Carbonization equipment

Abstract

To provide a carbonization apparatus having higher carbonization capacity.SOLUTION: A carbonization apparatus 1 according to one aspect of the present invention comprises: a first combustion material conveying unit 2 for conveying a first combustion material M1; a second combustion material conveying unit 3 for conveying a second combustion material M2 provided above the first combustion material conveying unit 2; a combustion unit 4 that is provided with an outer wall 41 that covers the first combustion material conveying unit 2 and the second combustion material conveying unit 3, and combusts the combustion material M1 in the first combustion material conveying unit 2; and a roof section 5 provided above the outer wall section 41 of the combustion unit 4. This makes it possible to provide a carbonization apparatus with higher carbonization capacity.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a carbonization device, and more specifically, to a carbonization device having a structure for suppressing smoke generation. [Background technology]

[0002] Rice husks, which are produced in large quantities during the rice hulling process, are environmentally friendly because they do not contain nitrogen or sulfur oxides when burned. In addition, even when burned, they have no effect on the total amount of carbon dioxide in the atmosphere, making them carbon neutral.

[0003] Furthermore, rice husks can be carbonized to produce rice husk charcoal, which can be used for a variety of purposes, such as a soil conditioner, fertilizer, a deodorizer for livestock manure, and biomass fuel.

[0004] As a technique for efficiently carbonizing the rice husks, for example, Patent Document 1 listed below has been disclosed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2023-092220 A Summary of the Invention [Problem to be solved by the invention]

[0006] Although the technology described in Patent Document 1 is certainly useful in that it can carbonize rice husks, it has a problem in that it has only one combustion material transport section.

[0007] On the other hand, in recent years, there has been a need to carbonize agricultural residues other than rice husks, such as sugarcane pomace, potato husks, and buckwheat husks.

[0008] However, while it is desirable to sufficiently carbonize residues other than the rice husks, there is a problem in that the same transport route cannot adequately accommodate all of these.

[0009] In view of the above problems, an object of the present invention is to provide a carbonization device having a higher carbonization capacity. [Means for solving the problem]

[0010] A carbonization apparatus according to one aspect of the present invention comprises a first combustion material transporting section for transporting a first combustion material, a second combustion material transporting section provided above the first combustion material transporting section for transporting a second combustion material, an outer wall section covering the first combustion material transporting section and the second combustion material transporting section, a combustion section for combusting the first combustion material transporting section, and a roof section provided above the outer wall section.

[0011] In addition, in this respect, although not limited thereto, it is preferable that the first combustion substance and the second combustion substance are different.

[0012] In addition, in this respect, although not limited thereto, it is preferable to provide a first fuel material input section for inputting a first combustion material into the first combustion material transport section.

[0013] In addition, in this respect, although not limited thereto, it is preferable to provide a second fuel material input section for inputting a second combustion material into the second combustion material transport section.

[0014] Also, in this respect, although not limited thereto, it is preferable that the second combustion material transport section comprises a screw conveyor having a rotating shaft and a spiral blade member arranged around the rotating shaft, and a cover arranged around the screw conveyor.

[0015] In addition, in this aspect, although not limited thereto, it is preferable that a plurality of second combustion material transport sections are provided.

[0016] In addition, in this aspect, although not limited thereto, it is preferable that the multiple second combustion material transport sections are connected in series.

[0017] In addition, in this aspect, although not limited thereto, it is preferable that the plurality of second combustion material transport sections each have a different height.

[0018] In addition, in this aspect, although not limited thereto, it is preferable that a plurality of first combustion material transport sections are provided. Effect of the Invention

[0019] As described above, the present invention can provide a carbonization device with higher carbonization capacity. [Brief description of the drawings]

