Carbonization furnace

Abstract

To provide a carbonization furnace capable of uniformly carbonizing a material to be carbonized.SOLUTION: A carbonization furnace comprises a combustion chamber 112 for combusting fuel F, a dry distillation chamber 113 in which a material to be carbonized W is dry-distilled, and one or more dry distillation boxes 130 installed in the dry distillation chamber 113 and accommodating the material to be carbonized W. The combustion chamber 112 and the dry distillation chamber 113 are arranged adjacent to each other in a longitudinal direction, the dry distillation chamber 113 is connected to a gas inlet 113a for taking in combustion gas from the combustion chamber 112 and a gas outlet 113b for discharging the combustion gas, the gas inlet 113a and the gas outlet 113b are arranged so as to sandwich a plurality of dry distillation boxes 130 in the longitudinal direction, the gas inlet 113a is connected to an upper portion of the dry distillation chamber 113, and the gas outlet 113b is connected to a lower portion of the dry distillation chamber 113.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a carbonization furnace.

Background Art

[0002] For example, Patent Document 1 discloses a carbonization furnace that carbonizes waste subjected to required physical treatment. In that carbonization furnace, the inside of the furnace body is divided into a combustion region on the front stage side and an oxygen-free carbonization region on the rear stage side. However, it is said that the combustion region on the front stage side and the oxygen-free carbonization region on the rear stage side are not clearly defined.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a carbonization furnace for producing biochar using lignocellulosic biomass as a raw material or a reactor for producing biofuel, when the combustion region and the carbonization region arranged in series are not clearly defined as in Patent Document 1, for example, since the high-temperature combustion gas discharged from the combustion region rises, a temperature difference may occur in the vertical direction in the carbonization region. When such a temperature difference occurs in the carbonization region, the carbonization of the material to be carbonized may not be performed evenly, and it may become difficult to produce a homogeneous carbide.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a carbonization furnace capable of evenly carbonizing a material to be carbonized.

Means for Solving the Problems

[0006] In order to solve the above problems, the carbonization furnace of the present disclosure employs the following means. A carbonization furnace according to one aspect of the present disclosure includes a combustion chamber for burning fuel, a carbonization chamber for carbonizing the material to be carbonized, and one or more carbonization boxes installed in the carbonization chamber for accommodating the material to be carbonized. The combustion chamber and the carbonization chamber are arranged adjacent to each other in the front-rear direction perpendicular to the vertical direction. The carbonization chamber is connected to a gas inlet for taking in combustion gas from the combustion chamber and a gas outlet for discharging the combustion gas. The gas inlet and the gas outlet are arranged so as to sandwich the carbonization box in the front-rear direction. The gas inlet is connected to the upper part of the carbonization chamber, and the gas outlet is connected to the lower part of the carbonization chamber.

Advantages of the Invention

[0007] According to the present disclosure, the carbonization of the material to be carbonized can be carried out evenly.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0009] Hereinafter, a carbonization furnace according to an embodiment of the present disclosure will be described with reference to the drawings. Note that the terms "height direction", "front-back direction", and "width direction" used in the following description are for the purpose of explanation and do not limit the posture of the carbonization furnace in the actual system during use. Also, the "height direction", "front-back direction", and "width direction" are orthogonal to each other.

[0010] <Regarding the structure of the carbonization furnace> The carbonization furnace 100 according to an embodiment of the present disclosure is a furnace for producing biochar using a carbonizable material W such as woody biomass as a raw material / a furnace for producing biofuel.

[0011] FIG. 1 shows a carbonization furnace 100 according to an embodiment of the present disclosure. Further, FIG. 2 shows a cross-sectional view taken along the cutting line II-II of FIG. 1. As shown in FIGS. 1 and 2, the carbonization furnace 100 includes a container 110, a partition wall 120, one or a plurality of retort boxes 130, and a chimney 140.

[0012] The container 110 is a substantially rectangular parallelepiped box-shaped structure with a chamber 111 formed inside. The container 110 may be provided with a connection portion (not shown) used for connection and fixation to a vehicle such as a truck when mounted on the vehicle. That is, the carbonization furnace 100 may be a vehicle-mounted furnace.

