Carbon capture absorbent escape control process and device
By setting up entrainment removal zone, agglomeration zone and demisting zone in the carbon capture device, combined with deceleration treatment at the top of the absorption section of the absorption tower, the problems of high water consumption and poor aerosol removal effect in amine escape control are solved. This achieves high-efficiency absorbent escape control with low energy consumption and low water consumption, reducing absorbent loss and secondary pollution.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG ENVIRONMENTAL PROTECTION GRP ECOLOGICAL ENVIRONMENTAL PROTECTION RES INST CO LTD
- Filing Date
- 2026-02-27
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, amine escape control methods suffer from high water consumption, limited aerosol removal efficiency, difficulty in capturing fine particles with demisters, and excessive pressure drop, failing to meet the needs of further reducing absorbent loss and secondary pollution. In particular, under complex operating conditions of high humidity and flue gas composition fluctuations, the amine escape problem has not been effectively solved.
A carbon capture absorbent escape control device is adopted, including an absorbent escape control section of an absorption tower, which is sequentially set with an entrainment removal zone, an agglomeration zone and a demisting zone. The entrainment removal zone removes large particles of absorbent, the agglomeration zone uses spray humidification and swirling disturbance to agglomerate fine particles, and the demisting zone removes particulate matter. Combined with the deceleration treatment at the top of the absorption section of the absorption tower, the absorbent escape is efficiently controlled.
It significantly reduces absorbent loss, decreases volatile organic compound emissions, achieves stable operation with low energy and water consumption, controls absorbent escape within 10 mg/m3, reduces absorbent loss by more than 20%, and reduces secondary pollution.
Smart Images
Figure CN121911208A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of carbon capture technology, and more specifically, to a process and apparatus for controlling the escape of carbon capture absorbents. Background Technology
[0002] CO2 capture, utilization, and storage (CCUS) technology is a core technological approach to addressing global warming. Among these technologies, the organic amine chemical absorption method has become the mainstream solution for post-combustion CO2 capture due to its mature process and high capture efficiency. However, amine absorbents are highly volatile, and during the CO2 capture process, they can escape in volatile and aerosol states due to exothermic reactions and gas-liquid entrainment, leading to multiple technical bottlenecks: on the one hand, amine escape results in absorbent loss, significantly increasing system operating costs; on the other hand, amine escape degradation products may generate carcinogens such as nitrosamines, polluting soil and water sources, and harming the ecological environment and human health.
[0003] Existing amine slip control methods, such as optimizing amine concentration, water washing and recovery, and traditional demisters, have significant drawbacks: water washing consumes a large amount of water and has limited effect on aerosol removal; demisters are difficult to capture fine particles and have excessive pressure drop, all of which cannot meet users' needs to further reduce absorbent loss and secondary pollution. Furthermore, under complex operating conditions such as high humidity and flue gas composition fluctuations, the control accuracy of existing technologies further decreases, and the amine slip problem has not been effectively solved.
[0004] Therefore, developing efficient, low-consumption amine escape control devices that can adapt to complex operating conditions has become a key requirement for promoting the large-scale application of amine-based CO2 capture technology. Summary of the Invention
[0005] This invention provides a carbon capture absorbent escape control process and device, which solves the technical problems in related technologies, such as high water consumption during washing, limited aerosol removal effect, difficulty in capturing fine particles by demisters and excessive pressure drop, all of which cannot meet users' needs to further reduce absorbent loss and reduce secondary pollution; and the amine escape problem has not been effectively solved under complex working conditions such as high humidity and flue gas composition fluctuations.
[0006] This invention discloses a carbon capture absorbent escape control device, comprising: An absorbent escape control section for the absorption tower is used to control the escape of the absorbent in the decarbonized flue gas of the absorption section of the absorption tower. The absorbent escape control section of the absorption tower is provided with an entrainment removal zone, an agglomeration zone, and a demisting zone in sequence along the flow direction of the decarbonized flue gas in the absorption section of the absorption tower. The entrainment removal zone is used to remove large particles of absorbent entrained in the decarbonized flue gas of the absorption section of the absorption tower. The agglomeration zone is used to humidify and swirl the decarbonized flue gas in the absorption section of the absorption tower to agglomerate fine particles. The demisting zone is used to remove particulate matter from the decarbonized flue gas in the absorption section of the absorption tower after it has been treated by the agglomeration zone. The absorber escape control section of the absorption tower is equipped with an exhaust pipe for the decarbonized flue gas from the absorption section of the absorption tower after treatment.
