A selective CO2 capture device for industrial flue gas
By designing a selective capture device for rotating components and a reaction shell, and using solid amine adsorbents and carbon molecular sieve adsorbents to separate CO2 and nitrogen, the problem of low capture efficiency in multi-component flue gas in existing devices is solved, achieving efficient and economical CO2 capture and device stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANZHOU CITY UNIV
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-30
AI Technical Summary
Existing adsorption devices struggle to achieve efficient selective CO2 capture in industrial flue gas containing multiple components such as methane and nitrogen, and their structures are ill-suited for heat-mass transfer control under dynamic operating conditions, impacting capture efficiency and material lifespan.
A selective trapping device comprising a distribution component, a rotating component, and a reaction shell was designed. The rotating component drives the gas storage component to rotate, thereby achieving directional compression and release of the gas. Solid amine adsorbent and carbon molecular sieve adsorbent are used to trap CO2 and nitrogen respectively. Combined with heating desorption and vacuuming to regenerate the adsorbent material, the control process is simplified.
It achieves efficient and selective separation of CO2 and nitrogen in industrial flue gas, improves capture efficiency, reduces operating costs, and extends the service life and economic benefits of the equipment.
Smart Images
Figure CN224422430U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue gas treatment and gas separation technology, specifically a selective capture device for CO2 in industrial flue gas. Background Technology
[0002] With the continuous advancement of carbon reduction strategies, the efficient capture and resource utilization of CO2 in industrial flue gas has attracted much attention. Currently, methods for capturing CO2 in industrial flue gas include membrane separation, liquid amine absorption, and solid amine adsorption. Among these, solid amine adsorption has gradually become the focus of research and application due to its advantages such as low energy consumption, high renewability, and relatively simple equipment structure.
[0003] The use of amine-functionalized materials for temperature-switched CO2 adsorption is a current research hotspot in solid amine adsorption methods. Amine-functionalized materials can undergo reversible reactions with CO2 at certain temperatures, and are expected to be recycled through temperature-induced desorption, exhibiting good adsorption capacity and selectivity. However, in industrial flue gas containing multiple components such as methane and nitrogen, the matching of the adsorbent's selective recognition ability and thermal response characteristics remains a challenge. Furthermore, existing adsorption devices are mostly fixed-bed or single-tower structures, making it difficult to achieve efficient heat-mass transfer control under dynamic operating conditions, thus affecting overall capture efficiency and material lifespan.
[0004] Therefore, designing an adsorption device with a reasonable structure, temperature control and gas selective separation capabilities to improve the selective capture of CO2, avoid ineffective adsorption of methane and nitrogen, and meet the requirements of continuous and automated operation in engineering applications has become an urgent technical problem to be solved. Utility Model Content
[0005] The purpose of this invention is to provide a selective CO2 capture device in industrial flue gas to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A selective CO2 capture device for industrial flue gas includes a distribution assembly, which includes a distribution cylinder body. A rotating assembly is rotatably mounted on the inner wall of the distribution cylinder body. The rotating assembly includes a rotating bracket. A gas storage assembly is fixedly mounted on the inner wall of the rotating bracket. A top cover is fixedly mounted on the top surface of the distribution cylinder body. A driving arc block is fixedly mounted on the bottom surface of the top cover. A CO2 absorption assembly and a nitrogen absorption assembly are fixedly mounted on the outer wall of the distribution cylinder body.
[0008] Furthermore, four venting arc grooves are equidistantly opened on the outer circumference of the distribution cylinder body. An air inlet pipe and an air outlet pipe are fixedly installed at the air inlet and the right side respectively. A ball valve is slidably installed on the inner wall of the air outlet pipe, and a first spring is fixedly installed on the outer wall of the ball valve.
[0009] Furthermore, the rotating assembly includes a rotating bracket, a sealing ring is welded and fixed in the middle of the rotating bracket, the outer wall size of the sealing ring is adapted to the inner wall size of the distribution cylinder body, the rotating shaft at the center of the bottom surface of the rotating bracket passes through the bottom surface of the distribution cylinder body and is coaxially fixedly installed with a driven wheel, the bottom surface of the distribution cylinder body is rotatably connected to a driving wheel, the outer walls of the driving wheel and the driven wheel are jointly sleeved with a transmission belt, and the rotating shaft of the driving wheel is coaxially fixedly connected to a stepper motor.
