the container approaching step, and the processed waste discharged from the outlet of the processed waste chute is introduced into the processed waste container close to the outlet of the processed waste chute in the processed waste introducing step, so that the powder contained in the processed waste can be more reliably prevented from scattering from the gap between the outlet of the processed waste chute and the processed waste container, the tendency of the processed waste to fall into the processed waste container can be further reduced, and the storage bag can be more reliably prevented from being damaged.

As described above, according to the present invention, even when a large amount of waste is subjected to heat treatment for detoxifying a chemical agent, the waste can be easily carried into the heating furnace, the waste after the heat treatment can be easily recovered, and the waste after the heat treatment can be easily carried out from the heating furnace.

Drawings

Fig. 1 is a schematic view showing a process of transferring pre-treatment waste from a pre-treatment waste container to a heat treatment container in a waste treatment system and a process of transporting the heat treatment container containing the pre-treatment waste in one embodiment of the present invention.

Fig. 2 is a schematic view showing a process of loading a heat treatment container on a carriage of a waste treatment system, a process of carrying waste into a heating furnace by the carriage, a heat treatment in the heating furnace, a process of carrying the heat treated waste out of the heating furnace and into a cooling furnace by the carriage, a cooling process in the cooling furnace, a process of carrying the waste out of the cooling furnace by the carriage, and a process of unloading the heat treatment container from the carriage and carrying the heat treatment container.

Fig. 3 is a schematic view showing a process of transferring the processed waste from the heat treatment container to the processed waste container in the waste treatment system according to the embodiment of the present invention.

Fig. 4 is a front view showing a heat treatment container used in a waste treatment system according to an embodiment of the present invention.

Fig. 5 is a side view of the heat treatment container shown in fig. 4.

Fig. 6 is a plan view (top view) of the heat treatment container shown in fig. 4.

FIG. 7 is a cross-sectional view of the heat treatment vessel at the VII-VII position in FIG. 4.

Fig. 8 is a front view of the lower heat treatment vessel and the upper heat treatment vessel in a superimposed state.

Fig. 9 is a side view of the lower layer heat treatment vessel and the upper layer heat treatment vessel in a stacked state.

Fig. 10 is a front view showing a lower-stage heating treatment vessel and an upper-stage heating treatment vessel which are overlapped and connected to each other, and is a view showing a state when the upper-stage heating treatment vessel is lifted up.

Fig. 11 is a side view of a lower layer heating treatment vessel and an upper layer heating treatment vessel which are overlapped and connected to each other, and is a view showing a state when the upper layer heating treatment vessel is lifted up.

Description of the symbols

1 waste treatment system

6 transfer device before treatment

10 Container for heat treatment

10a Container for Heat treatment of lower layer

10b Container for heating the upper layer

13 heating furnace

15 trolley

16 post-treatment transfer device

23 device for releasing waste before treatment

24 chute for pre-treatment waste

25 before treatment waste gate

38 post-treatment waste falling device

40 chute for processed waste

42 post-treatment waste gate

43 lifting device

52 waste tray

52a bearing surface

54 frame

80 connecting rod (connecting component)

100 container for waste before treatment

101 post-treatment waste container

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

The waste treatment system 1 according to one embodiment of the present invention performs heat treatment on waste containing a chemical agent so that the chemical agent contained in the waste is harmless. Hereinafter, the waste treatment system 1 of the present embodiment is simply referred to as a treatment system 1. The waste treated by the treatment system 1 of the present embodiment is, for example, blasting residues including a large amount of crushed pieces of a hull, dust, and the like generated by blasting chemical ammunition. Examples of the chemical agents contained in the waste include mustard gas, lewis agents, diphenylcyanarsine, diphenylchloroarsine, and phenylchloroacetone. The pre-treatment waste, which is waste before the heat treatment, is accommodated in the pre-treatment waste container 100, and the pre-treatment waste container 100 is supplied to the treatment system 1 in a sealed state. The pre-treatment waste container 100 is a drum made of steel in the present embodiment, and has lower heat resistance than the heat treatment container 10 described later.

As shown in fig. 1 to 3, the processing system 1 of the present embodiment includes: a lifter 2, a roller conveyor 4, a pre-treatment transfer device 6, a plurality of containers 10 for heat treatment, a reach truck 11, a forklift 12, a heating furnace 13, a cooling furnace 14, a trolley 15, and a post-treatment transfer device 16.

The elevator 2 is a device for lifting the pre-treatment waste container 100 containing the pre-treatment waste from 1 level to 2 levels of a building in which the treatment system 1 is installed. An unsealing chamber 22 is provided at the 2-storey of the building, the unsealing chamber 22 unseals the sealed pre-process waste container 100, and the pre-process waste container 100 lifted by the lifter 2 is automatically fed into the unsealing chamber 22.

The roller conveyor 4 is provided in the unsealing chamber 22, and carries and conveys the pre-treatment waste container 100 sent into the unsealing chamber 22. In the unsealing chamber 22, the pre-treatment waste container 100 is unsealed by an operator on the roller conveyor 4, that is, the opening of the pre-treatment waste container 100 is opened by removing the lid 100a on the top of the pre-treatment waste container 100.

The pre-treatment waste transfer device 6 is a device for transferring pre-treatment waste from the pre-treatment waste container 100 to the heat treatment container 10. The pre-treatment transfer device 6 is disposed on the downstream side in the conveying direction of the roller conveyor 4. The pre-treatment transfer device 6 has a pre-treatment waste discharge device 23, a pre-treatment waste chute 24, and a pre-treatment waste gate 25.

The pre-treatment waste discharge device 23 is a device for discharging pre-treatment waste from the pre-treatment waste container 100 from a position higher than the heat treatment container 10 installed on the 1 st floor of the building, specifically, on the 2 nd floor of the building. Specifically, the pre-treatment waste discharge device 23 is configured to lift and invert the pre-treatment waste container 100 that is unsealed by the operator and conveyed by the roller conveyor 4 as described above, thereby discharging the pre-treatment waste in the pre-treatment waste container 100 from the opening of the pre-treatment waste container 100.

The pre-treatment waste chute 24 receives the pre-treatment waste discharged from the pre-treatment waste container 100 by the pre-treatment waste discharge device 23, and guides the pre-treatment waste to the heat treatment container 10 provided on the floor 1 of the building. The pre-treatment waste chute 24 is installed across 2 floors to 1 floor of a building. The pre-treatment waste chute 24 has a receiving portion 26 and a guiding portion 27.

The receiving portion 26 is a portion for receiving the pre-treatment waste discharged from the pre-treatment waste container 100 by the pre-treatment waste discharge device 23, and has an upper portion disposed on 2 floors of the building and a lower portion protruding through the 2 floors of the building toward 1 floor. The receiving portion 26 is formed in a cylindrical shape, and a lower portion thereof is narrower than an upper portion.

The guide portion 27 is a portion that guides the pre-treatment waste that passes through the receiving portion 26 and falls from an outlet at the lower portion of the receiving portion 26 to the heat treatment container 10. The guide 27 is disposed at the 1 st floor of the building so as to receive the waste before treatment falling from the outlet at the lower part of the receiving portion 26, and is inclined so that the received waste before treatment is inclined and slid in the guide 27 toward the container 10 for heat treatment.