[0007] As a further optimization of the present invention, it also includes an upper part of the absorption section of the absorption tower, which is connected between the absorption section of the absorption tower and the absorbent escape control section of the absorption tower, and the flow cross-sectional area of the upper part of the absorption section of the absorption tower is smaller than the flow cross-sectional area of the absorbent escape control section of the absorption tower.
[0008] As a further optimization of the present invention, the entrainment removal zone includes an entrainment removal zone lifting cap liquid collector and at least one first demisting component. The liquid discharge end of the entrainment removal zone lifting cap liquid collector is connected to the carbon capture system through an entrainment removal zone liquid discharge pipe, for returning the collected absorbent to the carbon capture system for recycling. The first demisting component includes one or more of an entrainment removal zone baffle demister and an entrainment removal zone wire mesh demister.
[0009] As a further optimization of the present invention, a spray assembly and a swirling disturbance assembly are provided in the agglomeration zone; The spray assembly includes an agglomeration zone spray water supply pipe and an agglomeration zone atomizing nozzle connected to the agglomeration zone spray water supply pipe; The swirling disturbance component includes a swirling impeller demister in the agglomeration zone.
[0010] As a further optimization of the present invention, the agglomeration zone swirl impeller demister includes an agglomeration zone swirl impeller support plate and an agglomeration zone swirl impeller mounted thereon.
[0011] As a further optimization of the present invention, the demisting zone includes a demisting zone air-lifting cap liquid collector, a demisting zone liquid drain pipe, and at least two types of second demisting components, wherein the second demisting components include a demisting zone wire mesh demister and a demisting zone fiber demister.
[0012] Another aspect of the present invention discloses a carbon capture absorbent escape control process, employing the aforementioned carbon capture absorbent escape control device, comprising the following steps: S1. Allow the decarbonized flue gas from the absorption section of the carbon capture system to enter the absorbent escape control section of the absorption tower. S2. In the entrainment removal zone of the absorber escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower is subjected to entrainment removal treatment to remove large particles of absorber. S3. In the agglomeration zone of the absorbent escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower after the entrainment removal treatment is sprayed with humidification and swirling disturbance to agglomerate fine particles including aerosols. S4. In the demisting zone of the absorber escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower after agglomeration treatment is demisted to remove particulate matter. S5. The decarbonized flue gas from the absorption section of the absorption tower after demisting treatment is discharged through the decarbonized flue gas exhaust pipe of the absorption tower, wherein the escape concentration of absorbent in the decarbonized flue gas from the absorption section of the absorption tower is less than 10 mg / Nm³.
[0013] As a further optimization of the present invention, in step S1, the decarbonized flue gas in the absorption section of the absorption tower is first decelerated by flowing through the upper part of the absorption section of the absorption tower before entering the absorbent escape control section of the absorption tower.
[0014] As a further optimization of the present invention, in step S3, atomized droplets are sprayed into the decarbonized flue gas in the absorption section of the absorption tower through the atomizing nozzle in the agglomeration zone, and the decarbonized flue gas in the absorption section of the absorption tower is made to swirl through the cyclone impeller demister in the agglomeration zone.
[0015] As a further optimization of the present invention, the liquid collected in steps S2 and S4 is returned to the carbon capture system for recycling.
[0016] The beneficial effects of this invention are as follows: 1. After the decarbonized flue gas slows down in the absorption section of the absorption tower, the residence time in the absorbent escape control section increases, and the entrained absorbent condensation caused by the gas velocity increases, thus improving the removal efficiency of the demister.
