An adjustable gas-solid fluidized bed reactor system

Abstract

The utility model relates to an adjustable gas -solid fluidized bed reaction system belongs to fluidized bed reaction system technical field, including the fixed frame, is fixedly arranged with the reaction bin on the fixed frame, is provided with the reaction bin filter mechanism in the reaction bin top, is provided with the fluidization air intake mechanism in the reaction bin bottom, fluidization air intake mechanism both sides are provided with the feed bin and the material collecting bin, are provided with the feed main pipeline in the feed bin lower extreme, are provided with first feed branch pipe line and second feed branch pipe line in the feed main pipeline lower extreme, and first feed branch pipe line is connected with the side wall of fluidization air intake mechanism, and second feed branch pipe line is connected with the bottom of fluidization air intake mechanism, the material collecting bin is connected with the side wall of fluidization air intake mechanism through first discharge pipeline, and is connected with the bottom of fluidization air intake mechanism through second discharge pipeline, is still provided with rotary stirring mechanism in the bottom of fluidization air intake mechanism, solved the current fluidized bed and reached the effect of uniform fluidization, easy to take place the problem of reunion and channeling, can not adjust.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluidized bed reaction systems, specifically relating to an adjustable gas-solid fluidized bed reaction system. Background Technology

[0002] Fluidization refers to the state in which particles, under the influence of flowing gas or liquid, exhibit a fluid-like behavior. Fluidized beds, due to the small size and large specific surface area of ​​the solid particles used, offer advantages such as uniform contact between gas and solid particles, high heat and mass transfer rates, and uniform temperature field, and are widely used in energy, chemical and other fields.

[0003] However, fluidized beds currently have the following drawbacks: (1) Single-point air intake cannot adjust the gas distribution and it is difficult to achieve uniform fluidization.

[0004] (2) When fluidizing lightweight particles such as porous carbon, agglomeration and channeling are likely to occur.

[0005] (3) The feeding and discharging routes are simple and cannot be adjusted, which is not conducive to equipment optimization. Utility Model Content

[0006] This invention overcomes the shortcomings of existing technologies and proposes an adjustable gas-solid fluidized bed reaction system; it solves the problems of current fluidized beds, such as difficulty in achieving uniform fluidization, easy agglomeration and channeling, and inability to be adjusted.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0008] An adjustable gas-solid fluidized bed reaction system includes a fixed frame, a reaction chamber fixedly mounted on the fixed frame, a reaction chamber filter mechanism at the top of the reaction chamber, and a fluidized air inlet mechanism at the bottom of the reaction chamber. A feed hopper and a receiving hopper are respectively located on both sides of the fluidized air inlet mechanism. A main feed pipeline is located at the lower end of the feed hopper, and a first feed branch pipeline and a second feed branch pipeline are located at the lower end of the main feed pipeline. The first feed branch pipeline is connected to the side wall of the fluidized air inlet mechanism, and the second feed branch pipeline is connected to the bottom of the fluidized air inlet mechanism. The receiving hopper is connected to the side wall of the fluidized air inlet mechanism via a first discharge pipeline, and the receiving hopper is connected to the bottom of the fluidized air inlet mechanism via a second discharge pipeline. A rotary stirring mechanism is also located at the bottom of the fluidized air inlet mechanism.

[0009] Furthermore, a feed pipe is installed at the upper inlet of the feed hopper, and a pneumatic ball valve for the feed inlet is installed on the feed pipe. A feed inlet is installed at the upper end of the feed pipe, and a feed filter assembly is installed at the upper end of the feed inlet. A pneumatic ball valve for the feed filter assembly is installed at the upper inlet of the feed filter assembly. An air inlet for the feed hopper is installed on the top plate of the feed hopper. The lower outlet of the feed hopper is connected to the upper inlet of the main feed pipeline, and a ball valve for the main feed pipeline is installed on the main feed pipeline.