The pre-treatment waste gate 25 is provided at an outlet of the lower end portion of the pre-treatment waste chute 24, that is, at an outlet of the guide portion 27. The pre-treatment waste gate 25 is configured to be capable of obtaining a pre-treatment chute outlet closed state and a pre-treatment chute outlet open state. The pre-treatment chute outlet closed state is a state in which the pre-treatment waste that has passed through the pre-treatment waste chute 24 and fallen down is prevented, specifically, the outlet of the guide portion 27 is closed so that the pre-treatment waste that has fallen down in the guide portion 27 is prevented from being released from the outlet of the guide portion 27. The pre-treatment chute outlet opening state is a state in which the outlet of the guide portion 27 is opened to allow pre-treatment waste to be released from the outlet of the guide portion 27. The pre-processing waste gate 25 is configured to stop the tendency of the pre-processing waste falling down in the pre-processing waste chute 24 by preventing the discharge of the pre-processing waste at the outlet of the guide portion 27 in the pre-processing chute outlet closed state, and thereafter, to release the pre-processing waste accumulated on the upstream side of the pre-processing waste gate 25 in the guide portion 27 from the outlet of the guide portion 27 with a gentle tendency by switching to the pre-processing chute outlet open state.

The pre-treatment waste gate 25 includes a pre-treatment waste gate plug 30 and a gate plug driving unit not shown.

The pre-treatment waste gate plug 30 is plate-shaped, and as shown in fig. 1, is provided on the guide portion 27 so as to be rotatable between a blocking position 30a for blocking the outlet of the guide portion 27 and an opening position 30b for opening the outlet of the guide portion 27. The state in which the pre-treatment waste gate plug 30 is at the blocking position 30a is the pre-treatment chute outlet blocking state, and the state in which the pre-treatment waste gate plug 30 is at the opening position 30b is the pre-treatment chute outlet opening state.

The plug drive unit is a drive device for moving the pre-treatment waste plug 30 between the closing position 30a and the opening position 30 b.

The pre-treatment waste gate 25 is set to the pre-treatment chute outlet blocking state by the gate plug driving unit arranging the pre-treatment waste gate plug 30 at the blocking position 30a before the pre-treatment waste container 100 is inverted by the pre-treatment waste discharge device 23, that is, before the pre-treatment waste is thrown into the pre-treatment waste chute 24, and is maintained in the pre-treatment chute outlet blocking state for a predetermined time period from the time when the pre-treatment waste container 100 is inverted by the pre-treatment waste discharge device 23. After the predetermined time has elapsed, the gate plug drive section moves the pre-processing waste gate plug 30 to the open position 30b, thereby switching the pre-processing waste gate 25 to the pre-processing chute outlet open state. The prescribed time is set in advance. Specifically, the time taken from the time when the pre-treatment waste container 100 is inverted by the pre-treatment waste discharge device 23 to the time when all the pre-treatment waste in the pre-treatment waste container 100 is discharged from the outlet of the pre-treatment waste chute 24 (the outlet of the guide 27) is measured in advance, and the predetermined time is set to be longer than the measured time.

The plurality of containers 10 for heat treatment are containers which receive and store the pre-treatment waste discharged from the outlet of the pre-treatment waste chute 24 (the outlet of the guide portion 27), and are transported to the heating furnace 13 in a state where the pre-treatment waste is stored, as will be described later, and are subjected to heat treatment in the heating furnace 13. Therefore, each of the heat treatment containers 10 is formed of a material having high heat resistance, that is, a material having high resistance to thermal deformation, specifically, stainless steel (e.g., SUS 310S). In other words, each of the heat treatment containers 10 is formed of a material having higher heat resistance than the steel material of the pre-treatment waste container 100. The heat treatment container 10 may be formed in two layers. That is, the plurality of heat treatment vessels 10 include a lower heat treatment vessel 10a and an upper heat treatment vessel 10b stacked thereon. The lower layer heating treatment vessel 10a and the upper layer heating treatment vessel 10b are examples of the 1 st heating treatment vessel and the 2 nd heating treatment vessel of the present invention.

As shown in fig. 4 and 5, each of the heat treatment containers 10 includes a waste tray 52 and a frame 54.

The waste tray 52 is a portion of the heat treatment container 10 that receives waste, and is formed in a shape that is curved so as to protrude downward in height from the peripheral portion toward the central portion, that is, in a bowl shape. The waste tray 52 is formed of stainless steel (e.g., SUS 310S). The waste tray 52 has a circular outer shape as viewed from above, and has a circular opening at an upper portion thereof, as shown in fig. 6. The waste tray 52 has a receiving surface 52a, which is a surface on the inner side of the waste tray 52 and receives waste (see fig. 4). The receiving surface 52a has a shape that is curved so as to be convex downward with decreasing height from the peripheral portion toward the central portion thereof. That is, the receiving surface 52a is a concave surface curved so that the peripheral portion thereof is highest and the central portion thereof is lowest. The waste tray 52 has an outer surface 52b as an outer surface of the waste tray 52. The outer surface 52b is a convex surface having a shape curved so as to follow the receiving surface 52 a.

The frame 54 is configured to surround the waste tray 52, and is fixed to the waste tray 52 by welding. The frame 54 is formed of the same stainless steel as the waste tray 52. As shown in fig. 8 and 9, the frames 54 of the lower heating treatment vessel 10a and the upper heating treatment vessel 10b can be configured so that the waste trays 52 of the lower heating treatment vessel 10a and the upper heating treatment vessel 10b are overlapped with each other with a gap therebetween.

As shown in fig. 4 to 6, the frame 54 includes a base portion 56, a plurality of leg portions 58, an upper frame 60, and a plurality of brackets 62.

The base portion 56 constitutes the bottom portion of the heat treatment container 10. The base portion 56 is formed in a rectangular shape in plan view. The base portion 56 has an insertion recess 64 into which the fork blade 12a of the forklift 12 is inserted, and an insertion hole 66 into which a coupling rod 80 described later is inserted.

The base portion 56 has a plurality of transverse plates 68 and a plurality of longitudinal plates 69 that are combined and joined so as to extend orthogonally to each other, and the fitting recess 64 and the insertion hole 66 are provided in each of the transverse plates 68. Specifically, each of the horizontal plates 68 is provided with 2 fitting concave portions 64, and the 2 fitting concave portions 64 are arranged at intervals in the extending direction of the horizontal plate 68. Each of the fitting recesses 64 is recessed upward from a lower end of the cross plate 68. In addition, each of the horizontal plates 68 is provided with 2 insertion holes 66, and the 2 insertion holes 66 are disposed on both outer sides of the 2 fitting recesses 64 in the extending direction of the horizontal plate 68, and penetrate each of the horizontal plates 68 in the plate thickness direction.

The plurality of leg portions 58 are erected on the base portion 56. Specifically, as shown in fig. 7, the leg portions 58 are erected on the four corners of the base portion 56, respectively, and are erected on the base portion 56 at the central positions of the four sides of the base portion 56, respectively, in a plan view.

The upper frame 60 is formed by combining 4 frame members into a rectangular shape and joining them to each other. The upper frame 60 is fixed to the upper end of each of the plurality of leg portions 58. The waste tray 52 is joined and fixed to the upper frame 60 and 4 leg portions 58 provided upright at the center of each of the four sides of the base portion 56 among the plurality of leg portions 58.

The bracket 62 is a portion to which a coupling rod 80, which will be described later, is coupled to the insertion hole 66 of the base portion 56 of the upper heating processing container 10b in a state where two layers of the heating processing containers 10 are stacked. The frame 54 of each heat treatment vessel 10 has 4 brackets 62, and the 4 brackets 62 are arranged to face each other and to form a pair. That is, the frame 54 of each heat treatment container 10 includes two pairs of brackets 62. The two pairs of brackets 62 are disposed with an interval therebetween corresponding to the interval between the 2 insertion holes 66. Each bracket 62 is formed in an arch shape and fixed to upper frame 60 so as to protrude upward from upper frame 60. Each bracket 62 is configured to surround a space through which the coupling rod 80 is inserted, with an inner surface of the bracket 62 and an upper surface of the upper frame 60, toward the inside of the arch. The bracket 62 and the coupling rod 80 are coupled by inserting the coupling rod 80 into a space surrounded by the inner surface of the bracket 62 and the upper surface of the upper frame 60.

