Coal low-temperature dry distillation device based on oxygen-enriched combustion

Abstract

The utility model discloses a coal low-temperature dry distillation device based on oxygen-enriched combustion, which comprises a low-temperature dry distillation component, a low-temperature dry distillation component and a low-temperature dry distillation component, the rotary layering assembly comprises a fixed block, a movable plate, a movable shaft, a baffle and a connecting rod; the fixed blocks are fixed above and below one side and in the middle of the other side in the carbonization furnace, the movable plates are positioned between the inner sides of each group of fixed blocks, the movable shafts are movably connected between the inner sides of each group of fixed blocks, the baffles are fixed at one ends of the movable plates, and the connecting rods are fixed at one ends of the movable shafts. Through the arrangement of the fixed blocks, the movable plates, the movable shafts, the baffle plates and the connecting rods, coal powder falls onto each layer of movable plate from the upper part, and when the movable plates are full, other coal powder falls into the carbonization furnace, so that when oxygen and air enter the carbonization furnace, the oxygen and the air are in full contact with the coal powder through the through holes in the movable plates; therefore, the coal powder is fully utilized, and the utilization rate of the coal powder is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical engineering, in particular to a low-temperature coal carbonization device based on oxy-fuel combustion. Background Art

[0002] Coal is a combustible black or dark brown fossil fuel, which is mainly a complex mixture composed of elements such as carbon, hydrogen, oxygen, nitrogen, and small amounts of sulfur and phosphorus. When coal powder is usually used, it needs to be heated and decomposed by a low-temperature carbonization device.

[0003] When the existing low-temperature carbonization device is in use, coal powder enters the carbonization furnace through a connecting pipe, causing the coal powder to accumulate in the carbonization furnace. Then, air and oxygen enter the carbonization furnace through an air pipe and an oxygen pipe, so that the coal powder is heated in the carbonization furnace. However, when the coal powder accumulates in the carbonization furnace, the connection between the coal powder is relatively tight, making it impossible for air and oxygen to fully contact the coal powder, resulting in a low utilization rate of the coal powder. Therefore, a carbonization device for auxiliary decomposition is needed to improve the utilization rate of coal powder. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a low-temperature coal carbonization device based on oxy-fuel combustion to solve the problem that when the existing low-temperature carbonization device is in use, coal powder enters the carbonization furnace through a connecting pipe, causing the coal powder to accumulate in the carbonization furnace. Then, air and oxygen enter the carbonization furnace through an air pipe and an oxygen pipe, so that the coal powder is heated in the carbonization furnace. However, when the coal powder accumulates in the carbonization furnace, the connection between the coal powder is relatively tight, making it impossible for air and oxygen to fully contact the coal powder, resulting in a low utilization rate of the coal powder as mentioned in the above background art.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is a low-temperature coal carbonization device based on oxy-fuel combustion, including:

[0007] A low-temperature carbonization component, a rotating layering component, and a limiting component;

[0008] The low-temperature carbonization component includes: a carbonization furnace, an air pipe, and an oxygen pipe; the air pipe is fixed and communicated with the carbonization furnace for introducing air into the carbonization furnace; the oxygen pipe is located on one side of the air pipe and is communicated with the air pipe for injecting oxygen-rich air into the air pipe and entering the carbonization furnace together with the air in the oxygen pipe;

[0009] The rotating layering components are arranged at intervals along the longitudinal direction on the inner wall of the carbonization furnace, and among two adjacent rotating layering components, the lower rotating layering component is used to receive the coal powder overflowing from the upper rotating layering component;

[0010] The rotating layering component includes: a fixed block, a movable plate, a movable shaft, a baffle and a connecting rod;

[0011] The movable shaft is a damping shaft; the limiting component is arranged on the inner wall of the carbonization furnace, and the limiting component is used to limit the maximum rotation angle of the movable plate;

[0012] The fixed block is fixedly arranged on the inner wall of the carbonization furnace, the movable shaft is rotatably arranged on the fixed block; the movable plate is fixedly connected with the movable shaft; rotating the movable shaft drives the movable plate to rotate relative to the fixed block; the baffle is fixedly arranged at the outer edge of the movable plate and is used to block the coal powder;

[0013] The connecting rod is fixedly connected with the movable shaft, and the end of the connecting rod penetrates through the side wall of the carbonization furnace and extends to the outside of the carbonization furnace.

