Carbonization treatment system and carbonization treatment program

Abstract

To provide a carbonization treatment technique which reduces contamination effects from oil and residues from carbonization treatment.SOLUTION: A carbonization treatment system of the present invention comprises a storage container, a continuous furnace, a shutter, conveyance unit and a control unit. Among these, the conveyance unit comprises: a screw shaft part pivoted freely rotatably along a forward passage; a sliding nut part screwed with the screw shaft part with rotation restricted; a driving part sliding the sliding nut part onto the screw shaft part by transmitting forward / reverse shaft rotation force to the screw shaft part to reciprocate the sliding nut part; an engagement part provided at the storage container and receiving the force of progress from the sliding nut part; and an engagement / disengagement part interposed between the sliding nut part and the engagement part, engaged with the engagement part when the sliding nut part progresses, acting the forward force on the storage container, and parting from the engagement part when the sliding nut part drops down behind the engagement part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a carbonization treatment technique. [Background technology]

[0002] BACKGROUND ART Carbonization systems that carbonize waste and the like in a furnace have been known. For example, Patent Document 1 discloses a technology that describes a "carbonization system in which waste containers are placed on a transfer conveyor and transported inside a continuous furnace while being sequentially carbonized." [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-024783 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, waste materials are sequentially transported from the furnace using a transport conveyor. During this process, high-temperature oil and residues are generated from the transported waste materials as they are carbonized.

[0005] The transfer compart- ment is exposed to these oils and residues, and becomes contaminated by burning and other processes. In particular, industrially common transport means such as transfer conveyors are susceptible to contamination due to the large exposed areas of the operating parts. Therefore, the adhering contamination is likely to cause problems such as frequent reductions in transport performance.

[0006] Therefore, in order to maintain the transport performance of the transfer conveyor, it becomes necessary to thoroughly clean the internal transfer conveyor, for example by dismantling the continuous furnace on a large scale.

[0007] Therefore, in Patent Document 1, there is room for improvement from the viewpoint of maintenance, such as the time and expense required to maintain the transport performance inside the continuous furnace.

[0008] Therefore, an object of the present invention is to provide a conveying means that reduces the influence of contamination caused by oil and residues that accompany the carbonization process. [Means for solving the problem]

[0009] The carbonization treatment system of the present invention comprises the following components (a storage container, a continuous furnace, a shutter, a transport unit, and a control unit).

[0010] The container is a container for transporting the object to be carbonized. The continuous furnace is configured by connecting treatment sections for carbonization treatment along the transport path of the storage containers.

[0011] The shutters separate the transport path into the processing sections and close them, thereby forming processing chambers with different temperature zones.

[0012] The transport section advances the container to the next processing section in sequence. The control unit controls the shutter and the transport unit, opens the shutter while the container is moving forward, and closes the shutter after the container has moved forward, and sets a processing temperature for each of the processing chambers formed to perform the carbonization process.

[0013] Of these, the conveying section has the following components (a screw shaft section, a sliding nut section, a driving section, an engaging section, and a separating section).

[0014] The screw shaft portion is axially disposed along the progressive path and is rotatably supported. The sliding nut portion is threadedly engaged with the threaded shaft portion in a state where rotation is restricted. The drive portion transmits forward and reverse axial rotational forces to the screw shaft portion, thereby causing the sliding nut portion to slide along the screw shaft portion and perform a reciprocating motion.

[0015] The engagement portion is provided on the container and receives a forward force from the sliding nut portion. The disengagement portion is interposed between the sliding nut portion and the engagement portion, engages with the engagement portion when the sliding nut portion moves forward, causing the forward force to act on the storage container, and disengages from the engagement portion when the sliding nut portion moves down behind the engagement portion. [Effects of the Invention]

[0016] In the present invention, the axis of the screw shaft is arranged along the progressive path of the storage container. By rotating the screw shaft forward and backward, the sliding nut that is threaded onto the screw shaft is reciprocated. The forward force of the sliding nut acts on the storage container via the engagement portion and the disengagement portion. As a result, the storage container is pushed forward and transported inside the continuous furnace.

