Rotary kiln gas-solid separation device based on ceramic membrane

Abstract

The utility model relates to a rotary kiln gas-solid separation device based on a ceramic membrane, which comprises a separation box communicated with a discharge cover, the separation box is divided into an exhaust chamber and a blowback chamber by a first partition plate, the ceramic membrane is arranged below the first partition plate, and a second partition plate is arranged between the first partition plate and the ceramic membrane. The blowback chamber is divided into a first blowback chamber and a second blowback chamber by a second partition plate, an exhaust hole is formed in the exhaust chamber, a first exhaust hole is formed in the top of the first blowback chamber, a second exhaust hole is formed in the top of the second blowback chamber, a first air cylinder is arranged above the first exhaust hole, and a telescopic rod of the first air cylinder is provided with a first sealing piston; a second air cylinder is arranged above the second exhaust hole, a telescopic rod of the second air cylinder is provided with a second closed piston, and back flushing devices are arranged above the ceramic membranes of the first back flushing chamber and the second back flushing chamber and used for blowing off materials adsorbed by the ceramic membranes. The material recycling device has the advantages of being simple in structure, capable of recycling materials, preventing the materials from polluting the environment, reducing cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal equipment, in particular to a ceramic membrane-based rotary kiln gas-solid separation device. Background Art

[0002] As a common industrial equipment, rotary kiln is widely used in various industries because of its ability to achieve uniform heating and high production efficiency. However, in the sintering process of certain specific materials, such as the sintering of lithium iron phosphate, the positive electrode material of lithium batteries, the material is scrapped due to the oxidation reaction of lithium iron phosphate with oxygen in the air at high temperature. To avoid this situation, it is usually necessary to continuously inject protective gas. However, when the protective gas is discharged, some materials will be taken away, resulting in material waste and environmental pollution.

[0003] To solve this problem, a dust collector is usually added to filter the materials. However, the current dust collector filter material cannot withstand high temperatures for a long time, requires water cooling, and has a complex process. At the same time, the materials collected by the dust collector are often contaminated and cannot be reused.

[0004] Ceramic membrane is a thin film made of ceramic material, which is usually used to provide protection, isolation or filtration functions in various applications. Ceramic membranes can be single-layer or multi-layer structures with excellent chemical stability, high temperature resistance, corrosion resistance and mechanical strength. They can be used in various fields, such as electronics, energy, chemical industry and biomedicine. In the field of electronics, ceramic membranes are often used to prepare components such as capacitors, resistors and sensors. In the field of energy, ceramic membranes can be used in devices such as solid oxide fuel cells (SOFC) and polymer electrolyte fuel cells (PEFC). In the chemical industry, ceramic membranes can be used in separation and filtration processes, such as gas separation, liquid separation and purification.

[0005] Therefore, how to apply ceramic membrane to rotary kiln to filter materials and protect the environment, recycle materials and reduce costs, and avoid the need for water cooling of existing dust collectors, complex processes and pollution of collected materials that cannot be reused is a technical problem that needs to be solved urgently. Utility Model Content

[0006] To this end, the utility model provides a rotary kiln gas-solid separation device based on ceramic membrane, which can mainly filter materials to protect the environment, recycle materials to reduce costs, and avoid the technical problems of existing dust collectors requiring water cooling, complex processes, and pollution to collected materials that cannot be reused.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A gas-solid separation device for a rotary kiln based on a ceramic membrane, comprising a sealed separation box; the separation box is arranged above the discharge hood of the rotary kiln and is connected to the discharge hood of the rotary kiln; a first partition is arranged on the upper inner part of the separation box; a sealed exhaust chamber is formed between the first partition and the top wall of the separation box; a ceramic membrane is arranged in the separation box below the first partition; a sealed back-blowing chamber is formed between the ceramic membrane and the first partition; a second partition is arranged between the first partition and the ceramic membrane; the second partition divides the back-blowing chamber into a first sealed back-blowing chamber and a second sealed back-blowing chamber; the side wall of the separation box of the exhaust chamber is provided with a through exhaust hole for discharging protective gas; the The first partition is provided with a first exhaust hole; the first partition at the top of the second back-blowing chamber is provided with a second exhaust hole; the separation box above the first exhaust hole is provided with a first cylinder; the telescopic rod of the first cylinder is provided with a first closing piston, and under the drive of the first cylinder, the first closing piston closes or opens the first exhaust hole; the separation box above the second exhaust hole is provided with a second cylinder; the telescopic rod of the second cylinder is provided with a second closing piston, and under the drive of the second cylinder, the second closing piston closes or opens the second exhaust hole; back-blowing devices are provided above the ceramic membranes of the first back-blowing chamber and the second back-blowing chamber, which are used to blow off the materials adsorbed by the ceramic membranes.