[0014] Further, it further includes: a connecting block, the connecting block is fixed on the movable plate, and the movable plate is fixedly connected with the movable shaft through the connecting block.

[0015] Further, through holes are formed on the surface of the movable plate; an inclined plate is arranged at the outer edge of the movable plate, the inclined plate is located between the baffle and the movable plate, and the inclined plate is fixedly connected with the baffle.

[0016] Further, the limiting component includes: an annular rod, a fixed rod;

[0017] The annular rod is fixed on the inner wall of the carbonization furnace and is located below the movable plate to be used for limiting the maximum rotation angle of the movable plate; the fixed rod is fixed on the bottom surface of one end of the movable plate; the fixed rod and the annular rod are in corresponding positions, and when the movable plate rotates to the maximum rotation angle, the fixed rod abuts against the annular rod.

[0018] Further, a buffer rod is slidably connected inside the bottom end of the fixed rod, and the buffer rod is slidably matched with the fixed rod; the buffer rod is used to buffer the force between the annular rod and the fixed rod.

[0019] Further, the low-temperature carbonization component further includes: a purification device, a blower, a return furnace coal gas pipe, a connecting pipe, a raw coal gas pipe, a semi-coke pipe and an air supply pipe;

[0020] The purification device is located on one side of the carbonization furnace, and the blower is located on one side of the purification device. The blower is communicated with the purification device. The return gas pipe for the furnace is fixed on one side of the carbonization furnace and is conducted with the carbonization furnace; the connecting pipe is fixed on the top of the carbonization furnace and is conducted with the carbonization furnace for conveying coal powder into the carbonization furnace; one end of the raw gas pipe is communicated with the carbonization furnace, and the other end is communicated with the purification device. The semi-coke pipe is fixed on one side of the carbonization furnace and is conducted with the carbonization furnace. The gas supply pipe is fixed outside the blower for supplying gas to gas-using equipment.

[0021] Compared with the prior art, the advantages of the present utility model are as follows:

[0022] 1. In the present utility model, by providing a fixed block, a movable plate, a movable shaft, a baffle and a connecting rod, when the coal powder enters the carbonization furnace, the coal powder gradually falls from above onto the movable plate of each layer. When the movable plate is full, the other coal powder falls onto the inner bottom surface of the carbonization furnace, and then the conveying of the coal powder is stopped. When oxygen and air enter the carbonization furnace, due to the large gaps between the coal powder, the oxygen and air can fully contact the coal powder through the through holes on the movable plate, so that the coal powder is fully utilized and the utilization rate of the coal powder is improved.

[0023] 2. Based on the beneficial effect 1, at the same time, a group of fixed rods are fixedly connected to the bottom end of the movable plate, and the bottom end of the fixed rod is slidably connected with a buffer rod. And annular rods are fixedly connected to both sides inside the carbonization furnace. When the movable plate is not in use, it is moved downward through the movable shaft, so that the fixed rod, the buffer rod and the annular rod are engaged with each other, thereby limiting the rotated movable plate and preventing the movable plate from shaking in the carbonization furnace when it is idle. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the external structure of the present utility model;

[0026] Figure 2 It is a schematic diagram of the internal structure of the carbonization furnace of the present utility model;

[0027] Figure 3 It is a schematic diagram of the structure of the rotating and layering assembly of the present utility model;

[0028] Figure 4 It is a schematic diagram of the bottom structure of the movable plate of the present utility model.

[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0030] 11. Carbonization furnace; 12. Purification device; 13. Blower; 14. Air pipe; 141. Oxygen pipe; 15. Return furnace gas pipe; 16. Connecting pipe; 17. Raw gas pipe; 18. Semi-coke pipe; 19. Gas supply pipe; 21. Fixed block; 22. Movable plate; 23. Movable shaft; 24. Baffle; 25. Connecting block; 26. Connecting rod; 27. Through hole; 31. Ring rod; 32. Inclined plate; 33. Fixed rod; 34. Buffer rod. Detailed implementation manners

[0031] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manners of the present utility model in conjunction with the attached drawings.