[0010] Furthermore, the gas storage assembly includes a corrugated sleeve, with a fixing arc plate and a mounting plate fixedly installed on each of the two ends of the corrugated sleeve, and the fixing arc plate is fixedly installed on the inner wall of the rotating bracket.
[0011] Furthermore, an air supply pipe is installed at the center of the fixed arc plate, and a through hole is opened on the inner wall of the sealing ring. The air supply pipe is installed on the inner wall of the through hole, and a second spring is sandwiched between the inner wall of the corrugated sleeve and the fixed arc plate.
[0012] Furthermore, the CO2 absorption assembly includes a first reaction shell, which is fixedly installed on the left side of the distribution cylinder body. A first storage chamber tube is coaxially fixedly installed inside the first reaction shell. A first turbine pump is fixedly installed on the top surface of the first reaction shell, and an electric heating rod is installed on the inner wall of the first reaction shell.
[0013] Furthermore, the nitrogen absorption assembly includes a second reaction shell, which is fixedly installed on the rear side of the distribution cylinder body. A second storage chamber pipe is coaxially fixedly installed inside the second reaction shell, and a second turbine pump is fixedly installed on the top surface of the second reaction shell.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. In use, this utility model uses a rotating component to drive the gas storage component to rotate. By utilizing the periodic contact between the driving arc block and the abutting arc block, the gas inside the corrugated sleeve is compressed and released in a directional manner. This allows the gas storage component to connect with multiple ventilation arc slots in sequence, thereby realizing a cycle from intake to exhaust. The CO2 contained in the industrial flue gas is selectively absorbed by the solid amine adsorbent in the first reaction shell, and the nitrogen is selectively adsorbed by the carbon molecular sieve adsorbent in the second reaction shell, effectively achieving directional separation of gas components and improving gas purification efficiency and selective capture capability.
[0016] 2. In use, this utility model uses a stepper motor to drive the active wheel and a transmission belt to drive the driven wheel to rotate synchronously, ensuring the stable and continuous rotation of the rotating bracket and its gas storage components. By driving the arc block to periodically compress the corrugated sleeve, the automatic conversion of the gas storage, exhaust and suction processes is realized. The entire system does not rely on complex sensor control, but only realizes the multi-stage functions of adsorption, desorption and emission through mechanical structure linkage, reducing operating costs and improving system stability and automation level.
[0017] 3. In use, this utility model regenerates the adsorbent material through heating desorption and vacuum decompression. A heating rod is installed in the first reaction chamber to raise the temperature to 90°C to 120°C, causing the solid amine adsorbent to release the adsorbed CO2, which is then extracted by the first turbine pump. In the second reaction chamber, the second turbine pump reduces the chamber pressure, promptly desorbing the nitrogen adsorbed in the carbon molecular sieve adsorbent. The above operation is simple and reliable, avoiding frequent adsorbent replacements, extending the system's continuous operating time, and improving the overall service life and economic benefits of the device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is an exploded view of the overall structure of this utility model;
[0020] Figure 3 This is an exploded view of the distribution component structure of this utility model;
[0021] Figure 4 This is an exploded view of the rotating component structure of this utility model;
[0022] Figure 5 This is an exploded view of the gas storage component structure of this utility model;
[0023] Figure 6 This is an exploded view of the CO2 absorption component structure of this utility model;
[0024] Figure 7 This is an exploded view of the nitrogen absorption component structure of this utility model;
[0025] Figure 8 This is a cross-sectional view of the overall structure of this utility model;
[0026] Figure 9 for Figure 8 A magnified view of the structure at point A.
