A vertical pulverized coal pyrolysis furnace

Abstract

The present invention relates to a vertical pulverized coal pyrolysis furnace, belonging to the technical field of pulverized coal pyrolysis equipment, which includes an outer barrel. An inner barrel is vertically arranged in the outer barrel, and an annular cavity is formed between the inner barrel and the outer barrel. Heating tubes are arranged in a spiral shape in the annular cavity. A plurality of placement trays are horizontally arranged at equal intervals inside the inner barrel. The placement trays are connected to the inner barrel, and a sealing plate is horizontally arranged at the mouth of the inner barrel. By using the annular cavity between the inner barrel and the outer barrel in cooperation with the spiral heating tubes, the present invention can effectively increase the flow length of air flow heating, enabling the heat in the air flow to fully exchange heat with the pulverized coal, increasing the time for hot gas to heat the pulverized coal and reducing heat energy loss. When used in cooperation with the plurality of placement trays inside the inner barrel, it can not only avoid uneven heating caused by the accumulation of pulverized coal, but also pyrolyze a large amount of pulverized coal simultaneously, further improving the efficiency of pulverized coal pyrolysis. The vertical pulverized coal pyrolysis furnace of the present invention has high efficiency, low heat energy loss, and strong practicability, and is worthy of promotion.

Description

Technical Field

[0001] The present invention belongs to the technical field of pulverized coal pyrolysis equipment, and particularly relates to a vertical pulverized coal pyrolysis furnace. Background Art

[0002] Pulverized coal can rapidly reach the final temperature for thermal decomposition at a heating rate greater than 100 °C / s. When the heating rate of pulverized coal is higher than 106 °C / s, it is also called flash pyrolysis. When performing thermal decomposition on pulverized coal, a pyrolysis furnace is generally used for processing. There are mainly two methods for using a pyrolysis furnace to pyrolyze pulverized coal. One is to pyrolyze pulverized coal in a fluidized bed or entrained flow bed in a self-heating or externally heated manner. The other is to use a circulating solid heat carrier to mix with pulverized coal to achieve pyrolysis. However, when pyrolyzing pulverized coal in a fluidized bed or entrained flow bed, the heat supplied by the fluidized bed or entrained flow bed, either self-supplied or externally supplied, cannot be recycled to heat the pulverized coal, resulting in high energy consumption for pulverized coal pyrolysis and increasing the cost of pulverized coal pyrolysis. Therefore, when the existing pyrolysis furnace pyrolyzes pulverized coal, most of them use the method of mixing a circulating solid heat carrier with pulverized coal to achieve pyrolysis.

[0003] When using the method of mixing a circulating solid heat carrier with pulverized coal to pyrolyze pulverized coal, generally, the pulverized coal formed by mixing the circulating solid heat carrier with pulverized coal is placed in a pyrolysis furnace for pyrolysis. However, the existing pyrolysis furnace stacks the pulverized coal inside it. When pyrolyzing by air flow heating, the internal heating effect of the stacked pulverized coal is poor, resulting in poor pyrolysis effect of the pulverized coal.

[0004] Currently, in order to improve the pyrolysis effect of pulverized coal, some enterprises can only reduce the stacking thickness of pulverized coal in the pulverized coal pyrolysis furnace to make the internal and external heating of the stacked pulverized coal as uniform as possible. However, reducing the stacking thickness of pulverized coal in the pulverized coal pyrolysis furnace will greatly reduce the amount of pulverized coal pyrolyzed in the pulverized coal pyrolysis furnace at one time, and the flow rate of the air flow heating is relatively fast, resulting in the heat in the air flow not being effectively absorbed by the pulverized coal, greatly reducing the utilization rate of the air flow heating, resulting in low pulverized coal pyrolysis efficiency and high heat energy loss. Summary of the Invention

[0005] In view of this, the present invention provides a vertical pulverized coal pyrolysis furnace. By using the annular cavity between the inner barrel and the outer barrel and the spiral heating pipe in cooperation, it can effectively increase the flow length of the air flow heating, enable the heat in the air flow to fully exchange heat with the pulverized coal, increase the heating time of the hot air to the pulverized coal and reduce the heat energy loss. Then, in cooperation with multiple placement trays inside the inner barrel, it can not only avoid uneven heating caused by pulverized coal accumulation, but also pyrolyze a large amount of pulverized coal at the same time, further improving the efficiency of pulverized coal pyrolysis.