The processing system 1 of the present embodiment includes a plurality of connecting rods 80 (see fig. 10 and 11), and the plurality of connecting rods 80 connect the frames 54 of the lower heating treatment vessel 10a and the upper heating treatment vessel 10 to each other so as to prevent the frames 54 from separating vertically from each other in a state where the frames 54 are overlapped with each other. The connecting rod 80 is an example of a connecting member of the present invention. The connecting rod 80 is inserted into a space surrounded by the insertion holes 66 provided in the base portion 56 of the frame 54 of the upper heating processing vessel 10b and the inner surface of the bracket 62 corresponding to the frame 54 of the lower heating processing vessel 10a and the upper surface of the upper frame 60 in a state where the frame 54 of the lower heating processing vessel 10a and the frame 54 of the upper heating processing vessel 10b are overlapped, thereby connecting the frames 54 to each other so as to prevent the frame 54 of the lower heating processing vessel 10a and the frame 54 of the upper heating processing vessel 10b from being vertically separated from each other.

Fig. 10 and 11 show a state in which the upper heating treatment vessel 10b of the lower heating treatment vessel 10a and the upper heating treatment vessel 10b in a state of being overlapped and coupled to each other is lifted up as described below, and therefore, although a gap is generated between the upper frame 60 of the frame 54 of the lower heating treatment vessel 10a and the base portion 56 of the frame 54 of the upper heating treatment vessel 10b, the base portion 56 of the upper heating treatment vessel 10b is placed on the upper frame 60 of the lower heating treatment vessel 10b so that the base portion 56 of the upper heating treatment vessel 10b is in contact with the upper surface of the upper frame 60 of the lower heating treatment vessel 10b in a state in which the upper heating treatment vessel 10b is mounted on the lower heating treatment vessel 10 a.

The connecting rod 80 has a connecting rod body 81 and 2 separation preventing portions 82.

The connecting rod body 81 is formed in a linearly extending rod shape, and is a portion through which the space surrounded by the surface facing the inside of the bracket 62 and the upper surface of the upper frame 60 and the insertion hole 66 are inserted.

The 2 separation preventing portions 82 are attached to both ends of the coupling rod main body 81 in the extending direction. Each separation preventing portion 82 is a portion that prevents the connecting rod 80 from separating from the bracket 62 when the connecting rod 80 is displaced in the direction in which the connecting rod body 81 is separated from the bracket 62 along the extending direction of the connecting rod body 81 in a state where the connecting rod body 81 is inserted into the space surrounded by the inner surface of the bracket 62 of the lower heating processing vessel 10a and the upper surface of the upper frame 60. Each of the separation preventing portions 82 has a protruding portion 82a, and the protruding portion 82a protrudes outward from the connecting rod main body 81 in a direction orthogonal to the extending direction of the connecting rod main body 81, and as described above, when the connecting rod 80 is displaced in the direction of separating from the bracket 62, the protruding portion 82a abuts against the bracket 62, thereby preventing the connecting rod 80 from separating from the bracket 62. The dimension of the separation preventing portion 82 in the direction perpendicular to the extending direction of the connecting rod main body 81 is such a dimension that the separation preventing portion 82 can pass through the space surrounded by the inner surface of the bracket 62 and the upper surface of the upper frame 60, and the insertion hole 66. When the frame 54 of the lower heating treatment vessel 10a and the frame 54 of the upper heating treatment vessel 10b are connected by the connecting rod 80, the connecting rod 80 is disposed so that the protrusion 82a protrudes upward.

The reach forklift 11 is used for transporting the heat treatment container 10, in which the waste before treatment is placed by the pre-treatment transfer device 6, to a temporary placement location, and for transporting the heat treatment container 10, which is transported by the forklift 12 and temporarily placed in the temporary placement location, to the post-treatment transfer device 16 after the cooling treatment in the cooling furnace 14 after the heat treatment is completed, from the cooling furnace 14 by the trolley 15.

The forklift 12 transports the container 10 for heat treatment containing waste. Specifically, the forklift 12 is used for conveying the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b, which are stacked and connected to each other, from the temporary storage location, loading the vessels onto the cart 15, and after the cooling treatment in the cooling furnace 14 after the heat treatment is completed, lifting the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b, which are conveyed out of the cooling furnace 14 by the cart 15, from the cart 15, and conveying the vessels to the temporary storage location. The forklift 12 has a fork blade 12a that can be lifted up and down, and the container 10 for heat treatment is lifted up by the fork blade 12 a.

The heating furnace 13 performs a heating treatment of the waste so as to make the chemical agent contained in the waste harmless. The heating furnace 13 is subjected to a heating treatment for 8 hours at a temperature of 900 ℃. The heating furnace 13 is disposed on a semi-underground floor at a position lower than a one-story floor of the building. The semi-underground ground is an example of the installation surface of the utility model. The heating furnace 13 has a height from the semi-underground ground to reach a space of 2 floors beyond a space of 1 floor of the building. The heating furnace 13 is configured to be able to receive a carriage 15 in which a lower layer heating treatment vessel 10a and an upper layer heating treatment vessel 10b are placed in a state of being overlapped with each other.

The cooling furnace 14 receives the lower layer heating treatment vessel 10a and the upper layer heating treatment vessel 10b after the heating treatment by the heating furnace 13 together with the cart 15, and cools each heating treatment vessel 10 and the waste (treated waste) after the heating treatment contained therein. The cooling furnace 14 is configured to lower the temperature of each heat treatment container 10 and the treated waste contained therein by, for example, flowing air having a temperature equal to the outside air temperature in the furnace and holding the air in the furnace for about 24 hours.

The carriage 15 is loaded with the heat treatment container 10 containing the waste and moves itself, and carries the heat treatment container 10 containing the waste into the heating furnace 13 and out of the heating furnace 13, and carries the heat treatment container 10 containing the waste after heat treatment into the cooling furnace 14 and out of the cooling furnace 14. The carriage 15 is configured to be self-movable while loading the lower heating treatment vessel 10a and the upper heating treatment vessel 10b which are stacked on each other and respectively contain wastes. The trolley 15 is self-moving in the following manner: the lower layer heating process vessel 10a and the upper layer heating process vessel 10b loaded in a mutually overlapped state are introduced into the heating furnace 13, stay in the heating furnace 13 during the processing time of the heating process in the heating furnace 13, are withdrawn from the heating furnace 13 in a state where the lower layer heating process vessel 10a and the upper layer heating process vessel 10b are loaded after the processing time has elapsed, are introduced into the cooling furnace 14, stay in the cooling furnace 14 during the processing time of the cooling process in the cooling furnace 14, and are withdrawn from the cooling furnace 14 after the processing time of the cooling process has elapsed. The trolley 15 is disposed on the semi-underground ground.

The post-treatment transfer device 16 (see fig. 3) is a device for transferring the post-treatment waste, which is the waste after the heat treatment and cooling, from the heat treatment container 10 to the post-treatment waste container 101. The post-treatment waste container 101 is a drum similar to the pre-treatment waste container 100 in the present embodiment. The post-treatment transfer device 16 includes a post-treatment waste lowering device 38, a post-treatment waste chute 40, a post-treatment waste gate 42, a weighing device not shown, and an elevating device 43.