[0010] Furthermore, the upper inlet of the first feed branch pipe and the upper inlet of the second feed branch pipe are both connected to the lower outlet of the main feed pipe; a first feed branch pipe ball valve and a first feed branch pipe air inlet are provided on the first feed branch pipe, with the first feed branch pipe air inlet located on the front side of the first feed branch pipe ball valve near the main feed pipe; a second feed branch pipe ball valve and two second feed branch pipe air inlets are provided on the second feed branch pipe, with the first and second feed branch pipe air inlets located on the front and rear sides of the second feed branch pipe ball valve, respectively.

[0011] Furthermore, the fluidized air intake mechanism includes an air intake chamber, which is a cylindrical structure with an open top. The upper opening of the air intake chamber is fixedly connected to the lower opening of the reaction chamber. A bottom air intake pipe is fixedly installed on the bottom plate of the air intake chamber, and the lower opening of the bottom air intake pipe is the bottom air inlet. The opening of the first feed branch pipe away from the main feed pipe is connected to the side wall of the air intake chamber, and the opening of the second feed branch pipe away from the main feed pipe is connected to the bottom plate of the air intake chamber. The first discharge pipe is connected to the side wall of the air intake chamber, and the second discharge pipe is connected to the bottom plate of the air intake chamber.

[0012] Furthermore, two stacked air distribution plates are installed on the bottom surface of the air intake chamber.

[0013] Furthermore, a first discharge pipe ball valve is installed on the first discharge pipe, and a second discharge pipe ball valve is installed on the second discharge pipe; a top air inlet for the receiving hopper is installed on the top plate of the receiving hopper; a receiving filter assembly is installed at the top outlet of the receiving hopper, a top pneumatic ball valve for the receiving hopper is installed at the upper end of the receiving filter assembly, and a receiving filter backflush air inlet is installed between the top pneumatic ball valve for the receiving hopper and the receiving filter assembly.

[0014] Furthermore, the reaction chamber filtration mechanism includes a filter chamber, which is a cylindrical structure with an open bottom. The lower opening of the filter chamber is fixedly connected to the upper opening of the reaction chamber. A fixing plate is fixedly installed in the middle of the inner side of the filter chamber, and multiple mounting holes are provided on the fixing plate. A top air inlet and a top air outlet are provided on the top plate of the filter chamber, and a pneumatic ball valve for the top of the reaction chamber is provided at the upper end of the top air outlet.

[0015] Furthermore, a primary filtration assembly and a secondary filtration assembly are installed inside the filter chamber. The primary filtration assembly is located below the fixed plate, and the secondary filtration assembly is also located below the fixed plate. The primary filtration assembly includes a filter rod, an activated carbon filter bag, and carbon ropes. A filter rod is fixedly installed at the lower end of each mounting hole. The filter rod is a cylindrical structure with an open top, and filter holes are provided on the side wall and bottom of the filter rod. An activated carbon filter bag is sleeved on the outside of the filter rod, and the activated carbon filter bag is fixed to the filter rod by binding it with carbon ropes. The secondary filtration assembly... The system includes a filter screen frame and a filter bag. The filter screen frame is a cylindrical structure with openings at both the top and bottom. The lower end of the filter screen frame abuts against the upper surface of a fixing plate, and the upper end of the filter screen frame extends into the top air outlet pipe. Filter holes are provided on the side walls of the filter screen frame. A filter bag is fitted onto the outside of the filter screen frame. A circular filter flange is fixedly installed at the upper opening of the top air outlet pipe. The filter flange is pressed against the upper end of the filter screen frame to fix it in place. A flange air inlet is provided on the filter flange, through which compressed air can be injected into the filter screen frame.

[0016] Furthermore, the rotary stirring mechanism includes a scraper, a rotating shaft, a turntable, and a sealing tube; the sealing tube is fixedly installed at the center of the bottom plate of the reaction chamber, the rotating shaft is rotatably inserted into the inside of the sealing tube, the upper end of the rotating shaft passes upward through two gas distribution plates and is fixedly installed with a scraper, a conical plug is fixedly installed at the upper end of the connection between the rotating shaft and the scraper; and a turntable is fixedly installed at the lower end of the rotating shaft.