[0027] In the picture:
[0028] 1. Distribution assembly; 11. Distribution cylinder body; 111. Vent groove; 112. Support leg; 12. Inlet pipe; 13. Outlet pipe; 14. Ball valve; 15. First spring;
[0029] 2. Rotating assembly; 21. Rotating bracket; 211. Sealing ring; 212. Communicating hole; 22. Driven wheel; 23. Driving wheel; 24. Drive belt; 25. Stepper motor;
[0030] 3. Gas storage assembly; 31. Corrugated sleeve; 32. Fixed arc plate; 321. Gas supply pipe; 33. Mounting plate; 331. Abutting arc block; 34. Second spring;
[0031] 4. Top cover;
[0032] 5. Driving arc block; 51. Fixing rod;
[0033] 6. CO2 absorption assembly; 61. First reaction shell; 62. First storage chamber; 63. First turbopump; 64. Heating rod;
[0034] 7. Nitrogen absorption assembly; 71. Second reaction shell; 72. Second storage chamber; 73. Second turbopump. Detailed Implementation
[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0036] Example 1: Please refer to Figures 1-4 , Figure 8 , Figure 9 A selective CO2 capture device for industrial flue gas includes a distribution component 1, which includes a distribution cylinder body 11. A rotating component 2 is rotatably mounted on the inner wall of the distribution cylinder body 11. The rotating component 2 includes a rotating bracket 21. A gas storage component 3 is fixedly mounted on the inner wall of the rotating bracket 21. A top cover 4 is fixedly mounted on the top surface of the distribution cylinder body 11. A driving arc block 5 is fixedly mounted on the bottom surface of the top cover 4. Specifically, the driving arc block 5 is fixedly mounted to the center of the bottom surface of the top cover 4 via a fixing rod 51. The driving arc block 5 is located at the center of the distribution cylinder body 11. A CO2 absorption component 6 and a nitrogen absorption component 7 are fixedly mounted on the outer wall of the distribution cylinder body 11. Specifically, the CO2 absorption component 6 is fixedly mounted on the left side of the distribution cylinder body 11, and the nitrogen absorption component 7 is fixedly mounted on the rear side of the distribution cylinder body 11. The nitrogen absorption component 7 is adjacent to the CO2 absorption component 6.
[0037] The outer wall of the distribution cylinder body 11 has four equidistant ventilation arc grooves 111. An inlet pipe 12 and an outlet pipe 13 are fixedly installed at the front and right ventilation arc grooves 111, respectively. Specifically, the inlet pipe 12 is used to transport industrial flue gas, and the outlet pipe 13 is used to output other filtered gases. A ball valve 14 is slidably installed on the inner wall of the outlet pipe 13, and a first spring 15 is fixedly installed on the outer wall of the ball valve 14. For details, please refer to [link / reference]. Figure 8 , Figure 9 An abutment ring and a fixing ring are fixedly installed on the inner wall of the air outlet pipe 13. The outer wall of the ball valve 14 abuts against the inner wall of the abutment ring. The end of the first spring 15 away from the ball valve 14 is fixedly connected to the fixing ring. The first spring 15 releases its elastic force to tightly abut the ball valve 14 against the abutment ring. Several feet 112 are provided at equal intervals around the bottom circumference of the outer wall of the distribution cylinder body 11.
[0038] The rotating assembly 2 includes a rotating bracket 21. A sealing ring 211 is welded and fixed in the middle of the rotating bracket 21. The outer wall size of the sealing ring 211 is adapted to the inner wall size of the distributing cylinder body 11. A driven wheel 22 is coaxially fixedly installed on the rotating shaft at the center of the bottom surface of the rotating bracket 21 after passing through the bottom surface of the distributing cylinder body 11. A driving wheel 23 is rotatably connected to the bottom surface of the distributing cylinder body 11. A transmission belt 24 is sleeved on the outer wall of the driving wheel 23 and the driven wheel 22. A stepper motor 25 is coaxially fixedly connected to the rotating shaft of the driving wheel 23. Specifically, an extension arm is welded and fixed to the bottom surface of the distributing cylinder body 11. The driving wheel 23 is rotatably connected to the end of the extension arm. The stepper motor 25 is fixedly installed on the bottom surface of the extension arm by bolts. The driving wheel 23 is driven to rotate by the stepper motor 25. The driving wheel 23 drives the driven wheel 22 to rotate synchronously through the transmission belt 24. The driven wheel 22 drives the rotating bracket 21 to rotate synchronously on the inner wall of the distributing cylinder body 11.