The post-treatment waste dropping device 38 is a device for taking out the post-treatment waste from the heat treatment container 10 in which the post-treatment waste subjected to the heat treatment in the heating furnace 13 and the cooling treatment in the cooling furnace 14 is accommodated and dropping the post-treatment waste from a position higher than the post-treatment waste container 101. The post-treatment waste lowering device 38 has a post-treatment container inverting device 44 and a slat conveyor 46.

The treated container inverting device 44 is a device that lifts the heat treatment container 10 containing the treated waste after the heat treatment and the cooling treatment, and inverts the heat treatment container 10 so as to release the treated waste from the heat treatment container 10. The treated container inverting device 44 inverts the heat treatment container 10 so that the treated waste discharged from the heat treatment container 10 falls on the slat conveyor 46.

The slat conveyor 46 is a device for conveying the processed waste falling thereon, and is disposed to be inclined so as to be higher toward the downstream side in the conveying direction. The downstream end of the slat conveyor 46 in the conveying direction is disposed above the processed waste chute 40, and the processed waste on the slat conveyor 46 is dropped from the downstream end.

The post-treatment waste chute 40 receives post-treatment waste dropped from the post-treatment waste dropping device 38, that is, post-treatment waste dropped from the downstream end of the slat conveyor 46, and guides the post-treatment waste to the opening of the post-treatment waste container 101. The post-treatment waste chute 40 is hollow, and has an inlet opening at an upper end thereof for receiving the post-treatment waste, and an outlet opening at a lower end thereof for discharging the post-treatment waste that has fallen down through the post-treatment waste chute 40. The outlet of the treated waste chute 40 is of smaller diameter than the inlet of the treated waste chute 40.

A post-treatment waste gate 42 is provided at the outlet of the post-treatment waste chute 40. The post-treatment waste gate 42 is configured to be able to take the following states: a post-treatment chute outlet blocked state blocking the outlet of the post-treatment waste chute 40 in such a manner as to prevent the post-treatment waste that has passed through and fallen down in the post-treatment waste chute 40 from being released from the outlet of the post-treatment waste chute 40; a post-treatment chute outlet open state that opens the outlet of the post-treatment waste chute 40 in a manner that allows post-treatment waste to be released from the outlet of the post-treatment waste chute 40. The post-treatment waste gate 42 is configured to stop the tendency of the post-treatment waste to fall by preventing the discharge of the post-treatment waste at the outlet of the post-treatment waste chute 40 in the post-treatment chute outlet closed state, and thereafter, to switch to the post-treatment chute outlet open state, whereby the post-treatment waste deposited on the upper side of the post-treatment waste gate 42 in the post-treatment waste chute 40 falls from the outlet of the post-treatment waste chute 40 with a gentle tendency.

The post-treatment waste gate 42 includes a pair of post-treatment waste gate plugs 48, a gate plug rotation center portion 49, and a gate plug driving portion not shown.

The pair of post-treatment waste gate stoppers 48 are each plate-shaped and attached to the post-treatment waste chute 40 via a gate stopper rotation center portion 49. As shown in fig. 3, the pair of post-treatment waste gate plugs 48 are rotatable between a blocking position 48a for blocking the outlet of the post-treatment waste chute 40 and an opening position 48b for opening the outlet of the post-treatment waste chute 40, respectively, around a gate plug rotation center 49. The state in which the pair of post-treatment waste gate plugs 48 are in the closed position 48a is the post-treatment chute outlet closed state, and the state in which the pair of post-treatment waste gate plugs 48 are in the open position 48b is the post-treatment chute outlet open state.

The door stopper driving unit, not shown, is a driving device for simultaneously moving the pair of post-treatment waste door stoppers 48 between the closing position 48a and the opening position 48 b.

A non-illustrated meter is attached to the post-treatment waste chute 40, and is a device for measuring the weight of the post-treatment waste thrown into the post-treatment waste chute 40 from the slat conveyor 46, that is, the weight of the post-treatment waste deposited in the post-treatment waste chute 40.

The post-treatment waste gate 42 is configured to be in the post-treatment spout outlet blocking state by arranging a pair of post-treatment waste gate stoppers 48 at blocking positions 48a by the gate stopper driving unit from before the heat treatment vessel 10 is inverted by the post-treatment vessel inverting unit 44, and to be maintained in the post-treatment spout outlet blocking state until the amount (weight) of the post-treatment waste charged into the post-treatment waste spout 40 measured by the measuring unit is inverted by the post-treatment vessel inverting unit 44 from when the heat treatment vessel 10 is inverted by the post-treatment vessel inverting unit 44. Then, when the amount of the processed waste thrown into the processed waste chute 40 measured by the meter reaches a predetermined amount, the gate plug driving unit moves the pair of processed waste gate plugs 48 to the open position 48b, thereby switching the processed waste gate 42 to the processed chute outlet open state.

The lifting device 43 is configured to support the post-treatment waste container 101 below the outlet of the post-treatment waste chute 40 and to be capable of vertically lifting the supported post-treatment waste container 101. The lifting and lowering device 43 is configured to support the processed waste container 101 in a posture in which the processed waste container 101 is opened upward, and to lift and lower the processed waste container 101 by changing the height of the lifting and lowering device 43 in this state. The lifting device 43 is configured to lift the processed waste container 101 to be close to the outlet of the processed waste chute 40 when the processed waste is discharged from the outlet of the processed waste chute 40, and to lower the processed waste container 101 in which the processed waste is accommodated after the processed waste is accommodated in the processed waste container 101.

Next, a waste treatment method by the treatment system 1 of the present embodiment, that is, a waste treatment method in which waste is heat-treated so that chemical agents contained in the waste are made harmless, will be described. The waste treatment method includes a pre-treatment waste transfer step, a connection step, a loading step, a heating furnace loading step, a heating treatment step, a heating furnace external loading step, a cooling furnace internal loading step, a cooling furnace external loading step, a removal step, a connection release step, and a post-treatment waste transfer step, which are described below.

In this waste treatment method, first, the pre-treatment waste container 100 in a sealed state in which the pre-treatment waste is stored is loaded into the elevator 2 (see fig. 1), and the pre-treatment waste container 100 is lifted from the 1 st floor to the 2 nd floor of the building by the elevator 2. The pre-treatment waste container 100, which is raised to 2 levels, is automatically fed into the unsealing chamber 22.

The pre-treatment waste container 100 sent into the unsealing chamber 22 is conveyed by the roller conveyor 4, and is unsealed by an operator removing the upper lid 100a in the middle. Thereafter, the pre-treatment waste transfer device 6 performs a pre-treatment waste transfer step of transferring the pre-treatment waste from the pre-treatment waste container 100 conveyed by the roller conveyor 4 to the heating treatment container 10 having higher heat resistance than the pre-treatment waste container 100. The pre-treatment waste transfer step includes a pre-treatment waste input step and a pre-treatment waste introduction step.

The pre-treatment waste throwing step is a step of throwing the pre-treatment waste discharged from the pre-treatment waste container 100 into the pre-treatment waste chute 24 so as to fall down into the pre-treatment waste chute 24 in a state where the outlet of the pre-treatment waste chute 24, which is disposed at a position higher than the heat treatment container 10 and passes through the inside thereof to guide the pre-treatment waste to the heat treatment container 10, is closed by the pre-treatment waste gate 25. In this pre-treatment waste charging step, the pre-treatment waste container 100 conveyed by the roller conveyor 4 is inverted by the pre-treatment waste discharge device 23, and the pre-treatment waste in the pre-treatment waste container 100 is charged into the receiving portion 26 of the pre-treatment waste chute 24. The waste before treatment put into the receiving portion 26 passes through the receiving portion 26 and falls into the guide portion 27, and slides down in the guide portion 27. At this time, the pre-treatment waste gate 25 is in a pre-treatment chute outlet closed state, and the outlet of the guide portion 27 is closed by the pre-treatment waste gate 25. Therefore, the pre-treatment waste is not discharged from the outlet of the guide portion 27, but is accumulated on the upstream side of the pre-treatment waste gate 25 in the guide portion 27.