[0020] [Figure 1] 1 is a schematic side view of a carbonization device according to a first embodiment, seen from a side perpendicular to the direction of the rotation axis of a combustion material transport section. [Diagram 2] 1 is a schematic side view of a carbonization device according to a first embodiment, as viewed from the direction of a rotation axis of a combustion substance transfer section. [Diagram 3] 1 is a schematic cross-sectional view of a carbonization device according to a first embodiment, as viewed from a side perpendicular to the direction of the rotation axis of a combustion material transport section. [Figure 4] 1 is a schematic cross-sectional view of a carbonization device according to a first embodiment, as viewed from the direction of a rotation axis of a combustion substance transport section. [Diagram 5] FIG. 4 is a view for explaining small holes of a second combustion material transport section in the carbonization apparatus according to the first embodiment. [Figure 6] FIG. 11 is a schematic side view of a carbonization device according to a second embodiment, as viewed from a side perpendicular to the direction of the rotation axis of a combustion substance transport section. [Figure 7] FIG. 11 is a schematic side view of a carbonization device according to a second embodiment, as viewed from the direction of the rotation axis of a combustion substance transport section. [Figure 8] FIG. 11 is a schematic cross-sectional view of a carbonization device according to a second embodiment, as viewed from a side perpendicular to the direction of the rotation axis of a combustion substance transfer section. [Figure 9] FIG. 11 is a schematic cross-sectional view of a carbonization device according to a second embodiment, as viewed from the direction of the rotation axis of a combustion substance transport section. [Figure 10] FIG. 11 is a schematic top view of a combustion substance transport section in a carbonization device according to a second embodiment, as viewed from a side perpendicular to the rotation axis direction. [Figure 11] 11 is a schematic cross-sectional view of a combustion substance transport section in a carbonization device according to a second embodiment, as viewed from a side perpendicular to the rotation axis direction. FIG. BEST MODE FOR CARRYING OUT THEINVENTION

[0021] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be embodied in many different forms, and is not limited to the examples described in the following embodiments and examples.

[0022] 1 and 2 are schematic diagrams showing the side of the carbonization apparatus (hereinafter referred to as "the apparatus") 1 according to this embodiment, and Figs. 3 and 4 are schematic diagrams showing the cross section of the apparatus 1. As shown in these figures, the apparatus 1 is provided with a first combustion material conveying section 2 for conveying a first combustion material M1, a second combustion material conveying section 3 for conveying a second combustion material M2 provided above the first combustion material conveying section 2, an outer wall section 41 covering the first combustion material conveying section 2 and the second combustion material conveying section 3, a combustion section 4 for combusting the combustion material M1 in the first combustion material conveying section 2, and a roof section 5 provided above the outer wall section 41 of the combustion section 4.

[0023] In addition, this device 1 is provided with a first fuel material input section 6 for inputting a first combustion material M1 into the first combustion material transporting section 2, and further, similar to the first fuel material input section 6, a second fuel material input section 7 for inputting a second combustion material M2 into the second combustion material transporting section 3 is provided.

[0024] In addition, a support leg 8 is provided on the lower part of the combustion section 4, more specifically, on the lower part of the outer wall 41, for supporting the entire device 1 from the ground surface (for example, the ground surface). This allows the entire device to be elevated above the ground surface, making it easier to carry in and discharge carbonized combustion materials.

[0025] As shown in the figure, this device 1 is provided with two combustion material conveying sections, and by feeding combustion material into each, it is possible to simultaneously carbonize the combustion materials, and it is also possible to carbonize materials other than rice husks, for example, buckwheat husks, husks of agricultural crops such as potatoes, corn pomace, tree prunings and wood powder, and even agricultural residues that contain a relatively large amount of moisture, such as sugarcane pomace (so-called bagasse). In particular, materials other than rice husks can be efficiently carbonized by the second combustion material conveying section 3.

[0026] The first combustion material conveying section 2 of the present device 1 is for conveying the first combustion material M1 in at least one direction. The first combustion material conveying section 2 is preferably configured to include, but is not limited to, a rotating shaft 21, a spiral blade member 22 arranged around the rotating shaft 21, a cover 23 covering the rotating shaft 21 and the blade member 22, an ignition port 24, and an inlet 25. The combination of the rotating shaft 21 and the spiral blade member 22 is also called a screw conveyor. In this way, the first combustion material conveying section 2 can feed the first combustion material M1 from the inlet 25 into the gap of the blade member 22, and rotate the rotating shaft 21 and the blade member 22 to stably extrude and convey the combustion material in a desired direction while efficiently stirring it. Of course, the cover 23 is preferably provided with an inlet 25 for feeding the combustion material near one end, and an outlet 26 for discharging the combustion material (charcoal) that has been burned and carbonized is provided at the other end. As will become clear from the description below, it is preferable that the first combustion material transport section 2 has a portion within the combustion section 4 where the cover 23 is not provided (is open).

[0027] As is clear from the above description, the present device 1 is preferably provided with a first fuel material input section 6 for inputting the first combustion material M1 into the first combustion material conveying section 2. This makes it possible to easily input the first combustion material M1 into the first combustion material conveying section 2. The structure of the first fuel material input section 6 for conveying fuel to the first combustion material conveying section 2 is also preferably the same as that of the first combustion material conveying section 2, having, for example, a rotating shaft 61, a spiral blade member 62 arranged around the rotating shaft 61, and a cover 63 for covering the screw conveyor consisting of the rotating shaft 61 and the blade member 62.