[0039] Example 2: Please refer to Figure 2 , Figures 4-9A selective CO2 capture device for industrial flue gas differs from Embodiment 1 in that the gas storage assembly 3 includes a corrugated sleeve 31. A fixed arc plate 32 and a mounting plate 33 are fixedly installed on both ends of the corrugated sleeve 31, respectively. The fixed arc plate 32 is fixedly installed on the inner wall of the rotating bracket 21. An air supply pipe 321 is installed at the center of the fixed arc plate 32. A through-hole 212 is opened on the inner wall of the sealing ring 211. The air supply pipe 321 is installed on the inner wall of the through-hole 212. A second spring 34 is sandwiched between the inner wall of the corrugated sleeve 31 and the fixed arc plate 32. Specifically, the corrugated sleeve 31 can be sequentially connected to four ventilation arc grooves 111 through the air supply pipe 321. A retaining element is welded to the end face of the mounting plate 33 away from the corrugated sleeve 31. The outer wall of the abutting arc block 331 slides against the outer wall of the driving arc block 5. Specifically, when the rotating bracket 21 drives the gas storage component 3 to rotate, when the top of the arc of the driving arc block 5 abuts against the top of the arc of the abutting arc block 331, the corrugated sleeve 31 is compressed to its limit, the second spring 34 is compressed, and the gas inside the corrugated sleeve 31 is discharged through the air supply pipe 321. When the top of the arc of the driving arc block 5 abuts against the bottom of the arc of the abutting arc block 331, the driving arc block 5 gradually releases the pressure on the abutting arc block 331 during this process, the second spring 34 inside the corrugated sleeve 31 releases its elastic force to unfold the corrugated sleeve 31, and a negative pressure is generated inside the corrugated sleeve 31. The external gas is drawn into the corrugated sleeve 31 through the air supply pipe 321.
[0040] The CO2 absorption assembly 6 includes a first reaction shell 61, which is fixedly installed on the left side of the distribution cylinder body 11. Specifically, the ventilation arc groove 111 on the left side of the distribution cylinder body 11 is located inside the first reaction shell 61. A first storage chamber tube 62 is coaxially fixedly installed inside the first reaction shell 61. Specifically, the first storage chamber tube 62 stores solid amine adsorbent. CO2 in industrial flue gas is an acidic gas and has a strong affinity for the solid amine adsorbent. Methane and nitrogen are inert gases and will not react with the solid amine adsorbent. A reaction occurs. A first turbopump 63 is fixedly installed on the top surface of the first reaction shell 61, and an electric heating rod 64 is installed on the inner wall of the first reaction shell 61. Specifically, the temperature inside the first reaction shell 61 is controlled by the electric heating rod 64. When the temperature inside the first reaction shell 61 is 30°C to 80°C, CO2 is absorbed by the solid amine adsorbent. When the temperature inside the first reaction shell 61 is 90°C to 120°C, the CO2 inside the solid amine adsorbent is desorbed. The CO2 inside the first reaction shell 61 is extracted by the first turbopump 63.
[0041] The nitrogen absorption assembly 7 includes a second reaction shell 71, which is fixedly installed on the rear side of the distribution cylinder body 11. Specifically, the ventilation arc groove 111 on the rear side of the distribution cylinder body 11 is located inside the second reaction shell 71. A second storage chamber tube 72 is coaxially fixedly installed inside the second reaction shell 71. Specifically, the second storage chamber tube 72 stores carbon molecular sieve adsorbent. The carbon molecular sieve adsorbent is a carbon-based material with a microporous structure on its surface. The micropore size is mainly distributed between 0.3 and 0.5 nanometers. Nitrogen molecules are small and permeate quickly, so they can be adsorbed more quickly. Methane gas diffuses slowly and is repelled outside the pores. A second turbine pump 73 is fixedly installed on the top surface of the second reaction shell 71. Specifically, the nitrogen inside the second reaction shell 71 is extracted by the second turbine pump 73.
[0042] Working principle: During use, industrial flue gas is transported through the inlet pipe 12, the ventilation arc groove 111 located at the front end of the distribution cylinder body 11, and the air delivery pipe 321 to the inside of the corrugated sleeve 31 in the gas storage component 3. Driven by the stepper motor 25, the driving wheel 23 drives the driven wheel 22 to rotate through the transmission belt 24. The driven wheel 22 further drives the rotating bracket 21 and its gas storage component 3 to rotate clockwise on the inner wall of the distribution cylinder body 11.