[0017] Furthermore, a sealed air inlet is provided on the sealed tube, which is connected to the air passage inside the sealed tube. A sealed air outlet is provided at the upper end of the sealed tube, which faces the outer side of the rotating shaft inside the reaction chamber.

[0018] The beneficial effects of this utility model compared to the prior art are as follows: (1) By setting up multiple air intakes in the air intake chamber and combining them with a stacked, adjustable gas distribution plate, the gas can be evenly distributed into the reaction chamber after passing through the gas distribution plate, thus ensuring fluidization uniformity.

[0019] (2) The air inlet chamber is equipped with a rotary stirring mechanism. On the one hand, when the gas-solid mixture forms a fluidized state, it is stirred to prevent the powder from agglomerating and channeling. On the other hand, when the bottom discharge method is adopted, it is rotated to facilitate discharge, reduce the air intake, and save the amount of carrier gas.

[0020] (3) The air intake flow rate can be adjusted and controlled through the air circuit system; at the same time, by controlling the opening and closing of the pipeline and valve, and in conjunction with the filter device, the conversion between the feed bin and the discharge bin can be realized, with a total of 4 combinations of feed route and discharge route. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a schematic diagram showing the connection between the fluidized air intake mechanism, the rotary stirring mechanism, the first feed branch pipe, the second feed branch pipe, the first discharge pipe, and the second discharge pipe; Figure 4 This is a schematic diagram of the reaction chamber filtration mechanism; Figure 5 This is a three-dimensional schematic diagram of a rotary stirring mechanism; Figure 6 This is a cross-sectional view of the rotary stirring mechanism; Among them, 1 is the feed filter pneumatic ball valve, 2 is the feed filter assembly, 3 is the feed inlet, 4 is the feed inlet pneumatic ball valve, 5 is the feed bin air inlet, 6 is the feed bin, 7 is the feed main pipeline ball valve, 8 is the first feed branch pipeline, 9 is the first feed branch pipeline air inlet, 10 is the first feed branch pipeline ball valve, 11 is the second feed branch pipeline, 12 is the second feed branch pipeline air inlet one, 13 is the second feed branch pipeline ball valve, 14 is the fixed frame, 15 is the second feed branch pipeline air inlet two, 16 is the bottom air inlet, 17 is the rotary stirring mechanism, 18 is the fluidizing air inlet mechanism, 19 is the second discharge pipeline air inlet, 20 is the second discharge pipeline, 21 is the first discharge pipeline air inlet, and 22 is the second discharge pipeline air inlet. 1. Discharge pipeline; 23. Receiving bin; 24. Air inlet at the top of the receiving bin; 25. Receiving filter assembly; 26. Air inlet for backflushing the receiving filter; 27. Pneumatic ball valve at the top of the receiving bin; 28. Reaction chamber; 29. ​​Filtering mechanism of the reaction chamber; 30. Air inlet at the top of the reaction chamber; 31. Pneumatic ball valve at the top of the reaction chamber; 34. Air distribution plate; 35. Plug; 36. Scraper; 37. Rotating shaft; 38. Sealing ring; 39. Sealing pipe; 40. Sealing plug; 41. Turntable; 42. Elastic retaining ring for shaft; 43. Sealing air inlet; 45. Filter rod; 46. Fixing plate; 47. Filter screen frame; 48. Filter flange; 49. Flange air inlet; 50. Filter bag; 51. Activated carbon filter bag. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0023] like Figure 1 As shown in Figure 6, this utility model provides an adjustable gas-solid fluidized bed reaction system, including a fixed frame 14, a reaction chamber 28 fixedly mounted on the fixed frame 14, a reaction chamber filter mechanism 29 mounted on the top of the reaction chamber 28, and a fluidized air inlet mechanism 18 mounted on the bottom of the reaction chamber 28; a feed hopper 6 and a receiving hopper 23 are respectively mounted on both sides of the fluidized air inlet mechanism 18; a main feed pipeline is mounted at the lower end of the feed hopper 6, and a first feed branch pipeline 8 and a second feed branch pipeline 11 are mounted at the lower end of the main feed pipeline, wherein the first feed branch pipeline 8 is connected to the side wall of the fluidized air inlet mechanism 18, and the second feed branch pipeline 11 is connected to the bottom of the fluidized air inlet mechanism 18; the receiving hopper 23 is connected to the side wall of the fluidized air inlet mechanism 18 through a first discharge pipeline 22, and the receiving hopper 23 is connected to the bottom of the fluidized air inlet mechanism 18 through a second discharge pipeline 20; a rotary stirring mechanism 17 is also mounted at the bottom of the fluidized air inlet mechanism 18.