[0006] The technical solution of the present invention is: a vertical pulverized coal pyrolysis furnace, including an outer barrel, an inner barrel, heating pipes, a plurality of placement trays, and a sealing plate; the inner barrel is vertically arranged in the outer barrel, the inner barrel is coaxial with the outer barrel, the bottom of the inner barrel is fixedly connected to the outer barrel, the mouth of the inner barrel extends out of the outer barrel, the inner side of the mouth of the outer barrel is fixedly and sealingly connected to the inner barrel, an annular cavity is formed between the inner barrel and the outer barrel, the heating pipes are arranged in a spiral shape in the annular cavity, the heating pipes are fixedly connected to the inner barrel, one end of the heating pipe passes through one side of the outer barrel and is communicated with the output port of an external heating device, and the other end passes through the other side of the outer barrel and is communicated with the input port of the external heating device; a plurality of placement trays are horizontally arranged at equal intervals inside the inner barrel, the placement trays are connected to the inner barrel, the sealing plate is horizontally arranged at the mouth of the inner barrel, and the sealing plate is detachably and sealingly connected to the mouth of the inner barrel.

[0007] Preferably, an air inlet pipe is horizontally penetrated through the top of one side of the outer barrel, the air inlet pipe is fixedly connected to the outer barrel, one end of the air inlet pipe passes through the outer barrel and is communicated with one end of the heating pipe, and the other end is communicated with the output port of an external heating device through a pipeline.

[0008] Preferably, an air outlet pipe is horizontally penetrated through the bottom of the other side of the outer barrel, the air outlet pipe is fixedly connected to the outer barrel, one end of the air outlet pipe passes through the outer barrel and is communicated with the other end of the heating pipe, and the other end is communicated with the input port of an external heating device through a pipeline.

[0009] Preferably, a drain pipe is horizontally arranged at the bottom of the side of the outer barrel away from the air outlet pipe, the drain pipe is fixedly connected to the outer barrel, one end of the drain pipe passes through the outer barrel and is communicated with its interior, and a sealing cover is arranged at the other end, and the sealing cover is detachably and sealingly connected to the drain pipe.

[0010] Preferably, the longitudinal sections of the inner barrel and the outer barrel are conical, the diameters of the inner barrel and the outer barrel at the end close to the sealing plate are larger than those at the other end, and the diameters of the placement trays gradually decrease from top to bottom.

[0011] Preferably, an exhaust pipe is vertically penetrated through the sealing plate, the exhaust pipe is fixedly connected to the sealing plate, one end of the exhaust pipe is communicated with the interior of the inner barrel, and a one-way valve is fixedly arranged at the other end.

[0012] Preferably, a fixing ring is horizontally arranged directly above the sealing plate, the fixing ring is coaxial with the sealing plate, a plurality of fixing columns are vertically arranged evenly around between the fixing ring and the sealing plate, one end of the fixing column is fixedly connected to the fixing ring, the other end is fixedly connected to the sealing plate, and the sealing plate is threadedly and sealingly connected to the inner side of the mouth of the inner barrel.

[0013] Preferably, a vertical column is arranged inside the inner barrel, the vertical column is coaxial with the inner barrel, one end of the vertical column is threadedly and fixedly connected to the inner bottom of the inner barrel, a bent rod is vertically arranged directly below the sealing plate at the other end, one end of the bent rod is fixedly connected to the vertical column, the other end is inclined upward, and a plurality of arc-shaped grooves are continuously formed on the side of the bent rod close to the placement tray, and the placement tray is sleeved and fixed on the vertical column.

[0014] Preferably, a conical support seat is vertically provided at the bottom of the outer barrel. The conical support seat is coaxial with the outer barrel. The diameter of the top of the conical support seat is smaller than that of the bottom. The top of the conical support seat is fixedly connected to the outer barrel. A rubber pad is fixedly provided at the bottom of the conical support seat. Two rotating shafts are horizontally provided on both sides of the top of the outer barrel. One end of each rotating shaft is fixedly connected to the outer barrel. A U-shaped handle is provided outside the other ends of the two rotating shafts. The two ends of the open end of the U-shaped handle are respectively rotatably connected to the two rotating shafts.

[0015] Preferably, the material of the outer barrel is polyvinyl chloride steel plate.