[0043] When the gas storage component 3 rotates to the ventilation arc groove 111 located on the left side of the distribution cylinder body 11, during this process, the driving arc block 5 slides against the abutting arc block 331. When the arc top of the driving arc block 5 abuts against the arc top of the abutting arc block 331, the corrugated sleeve 31 is compressed to the limit, the second spring 34 is compressed, and the industrial flue gas inside the corrugated sleeve 31 is discharged into the first reaction shell 61 of the CO2 absorption component 6 through the gas supply pipe 321. The CO2 absorption component 6 controls the temperature inside the first reaction shell 61 through the heating rod 64, so that the temperature inside the first reaction shell 61 is 30°C to 80°C, and the CO2 in the industrial flue gas is absorbed by the solid amine adsorbent.
[0044] The rotating component 2 continues to drive the gas storage component 3 to rotate until the top of the driving arc block 5 abuts against the bottom of the abutting arc block 331. During this process, the driving arc block 5 gradually releases the pressure on the abutting arc block 331, and the second spring 34 inside the corrugated sleeve 31 releases its elastic force to unfold the corrugated sleeve 31. A negative pressure is generated inside the corrugated sleeve 31, which draws the industrial flue gas inside the first reaction shell 61 into the corrugated sleeve 31 through the gas supply pipe 321, thus realizing the cycle switching of intake and exhaust.
[0045] The rotating component 2 continues to drive the gas storage component 3 to rotate. When the gas storage component 3 rotates to the ventilation arc groove 111 located behind the distribution cylinder body 11, during this process, the driving arc block 5 slides against the abutting arc block 331. When the arc top of the driving arc block 5 abuts against the arc top of the abutting arc block 331, the corrugated sleeve 31 is compressed to the limit, the second spring 34 is compressed, and the industrial flue gas inside the corrugated sleeve 31 is discharged into the second reaction shell 71 of the nitrogen absorption component 7 through the gas supply pipe 321. The second storage chamber 72 in the nitrogen absorption component 7 stores carbon molecular sieve adsorbent. Carbon molecular sieve adsorbent is a carbon-based material with a microporous structure on its surface. Nitrogen molecules are small and perforate quickly, so they can be adsorbed more quickly. Methane gas diffuses slowly and is repelled outside the pores. Nitrogen is adsorbed by carbon molecular sieve adsorbent.
[0046] The rotating component 2 continues to drive the gas storage component 3 to rotate until the top of the driving arc block 5 abuts against the bottom of the abutting arc block 331. During this process, the driving arc block 5 gradually releases the pressure on the abutting arc block 331, and the second spring 34 inside the corrugated sleeve 31 releases its elastic force to unfold the corrugated sleeve 31. A negative pressure is generated inside the corrugated sleeve 31, which draws the industrial flue gas inside the second reaction shell 71 into the corrugated sleeve 31 through the gas supply pipe 321.
[0047] The rotating component 2 continues to drive the gas storage component 3 to rotate. When the gas storage component 3 rotates to the venting arc groove 111 located on the right side of the distribution cylinder body 11, the driving arc block 5 slides against the abutting arc block 331. When the arc apex of the driving arc block 5 abuts against the arc apex of the abutting arc block 331, the bellows sleeve 31 is compressed to its limit, the second spring 34 is compressed, and the industrial flue gas inside the bellows sleeve 31 is discharged into the outlet pipe 13 through the gas supply pipe 321. During this process, the ball valve 14 seals with the abutting ring under the elastic force of the first spring 15 to prevent gas backflow. The rotating component 2 continues to drive the gas storage component 3 to rotate, and the bellows sleeve 31 remains compressed until the gas storage component 3 rotates to the position in front of the distribution cylinder body 11. At the ventilation arc groove 111, the corrugated sleeve 31 draws industrial flue gas into the interior through the air inlet pipe 12, and this cycle repeats until the solid amine adsorbent inside the first storage chamber 62 of the CO2 absorption assembly 6 is saturated. At this time, the temperature inside the first reaction shell 61 is raised to 90°C to 120°C by the heating rod 64, and the CO2 inside the solid amine adsorbent is desorbed. The CO2 inside the first reaction shell 61 is extracted by the first turbine pump 63. When the carbon molecular sieve adsorbent stored in the second storage chamber 72 of the nitrogen absorption assembly 7 is saturated with nitrogen, the second turbine pump 73 is started to reduce the gas pressure inside the second reaction shell 71, thereby extracting the nitrogen inside the carbon molecular sieve adsorbent. At this point, the operation of the device is completed.