[0024] A vertical feed pipe is installed at the upper inlet of the feed hopper 6. A pneumatic ball valve 4 is installed on the feed pipe. An inlet 3 is located at the upper end of the feed pipe, and a feed filter assembly 2 is installed above the inlet 3. A filter element is installed inside the feed filter assembly 2, and a pneumatic ball valve 1 is installed at the upper inlet of the feed filter assembly 2. An air inlet 5 is installed on the top plate of the feed hopper 6. The lower outlet of the feed hopper 6 is connected to the upper inlet of the main feed pipeline, and a main feed pipeline ball valve 7 is installed on the main feed pipeline.

[0025] The upper inlet of the first feed branch pipe 8 and the upper inlet of the second feed branch pipe 11 are both connected to the lower outlet of the main feed pipe. A first feed branch pipe ball valve 10 and a first feed branch pipe air inlet 9 are installed on the first feed branch pipe 8, with the first feed branch pipe air inlet 9 located on the front side of the first feed branch pipe ball valve 10 near the main feed pipe. A second feed branch pipe ball valve 13 and two second feed branch pipe air inlets 12 and 15 are installed on the second feed branch pipe 11, located on the front and rear sides of the second feed branch pipe ball valve 13, respectively.

[0026] The fluidized air intake mechanism 18 includes an air intake chamber, which is a cylindrical structure with an open top. The upper opening of the air intake chamber is fixedly connected to the lower opening of the reaction chamber 28 by bolts. A bottom air intake pipe is fixedly installed on the bottom plate of the air intake chamber, and the lower opening of the bottom air intake pipe is the bottom air inlet 16. The opening of the first feed branch pipe 8 away from the main feed pipe is connected to the side wall of the air intake chamber, and the opening of the second feed branch pipe away from the main feed pipe is connected to the bottom plate of the air intake chamber. The first discharge pipe 22 is connected to the side wall of the air intake chamber, and the second discharge pipe 20 is connected to the bottom plate of the air intake chamber.

[0027] Two stacked gas distribution plates 34 are installed on the bottom surface of the air intake chamber. The openings on the two gas distribution plates 34 are identical. By controlling the relative angle of the two gas distribution plates 34, the uniform distribution of gas passing through the gas distribution plates 34 can be controlled. The connection points of the first feed branch pipe 8 and the first discharge pipe 22 to the air intake chamber are both located above the gas distribution plates 34, while the connection points of the second feed branch pipe 11 and the second discharge pipe 22 to the air intake chamber are both located below the gas distribution plates 34.

[0028] After gas is introduced into the bottom air inlet 16 and the bottom air inlet pipe, a temporary "gas chamber" is formed between the gas distribution plate 34 and the bottom surface of the air inlet chamber. After passing through the two gas distribution plates 34, the gas is evenly distributed and blown into the interior of the reaction chamber 28.