[0028] The first combustion material M1 in the present device 1 is not particularly limited as long as it can be fed into the first combustion material conveying section 2 and burned while being conveyed thereto to be carbonized, but a preferred example is rice husks. Rice husks have a relatively low moisture content from the beginning, and are easy to burn, making them a suitable material for carbonization by the first combustion material conveying section 2. Of course, other materials can be used as long as they can be ignited and burned as they are.

[0029] It is also preferable that the first combustion material delivery section 2 is provided with an ignition port 24 for igniting the first combustion material M1, located in front of and near the combustion section 4. The user can ignite the first combustion material M1 at the ignition port 24 to start combustion. Of course, as long as it is possible to start combustion of the first combustion material M1 in the combustion section 4, the structure is not limited to this.

[0030] The present apparatus 1 also includes a combustion section 4. The combustion section 4 is a section that burns and carbonizes the first combustion material M1 transported by the first combustion material transport section 2, and also burns and carbonizes the second combustion material M2 transported by the second combustion material transport section 3, which will be described later in detail, by pyrolysis. The combustion section 4 includes the outer wall section 41, as described above.

[0031] The outer wall 41 of the combustion section 4 in the present device 1 is an important member that constitutes the main framework of the combustion section 4. Specifically, it is a member that controls the air flow to increase the combustion efficiency and covers the combustion section 4 to prevent smoke from unnecessarily leaking out.

[0032] Specifically, the outer wall 41 of the combustion section 4 is configured to cover the intermediate path of the first combustion material transport section 2. That is, the first combustion material M1 is burned inside the combustion section 4, carbonized, and then discharged to the outside of the combustion section 4 by the first combustion material transport section 2.

[0033] In addition, at least a part of the cover 23 of the first combustion material conveying section 2 in the combustion section 4, for example, the upper surface part, is removed. By removing the cover 23, carbon dioxide and smoke generated by combustion can be discharged into the combustion section 4. On the other hand, it is preferable that a perforated plate 231 having small holes is arranged below the rotating shaft 21 and the blade member 22 of the first combustion material conveying section 2. In this way, as described later, it is possible to form an air introduction passage 27 for passing air supplied from below without spilling rice husks. The perforated plate 231 may be a part of the cover 23. In this case, it is preferable that the size of the small holes is sufficiently smaller than the size of the combustion material so that the combustion material does not spill, while the size and number are provided to be sufficient to allow air to pass through. In addition, the outer wall part 41 may be configured to cover the entire first combustion material conveying section 2, but as mentioned here, it is preferable to remove a part of the cover 23 of the first combustion material conveying section 2 and cover the space. In other words, covering the first combustion material transport section 2 includes covering the space connected to the first combustion material transport section 2.

[0034] In addition, below the first combustion material conveying section 2 in the combustion section 4, as described above, the air introduction passage 27 is formed by the porous plate 231, and further, it is preferable that a blower 28 for introducing air is connected to this. By providing these, oxygen for combustion can be supplied to the combustion material, the combustion material can be agitated by the air flow, and further, the first combustion material M1 can be prevented from spilling under the porous plate 231.

[0035] It is preferable to place a heat insulating material 42 on the inner wall of the outer wall 41 of the combustion section 4. By placing a heat insulating material, there is an advantage that more efficient combustion can be achieved without letting heat escape to the outside.

[0036] As described above, the present device 1 is provided with the second combustion material transport section 3 that penetrates the combustion section 4 and is provided above the first combustion material transport section 2. Although not limited thereto, the second combustion material transport section 3 is preferably arranged along the combustion material transport direction of the first combustion material transport section 2, i.e., approximately parallel to the first combustion material transport section 2. Note that the "combustion material transport direction" here refers to the direction in which the combustion material is transported, and more specifically, the axial direction of the rotation shaft 21 in the first combustion material transport section 2.

[0037] In addition, in this device 1, the carbonized first combustion material M1 discharged from the discharge port 26 may be discharged as it is, but since it is necessary to store it at a position slightly away from the device 1, it is also preferable to provide a first carbonized material discharge section 9 that receives it and discharges it to the outside. This allows the storage tank T1 to be located at a position slightly away and the first carbonized material discharge section 9 to discharge it. It is also preferable that this first carbonized material discharge section 9 is equipped with a screw conveyor having a rotating shaft 91 and a spiral blade member 92 attached to it, and a cover 93 to protect it.

