Furnace equipment

Abstract

To provide a transport device and furnace equipment capable of performing drying of a carbonizable material during a process of transporting the carbonizable material to a carbonization furnace.SOLUTION: A transport device 200 for transporting a carbonizable material W to a carbonization furnace 100 comprises: an inner pipe 211 defining therein a transportation space Sa connected to the carbonization furnace 100; an outer pipe 212 in which the inner pipe 211 is installed and which defines an enclosed space Sb between the inner pipe 211 and the outer pipe 212; and a transport mechanism 220 installed in the transportation space Sa for transporting the carbonizable material W to the carbonization furnace 100. A heat medium is introduced into the enclosed space Sb.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present disclosure relates to a conveying device and a furnace facility.

Background Art

[0002] There is known a carbonization device that produces biomass fuel by carbonizing a woody biomass raw material (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The carbonization device described in Patent Document 1 is configured to be loadable on a movable trailer. However, in the case of a mobile carbonization device, from the viewpoint of ease of transportation, it is required to configure the carbonization device with a smaller number of devices or to make each device more compact, and there is a possibility that a drying chamber for performing only drying cannot be prepared separately from the carbonization furnace. In addition, in order to increase the productivity of the carbide, it is desirable to carry out the drying process without affecting the carbonization process.

[0005] The present disclosure has been made in view of such circumstances, and an object thereof is to provide a conveying device and a furnace facility capable of drying a material to be carbonized in the process of conveying the material to be carbonized to a carbonization furnace.

Means for Solving the Problems

[0006] In order to solve the above problems, the conveying device and the furnace facility of the present disclosure employ the following means. A transport device according to an aspect of the present disclosure is a transport device that transports a carbide to a carbonization furnace, and includes an inner transport container that defines a transport space inside that is connected to the carbonization furnace, an outer transport container that is installed inside the inner transport container and defines an enclosed space between the inner transport container, and a transport mechanism that is installed in the transport space and transports the carbide to the carbonization furnace. A heat medium is introduced into the enclosed space.

[0007] In addition, a furnace facility according to an aspect of the present disclosure includes the above-described transport device and the carbonization furnace that carbonizes the carbide by heating it. The heat medium is a fluid discharged from the carbonization furnace.

Advantages of the Invention

[0008] According to the present disclosure, drying of the carbide can be carried out in the process of transporting the carbide to the carbonization furnace.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Modes for Carrying Out the Invention

[0010] Hereinafter, a transport device and a furnace facility according to an embodiment of the present disclosure will be described with reference to the drawings.

[0011] The furnace facility 10 according to an embodiment of the present disclosure is a facility for producing biochar using a carbonizable material W such as woody biomass as a raw material or a facility for producing biofuel.

[0012] As shown in FIGS. 1 and 2, the furnace facility 10 is of a mobile type that can be loaded on a vehicle 1 such as a truck. The furnace facility 10 includes a carbonization furnace 100 and a conveying device 200.

[0013] The carbonization furnace 100 is a furnace that heats and carbonizes the input carbonizable material W. As shown in FIGS. 3 and 4, the carbonization furnace 100 includes a container 120, a lid 130, a floor 140, and a chimney 150.

[0014] The container 120 is a rectangular parallelepiped-shaped metal member in which a furnace space S0 is formed inside and the upper surface is open. Note that the shape of the container 120 is not limited to a rectangular parallelepiped shape. Also, the material of the container 120 is not limited to metal. The container 120 is provided with a carbonization furnace fixing portion (not shown) used for connection and fixation to the vehicle 1.

[0015] The container 120 has a bottom 121 and a peripheral wall 122. The bottom 121 is a substantially square plate-like portion that extends in the horizontal plane (in the case of FIGS. 3 and 4, the front-rear direction and the width direction). The peripheral wall 122 is a wall erected upward from the entire peripheral edge of the bottom 121. The container 120 is configured by integrating the bottom 121 and the peripheral wall 122.

[0016] At least one intake opening 122a is formed in the peripheral wall 122. The intake opening 122a is an opening (through hole) that communicates the upper space S1 with the outside of the container 120, and combustion air (air outside the container 120) can be taken into the upper space S1 from the outside of the container 120 through the intake opening 122a. In the case of FIG. 3, the intake opening 122a is a rectangular opening extending in the front-rear direction and is formed at the upper parts of two walls facing each other in the width direction of the peripheral wall 122.