[0013] A partition wall 120 is provided in the chamber 111 inside the container 110. The partition wall 120 is a plate-shaped structure extending in the height direction and is disposed at an intermediate position of the chamber 111 in the front-back direction. The intermediate position is the position between the front surface 110a and the rear surface 110b of the container 110 that defines the chamber 111, and does not necessarily have to be the central position (50:50 position). The partition wall 120 has an upper end 121 and a lower end 122. The lower end 122 is connected to the bottom surface 110d of the container 110. The upper end 121 is not connected to the ceiling surface 110c of the container 110, for example, and a gap is formed between the upper end 121 and the container 110.

[0014] The chamber 111 is vertically extended and partitioned in the front-rear direction by a partition wall 120 disposed at an intermediate position in the chamber 111. At this time, the rear space of the chamber 111 partitioned in the front-rear direction (the space adjacent to the rear surface 110b of the container 110) is defined as a combustion chamber 112, and the front space of the chamber 111 partitioned in the front-rear direction (the space adjacent to the front surface 110a of the container 110) is defined as a carbonization chamber 113. That is, the combustion chamber 112 and the carbonization chamber 113 are arranged adjacent to each other in the front-rear direction. Further, the combustion chamber 112 and the carbonization chamber 113 communicate with each other through a gap formed between the upper end 121 of the partition wall 120 and the ceiling surface 110c of the container 110. This gap is referred to as a "gas inlet 113a".

[0015] The combustion chamber 112 is a space for generating high-temperature combustion gas. Fuel F is installed in the combustion chamber 112, and high-temperature combustion gas is generated by burning the fuel F. The flow of the combustion gas is indicated by the black arrows in FIGS. 1 and 2.

[0016] The carbonization chamber 113 is a space in which the carbonizable material W such as woody biomass is carbonized / a space for carbonizing the carbonizable material W. One or more carbonization boxes 130 containing the carbonizable material W are installed in the carbonization chamber 113. The carbonization box 130 is configured to be able to process the carbonizable material W under oxygen deficiency. For example, the wall surface of the carbonization box 130 is configured such that combustion gas does not flow / hardly flows into the inside of the carbonization box 130. Note that the shape of the carbonization box 130 is substantially rectangular parallelepiped in FIGS. 1 and 2, but is not limited to this shape. For example, it may be a cylindrical shape extending in the vertical direction, or a cylindrical shape extending in the front-rear direction or the width direction.

[0017] The number of the carbonization boxes 130 is one or more. When using a plurality of carbonization boxes 130, compared with the case of using a single large carbonization box 130, the weight per carbonization box 130 can be reduced and it can be made more compact. Also, since the surface area per unit volume of the carbonization box 130 increases, the heat receiving area from the combustion gas increases. When using a plurality of carbonization boxes 130, the carbonization boxes 130 are arranged at intervals from each other. In the cases of FIGS. 1 and 2, four carbonization boxes 130 are arranged at intervals from each other in the width direction. Variations in the arrangement of the carbonization boxes 130 will be described later.

[0018] A chimney 140 is provided at the front part of the container 110. An exhaust flow path Pe is formed inside the chimney 140. The exhaust flow path Pe is a flow path extending in the vertical direction. The lower part of the exhaust flow path Pe communicates with the lower part of the carbonization chamber 113. The upper part of the exhaust flow path Pe is an opening open to the outside (in the atmosphere), and is, for example, at a position higher than the container 110 in the height direction.

[0019] The communication part / connection part between the carbonization chamber 113 and the exhaust flow path Pe is defined as the gas outlet 113b. That is, the gas outlet 113b is formed on the front surface 110a of the container 110 that forms the carbonization chamber 113.

[0020] <Regarding the use of the carbonization furnace and the flow of combustion gas> Put the material to be carbonized W into each carbonization box 130. Next, install the carbonization box 130 containing the material to be carbonized W in the carbonization chamber 113.

[0021] Ignite the fuel F installed in the combustion chamber 112. The fuel F may use the same raw material as the material to be carbonized W, such as woody biomass. When the fuel F is ignited, combustion air is introduced from an intake part (not shown) formed in the container 110, and a flame FL is stably formed.

[0022] The high-temperature combustion gas generated by the combustion of fuel F rises in the combustion chamber 112 and is led into the carbonization chamber 113 through the gas inlet 113a connected to the upper part of the carbonization chamber 113.

