Coal-fired catalyst reaction tail gas separation and recovery equipment and method

Abstract

The invention belongs to separation equipment, particularly relates to the field of tail gas separation and recovery, and discloses coal-fired catalyst reaction tail gas separation and recovery equipment and method.The coal-fired catalyst reaction tail gas separation and recovery equipment comprises a base, and a filtering and self-cleaning mechanism is fixed to one inner wall of a combustion furnace and comprises a supporting frame; the supporting frame penetrates through one side wall of the flow guide pipeline, the top of the supporting frame is rotationally connected with a first rotating shaft, a rotating cylinder is fixed to the top of the first rotating shaft, an inner ring is fixed to the inner top of the rotating cylinder, a filter cylinder is fixed to the inner wall of the rotating cylinder, and a superheater is fixed to the inner side of the combustion furnace. And an exhaust pipeline is fixed at the tail end of the combustion furnace. According to the coal-fired catalyst reaction tail gas separation and recovery equipment, the filter cylinder plays a role in filtering waste gas, the arc-shaped channel rotating center is symmetrically distributed on the rotating cylinder, the rotating cylinder can rotate under the action of airflow, the annular scraper moves up and down in a reciprocating mode, and dust impurities on the filter cylinder can be automatically scraped away conveniently.

Description

Technical Field

[0001] This invention pertains to separation equipment, and more specifically to the field of tail gas separation and recovery, specifically a tail gas separation and recovery device and method for coal-fired catalyst reaction. Background Technology

[0002] Coal combustion catalysts can reduce the apparent activation energy of coal combustion, lower the ignition point of coal and accelerate the combustion rate of coke, accelerate the breaking of various bonds during coal pyrolysis, and increase the release rate of volatile matter in coal, thereby improving the utilization rate of coal and saving energy. In order to recover the tail gas during the reaction combustion of pulverized coal and catalyst, tail gas separation and recovery equipment is required.

[0003] Existing exhaust gas separation and recovery equipment generally only performs the function of filtration, which facilitates the separation of dust and impurities in exhaust gas. The filter components generally need to be disassembled and cleaned, which is relatively troublesome and difficult to automate. Incomplete combustion of pulverized coal will produce carbon monoxide, which is difficult to remove or utilize. To address the above problems, existing equipment needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a coal-fired catalyst reaction tail gas separation and recovery device and method to solve the problems mentioned in the background art. Existing tail gas separation and recovery devices can generally only achieve the function of filtration, which facilitates the separation of dust and impurities in the exhaust gas. The filter elements generally need to be disassembled and cleaned, which is troublesome and difficult to automate. Incomplete combustion of coal powder will produce carbon monoxide, which is difficult to remove or utilize.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coal-fired catalyst reaction tail gas separation and recovery device, comprising a base, a combustion furnace fixed to the upper end face of the base, an igniter fixed to the inner bottom of the combustion furnace, a burner fixed to the inner wall of the combustion furnace, a feed pipe fixed to the side wall of the combustion furnace, the feed pipe communicating with the burner, a guide pipe fixed to the inner side of the combustion furnace, and a filtration and self-cleaning mechanism fixed to one inner wall of the combustion furnace. The filtration and self-cleaning mechanism includes a support frame, the support frame penetrating one side wall of the guide pipe, a first rotating shaft rotatably connected to the top of the support frame, a rotating cylinder fixed to the top of the first rotating shaft, an inner ring fixed to the inner top of the rotating cylinder, and a filter cylinder fixed to the inner wall of the rotating cylinder.

[0006] An overheater is fixed to the inside of the combustion furnace, and an exhaust pipe is fixed to the end of the combustion furnace.

[0007] Preferably, the side wall of the rotating drum is provided with an arc-shaped channel, and the arc-shaped channels are distributed symmetrically on the rotating drum.