[0009] Optionally, the backblowing device includes a first backblowing pipe; one end of the first backblowing pipe is used to connect to high-pressure gas, and the other end passes through the side wall of the separation box and extends above the ceramic membrane; the first backblowing pipe above the ceramic membrane is provided with multiple air nozzles toward one side of the ceramic membrane.

[0010] Preferably, the backblowing device also includes multiple second backblowing tubes connected to the first backblowing tube; the multiple second backblowing tubes are located above the ceramic membrane and are in a cross-shaped structure with the first backblowing tube; the multiple second backblowing tubes are each provided with multiple air nozzles facing one side of the ceramic membrane.

[0011] Preferably, the exhaust hole is provided with an exhaust duct.

[0012] Preferably, a blower is provided on the exhaust duct.

[0013] Optionally, it also includes a control unit; a first pressure sensor is provided above the ceramic membrane at the bottom of the first back-blowing chamber, for detecting the pressure of the ceramic membrane at the bottom of the first back-blowing chamber; a second pressure sensor is provided above the ceramic membrane at the bottom of the second back-blowing chamber, for detecting the pressure of the ceramic membrane at the bottom of the second back-blowing chamber; the control unit is electrically connected to the first pressure sensor, the second pressure sensor, the first cylinder and the second cylinder, respectively, to obtain the pressure values ​​collected by the first pressure sensor and the second pressure sensor, and to control the opening or closing of the first cylinder and the second cylinder.

[0014] Preferably, the separation box is composed of a cylindrical separation part and a conical funnel-shaped introduction part; the bottom of the introduction part is connected to the discharge cover of the rotary kiln; and the ceramic membrane is arranged at the bottom of the separation part.

[0015] The utility model has at least the following beneficial effects:

[0016] It is provided with a separation box connected with the discharge cover, the separation box is divided into an exhaust chamber and a back-blowing chamber by a first partition, a ceramic membrane is arranged below the first partition, a second partition is arranged between the first partition and the ceramic membrane, the back-blowing chamber is divided into a first back-blowing chamber and a second back-blowing chamber by the second partition, an exhaust hole is arranged in the exhaust chamber, a first exhaust hole is arranged at the top of the first back-blowing chamber, a second exhaust hole is arranged at the top of the second back-blowing chamber, a first cylinder is arranged above the first exhaust hole, a telescopic rod of the first cylinder is provided with a first closing piston for closing or opening the first exhaust hole, a second cylinder is arranged above the second exhaust hole, a telescopic rod of the second cylinder is provided with a second closing piston for closing or opening the second exhaust hole, and a back-blowing device is arranged above the ceramic membranes of the first back-blowing chamber and the second back-blowing chamber for blowing off the material adsorbed by the ceramic membrane. When in use, the protective gas injected from the air inlet is filtered by the ceramic membrane after passing through the rotary kiln cylinder, and the material is blocked by the ceramic membrane. The filtered protective gas enters the first back-blowing chamber and the second back-blowing chamber, and then enters the exhaust chamber from the first exhaust hole or the second exhaust hole, and is discharged from the exhaust hole. The material is filtered to avoid pollution to the environment; when the ceramic membrane of the first back-blowing chamber or the second back-blowing chamber is blocked by the material to a threshold value, the first cylinder drives the first closed piston to block the first exhaust hole, and the back-blowing device of the first back-blowing chamber starts to back-blowing the ceramic membrane of the first back-blowing chamber, blowing off the adsorbed material, and discharging from the discharge port; or the second cylinder drives the second closed piston to block the second exhaust hole, and the back-blowing device of the second back-blowing chamber starts to back-blowing the ceramic membrane of the second back-blowing chamber, blowing off the adsorbed material, and discharging from the discharge port, the material is recovered, and the cost is reduced. At the same time, the use of ceramic membranes for filtering the materials of the present application can also avoid the industrial complexity brought about by the use of dust collectors in the prior art, the pollution of the collected materials, and the problem of being unable to be reused.