[0032] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0033] To make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe the implementation manners of the present utility model in detail in conjunction with the attached drawings.

[0034] Please refer to Figures 1-3 As shown, this embodiment is a low-temperature coal carbonization device based on oxy-fuel combustion, including:

[0035] Low-temperature carbonization component, rotating stratification component, and limiting component;

[0036] The low-temperature carbonization component includes: carbonization furnace 11, air pipe 14, and oxygen pipe 141; the air pipe 14 is fixed and communicated with the carbonization furnace 11 for introducing air into the carbonization furnace 11; the oxygen pipe 141 is located on one side of the air pipe 14 and is communicated with the air pipe 14 for injecting oxygen-enriched air into the air pipe 14 and entering the carbonization furnace 11 together with the air in the oxygen pipe 141.

[0037] The rotating stratification components are arranged longitudinally and staggeredly at intervals on the inner wall of the carbonization furnace 11, and in two adjacent rotating stratification components, the lower rotating stratification component is used to receive the coal powder overflowing from the upper rotating stratification component.

[0038] The rotating stratification component includes: fixed block 21, movable plate 22, movable shaft 23, baffle 24, and connecting rod 26.

[0039] The movable shaft 23 is a damping shaft; the limiting component is arranged on the inner wall of the carbonization furnace 11 and is used to limit the maximum rotation angle of the movable plate 22.

[0040] In this embodiment, the maximum rotation angle of the movable plate 22 can be adjusted by adjusting the length of the above-mentioned limiting component. For example, the limiting component can be extended to reduce the maximum rotation angle of the movable plate 22.

[0041] The fixed block 21 is fixedly arranged on the inner wall of the carbonization furnace 11, and the movable shaft 23 is rotatably arranged on the fixed block 21; the movable plate 22 is fixedly connected to the movable shaft 23; rotating the movable shaft 23 drives the movable plate 22 to rotate relative to the fixed block 21; the baffle 24 is fixedly arranged at the outer edge of the movable plate 22 and is used to block the coal powder.

[0042] The connecting rod 26 is fixedly connected to the movable shaft 23, and the end of the connecting rod 26 penetrates through the side wall of the carbonization furnace 11 and extends to the outside of the carbonization furnace 11.

[0043] The fixed block 21 is used for connecting the movable plate 22, the movable plate 22 is used for placing the coal powder, the movable shaft 23 is used for driving the movable plate 22 to rotate, the baffle 24 is used to prevent the coal powder on the movable plate 22 from falling, and the connecting rod 26 is used to drive the movable shaft 23 to rotate.

[0044] In this embodiment, the above-mentioned movable shaft 23 is a damping shaft, which can be directly purchased or can be realized by adding a damper on the rotating shaft. Specifically in this application, the function to be achieved is that after the movable plate 22 is rotated to a predetermined angle, the movable plate will stay in place. By adjusting the friction of the damper, the load-bearing capacity of the movable plate 22 can be adjusted. In this application, it is necessary to ensure that in this embodiment, when the movable plate 22 is filled with coal powder, the movable plate can maintain its original position without being subjected to external forces; in this way, it can be ensured that the coal powder can stay on each movable plate 22.

[0045] In this embodiment, during the use process, refer to Figure 2As shown, after the angle adjustment of each movable plate 22 is completed in advance, of course, during the adjustment process, other auxiliary tools such as wrenches can be used for manual adjustment; after the adjustment is completed, the coal powder enters the carbonization furnace 11 from the connecting pipe 16. The coal powder that first enters the carbonization furnace 11 falls on the uppermost movable plate 22 and accumulates continuously. As more and more coal powder accumulates, the excess coal powder begins to accumulate on the middle movable plate 22. Similarly, as the coal powder continuously accumulates on the middle movable plate 22, until the middle movable plate 22 is filled, the excess coal powder slides onto the lowermost movable plate 22. Under the damping effect of the movable shaft 23, the coal powder can stay on the movable plate 22. In this way, the contact area between the coal powder and the oxygen-rich air can be increased, and thus the coal powder can be utilized more fully.