[0017] 2. During agglomeration treatment, water mist humidification promotes the increase of particle size of fine particles, and swirling disturbance accelerates the particle size increase effect. The aerosol with larger particle size is more easily removed by the demister, improving the control effect of the absorbent in the form of aerosol escape.
[0018] 3. The system removes large particles of absorbent from the entrainment zone, reducing the load on subsequent treatments. The atomization method has a larger contact area with flue gas and requires less water than conventional spray washing methods. The system has a larger margin for accepting demisting drainage and the flue gas temperature is easier to control.
[0019] 4. The escape rate of the carbon capture absorbent should be controlled at 10 mg / m³. 3 Within this range, the loss of absorbent is reduced by more than 20%.
[0020] 5. This invention reduces the emission of volatile organic compounds and is environmentally friendly.
[0021] In summary, compared with the prior art, the present invention has lower energy consumption, water consumption and investment, and is a control process and device for carbon capture absorbent escape that can adapt to complex working conditions. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view schematic diagram of the agglomeration zone cyclone impeller demister of the present invention; Figure 3 This is a bottom view schematic diagram of the agglomeration zone cyclone impeller demister of the present invention; Figure 4 This is a side cross-sectional schematic diagram of the agglomeration zone swirl impeller demister of the present invention.
[0023] In the diagram: 1. Decarbonized flue gas in the absorption section of the absorption tower; 2. Upper part of the absorption section of the absorption tower; 3. Liquid collector with rising cap in the entrainment removal zone; 4. Liquid drain pipe in the entrainment removal zone; 5. Demister with baffle plate in the entrainment removal zone; 6. Wire mesh demister in the entrainment removal zone; 7. Absorbent escape control section of the absorption tower; 8. Atomizing nozzle in the agglomeration zone; 9. Spray water supply pipe in the agglomeration zone; 10. Cyclone impeller demister in the agglomeration zone; 11. Liquid collector with rising cap in the demister zone; 12. Liquid drain pipe in the demister zone; 13. Wire mesh demister in the demister zone; 14. Fiber demister in the demister zone; 15. Exhaust pipe of decarbonized flue gas from the absorption tower; 16. Cyclone impeller in the agglomeration zone; 17. Cyclone impeller support plate in the agglomeration zone; 18. Radial water pipe inside the agglomeration zone. Detailed Implementation
[0024] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.
[0025] Example 1: According to the appendix Figure 1 As shown, a carbon capture absorbent escape control device includes: Absorbent escape control section 7 of the absorption tower is used to control the escape of absorbent in the decarbonized flue gas 1 of the absorption section of the absorption tower. The absorbent escape control section 7 of the absorption tower is provided with an entrainment removal zone, an agglomeration zone and a demisting zone in sequence along the flow direction of the decarbonized flue gas 1 in the absorption section of the absorption tower; The decarbonized flue gas 1 in the absorption section of the absorption tower enters the absorber escape control section 7 after passing through the upper part 2 of the absorption section of the absorption tower and being decelerated by a variable diameter. The absorber escape control section 7 of the absorption tower consists of an entrainment zone, an agglomeration zone, and a demisting zone from bottom to top. After being treated in the three zones, the decarbonized flue gas 1 in the absorption section of the absorption tower is discharged through the decarbonized flue gas exhaust pipe 15 of the absorption tower. Among them, except for the entrainment zone, which has the function of removing large particulate absorbent entrained in the decarbonized flue gas 1 of the absorption section of the absorption tower, the amount of absorbent escape is controlled at 50mg / Nm³~100mg / Nm³. The agglomeration zone has the functions of spraying water mist to humidify and swirling to turbulence, promoting the agglomeration of fine particles, including aerosols, into large particles. The demisting zone has the function of removing fine particles, controlling the amount of absorbent escape to within 10 mg / Nm³.
[0026] It should be noted that the temperature of the decarbonized flue gas 1 in the absorption section of the absorption tower is 40℃~60℃ and the absorbent escape concentration is >100mg / Nm³. It enters the absorbent escape control section 7 of the absorption tower through the upper part 2 of the absorption section. The diameter of the upper part 2 of the absorption section is 0.7 to 0.95 times the diameter of the absorbent escape control section 7.