[0017] It can be seen that the ceramic membrane-based rotary kiln gas-solid separation device of the utility model has the advantages of simple structure, being able to recycle materials, avoiding environmental pollution by materials, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly explain the prior art and the present invention, the following briefly introduces the drawings required for describing the prior art and the present invention. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 This is a front cross-sectional view of a rotary kiln gas-solid separation device based on a ceramic membrane according to the utility model;

[0021] Figure 2 This is an accessory of a rotary kiln gas-solid separation device based on ceramic membrane. Figure 1 A partial enlarged view of part A;

[0022] Figure 3 It is a right sectional view of a rotary kiln gas-solid separation device based on ceramic membrane of the utility model;

[0023] Figure 4 This is a schematic diagram of a backflush device of a rotary kiln gas-solid separation device based on a ceramic membrane according to the utility model;

[0024] Description of reference numerals:

[0025] 1. Discharge cover; 2. Separation box; 201. Separation part; 202. Inlet part; 203. First partition; 204. Exhaust chamber; 205. Second partition; 206. Back-blowing chamber; 2061. First back-blowing chamber; 2062. Second back-blowing chamber; 207. Second exhaust hole; 208. First exhaust hole; 209. Exhaust hole; 3. Ceramic membrane; 4. First closed piston; 5. First cylinder; 6. Second closed piston; 7. Second cylinder; 8. First back-blowing pipe; 9. Second back-blowing pipe; 10. Air nozzle; 11. Second pressure sensor; 12. Exhaust duct; 13. Rotary kiln cylinder; 14. Feed cover; 15. Feed seal; 16. Discharge seal; 17. Discharge port; 18. Air inlet; 19. First pressure sensor. DETAILED DESCRIPTION

[0026] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0027] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0028] The terms such as "upper", "lower", "left", "right", "middle", etc. used in this application are usually used to facilitate intuitive understanding by comparing with the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this application, changes in these relative positional relationships should also be regarded as the scope of this application.