[0046] It further includes: a connecting block 25, the connecting block 25 is fixed on the movable plate 22, and the movable plate 22 is fixedly connected to the movable shaft 23 through the connecting block 25.

[0047] Manually rotate the connecting rod 26, so that the connecting rod 26 rotates on the outside, and at the same time drives the movable shaft 23 to rotate, so that the movable shaft 23 drives the movable plate 22 to rotate, and the movable shaft 23 can only rotate sixty degrees. The movable plate 22 is connected to the movable shaft 23 through the connecting block 25, and the movable shaft 23 is a damping shaft;

[0048] Through holes 27 are formed on the surface of the movable plate 22.

[0049] The movable shaft 23 drives the movable plate 22 to rotate through the connecting block 25, and the through holes 27 are formed, so that the air and oxygen-rich air entering the carbonization furnace 11 can fully contact the coal powder on the movable plate 22 through the through holes 27, so that the coal powder can be fully utilized.

[0050] Working principle:

[0051] Before the component is used, the movable plate 22 is flush with the carbonization furnace 11. When the component is in use, the user can use tools such as a wrench to rotate the connecting rod 26, so that the connecting rod 26 drives the movable shaft 23 to rotate together, prompting the movable shaft 23 to drive the movable plate 22 to rotate through the connecting block 25. Since the movable shaft 23 is set to only rotate a certain angle, when the movable shaft 23 rotates to a certain angle, it stops rotating. Since the movable shaft 23 is a damping shaft, after the movable shaft 23 rotates, the movable plate 22 stays at the specified position temporarily. In this embodiment, the damping of the damping shaft can be adjusted.

[0052] Subsequently, the coal powder enters the carbonization furnace 11 through the connecting pipe 16. The coal powder gradually falls from above onto the upper movable plate 22. When the upper movable plate 22 is continuously piled up with coal powder, the excess coal powder gradually falls onto the movable plates 22 of each lower layer along the inclined direction of the movable plate 22. At the same time, the coal powder input from the connecting pipe 16 also directly falls onto the movable plate 22. Similarly, when all the movable plates 22 are filled, the other coal powder falls onto the inner bottom surface of the carbonization furnace 11, and then the conveying of the coal powder is stopped.

[0053] Air and oxygen-enriched air enter the carbonization furnace 11 through the air pipe 14 and the oxygen pipe 141, so that oxygen and air can fully contact the coal powder through the through holes 27, thereby making full use of the coal powder.

[0054] After the coal powder is heated, the user rotates the connecting rod 26 on the outside of the carbonization furnace 11 through tools such as a wrench, so that the connecting rod 26 drives the movable plate 22 to rotate downward through the movable shaft 23, and the coal powder on the movable plate 22 falls to the bottom end of the carbonization furnace 11, which is convenient for the heated coal powder to be conveyed outwards.

[0055] Specifically, a conveying port can be opened at the bottom of the carbonization furnace 11. When it is necessary to convey the coal powder in the carbonization furnace 11 to the outside of the carbonization furnace 11, the aforementioned conveying port can be opened. The specific conveying process can be using a conveyor belt or other conveying methods, which is not limited in this application. When the carbonization furnace 11 is working, the above-mentioned conveying port is in a normally closed state.

[0056] In the above steps, through the interaction between the movable shaft 23 and the connecting rod 26, the movable plate 22 can be driven to rotate.

[0057] Please refer to Figure 1 、 Figure 4 As shown, on the basis of the above-mentioned Embodiment 1, this embodiment further includes:

[0058] It further includes a limiting component.

[0059] The limiting component includes: an annular rod 31 and a fixed rod 33. The annular rod 31 is fixed on the inner wall of the carbonization furnace 11 and is located below the movable plate 22 to limit the maximum rotation angle of the movable plate 22. The fixed rod 33 is fixed on the bottom surface of one end of the movable plate 22. The fixed rod 33 corresponds to the position of the annular rod 31. When the movable plate 22 rotates to the maximum rotation angle, the fixed rod 33 abuts against the annular rod 31.