[0023] The combustion gas led into the carbonization chamber 113 flows while heating the carbonization boxes 130 and the material to be carbonized W through at least: (i) the flow path P1 extending in the height direction between the front surface 120a of the partition wall 120 and each carbonization box 130 and the flow path P4 extending in the front-rear direction between the bottom surface 110d of the container 110 and each carbonization box 130; (ii) the flow path P3 extending in the front-rear direction between the ceiling surface 110c of the container 110 and each carbonization box 130 and the flow path P2 extending in the height direction between the front surface 110a of the container 110 and each carbonization box 130; (iii) the flow path between the side surface of the container 110 and the carbonization box 130; and (iv) the flow path between the carbonization boxes 130. And in the process of the high-temperature combustion gas heating the material to be carbonized W, the material to be carbonized W is carbonized by dry distillation. At this time, dry distillation gas containing combustible components is generated from the material to be carbonized W.

[0024] The combustion gas that has heated the carbonization boxes 130 and the material to be carbonized W is led to the gas outlet 113b connected to the lower part of the carbonization chamber 113.

[0025] The combustion gas led to the gas outlet 113b is discharged to the outside of the carbonization furnace 100 through the exhaust flow path Pe formed inside the chimney 140. At this time, since the exhaust flow path Pe extends in the vertical direction, the combustion gas is drawn into the gas outlet 113b due to the chimney effect. Note that the chimney effect is a phenomenon caused by the exhaust flow path Pe extending in the vertical direction. Therefore, it is only necessary to have an exhaust flow path Pe that extends in the vertical direction and whose lower part communicates with the gas outlet 113b. The structure in which the exhaust flow path Pe is formed is not limited to the chimney 140.

[0026] In order to prevent the dry distillation gas generated from the material to be carbonized W from accumulating inside each carbonization box 130, at least one communication hole may be formed in each carbonization box 130 to communicate the inside and the outside of the carbonization box 130. At least one communication hole is formed, for example, by making the wall surface of the carbonization box 130 mesh-like.

[0027] <Regarding the Arrangement of the Gas Inlet and Gas Outlet> As described above, the high-temperature combustion gas generated by the flame FL flows in the order of the gas inlet 113a, the carbonization chamber 113, and the gas outlet 113b, and finally is discharged to the outside of the carbonization furnace 100 through the exhaust passage Pe. At this time, the gas inlet 113a is connected to the upper part of the carbonization chamber 113, and the gas outlet 113b is connected to the lower part of the carbonization chamber 113. Further, the gas inlet 113a and the gas outlet 113b are arranged so as to sandwich each carbonization box 130 in the front-rear direction (specifically, the gas inlet 113a is located behind each carbonization box 130, and the gas outlet 113b is located in front of each carbonization box 130). By arranging the gas inlet 113a and the gas outlet 113b in this way, the high-temperature combustion gas generally flows from the upper rear part to the lower front part in the carbonization chamber 113. Therefore, the temperature difference in the vertical direction in the carbonization chamber 113 can be reduced. As a result, the carbonization of the material to be carbonized W accommodated in the carbonization box 130 installed in the carbonization chamber 113 can be performed evenly.

[0028] Since the gas inlet 113a is connected to the upper part of the carbonization chamber 113 from the viewpoint of flowing the combustion gas from above to below, the position of the gas inlet 113a is preferably set in the following range, for example. That is, in the height direction, when the position of the ceiling surface 110c of the container 110 is 100% and the position of the bottom surface 110d of the container 110 is 0%, the position of the gas inlet 113a is in the range of 60% - 100%, preferably in the range of 70% - 100%. Note that the phrase "in the range of X1% - X2%" here does not only mean that the gas inlet 113a is formed over the entire range of X1% - X2%, but also means that a gas inlet 113a of an appropriate size may be formed in any range of X1% - X2%.

[0029] In addition, since the gas outlet 113b is connected to the lower part of the carbonization chamber 113 from the viewpoint of flowing the combustion gas from above downward, the position of the gas outlet 113b is preferably set in the following range, for example. That is, the position of the gas outlet 113b is in the range of 0% to 40%, preferably in the range of 0% to 30%. Note that the phrase "in the range of X3% to X4%" as used herein does not merely mean that the gas outlet 113b is formed over the entire range of X3% to X4%, but also means that a gas outlet 113b of an appropriate size may be formed in any range of X3% to X4%.