[0029] The utility model is a rotary kiln gas-solid separation device based on ceramic membrane, such as Figures 1 to 4As shown, the rotary kiln of the prior art is generally provided with a rotary kiln cylinder 13, a feed cover 14 is provided at one end of the rotary kiln cylinder 13, and a discharge cover 1 is provided at the other end. In order to seal the feed cover 14, a feed seal 15 is provided at the feed cover 14, and in order to seal the discharge cover 1, a discharge seal is provided at the discharge cover 1. In order to inject protective gas, an air inlet 18 is usually provided on the feed cover 14, and the protective gas is injected into the rotary kiln cylinder 13 through the air inlet 18. A discharge port 17 is provided at the bottom of the discharge cover 1, and the sintered material is discharged from the discharge port 17. In order to separate the material when the injected protective gas is discharged, to avoid environmental pollution caused by taking away the material and wasting the material, a closed separation box 2 is provided, and the separation box 2 is arranged above the discharge cover 1 of the rotary kiln, and is connected to the discharge cover 1 of the rotary kiln. A first partition plate 203 is provided in the upper part of the separation box 2, and a closed exhaust chamber 204 is formed between the first partition plate 203 and the top wall of the separation box 2. A ceramic membrane 3 is provided in the separation box 2 below the first partition plate 203, and a closed back-blowing chamber 206 is formed between the ceramic membrane 3 and the first partition plate 203. A second partition plate 205 is provided between the first partition plate 203 and the ceramic membrane 3, and the second partition plate 205 divides the back-blowing chamber 206 into a closed first back-blowing chamber 2061 and a second back-blowing chamber 2062. A through exhaust hole 209 is provided on the side wall of the separation box 2 where the exhaust chamber 204 is located, for discharging protective gas. A through first exhaust hole 208 is provided on the first partition plate 203 at the top of the first back-blowing chamber 2061, and a through second exhaust hole 207 is provided on the first partition plate 203 at the top of the second back-blowing chamber 2062. The separation box 2 above the first exhaust hole 208 is provided with a first cylinder 5, and the telescopic rod of the first cylinder 5 is provided with a first closed piston 4. Under the drive of the first cylinder 5, the first closed piston 4 closes or opens the first exhaust hole 208. The separation box 2 above the second exhaust hole 207 is provided with a second cylinder 7, and the telescopic rod of the second cylinder 7 is provided with a second closed piston 6. Under the drive of the second cylinder 7, the second closed piston 6 closes or opens the second exhaust hole 207. A backflush device is provided above the ceramic membrane 3 of the first backflush chamber 2061 and the second backflush chamber 2062, which is used to blow off the material adsorbed by the ceramic membrane 3.In this way, the protective gas injected from the air inlet 18 is filtered by the ceramic membrane 3 after passing through the rotary kiln cylinder 13, and the material is blocked by the ceramic membrane 3. The filtered protective gas enters the first back-blowing chamber 2061 and the second back-blowing chamber 2062, and then enters the exhaust chamber 204 from the first exhaust hole 208 or the second exhaust hole 207, and is discharged from the exhaust hole 209. The material is filtered to avoid pollution to the environment. When the ceramic membrane 3 of the first back-blowing chamber 2061 or the second back-blowing chamber 2062 is blocked by the material and reaches a threshold value, The first cylinder 5 drives the first closed piston 4 to block the first exhaust hole 208, and the backblowing device of the first backblowing chamber 2061 starts to backblow the ceramic membrane 3 of the first backblowing chamber 2061, so that the adsorbed material is blown off and discharged from the discharge port 17; or the second cylinder 7 drives the second closed piston 6 to block the second exhaust hole 207, and the backblowing device of the second backblowing chamber 2062 starts to backblow the ceramic membrane 3 of the second backblowing chamber 2062, so that the adsorbed material is blown off and discharged from the discharge port 17, the material is recovered, and the cost is reduced.

[0030] Optionally, an embodiment of the present application provides a preferred implementation of a backblowing device, specifically: the backblowing device includes a first backblowing pipe 8, one end of the first backblowing pipe 8 is used to connect to high-pressure gas, and the other end passes through the side wall of the separation box 2 and extends above the ceramic membrane 3. The first backblowing pipe 8 above the ceramic membrane 3 is provided with a plurality of air nozzles 10 toward one side of the ceramic membrane 3. By intermittently injecting high-pressure gas into the first backblowing pipe 8, the high-pressure gas is ejected from the air nozzle 10 to backblow the ceramic membrane 3.

[0031] Preferably, in order to strengthen the backblowing effect and enhance the airflow injection area, the backblowing device also includes multiple second backblowing tubes 9 connected to the first backblowing tube 8. The multiple second backblowing tubes 9 are located above the ceramic membrane 3 and are in a cross-shaped structure with the first backblowing tube 8. The multiple second backblowing tubes 9 are each provided with multiple air nozzles 10 facing one side of the ceramic membrane 3.

[0032] Preferably, in order to recycle and reuse the protective gas, an exhaust pipe 12 is usually provided at the exhaust hole 209 .

[0033] Preferably, in order to enhance the circulation of the protective gas, a blower is provided on the exhaust duct 12 .