[0027] It should be noted that the carbon capture absorbent escape control device also includes the upper part 2 of the absorption section of the absorption tower. The upper part 2 of the absorption section of the absorption tower is connected between the absorption section of the absorption tower and the absorbent escape control section 7 of the absorption tower, and the flow cross-sectional area of the upper part 2 of the absorption section of the absorption tower is smaller than the flow cross-sectional area of the absorbent escape control section 7 of the absorption tower.
[0028] The entrainment removal zone includes an entrainment removal zone riser cap liquid collector 3 and at least one first demister assembly. The discharge end of the entrainment removal zone riser cap liquid collector 3 is connected to the carbon capture system through an entrainment removal zone discharge pipe 4, which is used to return the collected absorbent to the carbon capture system for recycling. After treatment in the entrainment removal zone, the absorbent escape concentration of the decarbonized flue gas 1 in the absorption section of the absorption tower is reduced to 50 mg / Nm³~100 mg / Nm³, and the temperature is maintained at 40℃~60℃.
[0029] The first demisting component includes one or more of the de-entrainment baffle demister 5 and the de-entrainment wire mesh demister 6. The effective height ratio of the de-entrainment baffle demister 5 to the de-entrainment wire mesh demister 6 is controlled between 1:18 and 3:7, and both are conventional types.
[0030] Specifically, except that the entrainment zone riser cap liquid collector 3 is of the conventional form, the separated absorbent is transported to the carbon capture system for recycling through the entrainment zone drain pipe 4; the collected undiluted escape absorbent is directly discharged into the carbon capture system, reducing the loss of system water and absorbent, which is beneficial to the system water balance.
[0031] According to the appendix Figure 1 To be continued Figure 4 As shown, a spray assembly and a swirling disturbance assembly are installed within the aggregation zone; In one embodiment, the spray assembly includes an agglomeration zone spray water supply pipe 9 and an agglomeration zone atomizing nozzle 8 connected to the agglomeration zone spray water supply pipe 9; The atomization pressure of the atomizing nozzle 8 in the agglomeration area is controlled between 0.1 MPa and 0.5 MPa, and the atomization shape is a conventional style; The atomizing nozzles 8 in the agglomeration zone are evenly arranged on the radial water pipes 18 inside the agglomeration zone, and the included angle between adjacent radial water pipes 18 inside the agglomeration zone is 30°. The water supply pipe 9 for the agglomeration area sprays is connected to the central inlet pipe of the atomizing nozzle distributor; In another embodiment, the swirling disturbance component includes a swirl impeller demister 10 in the agglomeration zone. The swirl impeller demister 10 includes a swirl impeller support plate 17 in the agglomeration zone and a swirl impeller 16 mounted thereon. The swirl impeller 16 in the agglomeration zone is rotatably disposed on the swirl impeller support plate 17 in the agglomeration zone.
[0032] The cyclone impeller demister 10 in the agglomeration zone is arranged directly above the radial water pipe 18 inside the agglomeration zone. The decarbonized flue gas 1 in the absorption section of the absorption tower can only enter the upper space of the agglomeration zone through the cyclone impeller 16 in the agglomeration zone. The cyclone impeller 16 in the agglomeration zone is a conventional rotatable impeller and is evenly distributed on the cyclone impeller support plate 17 in the agglomeration zone.
[0033] It should be noted that the residence time of the decarbonized flue gas 1 in the agglomeration zone of the absorption section of the absorption tower is 0.5s to 2s. After the agglomeration zone is treated, the temperature of the decarbonized flue gas 1 in the absorption section of the absorption tower is <40℃, and the fine particles, including aerosols, agglomerate into large particles.
[0034] The demisting zone includes a demisting zone riser cap liquid collector 11, a demisting zone drain pipe 12, and at least two types of demisting components. The demisting zone riser cap liquid collector 11 is connected to the carbon capture system through the demisting zone drain pipe 12, and is used to return the collected liquid to the carbon capture system for recycling.