After the pre-treatment waste introduction step, the pre-treatment waste introduction step is performed. The pre-treatment waste introducing step is a step of opening the outlet (the outlet of the guide portion 27) of the pre-treatment waste chute 24 to release the pre-treatment waste accumulated in the guide portion 27 of the pre-treatment waste chute 24 from the outlet and introduce the pre-treatment waste into the heat treatment container 10. In this post-treatment waste introducing step, the pre-treatment waste gate 25 is switched from the pre-treatment chute outlet closed state to the pre-treatment chute outlet open state, and the outlet of the guide portion 27 is opened. Thereby, the waste before treatment accumulated in the guide portion 27 is released from the outlet of the guide portion 27 and falls down, and is introduced into the heat treatment container 10. Specifically, the fallen pre-treatment waste is placed on the receiving surface 52a of the waste tray 52 in the heat treatment container 10.

After the pre-treatment waste introduction step, the operator operates the forward forklift 11, and the container 10 for heat treatment containing the pre-treatment waste is transported to a temporary storage place by the forward forklift 11. The temporary placement site is on a floor. Then, in the temporary placement place, the heat treatment vessel 10 is stacked in two layers, and the frames 54 of the stacked double-layered heat treatment vessel 10 are connected to each other by the connecting rod 80 so that the frames 54 are prevented from being separated from each other in the vertical direction.

Specifically, in this connecting step, the lower-stage heating treatment vessel 10a is placed on the floor of one floor, and the frame 54 of the upper-stage heating treatment vessel 10b is superimposed on the frame 54 of the lower-stage heating treatment vessel 10a, whereby the upper-stage heating treatment vessel 10b is superimposed on the lower-stage heating treatment vessel 10 a. At this time, as shown in fig. 8 and 9, the base portion 56 of the frame 54 of the upper heating treatment vessel 10b is placed on the upper frame 60 of the frame 54 of the lower heating treatment vessel 10a, and the respective pairs of brackets 62 facing the lower heating treatment vessel 10a are aligned with the corresponding insertion holes 66 provided in the base portion 56 of the upper heating treatment vessel 10 b. Then, the operator inserts a coupling rod 80 (see fig. 10 and 11) into the insertion hole 66 of the first pair of brackets 62 of the lower heating treatment vessel 10a and the upper heating treatment vessel 10b aligned therewith, and inserts another coupling rod 80 into the insertion hole 66 of the second pair of brackets 62 of the lower heating treatment vessel 10a and the upper heating treatment vessel 10b aligned therewith. Thus, the lower heating treatment vessel 10a and the upper heating treatment vessel 10b are connected to each other via 2 connecting rods 80 in a stacked state without being separated vertically. In the state where the lower heating treatment vessel 10a and the upper heating treatment vessel 10b are stacked as described above, a gap is formed between the waste trays 52 of the heating treatment vessels 10a and 10 b.

Next, a loading step is performed in which the operator operates the forklift 12, conveys the lower-stage heat treatment vessel 10a and the upper-stage heat treatment vessel 10b, which are overlapped and connected to each other, by the forklift 12, and loads them onto the carriage 15 waiting at the loading/unloading site.

In this loading step, first, the fork blade 12a of the forklift 12 is fitted into the fitting recess 64 provided in the base portion 56 of the lower heat treatment container 10a, of the lower heat treatment container 10a and the upper heat treatment container 10b temporarily placed in the temporary placement location, the lower heat treatment container 10a is lifted up, the lower heat treatment container 10a and the upper heat treatment container 10b are lifted up, and the lower heat treatment container 10a and the upper heat treatment container 10b are transported by the forklift 12 in this state.

Then, the lower-stage heating treatment vessel 10a and the upper-stage heating treatment vessel 10b are temporarily lowered at an arbitrary place, and then the fork blade 12a is inserted into the fitting recess 64 of the base portion 56 provided in the upper-stage heating treatment vessel 10b again to lift the upper-stage heating treatment vessel 10 b. By lifting the upper heating treatment vessel 10b by the shovel in this manner, the lower heating treatment vessel 10a connected to the upper heating treatment vessel 10b is also lifted. Then, the forklift 12 travels on the floor surface of one floor with the lower heat treatment vessel 10a and the upper heat treatment vessel 10b lifted up in this manner, and the lower heat treatment vessel 10a and the upper heat treatment vessel 10b are transported to the truck 15 waiting at the loading/unloading site and loaded on the truck 15 (see fig. 2).

The loading/unloading place is located on the half-underground ground near the height difference with the first floor, and the carriage 15 is located at a position lower than the first floor. When the truck 15 is loaded, the forklift 12 projects and lowers the fork blade 12a lifting up the lower stage heat treatment vessel 10a and the upper stage heat treatment vessel 10b into the space on the truck 15 waiting at the loading/unloading site with the body thereof positioned on the floor surface, thereby loading the stacked lower stage heat treatment vessel 10a and upper stage heat treatment vessel 10b on the truck 15.

Next, a heating furnace loading step of loading the heating treatment container 10 containing the waste before treatment into the heating furnace 13 is performed. In this furnace loading step, the carriage 15 on which the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b are placed in a superimposed state is moved into the heating furnace 13, and thereby the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b containing the waste before treatment are loaded into the heating furnace 13. The moving-in process in the heating furnace is equivalent to the moving-in process in the utility model.

Next, a heat treatment step is performed in which the waste materials loaded into the heating furnace 13 and containing the lower heat treatment vessel 10a and the upper heat treatment vessel 10b are subjected to heat treatment together with the lower heat treatment vessel 10a and the upper heat treatment vessel 10 b. The heat treatment in the heating furnace 13 is continued for 8 hours, for example, with the temperature in the heating furnace 13 being 900 ℃. The cart 15 remains in the heating furnace 13 during the processing time of this heat treatment.

Then, a heating furnace external carrying-out step is performed, and after the treatment time of the heat treatment has elapsed, the carriage 15 moves by itself and retreats from the inside of the heating furnace 13, thereby carrying out the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b, which respectively store the heat-treated waste, from the inside of the heating furnace 13 to the outside. This heating furnace external carrying-out process corresponds to the carrying-out process in the present invention.

Next, a cooling furnace loading step of loading the heat treatment container 10 containing the waste after the heat treatment into the cooling furnace 14 is performed. In this cooling furnace loading step, the carriage 15 on which the lower heating treatment vessel 10a and the upper heating treatment vessel 10b in a stacked state are loaded is moved by itself into the cooling furnace 14, and thereby the lower heating treatment vessel 10a and the upper heating treatment vessel 10b, which respectively store the waste after the heating treatment, are loaded into the cooling furnace 14.

Next, a cooling step is performed in which the waste contained in the lower heating treatment vessel 10a and the upper heating treatment vessel 10b, respectively, which are carried into the cooling furnace 14, is cooled together with the lower heating treatment vessel 10a and the upper heating treatment vessel 10 b. In this cooling step, air having a temperature equal to the outside air temperature flows through the cooling furnace 14, and the waste after the heat treatment and the heat treatment containers 10a and 10b containing the waste are cooled by, for example, continuing exposure for about 24 hours in the environment inside the cooling furnace 14. The trolley 15 remains in the cooling furnace 14 during this cooling time.