[0030] In addition, when the gas inlet 113a and the gas outlet 113b are provided in a predetermined range, the carbonization box 130 is preferably located between the gas inlet 113a and the gas outlet 113b in the height direction. Specifically, the position of the upper surface of the carbonization box 130 overlaps with the gas inlet 113a (the range where the gas inlet 113a is provided) or is below the gas inlet 113a in the height direction, and the position of the lower surface of the carbonization box 130 overlaps with the gas outlet 113b (the range where the gas outlet 113b is provided) or is above the gas outlet 113b in the height direction, which is preferable. As a result, the combustion gas flowing from above downward through the carbonization chamber 113 will surely come into contact with the carbonization box 130.

[0031] <Regarding variations in the arrangement of a plurality of carbonization boxes> Some embodiments regarding variations in the arrangement of a plurality of carbonization boxes 130 will be described. In any case, the set of a plurality of carbonization boxes 130 is arranged with a certain interval between the front surface 110a, the ceiling surface 110c, and the bottom surface 110d of the container 110, and the front surface 120a of the partition wall 120.

[0032] <<Embodiment 1>> As shown in FIGS. 1 and 2, the substantially rectangular parallelepiped-shaped carbonization boxes 130 are arranged at intervals in the width direction. The retort box 130 having a substantially rectangular parallelepiped shape is arranged at intervals in the height direction between the ceiling surface 110c of the container 110 and between the bottom surface 110d. The intervals from the upper surface of each retort box 130 to the ceiling surface 110c of the container 110 (Z1 in FIG. 1), and the intervals from the lower surface of each retort box 130 to the bottom surface 110d of the container 110 (Z2 in FIG. 1) are set to be about the same. Thereby, a sufficient amount of combustion gas can flow through both the flow path P3 and the flow path P4. Further, the retort box 130 having a substantially rectangular parallelepiped shape is arranged at intervals in the front-rear direction between the front surface 110a of the container 110 and between the front surface 120a of the partition wall 120. The interval from the rear surface of each retort box 130 to the front surface 120a of the partition wall 120 (X1 in FIG. 1) is set to be larger than the interval from the front surface of each retort box 130 to the front surface 110a of the container 110 (X2 in FIG. 1). Thereby, a sufficient amount of combustion gas can flow through the flow path P4 located at a position farther from the gas inlet 113a than the flow path P3 via the flow path P1.

[0033] <<Example 2>> As shown in FIGS. 3 and 4, the retort boxes 130 having a substantially rectangular parallelepiped shape are arranged at intervals in the front-rear direction. The retort box 130 located at the foremost part is arranged at an interval in the front-rear direction between the front surface 110a of the container 110. The retort box 130 located at the rearmost part is arranged at an interval in the front-rear direction between the front surface 120a of the partition wall 120. Each interval between the retort boxes 130 adjacent to each other in the front-rear direction is set to be larger as it is closer to the front surface 110a of the container 110. In the case of FIG. 3, X1 < X2 < X3. Thereby, a sufficient amount of combustion gas can also flow through the flow path between the retort boxes 130 located at a position away from the gas inlet 113a.

[0034] <<Example 3>> As shown in FIGS. 5 and 6, the retort boxes 130 having a substantially rectangular parallelepiped shape are arranged at intervals in the height direction. The retorting box 130 located at the uppermost part is arranged with a space in the height direction between it and the ceiling surface 110c of the container 110. The retorting box 130 located at the lowermost part is arranged with a space in the height direction between it and the bottom surface 110d of the partition wall 120. Each space between adjacent retorting boxes 130 in the height direction is set to be larger as it is closer to the bottom surface 110d of the container 110. In the case of FIG. 5, Z1 < Z2 < Z3. As a result, a sufficient amount of combustion gas can also flow through the flow path between the retorting boxes 130 located at a position far from the gas inlet 113a.

[0035] <Regarding the heat receiving fins> As shown in FIGS. 7 and 8, a plurality of heat receiving fins 131 are provided on the retorting box 130. The heat receiving fin 131 is a thin plate-like member (fin) protruding outward from the outer surface of the retorting box 130. By providing the heat receiving fins 131 on the retorting box 130, the heat transfer area of the retorting box 130 increases. As a result, the retorting box 130 can efficiently receive the heat of the combustion gas. Therefore, the carbonization rate of the material to be carbonized W can be improved.