[0060] The annular rod 31 is used for the connection of the fixed rod 33, and the fixed rod 33 is used for the connection and sliding of the buffer rod 34.

[0061] An inclined plate 32 is provided at the outer edge of the movable plate 22. The inclined plate 32 is located between the baffle 24 and the movable plate 22, and the inclined plate 32 is fixedly connected to the baffle 24.

[0062] The inclined plate 32 is used for the movement of the coal powder after heating. When the movable plate 22 moves to its original position, the heated coal powder can move downward through the inclined plate 32.

[0063] A buffer rod 34 is slidably connected inside the bottom end of the fixed rod 33, and the buffer rod 34 is slidably engaged with the fixed rod 33; the buffer rod 34 is used to buffer the force between the annular rod 31 and the fixed rod 33.

[0064] The buffer rod 34 is used for the rotation of the movable plate 22. The fixed rod 33, the buffer rod 34 and the annular rod 31 are engaged with each other to limit the movable plate 22 in the vertical state.

[0065] The low-temperature carbonization assembly further includes: a purification device 12, a blower 13, a return furnace gas pipe 15, a connecting pipe 16, a raw gas pipe 17, a semi-coke pipe 18 and a gas supply pipe 19.

[0066] The purification device 12 is located on one side of the carbonization furnace 11, the blower 13 is located on one side of the purification device 12, the blower 13 is communicated with the purification device 12, the return furnace gas pipe 15 is fixed on one side of the carbonization furnace 11 and is conducted with the carbonization furnace 11; the connecting pipe 16 is fixed on the top end of the carbonization furnace 11 and is conducted with the carbonization furnace 11 for conveying coal powder into the carbonization furnace 11; one end of the raw gas pipe 17 is communicated with the carbonization furnace 11, and the other end is communicated with the purification device 12. The semi-coke pipe 18 is fixed on one side of the carbonization furnace 11 and is conducted with the carbonization furnace 11. The gas supply pipe 19 is fixed outside the blower 13 for supplying gas to the gas using equipment.

[0067] The purification device 12 purifies the gas after heating the coal powder. The blower 13 is used for conveying the purified gas. The return furnace gas pipe 15 is used for conveying the gas into the carbonization furnace 11. And a return furnace gas pipe 15 is also provided on the gas supply pipe 19. The connecting pipe 16 is used for the coal powder to enter the carbonization furnace 11. The raw gas pipe 17 is used for conveying the gas after heating the coal powder into the purification device 12. The semi-coke pipe 18 is used for conveying the semi-coke after heating. The gas supply pipe 19 is used for conveying the purified gas to other places as power.

[0068] At the same time, oxygen enrichment is used to replace air for combustion, reducing the nitrogen content in the gas, greatly increasing the content of effective components such as methane, hydrogen and carbon monoxide in the gas, and realizing the high-value utilization of low-temperature carbonization gas.

[0069] Working principle:

[0070] When the movable plate 22 is not in use, rotate the connecting rod 26 by hand, so that the movable plate 22 moves downward through the movable shaft 23, so that the heated coal powder on the movable plate 22 drops downward through the inclined plate 32. At the same time, the fixed rod 33, the buffer rod 34 and the annular rod 31 are engaged with each other, so as to limit the rotated movable plate 22 and prevent the movable plate 22 from shaking in the carbonization furnace 11 when it is idle.

[0071] When the movable plate 22 moves upward, the buffer rod 34 moves into the fixed rod 33 under the influence of the rotation of the movable plate 22, so as to facilitate the smooth upward rotation of the movable plate 22.

[0072] The above steps can improve its own functionality.