Then, a cooling furnace external carrying-out step is performed, and after the cooling time of the cooling furnace 14 has elapsed, the carriage 15 moves and retreats from the inside of the cooling furnace 14, thereby carrying out the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b, which respectively store the cooled waste, from the inside of the cooling furnace 14 to the outside. The carriage 15 that has exited from the cooling furnace 14 moves to the loading/unloading place.

Next, a removal step is performed in which, after the heat treatment, the lower heat treatment vessel 10a and the upper heat treatment vessel 10b, which contain the treated waste as the cooled waste, are removed from the carriage 15. In this unloading step, the operator operates the forklift 12, and lifts the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b on the truck 15 by the forklift 12 to unload the vessels from the truck 15. At this time, the body of the forklift 12 is positioned on the floor, and the fork blade 12a is fitted into the fitting recess 64 provided in the base portion 56 of the upper heating treatment vessel 10b, so that the upper heating treatment vessel 10b is scooped up. By lifting up the upper heating treatment vessel 10b in this manner, the lower heating treatment vessel 10a connected to the upper heating treatment vessel 10b is also lifted up. Then, the lower heating treatment vessel 10a and the upper heating treatment vessel 10b are lifted up until the lower end of the lower heating treatment vessel 10a is positioned higher than the floor surface of the first floor. The forklift 12 travels on the floor surface in this lifted state, and conveys the lower layer heating treatment vessel 10a and the upper layer heating treatment vessel 10b to a temporary storage place.

Next, in the temporary placement location, the operator removes the connecting rod 80 connecting the lower heat treatment vessel 10a and the upper heat treatment vessel 10b from the heat treatment vessels 10a and 10b to release the connection, and separates the lower heat treatment vessel 10a and the upper heat treatment vessel 10b from each other.

Next, as shown in fig. 3, the operator operates the front-loading forklift 11, and the containers 10 for heat treatment are transported one by one from the temporary storage location to the post-treatment transfer device 16 by the front-loading forklift 11. Thereafter, a post-treatment waste transfer step of transferring the post-treatment waste from the heat treatment container 10 to the post-treatment waste container 101 is performed. The post-treatment waste transfer step is performed by the post-treatment transfer device 16. The post-treatment waste transfer step includes a post-treatment waste input step, a post-treatment waste introduction step, a container approaching step, and a container lowering step.

The post-treatment waste throwing step is a step of throwing the post-treatment waste taken out from the heat treatment vessel 10 into the post-treatment waste chute 40 so that the post-treatment waste falls down in the post-treatment waste chute 40 in a state where the outlet of the post-treatment waste chute 40, which is disposed at a position higher than the post-treatment waste vessel 101 and passes through the interior thereof to guide the post-treatment waste to the post-treatment waste vessel 101, is closed. Specifically, in the post-treatment waste charging step, the heat treatment container 10 conveyed by the reach truck 11 as described above is set in the post-treatment container inverting device 44 of the post-treatment waste lowering device 38. Thereafter, the treated container inverting device 44 lifts and inverts the heat treatment container 10, and drops the treated waste contained in the heat treatment container 10 onto the plate conveyor 46. The plate conveyor 46 conveys the processed waste falling thereon, and drops the processed waste from the downstream end in the conveying direction to be thrown into the processed waste chute 40. At this time, since the post-treatment waste gate 42 is in the post-treatment chute outlet closed state and the outlet of the post-treatment waste chute 40 is closed by the post-treatment waste gate 42, the post-treatment waste which is dropped into the post-treatment waste chute 40 is not released from the outlet of the post-treatment waste chute 40 but is deposited on the post-treatment waste gate 42 in the post-treatment waste chute 40.

Thereafter, a post-treatment waste introduction step is performed. The post-treatment waste introduction step is a step of releasing and introducing the post-treatment waste accumulated in the post-treatment waste chute 40 into the post-treatment waste container 101 through an outlet of the post-treatment waste chute 40 by opening the outlet. Specifically, in this post-treatment waste introduction step, the post-treatment waste gate 42 is switched from the post-treatment chute outlet closed state to the post-treatment chute outlet open state, and the outlet of the post-treatment waste chute 40 is opened. As a result, the processed waste deposited in the processed waste chute 40 is discharged from the outlet of the processed waste chute 40, falls, and is introduced into the processed waste container 101 disposed below the outlet. A receiving bag (for example, a sack or a film bag) is provided in the post-treatment waste container 101, and the post-treatment waste falling from the outlet of the post-treatment waste chute 40 enters the receiving bag.

In this post-treatment waste transfer step, a container approaching step is performed before the post-treatment waste introducing step, and the lifting device 43 lifts the post-treatment waste container 101 to approach the outlet of the post-treatment waste chute 40. Therefore, the processed waste falling from the outlet of the processed waste chute 40 is guided into the processed waste container 101 with a gentle tendency.

After the post-treatment waste introduction step, a container lowering step is performed, and the lifting device 43 lowers the post-treatment waste container 101 containing the post-treatment waste.

Thereafter, the processed waste container 101 containing the processed waste is sent to a subsequent step, and the upper lid 101a is closed and sealed. Thereafter, the sealed processed waste container 101 is carried out.

The waste treatment method by the treatment system 1 of the present embodiment is performed as described above.

In the present embodiment, since the pre-treatment waste accommodated in the heat treatment container 10 and loaded on the carriage 15 can be carried into the heating furnace 13 by the carriage 15 moving by itself and the post-treatment waste can be carried out from the heating furnace 13, even when a large amount of waste is subjected to heat treatment for detoxifying a chemical agent, the carrying in of the pre-treatment waste into the heating furnace 13 and the carrying out of the post-treatment waste from the heating furnace 13 are facilitated.

In addition, in the present embodiment, since the waste is heat-treated in the heating furnace 13 in a state of being accommodated in the heat treatment container 10, even when the waste contains a lot of chips and dust, the processed waste can be carried out from the heating furnace 13 together with the heat treatment container 10 without performing an operation of collecting the processed waste in order to collect the processed waste. Therefore, the waste after treatment can be easily recovered.

In addition, in the heat treatment for detoxifying the chemical agent, the waste is heated to a very high temperature, but in the present embodiment, since the container for storing the waste and being heat-treated in the heating furnace 13 is the heat treatment container 10 having high heat resistance, it is possible to suppress the heat treatment container 10 from being deformed by the heat of the high-temperature heat treatment for detoxifying the chemical agent. Therefore, the treated waste can be easily taken out of the heat treatment container 10, and the treated waste can be easily collected.

In the present embodiment, the frame 54 of each heat treatment vessel 10 is configured such that the frame 54 of the upper heat treatment vessel 10b is overlapped on the frame 54 of the lower heat treatment vessel 10a so as to form a gap between the waste tray 52 of the lower heat treatment vessel 10a and the waste tray 52 of the upper heat treatment vessel 10 b. Therefore, the lower-stage heat treatment vessel 10a and the upper-stage heat treatment vessel 10b, on which the waste is placed on each waste tray 52, can be loaded on the carriage 15 and loaded into the heating furnace 13 to perform the heat treatment in a state where the waste trays 52 are overlapped with each other with a gap formed therebetween. Therefore, during the heating process in the heating furnace 13, the hot air flows between the waste tray 52 of the lower heating process container 10a and the waste tray 52 of the upper heating process container 10b, and as a result, the waste in the waste tray 52 of the lower heating process container 10a and the waste in the waste tray 52 of the upper heating process container 10b can be efficiently heated.