[0036] The heat receiving fins 131 extend, for example, along the front-rear direction. However, the extending direction of the heat receiving fins 131 can be appropriately changed according to the flow direction of the combustion gas. In other words, by appropriately setting the extending direction of the heat receiving fins 131, the flow of the combustion gas can also be controlled to a certain extent.

[0037] <<Modification Example 1>> The combustion chamber 112 and the retorting chamber 113 do not necessarily have to be formed by the container 110 and the partition wall 120. For example, a first container corresponding to the combustion chamber 112 and a second container corresponding to the retorting chamber 113 are prepared, and these containers are arranged adjacent to each other in the front-rear direction, and the combustion chamber 112 and the retorting chamber 113 may be formed by communicating these containers at a predetermined portion (a portion corresponding to the gas inlet 113a).

[0038] <<Modification Example 2>> Although the gap formed between the upper end 121 of the partition wall 120 and the ceiling surface 110c of the container 110 functions as the gas inlet 113a, the upper end 121 of the partition wall 120 may be connected to the ceiling surface 110c of the container 110, and an opening penetrating the partition wall 120 in the front-rear direction may be formed in the upper part of the partition wall 120, and the opening may function as the gas inlet 113a.

[0039] <<Modification Example 3>> "Arranged adjacent to each other in the front-rear direction" or "Arranged so as to be adjacent to each other in the front-rear direction" includes cases where there are height differences or inclinations in the height direction between the combustion chamber 112 and the carbonization chamber 113, and also includes cases where there are gaps in the front-rear direction between the combustion chamber 112 and the carbonization chamber 113.

[0040] <Effects of the Present Embodiment> According to the present embodiment, the following effects can be obtained. The gas inlet 113a and the gas outlet 113b are arranged so as to sandwich the carbonization box 130 in the front-rear direction. The gas inlet 113a is connected to the upper part of the carbonization chamber 113, and the gas outlet 113b is connected to the lower part of the carbonization chamber 113. Therefore, the high-temperature combustion gas flows from above to below in the carbonization chamber 113. As a result, the temperature difference in the vertical direction in the carbonization chamber 113 can be reduced. Thereby, the carbonization of the carbide W accommodated in the carbonization box 130 installed in the carbonization chamber 113 can be performed evenly. In addition, when a plurality of carbonization boxes 130 are used, compared with the case of using one large carbonization box 130, the weight per carbonization box 130 can be reduced and the size can be made more compact. Thereby, the handling of each carbonization box 130 becomes easy. In addition, when a plurality of carbonization boxes 130 are used, due to the compactness of each carbonization box 130, the heat of the combustion gas is easily transmitted to the inside of each carbonization box 130. That is, since the surface area per volume of the carbonization box 130 in which the carbide W is accommodated increases, the heat receiving area from the combustion gas increases. Thereby, the carbonization rate of the carbide W can be improved.

[0041] In addition, it includes a container 110 with a chamber 111 formed inside, and a partition wall 120. One space of the chamber 111 separated by the partition wall 120 is a combustion chamber 112, and the other space of the chamber 111 separated by the partition wall 120 is a carbonization chamber 113. Therefore, the combustion chamber 112 and the carbonization chamber 113 can be formed with a simple structure.

[0042] In addition, a gap is formed between the partition wall 120 and the container 110 as a gas inlet 113a, or an opening is formed in the partition wall 120 as a gas inlet 113a. An opening is formed in the front surface 110a of the container 110 facing the front surface 120a of the partition wall 120 across the carbonization box 130 as a gas outlet 113b. Therefore, the gas inlet 113a and the gas outlet 113b can be formed with a simple structure by the container 110 and the partition wall 120.

[0043] In addition, it includes an exhaust flow path Pe extending downward. Since the lower part of the exhaust flow path Pe is connected to the gas outlet 113b, combustion gas is drawn into the gas outlet 113b by the chimney effect. Thereby, the flow of the combustion gas flowing toward the gas outlet 113b in the carbonization chamber 113 can be promoted.

[0044] In addition, at least one communication hole communicating the inside and the outside is formed in the carbonization box 130. Therefore, the carbonization gas generated inside the carbonization box 130 can be discharged to the outside of the carbonization box 130.