[0008] Preferably, a first bevel gear is fixed to the top of the rotating drum, and first springs are symmetrically fixed to both sides of the top of the support frame. A movable plate is fixed to the top of the first spring, and a ball bearing is movably connected to the top of the movable plate. A movable column is fixed to the bottom of the movable plate. The first spring wraps around the outside of the movable column, and the movable column passes through the top of the rotating drum and is connected to the annular scraper. The annular scraper fits against the inner wall of the filter cylinder, and the annular scraper has through holes evenly distributed around its circumference.

[0009] Preferably, a support plate is fixed to the inner side of the combustion furnace, and brackets are symmetrically fixed to both sides of the lower end face of the support plate. A second rotating shaft is rotatably connected to the two brackets, and a second bevel gear is fixed to the outer side of the second rotating shaft. The second bevel gear is meshed with one side of the first bevel gear, and cams are symmetrically fixed to both ends of the second rotating shaft.

[0010] Preferably, the bottom of both brackets is fixed with a limiting post, and both limiting posts penetrate the compression ring, which rests on two movable plates.

[0011] Preferably, a worm is fixed to the bottom of the first rotating shaft, and the worm is rotatably connected to the bottom of the support frame. A worm wheel is rotatably connected to the inner side of the support frame, and the worm wheel is meshed with one side of the worm. A conveyor belt is fixed to the front side of the worm wheel, and the conveyor belt is rotatably connected to the inner side of the support frame. An extrusion plate is fixed to the outer side of the conveyor belt.

[0012] Preferably, one side of the support frame is connected to the movable rod via a second spring, and the second spring wraps around the outside of the movable rod. The movable rod passes through one side of the support frame, and a hook is fixed to one end of the movable rod, while a striking ball is fixed to the other end of the movable rod. Three second springs are provided, and the three second springs are evenly distributed on the support frame.

[0013] Preferably, the flow guide pipe has an annular channel, and an annular collection box is fixed to the outside of the combustion furnace. The annular collection box is connected to the bottom of the flow guide pipe, and a bottom cover is fixed to the bottom of the annular collection box by bolts.

[0014] Preferably, an annular jet pipe is fixed to the outside of the flow guide pipe, and gas supply pipes are symmetrically fixed to both sides of the combustion furnace, and the gas supply pipes are connected to the annular jet pipe.

[0015] A method for separating and recovering tail gas from a coal-fired catalyst reaction includes the following steps: S1. Coal powder and catalyst are fed into the feed pipe. The burner sprays coal powder, the igniter ignites the coal powder, the burner burns the coal powder, the hot gas flows upward and enters the rotating drum, the filter cartridge filters the exhaust gas, thereby separating the dust and impurities in the exhaust gas. S2. The drum rotates under the action of airflow. The two cams rotate, and the squeezing ring, movable plate, movable column and annular scraper move up and down. The annular scraper automatically scrapes off the dust and impurities on the filter cartridge. The dust and impurities fall into the annular collection box along the annular channel. S3. When the drum rotates, the extrusion plate rotates counterclockwise along with the conveyor belt. The three striking balls strike the guide pipe from top to bottom in sequence and repeatedly, thereby helping the dust and impurities in the annular channel to fall quickly into the annular collection box. S4. After the filtered exhaust gas passes through the arc-shaped channel, air is sprayed through the annular jet pipe. The carbon monoxide produced by the incomplete combustion of pulverized coal reacts with the oxygen in the air to generate heat. More heat passes through the superheater to heat the water in the superheater. The exhaust gas is finally discharged through the exhaust pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This coal-fired catalyst reaction tail gas separation and recovery equipment can achieve the purpose of separation and heating. When the burner sprays out and burns coal powder and catalyst, the high-temperature exhaust gas flows upward and passes through the arc-shaped channel. The annular jet pipe sprays air. The carbon monoxide produced by the incomplete combustion of coal gas reacts with the oxygen in the air to generate heat. More heat can be used to heat the water in the superheater, which makes it easier to make full use of thermal energy. The exhaust gas is finally discharged through the exhaust pipe.