In the present embodiment, the frame 54 of the lower heating treatment vessel 10a and the frame 54 of the upper heating treatment vessel 10b are connected by the connecting rod 80 in a state where the upper heating treatment vessel 10b is superposed on the lower heating treatment vessel 10 a. Therefore, the lower stage heat treatment vessel 10a and the upper stage heat treatment vessel 10b in a stacked state can be loaded from the one-story floor surface by the forklift 12 on the carriage 15 which is installed on the semi-underground floor surface together with the heating furnace 13 and is located at a position lower than the one-story floor surface while the heating furnace 13 is installed on the semi-underground floor surface which is located at a position lower than the one-story floor surface of the building accommodating the heating furnace 13, thereby reducing the building height and reducing the construction cost of the building.

Specifically, since the height of the heating furnace 13 capable of receiving the carriage 15 on which the lower stage heating treatment vessel 10a and the upper stage heating treatment vessel 10b are mounted in a superimposed state is large and a space for maintenance needs to be secured above the heating furnace 13, if the heating furnace 13 is installed on the floor of one floor of a building, the building height must be increased, and the building construction cost is increased. In contrast, in the present embodiment, the high-height heating furnace 13 is installed on the semi-underground floor, so that the height of the building can be reduced, and as a result, the construction cost of the building can be reduced.

On the other hand, as the heating furnace 13 is installed on a semi-underground floor, the carriage 15 for carrying the waste into the heating furnace 13 is also inevitably installed on the semi-underground floor, and as a result, the carriage 15 is disposed at a position lower than the floor of one floor. When the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b are stacked on the cart 15 by the forklift 12 on the one floor, if the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b are lifted up by lifting the lower layer heat treatment vessel 10a with the fork blade 12a of the forklift 12, the fork blade 12a of the forklift 12 is hard to be lowered to a position lower than the one floor, and therefore, it becomes difficult to load the lower layer heat treatment vessel 10a and the upper layer heat treatment vessel 10b on the cart 15 at a position lower than the one floor. In contrast, in the present embodiment, the frames 54 of the stacked lower heating treatment vessel 10a and upper heating treatment vessel 10b are connected by the connecting rod 80, and thus the upper heating treatment vessel 10b is lifted by the fork blade 12a of the forklift 12, whereby the lower heating treatment vessel 10a can be lifted together with the upper heating treatment vessel 10 b. Therefore, even if the fork blade 12a is not lowered to a position lower than the first floor surface, the lower-floor heating treatment vessel 10a can be lowered to a position lower than the first floor surface with the upper-floor heating treatment vessel 10b supported by the fork blade 12a, and as a result, the lower-floor heating treatment vessel 10a and the upper-floor heating treatment vessel 10b can be loaded on the carriage 15 at a position lower than the first floor surface.

In addition, in the present embodiment, since the receiving surface 52a of the waste tray 52 of each heat treatment container 10 has a shape that is curved so as to be convex downward with decreasing height from the peripheral portion to the central portion thereof, the treated waste contained in each heat treatment container 10, that is, the treated waste placed on the receiving surface 52a of the waste tray 52 can be easily taken out without remaining. For example, if the waste receiving surface of the heat treatment container has a bent portion forming a corner, the waste after the heat treatment is removed, the waste remains in the corner, and it is difficult to remove the waste after the heat treatment without leaving any residue. In contrast, in the present embodiment, since the receiving surface 52a of the waste tray 52 of each heat treatment container 10 has a shape that is curved so as to be convex downward with decreasing height from the peripheral portion toward the central portion thereof, no corner portion is formed, and no waste remains at the corner portion. Therefore, the processed waste stored in the waste tray 52 can be easily taken out without leaving any residue.

In addition, in the present embodiment, when the pre-treatment waste is transferred from the pre-treatment waste container 100 to the heat treatment container 10 by the pre-treatment transfer device 6, it is possible to prevent the powdery material contained in the pre-treatment waste from scattering, or the pre-treatment waste (pre-treatment waste already placed on the waste tray 52) having entered the heat treatment container 10 from flying out of the heat treatment container 10 due to a tendency to fall, and as a result, it is possible to prevent the pre-treatment waste from contaminating the surrounding environment.

For example, when the pre-processing waste released from the pre-processing waste container 100 into the pre-processing waste chute 24 and falling down in the pre-processing waste chute 24 is released from the outlet of the pre-processing waste chute 24 in this tendency, there is a possibility that the powder contained in the pre-processing waste may scatter or the pre-processing waste may fly out of the heat-processing container 10 in this tendency even if the pre-processing waste has entered the heat-processing container 10. In contrast, in the present embodiment, a pre-treatment waste gate 25 is provided at the outlet of the pre-treatment waste chute 24, and is configured to be able to take the following state: a pre-treatment chute outlet blocked state in which pre-treatment waste that has passed through and fallen down within the pre-treatment waste chute 24 is blocked from being released from the outlet of the pre-treatment waste chute 24; since the pre-treatment chute outlet open state is a state in which the pre-treatment waste chute 24 is opened to allow the pre-treatment waste to be released from the outlet, when the pre-treatment waste falls down in the pre-treatment waste chute, the pre-treatment waste gate 25 can be brought into the pre-treatment chute outlet closed state to block the outlet of the pre-treatment waste chute 24, thereby stopping the tendency of the pre-treatment waste to fall down, and thereafter, the pre-treatment waste gate 25 is switched to the pre-treatment chute outlet open state, whereby the pre-treatment waste deposited in the vicinity of the outlet in the pre-treatment waste chute 24 can be released from the outlet of the pre-treatment waste chute 24 with a gentle tendency and introduced into the heat treatment container 10. Therefore, when the pre-treatment waste is transferred from the pre-treatment waste container 100 to the heat treatment container 10 in the pre-treatment transfer device 6, it is possible to prevent the powder contained in the pre-treatment waste from scattering, or the pre-treatment waste that has entered the heat treatment container 10 from flying out of the heat treatment container 10 due to a tendency to fall.

In the present embodiment, when the processed waste is transferred from the heat treatment container 10 to the processed waste container 101 by the post-processing transfer device 16, it is possible to prevent the powder contained in the processed waste from scattering or prevent the storage bag placed in the processed waste container 101 from being damaged by the tendency of the processed waste to fall.

For example, in the post-treatment transfer device 16, when the post-treatment waste falling down in the post-treatment waste chute 40 is discharged from the outlet of the post-treatment waste chute 40, there is a possibility that powder contained in the post-treatment waste may scatter, or the post-treatment waste may fly into the storage bag placed in the post-treatment waste container 101 in a state of falling down, and the storage bag may be damaged. In contrast, in the present embodiment, a post-treatment waste gate 42 is provided at the outlet of the post-treatment waste chute 40, and is configured to be able to take the following state: a post-treatment chute outlet blocked state in which post-treatment waste falling within the post-treatment waste chute 40 is blocked in such a manner as to prevent the release of the post-treatment waste from the outlet of the post-treatment waste chute 40; since the post-treatment chute outlet open state in which the post-treatment waste is allowed to be released from the outlet of the post-treatment waste chute 40 is opened, when the post-treatment waste falls down in the post-treatment waste chute 40, the post-treatment waste gate 42 is brought into the post-treatment chute outlet closed state to block the outlet of the post-treatment waste chute 40, thereby suppressing the falling tendency of the post-treatment waste, and thereafter, the post-treatment waste gate 42 is switched to the post-treatment chute outlet open state, whereby the post-treatment waste accumulated in the vicinity of the outlet in the post-treatment waste chute 40 can be released from the outlet of the post-treatment waste chute 40 with a gentle tendency and introduced into the post-treatment waste container 101. Therefore, when the processed waste is transferred from the heat treatment container 10 to the processed waste container 101 by the post-processing transfer device 16, it is possible to prevent the powder contained in the processed waste from scattering or to prevent the storage bag placed in the processed waste container 101 from being damaged by the falling tendency of the processed waste.