[0016] Compared with the prior art, a vertical pulverized coal pyrolysis furnace provided by the present invention can effectively increase the flow length of air flow heating through the annular cavity between the inner barrel and the outer barrel and the spiral heating pipe, so that the heat in the air flow can fully exchange heat with the pulverized coal, improve the heating time of hot air to pulverized coal and reduce heat energy loss. Then, in cooperation with multiple placement trays inside the inner barrel, it can not only avoid uneven heating caused by pulverized coal accumulation, but also pyrolyze a large amount of pulverized coal at the same time, further improving the pyrolysis efficiency of pulverized coal. The vertical pulverized coal pyrolysis furnace of the present invention has high efficiency, low heat energy loss and strong practicability, and is worthy of popularization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of the present invention;

[0018] Figure 2 is the structural exploded view of the present invention;

[0019] Figure 3 is the side view of the present invention;

[0020] Figure 4 is the bottom view of the present invention;

[0021] Figure 5 is the enlarged schematic view of part A of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention provides a vertical pulverized coal pyrolysis furnace. The following is a description of the present invention in conjunction with Figures 1 to 5 the structural schematic diagram.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] Pulverized coal can rapidly reach the final temperature for thermal decomposition at a heating rate greater than 100 °C / s. When the heating rate of pulverized coal is higher than 106 °C / s, it is also called flash pyrolysis. When performing thermal decomposition on pulverized coal, a pyrolysis furnace is generally used for processing. There are mainly two ways to perform thermal decomposition of pulverized coal using a pyrolysis furnace. One is to pyrolyze the pulverized coal in a fluidized bed or entrained flow bed in a self-heating or externally heated manner. The other is to use a circulating solid heat carrier to mix with the pulverized coal to achieve pyrolysis. However, when pyrolyzing pulverized coal in a fluidized bed or entrained flow bed, the heat supplied by the fluidized bed or entrained flow bed, either self-supplied or externally supplied, cannot be recycled to heat the pulverized coal, resulting in a relatively high energy consumption for pulverized coal pyrolysis and increasing the cost of pulverized coal pyrolysis. Therefore, when the existing pyrolysis furnace performs thermal decomposition on pulverized coal, most of them adopt the method of mixing a circulating solid heat carrier with the pulverized coal to achieve pyrolysis.

[0025] When using the method of mixing a circulating solid heat carrier with pulverized coal to perform pulverized coal pyrolysis, generally, the pulverized coal formed by mixing the circulating solid heat carrier with the pulverized coal is placed in a pyrolysis furnace for pyrolysis. However, the existing pyrolysis furnace stacks the pulverized coal inside it. When performing pyrolysis by supplying heat with gas flow, the internal heat absorption effect of the stacked pulverized coal is poor, resulting in a poor pyrolysis effect of the pulverized coal.

[0026] Currently, in order to improve the pyrolysis effect of pulverized coal, some enterprises can only reduce the stacking thickness of the pulverized coal in the pulverized coal pyrolysis furnace to make the internal and external heat absorption of the stacked pulverized coal as uniform as possible. However, reducing the stacking thickness of the pulverized coal in the pulverized coal pyrolysis furnace will greatly reduce the amount of pulverized coal pyrolyzed in the pulverized coal pyrolysis furnace at one time, and the flow rate of the gas flow during gas flow heating is relatively fast, resulting in the heat in the gas flow not being effectively absorbed by the pulverized coal, greatly reducing the utilization rate of gas flow heating, and leading to low pulverized coal pyrolysis efficiency and high heat energy loss.

[0027] Based on the above problems, a vertical pulverized coal pyrolysis furnace provided by an embodiment of the present invention, through the cooperation of the annular cavity between the inner barrel and the outer barrel and the spiral heating tube, can effectively increase the flow length of the air flow for heat supply, so that the heat in the air flow can fully exchange heat with the pulverized coal, improve the heating time of the hot air to the pulverized coal and reduce the heat energy loss. Then, in cooperation with the multiple placement trays inside the inner barrel, it can not only avoid uneven heating caused by the accumulation of pulverized coal, but also pyrolyze a large amount of pulverized coal at the same time, further improving the efficiency of pulverized coal pyrolysis.