[0045] In addition, a plurality of heat receiving fins 131 protruding outward are provided on the carbonization box 130. Therefore, the heat of the combustion gas can be efficiently received. Thereby, the carbonization rate of the material to be carbonized W can be improved.

[0046] The carbonization furnace (100) according to an embodiment of the present disclosure described as above is understood as follows, for example. According to the carbonization furnace (100) according to the first aspect of the present disclosure, a combustion chamber (112) for burning fuel (F), a carbonization chamber (113) in which the material to be carbonized (W) is carbonized, and one or a plurality of carbonization boxes (130) installed in the carbonization chamber (113) and accommodating the material to be carbonized (W) are provided. The combustion chamber (112) and the carbonization chamber (113) are arranged adjacent to each other in the front-rear direction orthogonal to the vertical direction. The carbonization chamber (113) is connected to a gas inlet (113a) for taking in combustion gas from the combustion chamber (112) and a gas outlet (113b) for discharging the combustion gas. The gas inlet (113a) and the gas outlet (113b) are arranged so as to sandwich the carbonization box (130) in the front-rear direction. The gas inlet (113a) is connected to the upper part of the carbonization chamber (113), and the gas outlet (113b) is connected to the lower part of the carbonization chamber (113).

[0047] According to the carbonization furnace (100) according to this aspect, the combustion chamber (112) and the carbonization chamber (113) are arranged adjacent to each other in the front-rear direction orthogonal to the vertical direction. The carbonization chamber (113) is connected to a gas inlet (113a) for taking in combustion gas from the combustion chamber (112) and a gas outlet (113b) for discharging the combustion gas to the outside. The gas inlet (113a) and the gas outlet (113b) are arranged so as to sandwich the carbonization box (130) in the front-rear direction. The gas inlet (113a) is connected to the upper part of the carbonization chamber (113), and the gas outlet (113b) is connected to the lower part of the carbonization chamber (113). Therefore, the high-temperature combustion gas will flow from above to below in the carbonization chamber (113). Therefore, the temperature difference in the vertical direction in the carbonization chamber (113) can be reduced. As a result, the carbonization of the material to be carbonized (W) accommodated in the carbonization box (130) installed in the carbonization chamber (113) can be performed evenly. Further, when a plurality of carbonization boxes (130) are used, compared with the case of using one large carbonization box (130), the weight per carbonization box (130) can be reduced and the size can be made more compact. As a result, the handling of each carbonization box (130) becomes easier. In addition, when a plurality of carbonization boxes (130) are used, the heat of the combustion gas can be easily transferred to the inside of each carbonization box (130) due to the compactness of each carbonization box (130). As a result, the carbonization rate of the material to be carbonized (W) can be improved.

[0048] According to the carbonization furnace (100) according to the second aspect of the present disclosure, in the first aspect, it includes a container (110) having a chamber (111) formed therein and a partition wall (120). The partition wall (120) is installed in the chamber (111), extends in the vertical direction, separates the chamber (111) in the front-rear direction, one space of the chamber (111) separated by the partition wall (120) is the combustion chamber (112), and the other space of the chamber (111) separated by the partition wall (120) is the carbonization chamber (113).

[0049] According to the carbonization furnace (100) according to this aspect, it includes a container (110) having a chamber (111) formed therein and a partition wall (120). The partition wall (120) is installed in the chamber (111), extends in the vertical direction, separates the chamber (111) in the front-rear direction, one space of the chamber (111) separated by the partition wall (120) is the combustion chamber (112), and the other space of the chamber (111) separated by the partition wall (120) is the carbonization chamber (113). Therefore, the combustion chamber (112) and the carbonization chamber (113) can be formed with a simple structure.

[0050] According to the carbonization furnace (100) according to the third aspect of the present disclosure, in the second aspect, a gap serving as the gas inlet (113a) is formed between the partition wall (120) and the container (110), or an opening serving as the gas inlet (113a) is formed in the partition wall (120), and an opening serving as the gas outlet (113b) is formed in the surface (110a) of the container (110) facing the partition wall (120) with the carbonization box (130) interposed therebetween.