[0017] In this case, oil and residue generated from the object to be carbonized will adhere to the threads of the screw shank. However, each time the sliding nut reciprocates, the crests and valleys of the threads of the screw shank slide against the threads of the sliding nut, thereby reducing contamination of the threads of the screw shank in a self-cleaning manner.

[0018] Therefore, according to the present invention, a transport means that is easy to maintain and reduces the effects of contamination by oil and residues in a carbonization treatment system is provided.

[0019] The details of the problems, configurations, and effects other than those described above will be explained in the embodiments described later. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a side view illustrating the internal configuration of a carbonization system 100. As shown in FIG. [Figure 2] FIG. 2 is a diagram illustrating the operation of the joining and separating section 550. As shown in FIG. [Figure 3] FIG. 3 is a perspective view illustrating the internal configuration of the carbonization system 100. As shown in FIG. [Figure 4] FIG. 4 is a diagram illustrating a main part of the transport section 500 of the carbonization system 100. As shown in FIG. [Figure 5] FIG. 5 is a diagram for explaining the transport operation (first half) of the storage container 200 step by step. [Figure 6] FIG. 6 is a diagram illustrating the transport operation (second half) of the storage container 200 step by step. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings. [Example]

[0022] <<Configuration of Example 1>> FIG. 1 is a side view illustrating the internal configuration of a carbonization system 100. As shown in FIG. In FIG. 1, the carbonization system 100 includes a container 200 , a continuous furnace 300 , a shutter 400 , a transport unit 500 , and a control unit 600 .

[0023] Of these, the storage container 200 is a container for transporting the object to be carbonized. It is preferable to provide casters (wheels) or rollers for smooth transportation on the bottom side of the storage container 200. Furthermore, it is also preferable to provide rails for guiding the storage container 200 along the transport path.

[0024] The continuous furnace 300 is configured by connecting the required number of treatment sections for carbonization treatment along the transport path of the storage container 200. The storage containers 200 are sequentially carried into the continuous furnace 300 from the outside. The storage containers 200 that have passed through multiple treatment sections are sequentially carried out from the continuous furnace 300 to the outside.

[0025] The shutter 400 separates and closes the transfer path of the continuous furnace 300 into processing sections, thereby forming processing chambers with different temperature zones.

[0026] The conveying unit 500 advances the storage container 200 from the current processing section to the next processing section in a sequential manner. The conveying unit 500 includes a screw shaft unit 510, a sliding nut unit 520, a driving unit 530, an engaging unit 540, and a disengaging unit 550.

[0027] Of these, the threaded shaft portion 510 has a thread formed on the rod-shaped side peripheral surface. The threaded shaft portion 510 is axially disposed along the path along which the storage container 200 is fed forward, and is rotatably supported. In the first embodiment, the threaded shaft portion 510 is disposed on the ceiling side of the processing chamber.

[0028] The sliding nut portion 520 is screwed onto the screw shaft portion 510 in a state where its rotation is restricted by a guide rail or the like inside the furnace.

[0029] The driving unit 530 transmits forward / reverse axial rotation force to the screw shaft unit 510. As the screw shaft unit 510 rotates forward / reverse in this manner, the sliding nut unit 520 moves back and forth on the axis of the screw shaft unit 510.

[0030] The engagement portion 540 is provided on the storage container 200 and receives a forward force from the sliding nut portion 520. The engagement portion 540 is composed of a front engagement portion 540A provided on the front side of the storage container 200 and a rear engagement portion 540B provided on the rear side. In the first embodiment, these engagement portions 540 are provided on the upper side of the storage container 200 in order to receive a forward force from the sliding nut portion 520 on the ceiling side.