[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A selective CO2 capture device for industrial flue gas, comprising a distribution component (1), characterized in that: The distribution assembly (1) includes a distribution cylinder body (11), a rotating assembly (2) is rotatably mounted on the inner wall of the distribution cylinder body (11), the rotating assembly (2) includes a rotating bracket (21), a gas storage assembly (3) is fixedly mounted on the inner wall of the rotating bracket (21), a top cover (4) is fixedly mounted on the top surface of the distribution cylinder body (11), a driving arc block (5) is fixedly mounted on the bottom surface of the top cover (4), and a CO2 absorption assembly (6) and a nitrogen absorption assembly (7) are fixedly mounted on the outer wall of the distribution cylinder body (11).
2. The selective CO2 capture device in industrial flue gas according to claim 1, characterized in that: The outer wall of the distribution cylinder body (11) is provided with four venting arc grooves (111) at equal intervals. An air inlet pipe (12) and an air outlet pipe (13) are fixedly installed at the air inlet arc grooves (111) located at the front and right sides, respectively. A ball valve (14) is slidably installed on the inner wall of the air outlet pipe (13), and a first spring (15) is fixedly installed on the outer wall of the ball valve (14).
3. The selective CO2 capture device in industrial flue gas according to claim 2, characterized in that: A sealing ring (211) is welded and fixed in the middle of the rotating bracket (21). The outer wall size of the sealing ring (211) is adapted to the inner wall size of the distribution cylinder body (11). The rotating shaft at the center of the bottom surface of the rotating bracket (21) passes through the bottom surface of the distribution cylinder body (11) and is coaxially fixedly installed with a driven wheel (22). The bottom surface of the distribution cylinder body (11) is rotatably connected to a driving wheel (23). The outer walls of the driving wheel (23) and the driven wheel (22) are connected together by a transmission belt (24). The rotating shaft of the driving wheel (23) is coaxially fixedly connected to a stepper motor (25).
4. The selective CO2 capture device in industrial flue gas according to claim 3, characterized in that: The gas storage assembly (3) includes a corrugated sleeve (31), and a fixing arc plate (32) and a mounting plate (33) are fixedly installed on both ends of the corrugated sleeve (31). The fixing arc plate (32) is fixedly installed on the inner wall of the rotating bracket (21).
5. The selective CO2 capture device in industrial flue gas according to claim 4, characterized in that: An air supply pipe (321) is installed at the center of the fixed arc plate (32). A through-hole (212) is opened on the inner wall of the sealing ring (211). The air supply pipe (321) is installed on the inner wall of the through-hole (212). A second spring (34) is sandwiched between the inner wall of the corrugated sleeve (31) and the fixed arc plate (32).
6. The selective CO2 capture device in industrial flue gas according to claim 1, characterized in that: The CO2 absorption assembly (6) includes a first reaction shell (61), which is fixedly installed on the left side of the distribution cylinder body (11). A first storage chamber tube (62) is coaxially fixedly installed inside the first reaction shell (61). A first turbine pump (63) is fixedly installed on the top surface of the first reaction shell (61). A heating rod (64) is installed on the inner wall of the first reaction shell (61).
7. The selective CO2 capture device in industrial flue gas according to claim 1, characterized in that: The nitrogen absorption assembly (7) includes a second reaction shell (71), which is fixedly installed on the rear side of the distribution cylinder body (11). A second storage chamber pipe (72) is coaxially fixedly installed inside the second reaction shell (71), and a second turbine pump (73) is fixedly installed on the top surface of the second reaction shell (71).