[0028] Embodiment 1

[0029] As Figure 1 shown, a vertical pulverized coal pyrolysis furnace includes an outer barrel 1, an inner barrel 2, a heating tube 3, a plurality of placement trays 4, and a sealing plate 5; the inner barrel 2 is vertically arranged in the outer barrel 1, the inner barrel 2 is coaxial with the outer barrel 1, the bottom of the inner barrel 2 is fixedly connected to the outer barrel 1, the mouth of the inner barrel 2 extends out of the outer barrel 1, the inner side of the mouth of the outer barrel 1 is fixedly and hermetically connected to the inner barrel 2, an annular cavity is formed between the inner barrel 2 and the outer barrel 1, the heating tube 3 is spirally arranged in the annular cavity, the heating tube 3 is fixedly connected to the inner barrel 2, one end of the heating tube 3 passes through one side of the outer barrel 1 and is communicated with the output port of an external heat supply device, and the other end passes through the other side of the outer barrel 1 and is communicated with the input port of the external heat supply device. A plurality of placement trays 4 are horizontally arranged at equal intervals inside the inner barrel 2, the placement trays 4 are connected to the inner barrel 2, the sealing plate 5 is horizontally arranged at the mouth of the inner barrel 2, and the sealing plate 5 is detachably and hermetically connected to the mouth of the inner barrel 2.

[0030] Preferably, a fixing ring 71 is horizontally arranged directly above the sealing plate 5, the fixing ring 71 is coaxial with the sealing plate 5, and a plurality of fixing columns 72 are vertically and evenly arranged around between the fixing ring 71 and the sealing plate 5. One end of the fixing column 72 is fixedly connected to the fixing ring 71, and the other end is fixedly connected to the sealing plate 5. The sealing plate 5 is threadedly and hermetically connected to the inner side of the mouth of the inner barrel 2. By the cooperation of the fixing ring, the fixing columns and the sealing plate, it is convenient for the operator to manually rotate the fixing ring to drive the sealing plate to rotate, for the installation and disassembly of the sealing plate and the inner barrel, further improving the convenience of operating the pyrolysis furnace.

[0031] As Figure 4As shown, preferably, a conical support base 91 is vertically provided at the bottom of the outer barrel 1. The conical support base 91 is coaxial with the outer barrel 1. The diameter of the top of the conical support base 91 is smaller than that of the bottom. The top of the conical support base 91 is fixedly connected to the outer barrel 1. A rubber pad 92 is fixedly provided at the bottom of the conical support base 91. Two rotating shafts 93 are horizontally provided on both sides of the top of the outer barrel 1. One end of the rotating shaft 93 is fixedly connected to the outer barrel 1. A U-shaped handle 94 is provided outside the other ends of the two rotating shafts 93. The two ends of the open end of the U-shaped handle 94 are respectively rotatably connected to the two rotating shafts 93. By using the conical support base, the rubber pad, the rotating shafts and the U-shaped handle in cooperation, not only can the stability of the pyrolysis furnace placement be improved, but also the rubber pad can provide heat insulation protection for the outer barrel, and it is convenient for the operator to move the pyrolysis furnace, further improving the convenience of using the pyrolysis furnace.

[0032] Preferably, the material of the outer barrel 1 is polyvinyl chloride steel plate, which can keep warm, avoid heat energy dissipation, reduce heat energy loss, and at the same time avoid scalding personnel due to overheating of the outer wall.

[0033] When pyrolyzing pulverized coal, the operator manually rotates the fixed ring to drive the sealing plate to rotate. After separating the sealing plate from the inner barrel, wear heat-insulating gloves and hold the bent rod to screw the column. After separating the column from the bottom of the inner barrel, take out the column and multiple placement trays. Then evenly spread the pulverized coal to be pyrolyzed on the placement trays. After using the hoisting equipment to lift the column and multiple placement trays into the inner barrel, the operator screws the bent rod to fixedly connect the column to the bottom of the inner barrel. After connecting and sealing the sealing plate to the inner barrel, connect the inlet pipe and the outlet pipe to the output and input ports of the external heating equipment through pipes respectively. Start the external heating equipment to continuously input hot gas into the annular cavity to pyrolyze the pulverized coal. After the pulverized coal is pyrolyzed for a certain time, stop the external heating equipment and open the one-way valve on the exhaust pipe to reduce pressure and exhaust. When the pressure in the inner barrel and the annular cavity drops below the safe pressure, reinstall the sealing cover, then open the sealing plate, take out the placement trays, remove the pyrolyzed pulverized coal, and repeat the above process to place pulverized coal for pyrolysis.

[0034] Embodiment 2

[0035] In order to further improve the pyrolysis effect of pulverized coal, by using the inlet pipe, the outlet pipe, the heating pipe and the external heating equipment in cooperation, the air flow can move downward along the heating pipe from top to bottom, which can reduce the air flow velocity and fully heat the pulverized coal in the inner barrel.