[0031] The separation portion 550 is provided between the sliding nut portion 520 and the engagement portion 540. When the sliding nut portion 520 moves forward, the separation portion 550 engages with the engagement portion 540 and applies a forward force to the storage container 200. When the sliding nut portion 520 moves backward, the separation portion 550 acts to separate the sliding nut portion 520 from the engagement portion 540.

[0032] FIG. 2 is a diagram illustrating the operation of the joining and separating section 550. As shown in FIG. In Fig. 2[1], the sliding nut part 520 is positioned in front of the engagement part 540. The sliding nut part 520 moves backward from this position.

[0033] In Figure 2 [2], the separating part 550 moving backward is flipped up onto the front end of the engaging part 540. To enable such a natural flipping up, the separating part 550 is pivotally supported on the sliding nut part 520 via, for example, a pivot shaft 550a or the like. In a state in which the separating part 550 is flipped up (hereinafter referred to as "posture mode A"), the sliding nut part 520 and the separating part 550 slip past the upper surface of the engaging part 540 to the rear.

[0034] In Figure 2 [3], the sliding nut part 520 and the separation part 550 slip past the upper surface of the engagement part 540 and go around to the rear of the engagement part 540. The separation part 550 rotates the shaft 550a downward due to its own weight and returns to the normal posture of the separation part 550. From this position, the sliding nut part 520 reverses its moving direction and starts moving forward.

[0035] In Figure 2 [4], as the sliding nut part 520 advances, the disengagement part 550 comes into contact with and braces the engagement part 540, thereby engaging with the engagement part 540. At this time, a rotation stopper such as a stopper 520a may be provided to prevent the disengagement part 550 from rotating in the opposite direction. In this state (hereinafter referred to as "posture mode B"), as the sliding nut part 520 advances, the sliding nut part 520, the disengagement part 550, and the engagement part 540 work together to move the storage container 200 forward in a sequential manner.

[0036] FIG. 3 is a perspective view illustrating the internal configuration of the carbonization system 100. As shown in FIG. FIG. 4 is a diagram illustrating a main part of the transport section 500 of the carbonization system 100. As shown in FIG. As shown in FIGS. 3 and 4, the combinations of the screw shaft portion 510, the sliding nut portion 520, the engaging portion 550, and the engaging portion 540 are arranged in two parallel rows along the forward path of the storage container 200.

[0037] If it is sufficient to drive a plurality of rows of conveying units 500 in the same manner, a single driving unit 530 may transmit a shaft rotation force to the plurality of rows of conveying units 500 in common.

[0038] 3 and 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and a duplicated description will be omitted.

[0039] About the carbonization program Note that part or all of the control unit 600 described above may be configured as hardware in the form of a computer system including a CPU (Central Processing Unit), memory, etc. This hardware executes a "carbonization processing program" stored in a computer-readable medium, thereby realizing part or all of the functions of the control unit 600.

[0040] Some or all of this hardware may be replaced with dedicated equipment, machine learning devices, DSPs (Digital Signal Processors), FPGAs (Field-Programmable Gate Arrays), GPUs (Graphics Processing Units), PLDs (Programmable Logic Devices), etc.

[0041] Furthermore, the control unit 600 does not need to be integrated with the continuous furnace 300, but may be located separately from it. For example, a cloud system may be configured by centralizing or distributing part or all of the computer system and programs of the control unit 600 to a server on a cloud. In this case, cloud-based control of the control unit 600 makes it possible to provide control services to multiple continuous furnaces 300 from the central control unit 600 at any time.

[0042] <<Operation Description of Example 1>> Next, as an operation description of the first embodiment, the transport operation of the storage container 200 will be described.

[0043] 5 and 6 are diagrams for explaining the transport operation of the storage container 200 step by step. The steps shown in FIGS. 5 and 6 will be explained below.

[0044] Step S1: In the processing section where the front side of the storage container 200 (approximately half of the front side in FIG. 5) has entered, the control unit 600 causes the sliding nut portion 520 to move backward, for example, to engage the separation portion 550 with the front engagement portion 540A.