[0017] A plurality of exhaust portions 122b are formed in the peripheral wall 122. The exhaust portion 122b is an opening (through-hole) that communicates the lower space S2 with the outside of the container 120. The high-temperature gas (including the dry distillation gas and steam generated from the carbide W and the unreacted combustion air) generated inside the container 120 is led to the outside of the container 120 (specifically, the surrounding space Sb of the conveying device 200 described later) as a heat medium through the exhaust portion 122b. In the following description, the term "heat medium" may also be referred to as "heat fluid". In the case of FIG. 3, the exhaust portion 122b is a circular opening and is formed at the lower parts of two walls facing each other in the width direction of the peripheral wall 122.

[0018] During the operation of the carbonization furnace 100, a lid 130 is attached to the opening on the upper surface of the container 120. The lid 130 is a substantially rectangular plate-like member that extends in the horizontal plane. When the lid 130 attached to the upper part of the container 120 closes the opening on the upper surface of the container 120, the furnace space S0 formed in the container 120 becomes a closed space.

[0019] As shown in FIG. 2, an input opening 131 is formed in the lid 130. The input opening 131 is an opening (through-hole) that communicates the upper and lower surfaces of the lid 130, and the carbide W as a raw material conveyed by the conveying device 200 can be input into the upper space S1 through the input opening 131. In the case of FIG. 2, the input opening 131 is a rectangular opening and is formed at the front part of the lid 130. Note that the position of the input opening 131 depends on the positional relationship with the conveying device 200, and it does not necessarily have to be at the front part of the lid 130.

[0020] As shown in FIGS. 3 and 4, a floor 140 is attached inside the container 120. The bed 140 is a deposition bed where the carbide material W and / or carbide deposits. The bed 140 is a substantially rectangular plate-like member that extends in a horizontal plane and is provided, for example, at a height position of several tens of centimeters from the bottom 121 of the container 120. The bed 140 divides the furnace space S0 in the vertical direction. Of the furnace space S0 partitioned by the bed 140, the upper space is the upper space S1 and the lower space is the lower space S2. The upper space S1 is a space for storing the carbide material W and / or carbide. The lower space S2 is a space / flow path through which a hot fluid containing combustion exhaust gas and water vapor flows.

[0021] A communication part 141 is formed in the bed 140. The communication part 141 is a part that communicates the upper space S1 and the lower space S2. As the communication part 141, a large number of holes (through holes) formed in the bed 140 are exemplified. The purpose of providing the communication part 141 is to guide the hot fluid from the upper space S1 to the lower space S2 without dropping the carbide material W or carbide stored in the upper space S1 into the lower space S2. Therefore, the specific shape and number of the communication part 141 are not particularly limited as long as the purpose can be achieved.

[0022] Chimneys 150 are provided at the front and rear of the container 120, respectively. The chimney 150 extends in the vertical direction along the side surface of the container 120. For example, the uppermost opening (the outlet of the exhaust flow path P1 described later) is located at a position higher than the lid 130. Note that the position where the chimney 150 is provided and the number of chimneys 150 can be arbitrarily changed.

[0023] An exhaust flow path P1 is formed inside the chimney 150. The exhaust flow path P1 is connected at the lower part to the lower space S2 and at the upper part to the outside of the container 120. That is, the exhaust flow path P1 is a flow path that communicates the lower space S2 with the outside of the container 120, and is also a flow path for discharging the hot fluid guided from the upper space S1 to the lower space S2 to the outside of the container 120. In addition, in order to promote the flow of the hot fluid, a device (not shown) that generates a flow, such as a fan, may be arranged in the exhaust flow path P1 (for example, at the lower part of the chimney 150).

[0024] As shown in FIGS. 1 and 2, the carbide furnace 100 has a carbide W as a raw material conveyed by a conveying device 200. In addition, the conveying device 200 is a device configured to carry out the drying of the carbide W simultaneously with the conveyance of the carbide W in addition to the conveyance of the carbide W. Hereinafter, an example of its specific structure will be described.

[0025] As shown in FIG. 5, the conveying device 200 includes a double pipe 210 and a screw conveyor (conveying mechanism) 220.