[0038] The second combustion material conveying section 3 has a configuration similar to that of the first combustion material conveying section 2, and the overlapping description will be omitted, but it is for conveying the second combustion material M2 in at least one direction. The second combustion material conveying section 3 is preferably configured to include, for example, a rotating shaft 31, a spiral blade member 32 arranged around the rotating shaft 31, and a cover 33 covering the rotating shaft 31 and the blade member 32, although it is not limited thereto. The combination of the rotating shaft 31 and the spiral blade member 32 is also called a screw conveyor. In this way, the second combustion material conveying section 3 can feed the second combustion material M2 into the gap of the blade member 32, and by rotating the rotating shaft 31 and the blade member 32, the second combustion material M2 can be efficiently stirred and stably conveyed in a desired direction. Of course, it is preferable that the cover 33 has an inlet 34 for feeding the second combustion material M2 near one end, and an outlet 35 for discharging the burned and carbonized combustion material (charcoal) at the other end. In this device 1, by providing two combustion material conveying sections, one combustion material is carbonized by the first combustion material conveying section 2, while the other combustion material can be carbonized by pyrolysis by providing the second combustion material conveying section 3. In other words, more efficient carbonization of the combustion material is possible. In particular, the second combustion material conveying section 3 has the advantage that it can carbonize even the second combustion material M2, which contains a lot of moisture, by drying and burning it, and therefore can carbonize agricultural residues other than those that have a low moisture content and can be ignited, such as rice husks.

[0039] In addition, in this device 1, the carbonized second combustion material M2 discharged from the discharge port 35 may be discharged as it is, but since it is necessary to store it at a position slightly away from the device 1, it is also preferable to provide a second carbonized material discharge section 10 that receives it and discharges it to the outside. This allows the storage tank T2 to be located at a position slightly away and the carbonized material to be discharged by the second carbonized material discharge section 10. It is also preferable that this carbonized material discharge section 10 is equipped with a screw conveyor having a rotating shaft 101 and a spiral blade member 102 attached to it, and a cover 103 that protects it.

[0040] Also, the cover 33 of the second combustion material conveying section 3 of the present device 1 is slightly different from the first combustion material conveying section 2, and no open portion is formed even in the combustion section 4. However, instead, a plurality of small holes 331 are formed. FIG. 5 shows a schematic diagram of a part of the cover 33 of the second combustion material conveying section 3 of the present device 1. The small holes 331 are large enough that the second combustion material M2 does not spill out. In other words, the second combustion material conveying section 3 can be made depleted by forming a minimum of 331, and unlike the first combustion material conveying section 2, carbonization by pyrolysis is possible by drying and spontaneous combustion without ignition.

[0041] The present apparatus 1 is provided with a roof portion 5 attached above the outer wall portion 41 with a gap G therebetween. In the present apparatus 1, the combustion material efficiently combusted inside the outer wall portion 41 is returned again into the outer wall portion 41 by the roof portion 5, and heat is returned for drying and combustion of the second combustion material M2. For this reason, in the present apparatus 1, it is preferable that the roof portion 5 has a convex ceiling. By making it convex, a return flow can be formed.

[0042] In addition, in this device 1, the second combustion material M2 is introduced from the inlet 34, similarly to the first combustion material transport section 2. Therefore, in this device 1, it is preferable to provide a second fuel material introduction section 7 for introducing the second combustion material M2 into the second combustion material transport section 3. This makes it possible to easily introduce the second fuel material M2 into the second fuel material transport section 3. In addition, the structure of the second fuel material introduction section 7 for transporting fuel to the second fuel material transport section 3 is also preferably the same as that of the second combustion material transport section 3, having, for example, a rotating shaft 71, a spiral blade member 72 arranged around the rotating shaft 71, and a cover 73 for covering the rotating shaft 71 and the blade member 72.

[0043] In the present device 1, although not limited thereto, it is preferable that the first combustion material M1 and the second combustion material M2 are different. As is clear from the above description, the first combustion material M1 can be carbonized by feeding a material such as rice husk that has little moisture, is easy to dry, and is easy to ignite, while the second combustion material conveying section 3 can dry, heat, and pyrolyze materials that have a lot of moisture, cannot be easily dried, and cannot be expected to ignite.

[0044] Here, the flow of smoke generated by combustion in this device will be described.

[0045] First, the combustion material combusted in the first combustion material transport section 2 in the combustion section 4 is carbonized while generating smoke. Meanwhile, the smoke rises and is introduced into the slot-forming member. Then, it is diffused along the slot-forming member toward the outer wall section 41.

[0046] The smoke that is guided upward by the outer wall portion 41 and rises is returned to the inside of the outer wall portion 41 by the roof portion 5 and then released to the outside.

[0047] On the other hand, in this device 1, the first combustion material transport section 2 is positioned so as to penetrate the combustion section 4, and by feeding other combustion materials into the second combustion material transport section 3 and rotating the rotating shaft 31 to feed the materials into the combustion material transport section, it is possible to carbonize these combustion materials by pyrolysis.