[0045] Step S2: With the engaging / disengaging part 550 engaged with the front engaging part 540A, the control part 600 advances the sliding nut part 520 to a position where the front and rear of the storage container 200 fit within the processing section.

[0046] Step S3: In the processing section where the container 200 is placed, the control unit 600 closes the rear shutter 400 that was open, to form a processing chamber.

[0047] Step S4: With the processing chamber formed, the control unit 600 supplies heated steam and an inert gas (for example, nitrogen gas) to the processing chamber to heat it, thereby carrying out a carbonization process.

[0048] Step S5: In the processing section during or after the carbonization process, the control unit 600 moves the sliding nut unit 520 backward, thereby separating the separation unit 550 from the front engagement unit 540A and engaging the separation unit 550 with the rear engagement unit 540B.

[0049] Here, if the sliding nut portion 520 starts moving backward during the carbonization process (including immediately before the completion of the carbonization process), the next transport operation can be started as quickly as possible after the carbonization process.

[0050] On the other hand, if the sliding nut portion 520 is moved backward after the carbonization process is completed (which may be after the front shutter 400 is opened), there is little risk of contamination re-adhering to the screw shaft portion 510 after the sliding nut portion 520 has passed (i.e., after self-cleaning).

[0051] Step S6: In the processing section after the carbonization process, the control unit 600 opens the front shutter 400.

[0052] Step S7: With the separating part 550 engaged with the rear engagement part 540B, the control part 600 advances the sliding nut part 520, thereby advancing the front side of the storage container 200 (approximately half of the front side in FIG. 6) to a position where it enters the next processing section. At this time, in the next processing section, the separating part 550 in the backward moving state is flipped up to its front end by the front engagement part 540A and goes around behind the front engagement part 540A. Steps S8 to S10: By repeating the above-described operations (steps S1 to S7) for each processing section, the transport unit 500 advances the storage container 200 sequentially to the next processing section.

[0053] Effect of Example 1 The first embodiment provides the following effects through the above-described configuration and operation.

[0054] (1) In Example 1, oil and residue generated from the object to be carbonized adhere to the threads of the screw shank 510. However, when the storage container 200 is transported, the sliding nut portion 520 reciprocates while threaded onto the screw shank 510. This reciprocating motion causes the threads of the screw shank 510 to slide against the threaded portion of the sliding nut portion 520, so that contamination adhering to the screw shank 510 is reduced in a self-cleaning manner. Therefore, Example 1 is superior in that it realizes a transport means that reduces the effects of contamination by oil and residue accompanying the carbonization process.

[0055] (2) In Example 1, the posture of the separating portion 550 changes between posture mode A, in which the separating portion 550 is bounced up by the front end of the engaging portion 540 and wraps around behind the engaging portion 540, and posture mode B, in which the separating portion 550 abuts against the engaging portion 540 and engages with it by being pushed forward by the sliding nut portion 520 moving forward. Due to this posture change of the separating portion 550, a forward force acts on the storage container 200 only when the reciprocating sliding nut portion 520 moves forward. Therefore, Example 1 is advantageous in that the separating portion 550 converts the reciprocating motion of the sliding nut portion 520 into a forward force of the storage container 200.

[0056] (3) In Example 1, a plurality of combinations of the screw shaft portion 510, the sliding nut portion 520, the engaging portion 550, and the engaging portion 540 are arranged in parallel along the forward feed path. By providing a plurality of rows of conveying portions 500 in this manner and applying a forward feed force in parallel, it is possible to suppress left-right wobble of the storage container 200 when it moves forward. Therefore, Example 1 is superior in that it smoothly forward feeds the storage container 200 while suppressing left-right wobble of the storage container 200.

[0057] (4) In Example 1, the engagement portions 540 (front engagement portion 540A, rear engagement portion 540B) are provided at least at two locations, front and rear, of the storage container 200, so that the storage container 200 is moved forward once in two half-feed movements. As a result, the reciprocating distance of the sliding nut portion 520 is shortened, and it is possible to shorten the length of the screw shaft portion 510. In this case, shortening the screw shaft portion 510 makes the screw shaft portion 510 less likely to twist. Therefore, Example 1 is advantageous in that the loss of force during forward movement can be reduced by shortening the screw shaft portion 510 and making it less likely to twist.