[0051] According to the carbonization furnace (100) according to this aspect, a gap is formed as a gas inlet (113a) between the partition wall (120) and the container (110), or an opening is formed in the partition wall (120) as the gas inlet (113a). An opening is formed as a gas outlet (113b) on the surface (110a) of the container (110) facing the partition wall (120) across the carbonization box (130). Therefore, the gas inlet (113a) and the gas outlet (113b) can be formed with a simple structure by the container (110) and the partition wall (120).

[0052] According to the carbonization furnace (100) according to the fourth aspect of the present disclosure, in any one of the first to third aspects, an exhaust flow path (Pe) extending in the vertical direction is provided, and the lower part of the exhaust flow path (Pe) is connected to the gas outlet (113b).

[0053] According to the carbonization furnace (100) according to this aspect, an exhaust flow path (Pe) extending in the vertical direction is provided, and the lower part of the exhaust flow path (Pe) is connected to the gas outlet (113b). Therefore, combustion gas is drawn into the gas outlet (113b) by the chimney effect. Thereby, the flow of the combustion gas flowing toward the gas outlet (113b) in the carbonization chamber (113) can be promoted.

[0054] According to the carbonization furnace (100) according to the fifth aspect of the present disclosure, in any one of the first to fourth aspects, at least one communication hole for communicating the inside and the outside is formed in the carbonization box (130).

[0055] According to the carbonization furnace (100) according to this aspect, at least one communication hole for communicating the inside and the outside is formed in the carbonization box (130). Therefore, the carbonization gas generated inside the carbonization box (130) can be discharged to the outside of the carbonization box (130).

[0056] According to the carbonization furnace (100) according to the sixth aspect of the present disclosure, in any one of the first to fifth aspects, a plurality of heat receiving fins (131) protruding outward are provided on the carbonization box (130).

[0057] According to the carbonization furnace (100) according to this aspect, since the dry distillation box (130) is provided with a plurality of heat receiving fins (131) protruding outward, the heat of the combustion gas can be efficiently received. As a result, the carbonization rate of the material to be carbonized (W) can be improved.

[0058] According to the carbonization furnace (100) according to the seventh aspect of the present disclosure, in any of the second to sixth aspects, the distance from the bottom surface (110d) of the container (110) to each of the dry distillation boxes (130) is set to be approximately the same as the distance from the ceiling surface (110c) of the container (110) to each of the dry distillation boxes (130), and the distance from the partition wall (120) to each of the dry distillation boxes (130) is set to be larger than the distance from the surface (110a) of the container (110) where the gas outlet (113b) is provided to each of the dry distillation boxes (130).

[0059] According to the carbonization furnace (100) according to this aspect, the plurality of dry distillation boxes (130) are arranged at intervals in the width direction orthogonal to the vertical direction and the front-rear direction, and the distance from the bottom surface (110d) of the container (110) to each dry distillation box (130) is set to be approximately the same as the distance from the ceiling surface (110c) of the container (110) to each dry distillation box (130). Therefore, a sufficient amount of combustion gas can flow through both the region (upper region) between the ceiling surface (110c) of the container (110) and each dry distillation box (130) and the region (lower region) between the bottom surface (110d) of the container (110) and each dry distillation box (130). Further, since the distance from the partition wall (120) to each dry distillation box (130) is set to be larger than the distance from the surface (110a) of the container (110) where the gas outlet (113b) is provided to each dry distillation box (130), a sufficient amount of combustion gas can also flow through the region between the partition wall (120) and each dry distillation box (130) to the lower region located away from the gas inlet (113a) connected to the upper part of the dry distillation chamber (113).

[0060] According to the carbonization furnace (100) according to the eighth aspect of the present disclosure, in any one of the second aspect to the sixth aspect, the plurality of retort boxes (130) are arranged at intervals in the front-rear direction, and each interval between the retort boxes (130) adjacent to each other in the front-rear direction is set to be larger as it is closer to the surface (110a) of the container (110) provided with the gas outlet (113b).

[0061] According to the carbonization furnace (100) according to this aspect, since the plurality of retort boxes (130) are arranged at intervals in the front-rear direction, and each interval between the retort boxes (130) adjacent to each other in the front-rear direction is set to be larger as it is closer to the surface (110a) of the container (110) provided with the gas outlet (113b), a sufficient amount of combustion gas can also flow through the region between the retort boxes (130) located at positions far from the gas inlet (113a).