[0029] A first discharge pipe ball valve is installed on the first discharge pipe 22, and a second discharge pipe ball valve is installed on the second discharge pipe 20. A top air inlet 24 is installed on the top plate of the receiving hopper 23. A receiving filter assembly 25 is installed at the top outlet of the receiving hopper 23, and a top pneumatic ball valve 27 is installed on the upper end of the receiving filter assembly 25. A receiving filter backflush air inlet 26 is installed between the top pneumatic ball valve 27 and the receiving filter assembly 25.

[0030] The reaction chamber filtration mechanism 29 includes a filter chamber, which is a cylindrical structure with an open bottom. The lower opening of the filter chamber is fixedly connected to the upper opening of the reaction chamber 28 by bolts. A horizontal fixing plate 46 is fixedly installed at the middle height of the inner side of the filter chamber, and multiple mounting holes are provided on the fixing plate 46. A top air inlet 30 and a top air outlet pipe are provided on the top plate of the filter chamber, and a pneumatic ball valve 31 for the top of the reaction chamber is provided at the upper end of the top air outlet pipe.

[0031] The filter chamber contains a primary filtration assembly and a secondary filtration assembly. The primary filtration assembly is located below the fixing plate 46, and both the primary and secondary filtration assemblies are located below the fixing plate 46. The primary filtration assembly includes filter rods 45, activated carbon filter bags 51, and carbon ropes. A filter rod 45 is fixedly installed at the lower end of each mounting hole. The filter rod 45 is a cylindrical structure with an open top. Filter holes are provided on the side walls and bottom of the filter rod 45. An activated carbon filter bag 51 is fitted onto the outside of the filter rod 45, and the activated carbon filter bag 51 is secured to the filter rod 45 by binding it with carbon ropes. The secondary filtration assembly includes a filter screen frame 47 and filter bags 50. The filter screen frame 47 is a cylindrical structure with open top and bottom. The lower end of the filter screen frame 47 abuts against the upper surface of the fixing plate 46, and the upper end of the filter screen frame 47 extends into the top air outlet pipe. Filter holes are provided on the side walls of the filter screen frame 47. Filter bags 50 are fitted onto the outside of the filter screen frame 47. A circular filter flange 48 is fixedly installed at the upper opening of the top air outlet pipe. The filter flange 48 is pressed against the upper end of the filter screen frame 47, thereby fixing the filter screen frame 47. A flange air inlet 49 is provided on the filter flange 48, through which compressed air can be injected into the filter screen frame 47.

[0032] The rotary stirring mechanism 17 includes a scraper 36, a rotating shaft 37, a turntable 41, and a sealing tube 39.

[0033] The sealing tube 39 is fixedly installed at the center of the bottom plate of the reaction chamber 28. The rotating shaft 37 is rotatably inserted into the sealing tube 39. The upper end of the rotating shaft 37 passes upward through two gas distribution plates 34 and is fixedly equipped with a scraper 36. A conical plug 35 is fixedly installed at the upper end of the connection between the rotating shaft 37 and the scraper 36. A turntable 41 is fixedly installed at the lower end of the rotating shaft 37. The turntable 41 drives the rotating shaft 37 to rotate, and the rotating shaft 37 drives the scraper 36 to rotate on the upper surface of the gas distribution plate 34. A sealing ring 38 is pressed between the sealing tube 39 and the bottom plate of the reaction chamber 28. A sealing plug 40 is installed between the lower opening of the sealing tube 39 and the rotating shaft 37. The sealing tube 39 and the sealing plug 40 are connected to the rotating shaft 37 by elastic retaining rings 42 on the upper and lower shafts. A sealing air inlet 43 is also provided on the sealing tube 39. The sealing air inlet 43 is connected to the air passage inside the sealing tube 39. A sealing air outlet is provided at the upper end of the sealing tube 39. The sealing air outlet faces the outer side of the rotating shaft 37 inside the reaction chamber 28.