[0058] (6) In Example 1, as shown in Figures 5 and 6, only the shutters 400 through which the storage container 200 passes are opened, and the other shutters 400 are always closed. This reduces the outflow of high-temperature gas into the processing section as much as possible, thereby suppressing a drop in temperature. Therefore, Example 1 is advantageous in that it can reduce the energy required to heat the carbonization processing system 100 and thereby save energy.

[0059] (7) In Example 1, during the processing section "during" carbonization, an operation sequence can be selected in which the sliding nut portion 520 is moved backward and the engagement portion 550 is engaged with the rear engagement portion 540B. In this case, the sequence of moving the sliding nut portion 520 backward during carbonization (or immediately before the completion of carbonization) can be completed as quickly as possible, so that the next transport operation can be started as soon as possible after carbonization. Therefore, in this case, Example 1 is advantageous in that it can shorten the processing time required for the series of carbonization processes in the continuous furnace 300.

[0060] (8) Furthermore, in Example 1, in the processing section "after" the carbonization process, an operation sequence can be selected in which the sliding nut portion 520 is moved backward and the engagement portion 550 is engaged with the rear engagement portion 540B. In this case, by moving the sliding nut portion 520 backward after the carbonization process (which may be after the front shutter 400 is opened), contamination that has adhered to the screw shank portion 510 during this carbonization process can be self-cleaned by the backward movement of the sliding nut portion 520. Furthermore, since the carbonization process has been completed, there is little risk of contamination re-adhering to the screw shank portion 510 after the sliding nut portion 520 has passed. Therefore, Example 1 in this case is excellent in that contamination of the screw shank portion 510 can be reduced as much as possible.

[0061] Other supplementary information In the embodiment, a gap is provided between the processing zones. However, the present invention is not limited to this. For example, the processing zones (processing chambers) may be adjacent to each other without a gap. In this case, the number of shutters 400 separating adjacent processing zones can be reduced from two to one.

[0062] In the embodiment, the screw shaft portions 510 and the like are provided in two rows along the forward feed path. However, the number of rows in the present invention is not limited to this. For example, the structure may be simplified by using only one row. Also, for example, the forward feed force of the conveying portion 500 may be increased by increasing the number of rows to three or more.

[0063] Furthermore, in the embodiment, the transport unit 500, including the screw shaft unit 510, is provided only on the ceiling side of the processing section. However, the present invention is not limited to this. For example, the transport unit 500 may be provided on the side of the processing section (on the right or left side of the storage container 200) or on the bottom, or may be added.

[0064] In the embodiment, the engagement portions 540 are provided at two locations (front engagement portion 540A and rear engagement portion 540B) in the front-rear direction of the storage container 200. However, the present invention is not limited to this. For example, the engagement portions 540 may be provided at three or more locations in the front-rear direction of the storage container 200.

[0065] Furthermore, in the embodiment, the storage containers 200 are fed one by one after the front processing section is completely cleared. However, the present invention is not limited to this. For example, all of the shutters 400 may be opened, and multiple storage containers 200 may be fed sequentially as a single unit.

[0066] The present invention is not limited to the above-described embodiment, and various modifications are possible.

[0067] For example, the above-described embodiment has been described in detail to clearly explain the present invention, and the present invention is not necessarily limited to having all of the configurations, all of the steps, and all of the sequences described.

[0068] Furthermore, the present invention is not limited to the individual components, and for example, the individual components may be replaced with other types of components having equivalent functions.