[0017] 2. This coal-fired catalyst reaction tail gas separation and recovery equipment can achieve the purpose of filtration and automatic impurity removal. During the combustion of pulverized coal, the high-temperature exhaust gas flows upward, and the filter cartridge plays a filtering role on the exhaust gas. The arc-shaped channel rotation center is symmetrically distributed on the rotating drum. The rotating drum can rotate under the action of airflow. The two cams rotate, and the squeezing ring, movable plate, movable column and annular scraper move up and down back and forth under the squeezing of the cams and the support of the first spring, which facilitates the automatic scraping of dust and impurities on the filter cartridge.

[0018] 3. This coal-fired catalyst reaction tail gas separation and recovery equipment can achieve the purpose of assisting rapid material feeding. When the annular scraper removes dust and impurities from the filter cartridge, the dust and impurities fall into the annular collection box along the annular channel. When the drum rotates, the conveyor belt rotates and drives the extrusion plate to move. The extrusion plate extrudes the hook rod, and the hook rod, movable rod and striking ball move as a whole. After the extrusion plate passes the hook rod, the hook rod, movable rod and striking ball automatically spring open as a whole, which facilitates the striking of the guide pipe, so as to assist the dust and impurities in the annular channel to fall down quickly. Attached Figure Description

[0019] Figure 1 This is a 3D physical image of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a frontal cross-sectional view of the present invention; Figure 4 This is a front view cross-sectional structural diagram of the filtration and self-cleaning mechanism of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the filtration and self-cleaning mechanism of the present invention; Figure 6 This is a schematic diagram of the connection structure of the first rotating shaft, rotating cylinder, filter cylinder and arc channel of the present invention; Figure 7 This is a schematic diagram of the connection structure of the first spring, movable plate, movable column and annular scraper of the present invention; Figure 8 This is a schematic diagram of the connection structure of the bracket, second rotating shaft, second bevel gear, cam, limiting post and extrusion ring of the present invention; Figure 9 This is a schematic diagram of the connection structure of the support frame, first rotating shaft, worm gear, worm wheel, second spring, movable rod, and striking ball of the present invention; Figure 10 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 11 This is a schematic diagram of the connection structure between the annular jet pipe and the gas supply pipe of the present invention.

[0020] In the diagram: 1. Base; 2. Combustion furnace; 3. Ignition device; 4. Burner; 5. Feed pipe; 6. Guide pipe; 7. Filtration and self-cleaning mechanism; 701. Support frame; 702. First rotating shaft; 703. Rotating cylinder; 704. Inner ring; 705. Filter cartridge; 706. Arc-shaped channel; 707. First bevel gear; 708. First spring; 709. Movable plate; 710. Movable column; 711. Annular scraper; 712. Support plate; 713. Bracket; 7 14. Second rotating shaft; 715. Second bevel gear; 716. Cam; 717. Limiting post; 718. Extrusion ring; 719. Worm gear; 720. Worm wheel; 721. Conveyor belt; 722. Extrusion plate; 723. Second spring; 724. Movable rod; 725. Hook rod; 726. Striking ball; 8. Annular channel; 9. Annular collection box; 10. Bottom cover; 11. Annular jet pipe; 12. Air supply pipe; 13. Superheater; 14. Exhaust pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-11The present invention provides a technical solution: a coal-fired catalyst reaction tail gas separation and recovery device, including a base 1, a combustion furnace 2 fixed on the upper end face of the base 1, an igniter 3 fixed on the inner bottom of the combustion furnace 2, a burner 4 fixed on the inner wall of the combustion furnace 2, a feed pipe 5 fixed on the side wall of the combustion furnace 2, the feed pipe 5 communicating with the burner 4, a guide pipe 6 fixed on the inner side of the combustion furnace 2, and a filtration and self-cleaning mechanism 7 fixed on one inner wall of the combustion furnace 2. The filtration and self-cleaning mechanism 7 includes a support frame 701, the support frame 701 penetrating one side wall of the guide pipe 6, a first rotating shaft 702 rotatably connected to the top of the support frame 701, a rotating cylinder 703 fixed to the top of the first rotating shaft 702, an inner ring 704 fixed to the inner top of the rotating cylinder 703, and a filter cylinder 705 fixed on the inner wall of the rotating cylinder 703.