[0034] By controlling the scraper 36 to rotate at the upper end of the air distribution plate 34, on the one hand, it can agitate the powder during the process of blowing it into the fluidization state, preventing the powder from agglomerating and affecting the fluidization effect; on the other hand, when using the bottom discharge method, it can scrape the powder to the discharge port, which is conducive to discharge and at the same time reduces the amount of carrier gas used.

[0035] The first feeding method of this utility model is side feeding: the powder is loaded into the feed hopper 6 through the feed port 3, the ball valve 7 of the feed main pipeline is opened and the feed filter pneumatic ball valve 1 is closed, gas is introduced into the feed hopper 6 through the feed hopper air inlet 5, the ball valve 13 of the second feed branch pipeline on the second feed branch pipeline 11 is closed, the ball valve 10 of the first feed branch pipeline on the first feed branch pipeline 8 is opened, and gas is introduced through the first feed branch pipeline air inlet 9 on the first feed branch pipeline 8, so that the powder enters the air inlet chamber and the reaction chamber 28 from the side of the fluidized air inlet mechanism 18. At this time, the feeding position of the reaction chamber 28 is above the gas distribution plate 34.

[0036] The second feeding method of this utility model is bottom feeding: the feed material is loaded into the feed hopper 6 through the feed inlet 3, the feed main pipeline ball valve 7 is opened and the feed filter pneumatic ball valve 1 is closed, gas is introduced into the feed hopper 6 through the feed hopper air inlet 5, the first feed branch pipeline ball valve 10 on the first feed branch pipeline 8 is closed, the second feed branch pipeline ball valve 13 on the second feed branch pipeline 11 is opened, and gas is introduced through the second feed branch pipeline air inlet 12 and the second feed branch pipeline air inlet 15 on the second feed branch pipeline 11, so that the powder is blown into the air inlet hopper and the reaction chamber 28 from the bottom.

[0037] After the powder is conveyed into the reaction chamber 28 under positive pressure, the ball valves 10 and 13 of the first and second feed branch pipes are closed, as are the ball valves of the first and second discharge pipes. The pneumatic ball valve 31 at the top of the reaction chamber is then opened. Gas is introduced into the air chamber and reaction chamber 28 through the bottom air inlet 16 and bottom air inlet pipe. The gas is evenly distributed by two stacked, adjustable gas distribution plates 34, which then blow the powder into a fluidized state. To prevent the powder from falling into the second feed and second discharge pipes 20, gas is introduced into the second feed branch pipe air inlet 15 and the second discharge pipe air inlet 19. During this process, the rotary stirring mechanism 17 is activated to prevent powder agglomeration or channeling during fluidization.

[0038] After the powder is fluidized inside the reaction chamber 28, the airflow will be discharged through the reaction chamber filtration mechanism 29. At this time, the dust in the airflow will remain inside the reaction chamber 28 after being filtered by the primary and secondary filtration components and will not be discharged into the air.

[0039] The first discharge method of this utility model is side discharge: close the pneumatic ball valve 31 at the top of the reaction chamber, close the ball valve of the second discharge pipeline, the ball valve of the first feed branch pipeline 10, and the ball valve of the second feed branch pipeline 13, continuously introduce gas through the air inlet 30 at the top of the reaction chamber, open the ball valve of the first discharge pipeline, and open the pneumatic ball valve 27 at the top of the receiving hopper. At this time, the powder can be transported from the reaction chamber 28 to the inside of the feeding hopper 6.

[0040] The second discharge method of this utility model is bottom discharge: close the pneumatic ball valve 31 at the top of the reaction chamber, close the ball valve of the first discharge pipeline, the ball valve 10 of the first feed branch pipeline, and the ball valve 13 of the second feed branch pipeline, continuously introduce gas through the air inlet 30 at the top of the reaction chamber, open the ball valve of the second discharge pipeline, and open the pneumatic ball valve 27 at the top of the receiving hopper. At this time, the powder can be transported from the reaction chamber 28 to the inside of the feeding hopper 6.