[0073] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0074] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-temperature coal carbonization device based on oxygen-enriched combustion, characterized in that, Comprising: A low-temperature carbonization component, a rotating layering component, and a limiting component; The low-temperature carbonization component includes: a carbonization furnace (11), an air pipe (14), and an oxygen pipe (141); the air pipe (14) is fixed and communicated with the carbonization furnace (11) for introducing air into the carbonization furnace (11); the oxygen pipe (141) is located on one side of the air pipe (14) and is communicated with the air pipe (14) for injecting oxygen-enriched air into the air pipe (14) and entering the carbonization furnace (11) together with the air in the oxygen pipe (141); The rotating layering components are arranged at intervals along the longitudinal direction on the inner wall of the carbonization furnace (11), and among two adjacent rotating layering components, the lower rotating layering component is used for receiving the coal powder overflowing from the upper rotating layering component; The rotating layering component includes: a fixed block (21), a movable plate (22), a movable shaft (23), a baffle (24), and a connecting rod (26); The movable shaft (23) is a damping shaft; the limiting component is arranged on the inner wall of the carbonization furnace (11), and the limiting component is used for limiting the maximum rotation angle of the movable plate (22); The fixed block (21) is fixedly arranged on the inner wall of the carbonization furnace (11), the movable shaft (23) is rotatably arranged on the fixed block (21); the movable plate (22) is fixedly connected with the movable shaft (23); rotating the movable shaft (23) drives the movable plate (22) to rotate relative to the fixed block (21); the baffle (24) is fixedly arranged at the outer edge of the movable plate (22) for blocking coal powder; The connecting rod (26) is fixedly connected with the movable shaft (23), and the end of the connecting rod (26) penetrates through the side wall of the carbonization furnace (11) and extends to the outside of the carbonization furnace (11).

2. The low-temperature coal carbonization device based on oxygen-enriched combustion according to claim 1, characterized in that, Further comprising: A connecting block (25), the connecting block (25) is fixed on the movable plate (22), and the movable plate (22) is fixedly connected with the movable shaft (23) through the connecting block (25).

3. The low-temperature coal carbonization device based on oxy-fuel combustion according to claim 2, wherein Through holes (27) are formed on the surface of the movable plate (22); an inclined plate (32) is arranged at the outer edge of the movable plate (22), the inclined plate (32) is located between the baffle (24) and the movable plate (22), and the inclined plate (32) is fixedly connected with the baffle (24).

4. A low-temperature coal carbonization device based on oxygen-enriched combustion according to claim 1, characterized in that, The limiting component includes: an annular rod (31) and a fixed rod (33); The annular rod (31) is fixed on the inner wall of the carbonization furnace (11) and is located below the movable plate (22) for limiting the maximum rotation angle of the movable plate (22); the fixed rod (33) is fixed on the bottom surface of one end of the movable plate (22); the fixed rod (33) corresponds to the position of the annular rod (31), and when the movable plate (22) rotates to the maximum rotation angle, the fixed rod (33) abuts against the annular rod (31).

5. The low-temperature coal carbonization device based on oxygen-enriched combustion according to claim 4, characterized in that, A buffer rod (34) is slidably connected to the inside of the bottom end of the fixed rod (33), and the buffer rod (34) is slidably engaged with the fixed rod (33); the buffer rod (34) is used to buffer the force between the annular rod (31) and the fixed rod (33).

6. The low-temperature coal carbonization device based on oxy-fuel combustion according to claim 1, characterized in that, The low-temperature carbonization assembly further includes: a purification device (12), a blower (13), a return furnace coal gas pipe (15), a connecting pipe (16), a raw coal gas pipe (17), a semi-coke pipe (18), and a gas supply pipe (19); The purification device (12) is located on one side of the carbonization furnace (11), and the blower (13) is located on one side of the purification device (12). The blower (13) is communicated with the purification device (12). The return furnace coal gas pipe (15) is fixed to one side of the carbonization furnace (11) and is communicated with the carbonization furnace (11); the connecting pipe (16) is fixed to the top end of the carbonization furnace (11) and is communicated with the carbonization furnace (11) for conveying coal powder into the carbonization furnace (11); one end of the raw coal gas pipe (17) is communicated with the carbonization furnace (11), and the other end is communicated with the purification device (12). The semi-coke pipe (18) is fixed to one side of the carbonization furnace (11) and is communicated with the carbonization furnace (11). The gas supply pipe (19) is fixed to the outside of the blower (13) for supplying gas to gas-using equipment.

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