[0023] An overheater 13 is fixed inside the combustion furnace 2, and an exhaust pipe 14 is fixed at the end of the combustion furnace 2.

[0024] In this embodiment, as Figure 3 , Figure 4 and Figure 6 As shown, an arc-shaped channel 706 is provided on the side wall of the rotating drum 703, and the arc-shaped channel 706 is rotationally symmetrically distributed on the rotating drum 703. When the burner 4 burns the pulverized coal, the hot gas generated by the combustion flows upward. Since the arc-shaped channel 706 is rotationally symmetrically distributed on the rotating drum 703, the rotating drum 703 can rotate under the action of the airflow.

[0025] In this embodiment, as Figure 3 , Figure 4 and Figure 7 As shown, a first bevel gear 707 is fixed to the top of the rotating drum 703, and first springs 708 are symmetrically fixed to both sides of the top of the support frame 701. A movable plate 709 is fixed to the top of the first spring 708, and a ball bearing is movably connected to the top of the movable plate 709. A movable column 710 is fixed to the bottom of the movable plate 709. The first spring 708 is wrapped around the outside of the movable column 710, and the movable column 710 passes through the top of the rotating drum 703 and is connected to the annular scraper 711. The annular scraper 711 is in contact with the inner wall of the filter cylinder 705, and the annular scraper 711 is circumferentially uniform. The filter cartridge 705 has a through hole. When the rotating drum 703 rotates, it drives the first bevel gear 707 to rotate. When the movable plate 709 is squeezed, it will move downward, thereby driving the movable column 710 and the annular scraper 711 to move downward. When the squeezing of the movable plate 709 is released, the movable plate 709 will automatically spring up under the action of the first spring 708. The movable column 710 and the annular scraper 711 will then move upward. When the annular scraper 711 moves downward, it can automatically scrape off the dust and impurities on the filter cartridge 705. When the annular scraper 711 moves upward, the dust and impurities will fall through the through hole, which facilitates the automatic cleaning effect.

[0026] In this embodiment, as Figure 3, Figure 4 and Figure 8 As shown, a support plate 712 is fixed to the inner side of the combustion furnace 2, and brackets 713 are symmetrically fixed to both sides of the lower end face of the support plate 712. A second rotating shaft 714 is rotatably connected to the two brackets 713, and a second bevel gear 715 is fixed to the outer side of the second rotating shaft 714. The second bevel gear 715 is meshed with one side of the first bevel gear 707. Cams 716 are symmetrically fixed to both ends of the second rotating shaft 714. The rotation of the first bevel gear 707 can drive the second bevel gear 715 to rotate, thereby driving the second rotating shaft 714 and the two cams 716 to rotate.

[0027] In this embodiment, as Figure 3 , Figure 4 and Figure 8 As shown, the bottom of both brackets 713 is fixed with limit posts 717, and both limit posts 717 pass through the compression ring 718. The compression ring 718 rests on the two movable plates 709. When the cam 716 rotates, the compression ring 718 is squeezed by the cam 716 and moves downward, thereby squeezing the two movable plates 709 downward. The two limit posts 717 play a limiting role for the compression ring 718. When the drum 703 rotates, the balls on the movable plates 709 roll, which helps to reduce the friction between the movable plates 709 and the compression ring 718.

[0028] In this embodiment, as Figure 3 , Figure 4 , Figure 5 , Figure 9 and Figure 10 As shown, a worm gear 719 is fixed to the bottom of the first rotating shaft 702, and the worm gear 719 is rotatably connected to the bottom of the support frame 701. A worm wheel 720 is rotatably connected to the inner side of the support frame 701, and the worm wheel 720 is meshed with one side of the worm gear 719. A conveyor belt 721 is fixed to the front side of the worm wheel 720, and the conveyor belt 721 is rotatably connected to the inner side of the support frame 701. An extrusion plate 722 is fixed to the outer side of the conveyor belt 721. The rotation of the rotating drum 703 can drive the worm gear 719 to rotate, thereby driving the worm wheel 720 to rotate. The operation of the conveyor belt 721 drives the extrusion plate 722 to move.