[0034] Optionally, in practical applications, a control unit is also provided, and the control unit can be an industrial PLC controller. A first pressure sensor 19 is provided above the ceramic membrane 3 at the bottom of the first back-blowing chamber 2061, which is used to detect the pressure of the ceramic membrane 3 at the bottom of the first back-blowing chamber 2061. Specifically, the first pressure sensor 19 can be in contact with the top surface of the ceramic membrane 3. When the ceramic membrane 3 is blocked by materials, it will bend upward under the action of the protective gas, and squeeze the first pressure sensor 19, and the first pressure sensor 19 detects the pressure. A second pressure sensor 11 is provided above the ceramic membrane 3 at the bottom of the second back-blowing chamber 2062, which is used to detect the pressure of the ceramic membrane 3 at the bottom of the second back-blowing chamber 2062. For details, reference can be made to the setting and principle of the aforementioned first pressure sensor 19. The control unit is electrically connected to the first pressure sensor 19, the second pressure sensor 11, the first cylinder 5 and the second cylinder 7 respectively, to obtain the pressure values ​​collected by the first pressure sensor 19 and the second pressure sensor 11, and to control the opening or closing of the first cylinder 5 and the second cylinder 7. When the pressure values ​​collected by the specific first pressure sensor 19 and the second pressure sensor 11 exceed the threshold value, the control unit sends a work instruction to the first cylinder 5 and the second cylinder 7, and the first cylinder 5 and the second cylinder 7 make the first closing piston 4 and the second closing piston 6 block the first exhaust hole 208 and the second exhaust hole 207. At the same time, the corresponding back-blowing device is started to back-blow the ceramic membrane 3.

[0035] Preferably, in order to facilitate the material filtered by the ceramic membrane 3 to fall into the feed cover 14, the separation box 2 is composed of a cylindrical separation part 201 and a conical funnel-shaped inlet part 202, the bottom of the inlet part 202 is connected to the discharge cover 1 of the rotary kiln, and the ceramic membrane 3 is arranged at the bottom of the separation part 201, so that the filtered material falls from the conical funnel-shaped inlet part 202 into the discharge cover 1, and then discharged from the discharge port 17.

[0036] Here’s how this application works:

[0037] In the initial state, the first cylinder 5 is started, and the first sealing piston 4 blocks the first exhaust hole 208; the second cylinder 7 is closed, and the second sealing piston 6 leaves the second exhaust hole 207, and the second exhaust hole 207 is opened;

[0038] The protective gas is injected through the air inlet 18, passes through the rotary kiln cylinder 13, the ceramic membrane 3 of the second back-blowing chamber 2062, enters the second back-blowing chamber 2062, enters the exhaust chamber 204 from the second exhaust hole 207, and is discharged from the exhaust hole 209; the material is filtered by the ceramic membrane 3; when the material accumulates to a certain extent, the ceramic membrane 3 of the second back-blowing chamber 2062 is blocked, the second pressure sensor 11 is pressurized, and the control unit obtains the real-time pressure value collected by the second pressure sensor 11. When the real-time pressure value exceeds the threshold value, the control unit sends a closing command to the first cylinder 5 and a working command to the second cylinder 7; the first cylinder 5 is reset, the first closed piston 4 leaves the first exhaust hole 208, the first exhaust hole 208 is opened, and the protective gas enters the exhaust chamber 204 from the first exhaust hole 208, and is discharged from the exhaust hole 209; the second cylinder 7 is started, and the second closed piston 6 blocks the second exhaust hole 207. At this time, the high-pressure gas is intermittently injected into the first back-blowing pipe 8 , the ceramic membrane 3 of the second back-blowing chamber 2062 is back-blown and put on standby, the blown-off material falls into the discharge hood 1, and then is discharged from the discharge port 17; then the ceramic membrane 3 of the first back-blowing chamber 2061 is blocked, the first pressure sensor 19 is pressurized, and the control unit obtains the real-time pressure value collected by the first pressure sensor 19. When the real-time pressure value exceeds the threshold value, the control unit sends a working instruction to the first cylinder 5 and sends a closing instruction to the second cylinder 7; the second cylinder 7 is reset, the second closed piston 6 leaves the second exhaust hole 207, the second exhaust hole 207 is opened, and the protective gas enters the exhaust chamber 204 from the second exhaust hole 207, and then is discharged from the exhaust hole 209; the first cylinder 5 is started, the first closed piston 4 blocks the first exhaust hole 208, and at this time, the high-pressure gas is intermittently injected into the first back-blowing pipe 8, the ceramic membrane 3 of the first back-blowing chamber 2061 is back-blown and put on standby, the blown-off material falls into the discharge hood 1, and then is discharged from the discharge port 17; and so on.