In the present embodiment, the post-treatment transfer device 16 includes the lifting device 43 configured to support the post-treatment waste container 101 below the outlet of the post-treatment waste chute 40 and to be able to lift and lower the supported post-treatment waste container 101, and therefore, when the post-treatment waste falls from the outlet of the post-treatment waste chute 40 and is introduced into the post-treatment waste container 101, it is possible to more reliably prevent the powder contained in the post-treatment waste from scattering or the storage bag placed in the post-treatment waste container 101 from being damaged by the fallen post-treatment waste.

Specifically, when the processed waste falls from the outlet of the processed waste chute 40, the processed waste container 101 is lifted by the lifting device 43 and disposed at a position close to the outlet of the processed waste chute 40, whereby the powder contained in the processed waste can be more reliably prevented from scattering from the gap between the outlet of the processed waste chute 40 and the processed waste container 101, and the tendency of the processed waste to fall into the processed waste container 101 can be reduced, and the housing bag can be more reliably prevented from being damaged.

(modification example)

The waste treatment system of the present invention is not necessarily limited to the above-described case. For example, the waste disposal system of the present invention may have the following configuration.

The heat treatment container mounted on the carriage is not necessarily limited to two layers, and may be one layer, or may be three or more layers.

The pre-treatment waste gate is not necessarily limited to automatically switching the pre-treatment chute outlet closed state and the pre-treatment chute outlet open state, and may be switched between the pre-treatment chute outlet closed state and the pre-treatment chute outlet open state by a switching operation of an operator or the like.

The post-treatment waste gate is not necessarily limited to automatically switching the post-treatment chute outlet closed state and the post-treatment chute outlet open state, and may be switched between the post-treatment chute outlet closed state and the post-treatment chute open state by an operator's switching operation.

Claims (11)

1. A waste treatment system for heat-treating waste so as to make harmless a chemical agent contained in the waste, comprising:

a heating furnace for heating the waste;

at least 1 heat-resistant container for heat treatment for storing the waste;

a trolley that is self-moving in the following manner: the container for heat treatment containing the waste is loaded into the heating furnace, left in the heating furnace during the treatment time of the heat treatment in the heating furnace, and is withdrawn from the heating furnace with the container for heat treatment loaded after the treatment time has elapsed.

2. The waste treatment system of claim 1,

the at least 1 heat treatment vessel includes a 1 st heat treatment vessel and a 2 nd heat treatment vessel,

the 1 st heat treatment vessel and the 2 nd heat treatment vessel each have: a waste tray as a portion of the heat treatment container for receiving the waste; a frame which is configured in a manner of surrounding the waste tray and is fixed on the waste tray,

the frames of the 1 st and 2 nd heat treatment vessels are configured to be vertically overlapped with each other in such a manner that a gap is formed between the waste trays of the 1 st and 2 nd heat treatment vessels,

the carriage is configured to be capable of self-moving while loading the 1 st and 2 nd heat treatment vessels in a state of being overlapped with each other,

the heating furnace is configured to be capable of receiving the carriage on which the 1 st heat treatment vessel and the 2 nd heat treatment vessel are mounted in a mutually overlapped state.

3. The waste treatment system according to claim 2, further comprising a coupling member that couples the frames of the 1 st and 2 nd heat treatment containers to each other in a state where the frames are overlapped with each other so as to prevent the frames from being separated from each other.

4. The waste treatment system of claim 2,

the waste tray has a receiving surface as a surface for receiving the waste,

the receiving surface has a shape that is curved so as to be convex downward with decreasing height from a peripheral portion to a central portion of the receiving surface.

5. The waste treatment system of claim 3,

the waste tray has a receiving surface as a surface for receiving the waste,

the receiving surface has a shape that is curved so as to be convex downward with a height decreasing from a peripheral portion to a central portion of the receiving surface.

6. The waste treatment system according to any one of claims 1 to 5, further comprising a pre-treatment transfer device that transfers the pre-treatment waste to the heating treatment container from a pre-treatment waste container that contains the pre-treatment waste before the heating treatment and has a lower heat resistance than the heating treatment container.

7. The waste treatment system of claim 6 wherein the pre-treatment transfer device has: a pre-treatment waste discharge device that discharges the pre-treatment waste from the pre-treatment waste container at a position higher than the heating treatment container; a pre-treatment waste chute that receives the pre-treatment waste released from the pre-treatment waste container by the pre-treatment waste release device and directs the pre-treatment waste to the heat treatment container; a pre-treatment waste gate provided at an outlet of the pre-treatment waste chute, the pre-treatment waste gate being configured to be able to obtain: a pre-treatment chute outlet blocked state blocking the pre-treatment waste chute outlet in a manner preventing the pre-treatment waste that passes through and falls within the pre-treatment waste chute from being released from the pre-treatment waste chute outlet, and a pre-treatment chute outlet open state opening the pre-treatment waste chute outlet in a manner allowing the pre-treatment waste to be released from the pre-treatment waste chute outlet.

8. The waste treatment system according to any one of claims 1 to 5 and 7, further comprising a post-treatment transfer device that transfers a post-treatment waste that is the waste after the heat treatment from the heat treatment container to a post-treatment waste container,

the transfer device after treatment has: a post-treatment waste dropping device that takes out the post-treatment waste from the heat treatment container and drops the post-treatment waste from a position higher than the post-treatment waste container; a post-treatment waste chute that receives the post-treatment waste falling from the post-treatment waste lowering device and directs the post-treatment waste to the post-treatment waste container; a post-treatment waste gate provided at an outlet of the post-treatment waste chute, the post-treatment waste gate being configured to be able to obtain: a post-treatment chute outlet blocked state blocking the outlet of the post-treatment waste chute in a manner preventing the post-treatment waste that has passed through and fallen within the post-treatment waste chute from being released from the outlet of the post-treatment waste chute, and a post-treatment chute outlet open state opening the outlet of the post-treatment waste chute in a manner allowing the post-treatment waste to be released from the outlet of the post-treatment waste chute.

9. The waste treatment system according to claim 6, further comprising a post-treatment transfer device that transfers the post-treatment waste that is the heat-treated waste from the heat treatment container to a post-treatment waste container,

the transfer device after treatment has: a post-treatment waste dropping device that takes out the post-treatment waste from the heat treatment container and drops the post-treatment waste from a position higher than the post-treatment waste container; a post-treatment waste chute that receives the post-treatment waste falling from the post-treatment waste lowering device and directs the post-treatment waste to the post-treatment waste container; a post-treatment waste gate provided at an outlet of the post-treatment waste chute, the post-treatment waste gate being configured to be able to obtain: a post-treatment chute outlet blocked state blocking the outlet of the post-treatment waste chute in a manner preventing the post-treatment waste that has passed through and fallen within the post-treatment waste chute from being released from the outlet of the post-treatment waste chute, and a post-treatment chute outlet open state opening the outlet of the post-treatment waste chute in a manner allowing the post-treatment waste to be released from the outlet of the post-treatment waste chute.

10. A waste disposal system as defined in claim 8, wherein the post-treatment transfer device further includes a lifting device configured to support the post-treatment waste container below the outlet of the post-treatment waste chute and to be capable of vertically lifting the supported post-treatment waste container.

11. The waste treatment system according to claim 9, wherein the post-treatment transfer device further includes a lifting device configured to support the post-treatment waste container below the outlet of the post-treatment waste chute and to be capable of vertically lifting the supported post-treatment waste container.

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