[0026] The double pipe 210 has an inner pipe (inner conveying container) 211 arranged concentrically and an outer pipe (outer conveying container) 212 having an outer diameter larger than that of the inner pipe 211. The inner pipe 211 is a circular pipe with the axis C as the central axis, and defines a conveying space Sa inside. The outer pipe 212 is a circular pipe with the common axis C with the inner pipe 211 as the central axis, and houses the inner pipe 211 in the space defined inside. At this time, the space defined by the inner peripheral surface of the outer pipe 212 and the outer peripheral surface of the inner pipe 211 is defined as the surrounding space Sb. That is, the surrounding space Sb surrounds the conveying space Sa around the axis C.

[0027] The screw conveyor 220 is installed in the conveying space Sa. The screw conveyor 220 has a shaft 221 extending along the axis C and spiral blades 222 provided on the outer peripheral surface of the shaft 221. A drive unit (not shown) is connected to the shaft 221 of the screw conveyor 220. As a result, the screw conveyor 220 is rotationally driven about the axis C.

[0028] As shown in FIGS. 1 and 2, the conveying device 200 configured as described above is installed so as to surround the carbonization furnace 100. Note that the conveying device 200 is fixed and supported with respect to at least one of the carbonization furnace 100, the vehicle 1, and the ground by a conveying device fixing portion (not shown). Further, the conveying device 200 is configured to be divisible, and may be loaded on the vehicle 1 together with the carbonization furnace 100 in a divided state during transportation.

[0029] The conveying device 200 has a first end portion 201 and a second end portion 202. The first end portion 201 is the upstream end of the conveying device 200 and is connected to a pulverizing device 310 that pulverizes the material to be carbonized W. The pulverizing device 310 is installed on the ground during operation (in the state of FIG. 1), but may be loaded on the vehicle 1 together with the carbonization furnace 100 and the conveying device 200 during transportation. Alternatively, the pulverizing device 310 may be omitted. The second end portion 202 is the downstream end of the conveying device 200 and is inserted into the inside of the container 120 (here, the upper space S1) through the charging opening 131 of the lid 130.

[0030] At this time, the conveying space Sa connects the discharge port of the pulverizing device 310 (the portion where the material to be carbonized W is discharged) and the upper space S1 of the carbonization furnace 100. As a result, the material to be carbonized W discharged from the pulverizing device 310 can be conveyed to the upper space S1 of the carbonization furnace 100 by the screw conveyor 220.

[0031] On the other hand, a heat fluid is guided from the lower space S2 of the carbonization furnace 100 to the surrounding space Sb. Specifically, the heat fluid is guided from the lower space S2 to the surrounding space Sb by the following configuration. That is, as shown in FIGS. 2 and 6, the conveying device 200 includes a plurality of connecting pipes 230. One end of each connection pipe 230 is connected to the outer pipe 212 of the double pipe 210, and the other end is connected to the exhaust part 122b of the container 120. A connection flow path P2 is defined inside each connection pipe 230, and the surrounding space Sb and the lower space S2 are connected by the connection flow path P2. As a result, the hot fluid is configured to be guided from the lower space S2 to the surrounding space Sb. Note that the hot fluid guided into the surrounding space Sb finally flows into the upper space S1 of the carbonization furnace 100 from the second end part 202 of the conveying device 200.

[0032] According to the present embodiment, the following effects can be obtained. Since the heat medium is guided into the surrounding space Sb, the temperature of the conveying space Sa surrounded by the surrounding space Sb can be raised by the heat of the heat medium. As a result, the carbide W being conveyed by the screw conveyor 220 installed in the conveying space Sa can be dried. Therefore, the carbide W can be dried in the process of conveying the carbide W to the carbonization furnace 100.

[0033] In addition, by using the hot fluid discharged from the carbonization furnace 100 as the heat medium, the heat of the hot fluid is reused to dry the carbide W, so that the thermal efficiency of the furnace equipment 10 can be improved.

[0034] In addition, since the conveying device 200 is installed so as to surround the carbonization furnace 100, the distance of the conveying path can be efficiently ensured. That is, the drying time can be efficiently ensured.

[0035] In addition, since the conveying device 200 is configured to be divisible, when the conveying device 200 is transported, it is easy to handle by dividing the conveying device 200. For example, the divided conveying device 200 can be accommodated inside the container 120 of the carbonization furnace 100.