[0036] Preferably, an inlet pipe 21 is horizontally penetrated through the top of one side of the outer barrel 1. The inlet pipe 21 is fixedly connected to the outer barrel 1. One end of the inlet pipe 21 passes through the outer barrel 1 and is communicated with one end of the heating pipe 3, and the other end is communicated with the output port of the external heating equipment through a pipe.

[0037] Preferably, an air outlet pipe 31 is horizontally penetrated through the bottom on the other side of the outer barrel 1. The air outlet pipe 31 is fixedly connected to the outer barrel 1. One end of the air outlet pipe 31 penetrates through the outer barrel 1 and communicates with the other end of the heating pipe 3, and the other end is communicated with the input port of an external heating device through a pipeline.

[0038] Embodiment 3

[0039] In order to further improve the convenience and service life of the pyrolysis furnace, by using the air release pipe, the sealing cover and the annular cavity in cooperation, the sealing cover can be opened as needed to release the pressure in the annular cavity.

[0040] Preferably, an air release pipe 41 is horizontally provided at the bottom on the side of the outer barrel 1 away from the air outlet pipe 31. The air release pipe 41 is fixedly connected to the outer barrel 1. One end of the air release pipe 41 penetrates through the outer barrel 1 and communicates with its interior, and a sealing cover 42 is provided at the other end. The sealing cover 42 is detachably and sealingly connected to the air release pipe 41. When the pyrolysis furnace is shut down or regularly maintained, the sealing cover is opened to release the pressure in the annular cavity, facilitating safe operation by the operator.

[0041] As Figure 3 shown, preferably, an exhaust pipe 61 is vertically penetrated through the sealing plate 5. The exhaust pipe 61 is fixedly connected to the sealing plate 5. One end of the exhaust pipe 61 communicates with the interior of the inner barrel 2, and a one-way valve 62 is fixedly provided at the other end. By using the exhaust pipe, the one-way valve and the sealing plate in cooperation, the one-way valve can be opened as needed for pyrolysis to discharge the air flow inside the inner barrel, further improving the convenience of using the pyrolysis furnace.

[0042] Embodiment 4

[0043] In order to further improve the utilization rate of heat, by using the inner barrel and the outer barrel with a conical longitudinal section in cooperation, the heat in the air flow can be gradually diffused upward, and then used in cooperation with the anti - splash plates with gradually increasing diameters.

[0044] Preferably, the longitudinal sections of the inner barrel 2 and the outer barrel 1 are conical. The diameters of the ends of the inner barrel 2 and the outer barrel 1 close to the sealing plate 5 are larger than those of the other ends, and the diameters of the placement plates 4 gradually decrease from top to bottom.

[0045] As Figure 2 、 5As shown, preferably, a vertical column 81 is provided inside the inner barrel 2. The column 81 is coaxial with the inner barrel 2. One end of the column 81 is fixedly connected to the inner bottom of the inner barrel 2 by threads, and the other end is vertically provided with a bent rod 82 directly below the sealing plate 5. One end of the bent rod 82 is fixedly connected to the column 81, and the other end is inclined upward. A plurality of arc-shaped grooves 83 are continuously formed on the side of the bent rod 82 close to the placement plate 4. The placement plate 4 is sleeved and fixed on the column 81. The hand of the operator fits with the arc-shaped grooves 83, which is convenient for taking out the column and a plurality of placement plates from the inner barrel through the bent rod 82, placing the pulverized coal to be pyrolyzed, and taking away the pulverized coal after pyrolysis.