[0029] In this embodiment, as Figure 3 , Figure 4 , Figure 5 , Figure 9 and Figure 10As shown, one side of the support frame 701 is connected to the movable rod 724 via a second spring 723, and the second spring 723 wraps around the outside of the movable rod 724. The movable rod 724 passes through one side of the support frame 701, and a hook rod 725 is fixed to one end of the movable rod 724, while a striking ball 726 is fixed to the other end. Three second springs 723 are provided, and the three second springs 723 are evenly distributed on the support frame 701. When the conveyor belt 721 rotates counterclockwise, the extrusion plate 722 will extrude the hook rod 725. The movement of the hook rod 725 drives the movable rod 724 and the striking ball 726 to move. After the extrusion plate 722 passes the hook rod 725, the hook rod 725, the movable rod 724, and the striking ball 726 can automatically spring open under the action of the second spring 723 and strike the guide pipe 6, thus achieving a vibration effect.

[0030] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, an annular channel 8 is provided on the guide pipe 6, and an annular collection box 9 is fixed on the outside of the combustion furnace 2. The annular collection box 9 is connected to the bottom of the guide pipe 6. The bottom of the annular collection box 9 is fixed with a bottom cover 10 by bolts. During the process of the exhaust gas passing through the arc-shaped channel 706, the filter cartridge 705 plays a filtering role for the exhaust gas, which facilitates the separation of dust and impurities in the exhaust gas. When the filter cartridge 705 is cleaned by the annular scraper 711, the dust and impurities fall into the annular channel 8 and fall into the annular collection box 9 along the annular channel 8. The three tapping balls 726 can repeatedly tap the guide pipe 6 to facilitate the rapid falling of impurities in the annular channel 8 into the annular collection box 9.

[0031] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 11 As shown, an annular jet pipe 11 is fixed to the outside of the flow guide pipe 6, and gas supply pipes 12 are symmetrically fixed on both sides of the combustion furnace 2. The gas supply pipes 12 are connected to the annular jet pipe 11. Air can enter the annular jet pipe 11 through the gas supply pipe 12. The carbon monoxide produced by the incomplete combustion of pulverized coal reacts with the oxygen in the air to release heat, which facilitates better recovery of heat energy.

[0032] According to another aspect of the present invention, a method for separating and recovering tail gas from a coal-fired catalyst reaction is provided, comprising the following steps: S1. Powdered coal and catalyst are fed into the feed pipe 5. The burner 4 sprays out powdered coal, the igniter 3 ignites the powdered coal, the burner 4 burns the powdered coal, the hot gas flows upward and enters the rotating drum 703, the filter cartridge 705 filters the exhaust gas, thereby separating the dust impurities in the exhaust gas. S2. The rotating drum 703 rotates under the action of airflow. The two cams 716 rotate, and the squeezing ring 718, the movable plate 709, the movable column 710 and the annular scraper 711 move up and down. The annular scraper 711 automatically scrapes off the dust and impurities on the filter cartridge 705. The dust and impurities fall into the annular collection box 9 along the annular channel 8. S3. When the rotating drum 703 rotates, the extrusion plate 722 rotates counterclockwise along with the conveyor belt 721, and the three striking balls 726 strike the guide pipe 6 from top to bottom in sequence and repeatedly, thereby assisting the dust and impurities in the annular channel 8 to fall quickly into the annular collection box 9. S4. After the filtered exhaust gas passes through the arc-shaped channel 706, air is sprayed through the annular jet pipe 11. The carbon monoxide produced by the incomplete combustion of pulverized coal reacts with the oxygen in the air to generate heat. More heat passes through the superheater 13 to heat the water in the superheater 13. The exhaust gas is finally discharged through the exhaust pipe 14.