[0041] Two feeding methods and two discharging methods can be combined for a total of four modes. By controlling the opening and closing of the pneumatic ball valves at the top of the feeding hopper 6, reaction hopper 28, and receiving hopper 23, as well as the gas flow through the air inlets at the top of each hopper, the feeding hopper 6 can be converted into the receiving hopper 23, and vice versa. At the same time, the side of the reaction hopper 28 is equipped with flange pipe interfaces of different heights, which can adjust the height of the feeding pipeline and test the effect of different feeding heights on fluidization. This utility model provides multiple feeding and discharging routes, offering multiple options for optimizing the feeding and discharging routes.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustable gas-solid fluidized bed reaction system, characterized in that: The system includes a fixed frame (14), on which a reaction chamber (28) is fixedly mounted. A reaction chamber filter mechanism (29) is mounted on the top of the reaction chamber (28), and a fluidizing air inlet mechanism (18) is mounted on the bottom of the reaction chamber (28). A feed hopper (6) and a receiving hopper (23) are respectively mounted on both sides of the fluidizing air inlet mechanism (18). A main feed pipeline is mounted at the lower end of the feed hopper (6), and a first feed branch pipeline (8) and a second feed branch pipeline are mounted at the lower end of the main feed pipeline. (11), wherein the first feed branch pipe (8) is connected to the side wall of the fluidized air intake mechanism (18), and the second feed branch pipe (11) is connected to the bottom of the fluidized air intake mechanism (18); the receiving bin (23) is connected to the side wall of the fluidized air intake mechanism (18) through the first discharge pipe (22), and the receiving bin (23) is connected to the bottom of the fluidized air intake mechanism (18) through the second discharge pipe (20); a rotary stirring mechanism (17) is also provided at the bottom of the fluidized air intake mechanism (18).

2. The adjustable gas-solid fluidized bed reaction system according to claim 1, characterized in that: A feed pipe is provided at the upper inlet of the feed hopper (6), and a feed inlet pneumatic ball valve (4) is provided on the feed pipe. A feed inlet (3) is provided at the upper end of the feed pipe. A feed filter assembly (2) is provided at the upper end of the feed inlet (3). A feed filter pneumatic ball valve (1) is provided at the upper inlet of the feed filter assembly (2). A feed hopper air inlet (5) is provided on the top plate of the feed hopper (6). The lower outlet of the feed hopper (6) is connected to the upper inlet of the feed main pipeline. A feed main pipeline ball valve (7) is provided on the feed main pipeline.

3. The adjustable gas-solid fluidized bed reaction system according to claim 1, characterized in that: The upper inlet of the first feed branch pipe (8) and the upper inlet of the second feed branch pipe (11) are both connected to the lower outlet of the main feed pipe. A first feed branch pipe ball valve (10) and a first feed branch pipe air inlet (9) are provided on the first feed branch pipe (8). The first feed branch pipe air inlet (9) is located on the front side of the first feed branch pipe ball valve (10) near the main feed pipe. A second feed branch pipe ball valve (13) and a second feed branch pipe air inlet one (12) and a second feed branch pipe air inlet two (15) are provided on the second feed branch pipe (11). The second feed branch pipe air inlet one (12) and the second feed branch pipe air inlet two (15) are located on the front and rear sides of the second feed branch pipe ball valve (13), respectively.

4. The adjustable gas-solid fluidized bed reaction system according to claim 1, characterized in that: The fluidized air intake mechanism (18) includes an air intake chamber, which is a cylindrical structure with an open top. The upper opening of the air intake chamber is fixedly connected to the lower opening of the reaction chamber (28). A bottom air intake pipe is fixedly installed on the bottom plate of the air intake chamber, and the lower opening of the bottom air intake pipe is the bottom air inlet (16). The opening of the first feed branch pipe (8) away from the main feed pipe is connected to the side wall of the air intake chamber, and the opening of the second feed branch pipe away from the main feed pipe is connected to the bottom plate of the air intake chamber. The first discharge pipe (22) is connected to the side wall of the air intake chamber, and the second discharge pipe (20) is connected to the bottom plate of the air intake chamber.