[0062] According to the carbonization furnace (100) according to the ninth aspect of the present disclosure, in any one of the second aspect to the sixth aspect, the plurality of retort boxes (130) are arranged at intervals in the vertical direction, and each interval between the retort boxes (130) adjacent to each other in the vertical direction is set to be larger as it is closer to the bottom surface (110d) of the container (110).

[0063] According to the carbonization furnace (100) according to this aspect, since the plurality of retort boxes (130) are arranged at intervals in the vertical direction, and each interval between the retort boxes (130) adjacent to each other in the vertical direction is set to be larger as it is closer to the bottom surface (110d) of the container (110), a sufficient amount of combustion gas can also flow through the region between the retort boxes (130) located at positions far from the gas inlet (113a) connected to the upper part of the retort chamber (113).

[0064] According to the carbonization furnace (100) according to the tenth aspect of the present disclosure, in any one of the first aspect to the ninth aspect, the container (110) has a connection portion used for connection with the vehicle when being loaded on the vehicle.

Description of Reference Numerals

[0065] 100 Carbonization furnace 110 Container Front of 110a Rear of 110b Ceiling surface of 110c Bottom surface of 110d Room 111 Combustion chamber 112 Carbonization chamber 113 Gas inlet 113a Gas outlet 113b Partition wall 120 Front of 120a Upper end 121 Lower end 122 Carbonization box 130 Heat-receiving fins 131 Chimney 140 Fuel F Flame FL Flow paths P1, P2 (along the height direction) Flow paths P3, P4 (along the front-rear direction) Exhaust flow path Pe

Claims

1. A combustion chamber for burning fuel, A carbonization chamber where the material to be carbonized is carbonized, One or more carbonization boxes installed in the carbonization chamber and containing the material to be carbonized, Characterized by comprising, The combustion chamber and the carbonization chamber are arranged adjacent to each other in the front-rear direction perpendicular to the vertical direction, The carbonization chamber is connected to a gas inlet for taking in combustion gas from the combustion chamber and a gas outlet for discharging the combustion gas, The gas inlet and the gas outlet are arranged so as to sandwich the carbonization box in the front-rear direction, The gas inlet is connected to the upper part of the carbonization chamber, The gas outlet is connected to the lower part of the carbonization chamber Carbonization furnace.

2. A container with a chamber formed inside, A partition wall, Characterized by comprising, The partition wall, Is installed in the chamber, Extends in the vertical direction, Separates the chamber in the front-rear direction, One space of the chamber separated by the partition wall is the combustion chamber, The other space of the chamber separated by the partition wall is the carbonization chamber The carbonization furnace according to Claim 1.

3. A gap serving as the gas inlet is formed between the partition wall and the container, or an opening serving as the gas inlet is formed in the partition wall, An opening serving as the gas outlet is formed on the surface of the container facing the partition wall across the carbonization box The carbonization furnace according to Claim 2.

4. Comprising an exhaust flow path extending in the vertical direction, The lower part of the exhaust flow path is connected to the gas outlet The carbonization furnace according to Claim 1.

5. At least one communication hole for communicating the inside and the outside is formed in the carbonization box The carbonization furnace according to Claim 1.

6. A plurality of heat receiving fins protruding outward are provided on the carbonization box The carbonization furnace according to Claim 1.

7. The distance from the bottom surface of the container to each carbonization box is set to be approximately the same as the distance from the ceiling surface of the container to each carbonization box, The distance from the partition wall to each carbonization box is set to be larger than the distance from the surface of the container provided with the gas outlet to each carbonization box The carbonization furnace according to Claim 2.

8. The plurality of carbonization boxes are arranged side by side with spaces therebetween in the front-rear direction, Each interval between the carbonization boxes adjacent to each other in the front-rear direction is set to be larger as it is closer to the surface of the container provided with the gas outlet The carbonization furnace according to Claim 2.

9. The plurality of carbonization boxes are arranged side by side with spaces therebetween in the vertical direction, Each interval between the retort boxes adjacent to each other in the vertical direction is set to be larger as it is closer to the bottom surface of the container. The carbonization furnace according to claim 2.

10. The container has a connection part used for connection with the vehicle when being loaded on the vehicle. The carbonization furnace according to claim 2.

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