[0033] The working principle of this device is as follows: Coal powder and catalyst enter the burner 4 through the feed pipe 5. The burner 4 sprays out coal powder, and the igniter 3 ignites the coal powder. The burner 4 burns the coal powder, and the hot gas flows upward and enters the rotating drum 703. The filter cartridge 705 filters the exhaust gas. Dust and impurities remain on the inner wall of the filter cartridge 705. After the filtered exhaust gas passes through the arc-shaped channel 706, the air enters the annular jet pipe 11 through the air supply pipe 12 and is sprayed out. The carbon monoxide produced by the incomplete combustion of coal powder reacts with the oxygen in the air to generate heat. More heat passes through the superheater 13 to heat the water in the superheater 13. The exhaust gas is finally discharged through the exhaust pipe 14. During the process of the high-temperature exhaust gas passing through the arc-shaped channel 706, the rotating drum 703 rotates under the action of the airflow. The two cams 716 rotate under the action of the first bevel gear 707, the second bevel gear 715, and the second rotating shaft 714. When the cams 716 squeeze the squeeze ring 718, the squeeze ring 718 squeezes... As the two movable plates 709 move downwards and the annular scraper 711 moves downwards, when the cam 716 releases the pressure on the compression ring 718, the two movable plates 709 automatically spring up under the action of the first spring 708, and the annular scraper 711 moves up and down to facilitate the automatic scraping of dust and impurities on the filter cartridge 705. The dust and impurities fall into the annular collection box 9 along the annular channel 8. After removing the bottom cover 10, the dust and impurities can be discharged. At the same time, the conveyor belt 721 moves along the first rotating shaft 702 and the worm gear 719. Driven by the worm gear 720, it rotates counterclockwise. The extrusion plate 722 moves and extrudes the three hook rods 725 in sequence. When the hook rods 725 are extruded and move, the movable rod 724 and the striking ball 726 move accordingly. After the extrusion plate 722 passes the hook rods 725, the hook rods 725, the movable rod 724 and the striking ball 726 automatically spring open under the action of the second spring 723, which facilitates automatic knocking on the guide pipe 6 and facilitates the dust and impurities in the auxiliary annular channel 8 to fall quickly into the annular collection box 9.

[0034] In summary, the coal-fired catalyst reaction tail gas separation and recovery equipment and method achieve the goals of separation and heating, filtration, automatic impurity removal, and auxiliary rapid feeding, thus meeting people's usage needs.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal-fired catalyst reaction tail gas separation and recovery device, comprising a base (1), characterized in that: A combustion furnace (2) is fixed to the upper surface of the base (1). An igniter (3) is fixed to the bottom of the combustion furnace (2). A burner (4) is fixed to the inner wall of the combustion furnace (2). A feed pipe (5) is fixed to the side wall of the combustion furnace (2). The feed pipe (5) is connected to the burner (4). A guide pipe (6) is fixed to the inner side of the combustion furnace (2). A filter and self-cleaning mechanism (7) is fixed to one inner wall of the combustion furnace (2). The filter and self-cleaning mechanism (7) includes a support frame (701). The support frame (701) passes through one side wall of the guide pipe (6). A first rotating shaft (702) is rotatably connected to the top of the support frame (701). A rotating cylinder (703) is fixed to the top of the first rotating shaft (702). An inner ring (704) is fixed to the top of the rotating cylinder (703). A filter cylinder (705) is fixed to the inner wall of the rotating cylinder (703). An overheater (13) is fixed inside the combustion furnace (2), and an exhaust pipe (14) is fixed at the end of the combustion furnace (2).

2. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: The rotating drum (703) has an arc-shaped channel (706) on its side wall, and the arc-shaped channel (706) is distributed symmetrically on the rotating drum (703).

3. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: The top of the rotating drum (703) is fixed with a first bevel gear (707), and the top two sides of the support frame (701) are symmetrically fixed with first springs (708). The top of the first spring (708) is fixed with a movable plate (709), and the top of the movable plate (709) is movably connected with a ball. The bottom of the movable plate (709) is fixed with a movable column (710). The first spring (708) is wrapped around the outside of the movable column (710), and the movable column (710) passes through the top of the rotating drum (703) and is connected to the annular scraper (711). The annular scraper (711) is in contact with the inner wall of the filter cylinder (705), and the annular scraper (711) is evenly provided with through holes in the circumferential direction.

4. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 3, characterized in that: The combustion furnace (2) has a support plate (712) fixed on its inner side, and brackets (713) are symmetrically fixed on both sides of the lower end face of the support plate (712). A second rotating shaft (714) is rotatably connected to the two brackets (713), and a second bevel gear (715) is fixed on the outer side of the second rotating shaft (714). The second bevel gear (715) is meshed with one side of the first bevel gear (707). Cams (716) are symmetrically fixed at both ends of the second rotating shaft (714).

5. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 4, characterized in that: The bottom of each of the two brackets (713) is fixed with a limiting post (717), and both limiting posts (717) pass through the compression ring (718), which rests on two movable plates (709).

6. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: The bottom of the first rotating shaft (702) is fixed with a worm gear (719), and the worm gear (719) is rotatably connected to the bottom of the support frame (701). The inner side of the support frame (701) is rotatably connected with a worm wheel (720), and the worm wheel (720) is meshed with one side of the worm gear (719). The front side of the worm wheel (720) is fixed with a conveyor belt (721), and the conveyor belt (721) is rotatably connected to the inner side of the support frame (701). The outer side of the conveyor belt (721) is fixed with an extrusion plate (722).

7. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: One side of the support frame (701) is connected to the movable rod (724) by a second spring (723), and the second spring (723) wraps around the outside of the movable rod (724). The movable rod (724) passes through one side of the support frame (701), and a hook rod (725) is fixed at one end of the movable rod (724). A striking ball (726) is fixed at the other end of the movable rod (724). There are three second springs (723), and the three second springs (723) are evenly distributed on the support frame (701).

8. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: The flow guide pipe (6) is provided with an annular channel (8), and an annular collection box (9) is fixed on the outside of the combustion furnace (2). The annular collection box (9) is connected to the bottom of the flow guide pipe (6), and the bottom of the annular collection box (9) is fixed with a bottom cover (10) by bolts.

9. The coal-fired catalyst reaction tail gas separation and recovery equipment according to claim 1, characterized in that: An annular jet pipe (11) is fixed to the outside of the flow guide pipe (6), and gas supply pipes (12) are symmetrically fixed on both sides of the combustion furnace (2), and the gas supply pipes (12) are connected to the annular jet pipes (11).

10. A method for separating and recovering tail gas from a coal-fired catalyst reaction, applied to the coal-fired catalyst reaction tail gas separation and recovery equipment according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Powdered coal and catalyst are fed into the feed pipe (5), the burner (4) sprays out powdered coal, the igniter (3) ignites the powdered coal, the burner (4) burns the powdered coal, the hot gas flows upward and enters the rotating drum (703), the filter cartridge (705) filters the exhaust gas, thereby separating the dust impurities in the exhaust gas. S2. The drum (703) rotates under the action of airflow. The two cams (716) rotate, and the squeezing ring (718), the movable plate (709), the movable column (710) and the annular scraper (711) move up and down. The annular scraper (711) automatically scrapes off the dust and impurities on the filter cartridge (705). The dust and impurities fall into the annular collection box (9) along the annular channel (8). S3. When the drum (703) rotates, the extrusion plate (722) rotates counterclockwise along with the conveyor belt (721), and the three striking balls (726) strike the guide pipe (6) from top to bottom in sequence and repeatedly, thereby assisting the dust and impurities in the annular channel (8) to fall quickly into the annular collection box (9). S4. After the filtered exhaust gas passes through the arc-shaped channel (706), air is sprayed through the annular jet pipe (11). The carbon monoxide produced by the incomplete combustion of pulverized coal reacts with the oxygen in the air to generate heat. More heat passes through the superheater (13) to heat the water in the superheater (13). The exhaust gas is finally discharged through the exhaust pipe (14).

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