[0036] <Modification example> As shown in FIG. 7, an electric heater (heat source) 240 may be provided along the outer peripheral surface of the outer pipe 212 of the double pipe 210. In the case of FIG. 7, the electric heater 240 is of a linear type and is spirally wound around the outer peripheral surface of the outer pipe 212. Thereby, a heat source can be easily installed, and the conveyance space Sa can be further heated by the heat of the electric heater 240. Note that the heat source does not necessarily have to be the electric heater 240 and can be appropriately changed according to the required amount of heat.

[0037] Further, the conveyance space Sa and the surrounding space Sb do not necessarily have to be defined by the double pipe 210, and any shaped conveyance container can be adopted as long as the conveyance space Sa and the surrounding space Sb that surrounds the conveyance space Sa are defined. However, by adopting the double pipe 210, the conveyance space Sa and the surrounding space Sb can be easily defined.

[0038] Also, the conveying mechanism does not necessarily have to be the screw conveyor 220, and another type of conveyor (for example, a belt conveyor) may be used. However, by adopting the screw conveyor 220 as the conveying mechanism, the carbide W can be agitated during the conveyance of the carbide W. Thereby, the carbide W can be evenly dried. Also, by adopting the screw conveyor 220 as the conveying mechanism, the carbide W can be surely conveyed even on a sloped path.

[0039] The conveying device and the furnace equipment according to the present embodiment described as above are grasped as follows, for example. The conveying device (200) according to the first aspect of the present disclosure is a conveying device (200) that conveys a carbide (W) to a carbonization furnace (100), and includes an inner conveying container (211) that defines a conveying space (Sa) connected to the carbonization furnace (100) inside, an outer conveying container (212) installed inside the inner conveying container (211) and defining an enclosed space (Sb) with the inner conveying container (211), and a conveying mechanism (220) installed in the conveying space (Sa) for conveying the carbide (W) to the carbonization furnace (100). A heat medium is introduced into the enclosed space (Sb).

[0040] According to the conveying device (200) according to this aspect, an inner conveying container (211) that defines a conveying space (Sa) connected to the carbonization furnace (100) inside, an outer conveying container (212) installed inside the inner conveying container (211) and defining an enclosed space (Sb) with the inner conveying container (211), and a conveying mechanism (220) installed in the conveying space (Sa) for conveying the carbide (W) to the carbonization furnace (100) are provided. Since a heat medium is introduced into the enclosed space (Sb), the temperature of the conveying space (Sa) inside the inner conveying container (211) surrounded by the enclosed space (Sb) can be raised by the heat of the heat medium. As a result, the carbide (W) being conveyed by the conveying mechanism (220) installed in the conveying space (Sa) can be dried. Therefore, the carbide (W) can be dried during the process of conveying the carbide (W) to the carbonization furnace (100).

[0041] The conveying device (200) according to the second aspect of the present disclosure is, in the first aspect, the inner conveying container (211) is the inner pipe (211) of a double pipe (210), the outer conveying container (212) is the outer pipe (212) of the double pipe (210), the conveying space (Sa) is the space inside the inner pipe (211), and the enclosed space (Sb) is the space defined by the inner pipe (211) and the outer pipe (212).

[0042] According to the conveying device (200) according to this aspect, the inner conveying container (211) is the inner pipe (211) of the double pipe (210), the outer conveying container (212) is the outer pipe (212) of the double pipe (210), the conveying space (Sa) is the space inside the inner pipe (211), and the surrounding space (Sb) is the space defined by the inner pipe (211) and the outer pipe (212). Therefore, the double pipe (210) can simply define the conveying space (Sa) and the surrounding space (Sb).

[0043] In the conveying device (200) according to the third aspect of the present disclosure, in the second aspect, the conveying mechanism (220) is a screw conveyor installed along the central axis (C) of the inner pipe (211).

[0044] According to the conveying device (200) according to this aspect, since the conveying mechanism (220) is a screw conveyor installed along the central axis (C) of the inner pipe (211), the carbide (W) can be conveyed while being agitated. As a result, the carbide (W) can be dried evenly. Also, the carbide (W) can be reliably conveyed even on a sloped path.

[0045] In the conveying device (200) according to the fourth aspect of the present disclosure, in the second or third aspect, a heat source (240) is provided, and the heat source (240) is installed along the outer peripheral surface of the outer pipe (212).

[0046] According to the conveying device (200) according to this aspect, since a heat source (240) is provided and the heat source (240) is installed along the outer peripheral surface of the outer pipe (212), the heat source (240) can be simply installed, and the temperature of the conveying space (Sa) can be further increased by the heat of the heat source (240).