[0046] The above-disclosed are only the preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A vertical pulverized coal pyrolysis furnace, comprising: Outer barrel (1), characterized in that it further comprises: Inner barrel (2), vertically arranged in the outer barrel (1), the inner barrel (2) being coaxial with the outer barrel (1), the bottom of the inner barrel (2) being fixedly connected to the outer barrel (1), the mouth of the inner barrel (2) extending out of the outer barrel (1), the inner side of the mouth of the outer barrel (1) being fixedly and sealingly connected to the inner barrel (2), an annular cavity being formed between the inner barrel (2) and the outer barrel (1); Heating pipe (3), arranged in a spiral shape in the annular cavity, the heating pipe (3) being fixedly connected to the inner barrel (2), one end of the heating pipe (3) passing through one side of the outer barrel (1) and communicating with the output port of an external heating device, and the other end passing through the other side of the outer barrel (1) and communicating with the input port of the external heating device; A plurality of placement trays (4), horizontally arranged at equal intervals inside the inner barrel (2), the placement trays (4) being connected to the inner barrel (2); Sealing plate (5), horizontally arranged at the mouth of the inner barrel (2), the sealing plate (5) being detachably and sealingly connected to the mouth of the inner barrel (2); The longitudinal sections of the inner barrel (2) and the outer barrel (1) are conical, the diameters of the inner barrel (2) and the outer barrel (1) at the end close to the sealing plate (5) being larger than those at the other end, and the diameters of the placement trays (4) decreasing successively from top to bottom; A fixing ring (71) is horizontally arranged directly above the sealing plate (5), the fixing ring (71) being coaxial with the sealing plate (5), and a plurality of fixing columns (72) are vertically arranged evenly around between the fixing ring (71) and the sealing plate (5), one end of the fixing column (72) being fixedly connected to the fixing ring (71) and the other end being fixedly connected to the sealing plate (5), the sealing plate (5) being threadedly and sealingly connected to the inner side of the mouth of the inner barrel (2); A vertical column (81) is arranged vertically inside the inner barrel (2), the vertical column (81) being coaxial with the inner barrel (2), one end of the vertical column (81) being threadedly and fixedly connected to the inner bottom of the inner barrel (2), and at the other end, a bent rod (82) is arranged vertically directly below the sealing plate (5), one end of the bent rod (82) being fixedly connected to the vertical column (81) and the other end being inclined upwards, and a plurality of arc-shaped grooves (83) are continuously formed on the side of the bent rod (82) close to the placement tray (4), and the placement tray (4) is sleeved and fixed on the vertical column (81).

2. The vertical pulverized coal pyrolysis furnace according to claim 1, characterized in that, An air inlet pipe (21) horizontally penetrates through the top of one side of the outer barrel (1), the air inlet pipe (21) being fixedly connected to the outer barrel (1), one end of the air inlet pipe (21) passing through the outer barrel (1) and communicating with one end of the heating pipe (3), and the other end being connected to the output port of an external heating device through a pipeline.

3. The vertical pulverized coal pyrolysis furnace according to claim 2, characterized in that, An air outlet pipe (31) horizontally penetrates through the bottom of the other side of the outer barrel (1), the air outlet pipe (31) being fixedly connected to the outer barrel (1), one end of the air outlet pipe (31) passing through the outer barrel (1) and communicating with the other end of the heating pipe (3), and the other end being connected to the input port of the external heating device through a pipeline.

4. The vertical pulverized coal pyrolysis furnace according to claim 3, characterized in that, On the bottom of one side of the outer barrel (1) far away from the air outlet pipe (31), an air discharge pipe (41) is horizontally arranged. The air discharge pipe (41) is fixedly connected to the outer barrel (1). One end of the air discharge pipe (41) passes through the outer barrel (1) and communicates with its interior. A sealing cover (42) is arranged at the other end. The sealing cover (42) is detachably and sealingly connected to the air discharge pipe (41).

5. The vertical pulverized coal pyrolysis furnace according to claim 1, characterized in that, An exhaust pipe (61) is vertically penetrated through the sealing plate (5). The exhaust pipe (61) is fixedly connected to the sealing plate (5). One end of the exhaust pipe (61) communicates with the interior of the inner barrel (2), and a one-way valve (62) is fixedly arranged at the other end.

6. The vertical pulverized coal pyrolysis furnace according to claim 1, characterized in that, A conical support base (91) is vertically arranged at the bottom of the outer barrel (1). The conical support base (91) is coaxial with the outer barrel (1). The diameter of the top of the conical support base (91) is smaller than that of the bottom. The top of the conical support base (91) is fixedly connected to the outer barrel (1). A rubber pad (92) is fixedly arranged at the bottom of the conical support base (91). Two rotating shafts (93) are horizontally arranged on both sides of the top of the outer barrel (1). One end of the rotating shaft (93) is fixedly connected to the outer barrel (1). A U-shaped handle (94) is arranged outside the other ends of the two rotating shafts (93). The two ends of the open end of the U-shaped handle (94) are respectively rotatably connected to the two rotating shafts (93).

7. The vertical pulverized coal pyrolysis furnace according to claim 1, wherein The material of the outer barrel (1) is polyvinyl chloride steel plate.

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