[0069] In addition, individual elements of the embodiments may be partially combined. Furthermore, other configurations or steps may be added or substituted to the embodiments. Furthermore, some configurations or steps may be deleted from the embodiments, or the order of these steps may be changed. [Explanation of symbols]

[0070] 100...carbonization treatment system, 200...container, 300...continuous furnace, 400...shutter, 500...conveyor, 510...screw shaft portion, 520...sliding nut portion, 520a...stopper, 530...drive portion, 540...engagement portion, 540A...front engagement portion, 540B...rear engagement portion, 550...separation portion, 550a...shaft, 600...control portion

Claims

1. a container for transporting the object to be carbonized; a continuous furnace configured by connecting treatment sections for carbonization treatment along a transport path for the storage container; a shutter for dividing the transport path into the processing sections and closing the sections to form processing chambers with different temperature zones; a conveying unit that advances the storage container to the next processing section in sequence; a control unit that controls the shutter and the transport unit, opens the shutter while the container is moving forward and closes the shutter after the container has moved forward, and sets a processing temperature for each of the processing chambers to be formed and performs a carbonization process; The conveying unit is a screw shaft portion that is axially disposed along the progressive path and rotatably supported; A sliding nut portion that is threadedly engaged with the screw shaft portion in a rotation-restricted state; A drive unit that transmits forward / reverse axial rotational forces to the screw shaft portion to cause the sliding nut portion to slide along the screw shaft portion and perform reciprocating motion; an engagement portion provided on the container for receiving a forward force from the sliding nut portion; a disengagement portion that is interposed between the sliding nut portion and the engaging portion, that engages with the engaging portion when the sliding nut portion advances to apply the forward force to the storage container, and that disengages from the engaging portion when the sliding nut portion descends behind the engaging portion. A carbonization treatment system characterized by:

2. The carbonization system according to claim 1, The joining and separating portion is The posture changes between posture mode A, in which the sliding nut portion bounces up on the front end of the engaging portion and wraps around behind the engaging portion, and posture mode B, in which the sliding nut portion moves forward to abut against the engaging portion and engage with it. A carbonization treatment system characterized by:

3. The carbonization system according to claim 1, A plurality of combinations of the screw shaft portion, the sliding nut portion, the engagement portion, and the engagement portion are arranged in parallel along the forward feed path, The control unit applies the forward force parallel to the container. A carbonization treatment system characterized by:

4. The carbonization system according to claim 1, The engaging portions are provided at two locations in the front-rear direction of the storage container, The engaging portion (hereinafter referred to as the "front engaging portion") provided on the front side of the storage container engages with the separation portion advanced by the sliding nut portion when the front side of the storage container enters the processing section, and receives the forward feed force, thereby advancing the storage container to a position where it fits into the processing section, The engaging portion (hereinafter referred to as the "rear engaging portion") provided on the rear side of the storage container engages with the disengaging portion advanced by the sliding nut portion when the storage container is accommodated in the processing section, and receives the forward feeding force, thereby advancing the front side of the storage container to a position where it enters the next processing section. A carbonization treatment system characterized by:

5. The carbonization system according to claim 4, (1) In the processing section where the front side of the storage container has entered, the control unit engages the separation unit with the front engagement unit, (2) With the engaging portion engaged with the front engaging portion, the control unit advances the sliding nut portion to advance the storage container to a position where the storage container fits into the processing section, (3) In the processing section where the storage container is placed, the control unit closes the shutter that has been open to form the processing chamber; (4) In a state where the processing chamber is formed, the control unit supplies heated steam and an inert gas to the processing chamber to perform a carbonization process; (5) In the processing section during or after the carbonization process, the control unit moves the sliding nut portion backward to separate the separation portion from the front engagement portion and engage the separation portion with the rear engagement portion, (6) In the processing section after the carbonization process, the control unit opens the front shutter and advances the sliding nut section in a state in which the engagement section engages with the rear engagement section, thereby advancing the front side of the storage container to a position where it enters the next processing section. A carbonization treatment system characterized by:

6. The computer system, The control unit according to any one of claims 1 to 5 is configured to function as the control unit. A carbonization treatment program characterized by:

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