[0047] The furnace equipment (10) according to the fifth aspect of the present disclosure includes any one of the conveying devices (200) according to the first to fourth aspects, and the carbonization furnace (100) for carbonizing by heating the carbide (W), and the heat medium is the fluid discharged from the carbonization furnace (100).

[0048] According to the furnace facility (10) according to this aspect, the above-described conveying device (200) and the carbonization furnace (100) for carbonizing by heating the carbide (W) are provided. Since the heat medium is the fluid discharged from the carbonization furnace (100), the heat of the fluid is reused to dry the carbide (W), so that the thermal efficiency as a furnace facility can be improved.

[0049] The furnace facility (10) according to the sixth aspect of the present disclosure is, in the fifth aspect, the conveying device (200) is installed so as to surround the carbonization furnace (100).

[0050] According to the furnace facility (10) according to this aspect, since the conveying device (200) is installed so as to surround the carbonization furnace (100), the distance of the conveying path can be efficiently secured. That is, the drying time can be efficiently secured.

[0051] The furnace facility (10) according to the seventh aspect of the present disclosure is, in the fifth aspect or the sixth aspect, the conveying device (200) is configured to be divisible.

[0052] According to the furnace facility (10) according to this aspect, since the conveying device (200) is configured to be divisible, when transporting the conveying device (200), it becomes easier to handle by dividing the conveying device (200). For example, the divided conveying device (200) can be accommodated inside the container (120) of the carbonization furnace (100).

[0053] The furnace facility (10) according to the eighth aspect of the present disclosure is, in any one of the fifth aspect to the seventh aspect, the carbonization furnace (100) has a carbonization furnace fixing portion for fixing to the vehicle (1) when mounted on the vehicle.

[0054] The furnace facility (10) according to the ninth aspect of the present disclosure is, in any one of the fifth aspect to the eighth aspect, the conveying device (200) has a conveying device fixing portion for fixing to the vehicle (1) when mounted on the vehicle.

Explanation of reference numerals

[0055] 1 Vehicle 10 Furnace equipment 100 Carbonization furnace 120 Container 121 Bottom 122 Peripheral wall 122a Intake opening 122b Exhaust part 130 Lid 131 Input opening 140 Floor 141 Communication part 150 Chimney 200 Conveyor 201 First end 202 Second end 210 Double pipe 211 Inner pipe (inner transport container) 212 Outer pipe (outer transport container) 220 Screw conveyor (transport mechanism) 221 Shaft 222 Spiral blade 230 Connecting pipe 240 Electric heater (heat source) 310 Crushing device C Axis P1 Exhaust flow path P2 Connecting flow path S0 Furnace space S1 Upper space S2 Lower space Sa Transport space Sb Enclosing space W Material to be carbonized

Claims

1. A conveying device for conveying a material to be carbonized to a carbonization furnace, comprising: an inner conveying container defining an inner conveying space connected to the carbonization furnace therein; an outer conveying container installed inside the inner conveying container and defining an enclosed space therebetween; a conveying mechanism installed in the conveying space for conveying the material to be carbonized to the carbonization furnace; wherein a heat medium is introduced into the enclosed space Conveying device.

2. The inner conveying container is the inner pipe of a double pipe; The outer conveying container is the outer pipe of the double pipe; The conveying space is the space inside the inner pipe; The enclosed space is the space defined by the inner pipe and the outer pipe The conveying device according to Claim 1.

3. The conveying mechanism is a screw conveyor installed along the central axis of the inner pipe The conveying device according to Claim 2.

4. Comprising a heat source, The heat source is installed along the outer peripheral surface of the outer pipe The conveying device according to Claim 2.

5. The conveying device according to any one of Claims 1 to 4, and the carbonization furnace for carbonizing the material to be carbonized by heating, wherein the heat medium is a fluid discharged from the carbonization furnace Furnace equipment.

6. The conveying device is installed so as to surround the carbonization furnace The furnace equipment according to Claim 5.

7. The conveying device is configured to be divisible The furnace equipment according to Claim 5.

8. The carbonization furnace has a carbonization furnace fixing portion for fixing to a vehicle when mounted on the vehicle The furnace equipment according to Claim 5.

9. The conveying device has a conveying device fixing portion for fixing to a vehicle when mounted on the vehicle The furnace equipment according to Claim 5.

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