[0039] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A ceramic membrane-based rotary kiln gas-solid separation device, characterized in that: The invention comprises a sealed separation box (2); the separation box (2) is arranged above the discharge cover (1) of the rotary kiln and is in communication with the discharge cover (1) of the rotary kiln; a first partition (203) is arranged in the upper part of the separation box (2); a sealed exhaust chamber (204) is formed between the first partition (203) and the top wall of the separation box (2); a ceramic membrane (3) is arranged in the separation box (2) below the first partition (203); a space between the ceramic membrane (3) and the first partition (203) is formed. A closed back-blowing chamber (206) is formed; a second baffle (205) is provided between the first baffle (203) and the ceramic membrane (3); the second baffle (205) divides the back-blowing chamber (206) into a closed first back-blowing chamber (2061) and a second back-blowing chamber (2062); a through exhaust hole (209) is provided on the side wall of the separation box (2) of the exhaust chamber (204) for discharging protective gas; the first baffle at the top of the first back-blowing chamber (2061) (203) is provided with a through first exhaust hole (208); the first partition plate (203) at the top of the second back-blowing chamber (2062) is provided with a through second exhaust hole (207); the separation box (2) above the first exhaust hole (208) is provided with a first cylinder (5); the telescopic rod of the first cylinder (5) is provided with a first closing piston (4), and under the drive of the first cylinder (5), the first closing piston (4) closes or opens the first exhaust hole (208); the separation box (2) above the second exhaust hole (207) is provided with a second cylinder (7); the telescopic rod of the second cylinder (7) is provided with a second closing piston (6), and under the drive of the second cylinder (7), the second closing piston (6) closes or opens the second exhaust hole (207); back-blowing devices are provided above the ceramic membranes (3) of the first back-blowing chamber (2061) and the second back-blowing chamber (2062), for blowing off the materials adsorbed by the ceramic membranes (3).

2. A ceramic membrane-based rotary kiln gas-solid separation device according to claim 1, characterized in that: The back-blowing device comprises a first back-blowing pipe (8); one end of the first back-blowing pipe (8) is used to receive high-pressure gas, and the other end passes through the side wall of the separation box (2) and extends above the ceramic membrane (3); the first back-blowing pipe (8) above the ceramic membrane (3) is provided with a plurality of air nozzles (10) toward one side of the ceramic membrane (3).

3. A ceramic membrane-based rotary kiln gas-solid separation device according to claim 2, characterized in that: The back-blowing device also includes a plurality of second back-blowing tubes (9) connected to the first back-blowing tube (8); the plurality of second back-blowing tubes (9) are located above the ceramic membrane (3) and are in a cross-shaped structure with the first back-blowing tube (8); and the plurality of second back-blowing tubes (9) are each provided with a plurality of air nozzles (10) on one side of the ceramic membrane (3).

4. The ceramic membrane-based rotary kiln gas-solid separation device according to claim 1, characterized in that: The exhaust hole (209) is provided with an exhaust pipe (12).

5. The ceramic membrane-based rotary kiln gas-solid separation device according to claim 4, characterized in that: The exhaust pipe (12) is provided with a blower.

6. The ceramic membrane-based rotary kiln gas-solid separation device according to claim 1, characterized in that: It also includes a control unit; a first pressure sensor (19) is provided above the ceramic membrane (3) at the bottom of the first back-blowing chamber (2061) for detecting the pressure of the ceramic membrane (3) at the bottom of the first back-blowing chamber (2061); a second pressure sensor (11) is provided above the ceramic membrane (3) at the bottom of the second back-blowing chamber (2062) for detecting the pressure of the ceramic membrane (3) at the bottom of the second back-blowing chamber (2062); the control unit is electrically connected to the first pressure sensor (19), the second pressure sensor (11), the first cylinder (5) and the second cylinder (7) respectively, obtains the pressure values ​​collected by the first pressure sensor (19) and the second pressure sensor (11), and controls the opening or closing of the first cylinder (5) and the second cylinder (7).

7. A ceramic membrane-based rotary kiln gas-solid separation device according to any one of claims 1 to 6, characterized in that: The separation box (2) is composed of a cylindrical separation part (201) and a conical funnel-shaped introduction part (202); the bottom of the introduction part (202) is connected to the discharge cover (1) of the rotary kiln; and the ceramic membrane (3) is arranged at the bottom of the separation part (201).

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