[0048] As described above, the present invention can provide a carbonization device with higher carbonization capacity.

[0049] (Embodiment 2) This embodiment is almost the same as the above-mentioned embodiment 1, but shows an example in which a plurality of second combustion material transport sections 3 are provided. Figures 6 and 7 are schematic diagrams showing the side of a carbonization apparatus (hereinafter referred to as "this apparatus") 1 according to this embodiment, and Figures 8 and 9 are schematic diagrams showing the cross section of this apparatus 1. This embodiment also differs from embodiment 1 in that a plurality of first combustion material transport sections 2 themselves are provided.

[0050] First, the amount of the first combustion material M1 that can be processed can be increased by providing a plurality of first combustion material transport parts 2. The first combustion material transport parts 2 exist independently of each other, and parallel processing is possible.

[0051] In addition, in this embodiment, a plurality of second combustion material conveying sections 3 are provided, and these are connected in series, which is different from the above-mentioned embodiment 1. In this embodiment, a plurality of second combustion material conveying sections 3 are provided and connected in series, so that the conveying distance of the second combustion material M2 can be secured long. That is, even if the combustion material contains a lot of moisture, it can be dried, combusted, and carbonized by conveying it over a long distance. FIG. 10 shows an outline of the second combustion material conveying section 3. FIG. 11 shows an outline of the cross section of the second combustion material conveying section 3. As shown in this figure, the second combustion material conveying section 3 in this device 1 is connected from one second combustion material conveying section 3 to another second combustion material conveying section 3 by a connecting section 36, and is conveyed in the opposite direction.

[0052] In addition, as shown in this embodiment, when multiple second combustion material transport sections 3 are provided, it is preferable to have two or more, and three as shown in this figure is practical and preferable, but the number can be adjusted as appropriate and is not limited.

[0053] In addition, in the present device 1, when a plurality of second combustion material transport parts 3 are provided, it is preferable that each of them has a different height, and more preferably, the height is gradually decreased in order of proximity to the inlet. By gradually decreasing the height, the width can be shortened even when multiple parts are arranged, and the second combustion material M2 can be transported so as to drop from a high position to a low position. Furthermore, by placing the parts closer to the first combustion material transport part 2 (heat source) in order to increase the temperature for the final stage, i.e., carbonization, the effect can be divided and effectively realized.

[0054] In this embodiment, the above-mentioned configuration provides a carbonization device having the same effects as those of the first embodiment, but with higher carbonization capacity.

[0055] In this embodiment, the first combustion material transport section 2 and the second combustion material transport section 3 are both provided in multiple units, but it is of course also possible to provide a configuration in which only the first combustion material transport section 2 or only the second combustion material transport section 3 is provided in multiple units. [Industrial Applicability]

[0056] This apparatus has industrial applicability as a carbonization apparatus. [Explanation of symbols]

[0057] 1...Carbonization device 2...First combustion material transport section 3...Second combustion material transport section 4. Combustion section 41...Outer wall part 5…Roof section 6…First combustion material input section 7...Second fuel material input section 8...Support leg 9...First carbonized material removal section 10…Second carbonized material discharge section M1: First combustion material M2…Second combustion material

Claims

1. A first combustion material transport unit that transports a first combustion material; A second combustion material transport section is provided above the first combustion material transport section and transports a second combustion material; a combustion section including an outer wall covering the first combustion material transport section and the second combustion material transport section, and combusting the first combustion material transport section; A carbonization apparatus comprising: a roof portion provided above the outer wall portion.

2. 2. The carbonizer of claim 1, wherein said first combustion material and said second combustion material are different.

3. The carbonization apparatus according to claim 1 , further comprising a first fuel material input section for inputting the first combustion material into the first combustion material transport section.

4. The carbonization apparatus according to claim 1 , further comprising a second fuel material input section for inputting the second combustion material into the second combustion material transport section.

5. 2. The carbonization apparatus according to claim 1, wherein the second combustion material transport section comprises a screw conveyor having a rotating shaft and a spiral blade member arranged around the rotating shaft, and a cover arranged around the screw conveyor.

6. The carbonization apparatus according to claim 1 , wherein a plurality of the second combustion material transport sections are provided.

7. The carbonization apparatus according to claim 6 , wherein the second combustion material transport sections are connected in series.

8. The carbonization apparatus according to claim 6 , wherein the second combustion material transport sections each have a different height.

9. The carbonization apparatus according to claim 1 , wherein a plurality of the first combustion material transport sections are provided.

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