5. An adjustable gas-solid fluidized bed reaction system according to claim 4, characterized in that: Two stacked air distribution plates (34) are installed on the bottom surface of the air intake chamber.

6. The adjustable gas-solid fluidized bed reaction system according to claim 1, characterized in that: A first discharge pipe ball valve is provided on the first discharge pipe (22), and a second discharge pipe ball valve is provided on the second discharge pipe (20); a top air inlet (24) is provided on the top plate of the receiving hopper (23); a receiving filter assembly (25) is provided at the top outlet of the receiving hopper (23), a top pneumatic ball valve (27) is provided on the upper end of the receiving filter assembly (25), and a receiving filter backflush air inlet (26) is provided between the top pneumatic ball valve (27) and the receiving filter assembly (25).

7. An adjustable gas-solid fluidized bed reaction system according to claim 1, characterized in that: The reaction chamber filtration mechanism (29) includes a filter chamber, which is a cylindrical structure with an open bottom. The lower opening of the filter chamber is fixedly connected to the upper opening of the reaction chamber (28). A fixing plate (46) is fixedly installed in the middle of the inner side of the filter chamber, and multiple mounting holes are provided on the fixing plate (46). A top air inlet (30) and a top air outlet pipe are provided on the top plate of the filter chamber, and a top pneumatic ball valve (31) is provided at the upper end of the top air outlet pipe.

8. An adjustable gas-solid fluidized bed reaction system according to claim 7, characterized in that: Inside the filter chamber, there are primary and secondary filtration components. The primary filtration component is located below the fixed plate (46), and the secondary filtration component is located below the fixed plate (46). The primary filtration component includes a filter rod (45), an activated carbon filter bag (51), and carbon rope. A filter rod (45) is fixedly installed at the lower end of each mounting hole. The filter rod (45) is a cylindrical structure with an open top. Filter holes are provided on the side wall and bottom of the filter rod (45). An activated carbon filter bag (51) is sleeved on the outside of the filter rod (45). The activated carbon filter bag (51) is fixed to the filter rod (45) by binding it with carbon rope. The secondary filtration component includes a filter screen frame (47), a filter... The filter frame (47) is a cylindrical structure with openings at both the top and bottom. The lower end of the filter frame (47) abuts against the upper end face of the fixing plate (46). The upper end of the filter frame (47) extends into the top air outlet pipe. Filter holes are provided on the side wall of the filter frame (47). A filter bag (50) is fitted on the outside of the filter frame (47). A circular filter flange (48) is fixedly installed at the upper opening of the top air outlet pipe. The filter flange (48) is pressed against the upper end of the filter frame (47) to fix the filter frame (47). A flange air inlet (49) is provided on the filter flange (48). Compressed air can be injected into the filter frame (47) through the flange air inlet (49).

9. An adjustable gas-solid fluidized bed reaction system according to claim 5, characterized in that: The rotary stirring mechanism (17) includes a scraper (36), a rotating shaft (37), a turntable (41), and a sealing tube (39). The sealing tube (39) is fixedly installed at the center of the bottom plate of the reaction chamber (28). The rotating shaft (37) is rotatably inserted into the sealing tube (39). The upper end of the rotating shaft (37) passes through two gas distribution plates (34) and is fixedly provided with a scraper (36). A conical plug (35) is fixedly provided at the upper end of the connection between the rotating shaft (37) and the scraper (36). A turntable (41) is fixedly provided at the lower end of the rotating shaft (37).

10. An adjustable gas-solid fluidized bed reaction system according to claim 9, characterized in that: A sealing air inlet (43) is also provided on the sealing tube (39). The sealing air inlet (43) is connected to the air passage inside the sealing tube (39). A sealing air outlet is provided at the upper end of the sealing tube (39). The sealing air outlet faces the outer side of the rotating shaft (37) inside the reaction chamber (28).

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