[0035] Specifically, the liquid collector 11 of the demisting zone riser cap collects the liquid generated by demisting and discharges it into the carbon capture system for recycling through the demisting zone drain pipe 12; the absorbent escape concentration in the decarbonized flue gas 1 of the absorption section of the absorption tower after treatment in the demisting zone is reduced to less than 10 mg / Nm³ and discharged through the decarbonized flue gas exhaust pipe 15 of the absorption tower.
[0036] The second demisting component includes a wire mesh demister 13 and a fiber demister 14 in the demisting zone. The effective height ratio of the wire mesh demister 13 to the fiber demister 14 in the demisting zone is controlled at 1:1 to 2:1, which are both conventional types.
[0037] Example 2: According to the appendix Figure 1 To be continued Figure 4 As shown, a carbon capture and absorbent escape control process, employing the aforementioned carbon capture and absorbent escape control device, includes the following steps: S1. The decarbonized flue gas 1 from the absorption section of the carbon capture system enters the absorber escape control section 7 of the absorption tower. In step S1, the decarbonized flue gas 1 from the absorption section of the absorption tower first flows through the upper part 2 of the absorption section of the absorption tower to slow down, and then enters the absorber escape control section 7 of the absorption tower. S2. In the entrainment removal zone of the absorber escape control section 7 of the absorber tower, the decarbonized flue gas 1 of the absorber tower absorption section is subjected to entrainment removal treatment to remove large particulate absorber. S3. In the agglomeration zone of the absorbent escape control section 7 of the absorber tower, the decarbonized flue gas 1 of the absorber tower absorption section after the entrainment removal treatment is sprayed with humidification and swirling disturbance to agglomerate fine particles including aerosols. In step S3, atomized droplets are sprayed into the decarbonized flue gas 1 of the absorber tower absorption section through the atomizing nozzle 8 in the agglomeration zone, and the decarbonized flue gas 1 of the absorber tower absorption section is swirled by the swirling impeller demister 10 in the agglomeration zone. S4. In the demisting zone of the absorber escape control section 7 of the absorber tower, the decarbonized flue gas 1 of the absorber tower after agglomeration treatment is demisted to remove particulate matter; the liquid collected in steps S2 and S4 is returned to the carbon capture system for recycling. S5. The decarbonized flue gas 1 of the absorption section of the absorption tower after demisting treatment is discharged through the decarbonized flue gas exhaust pipe 15 of the absorption tower, wherein the escape concentration of absorbent in the decarbonized flue gas 1 of the absorption section of the absorption tower is less than 10 mg / Nm³.
[0038] Example 3: According to the appendix Figure 1 To be continued Figure 4 As shown, in a specific application scenario, the decarbonized flue gas 1 from the absorption section of the absorption tower, with a temperature of 46.5℃ and an absorbent escape concentration of approximately 215 mg / Nm³, is introduced into this device. The flue gas first passes through the upper part 2 of the absorption section of the absorption tower, whose diameter is 0.9 times the diameter of the absorbent escape control section 7 of the upper absorption tower. After deceleration, it enters the absorbent escape control section 7 of the absorption tower.
[0039] In the entrainment removal zone, the flue gas passes sequentially through the entrainment removal zone riser cap liquid collector 3, the entrainment removal zone baffle plate demister 5, and the entrainment removal zone wire mesh demister 6, reducing the escape concentration to approximately 87 mg / Nm³. The collected concentrated amine solution is returned to the regeneration system through the entrainment removal zone drain pipe 4.
[0040] In the agglomeration zone, sprayed water at a pressure of 0.32 MPa is atomized and injected through the atomizing nozzle 8, mixing thoroughly with the flue gas and cooling it to approximately 40°C. The flue gas then passes through the swirl impeller 16 in the agglomeration zone, where it undergoes intense swirling turbulence within a residence time of approximately 1.5 seconds, resulting in the effective agglomeration and growth of fine particles.
[0041] In the demisting zone, the flue gas passes successively through the wire mesh demister 13 and the fiber demister 14, with a height ratio of 1:1. The final absorbent escape concentration in the exhaust gas is reduced to 8 mg / Nm³, and the gas is discharged through the decarbonized flue gas exhaust pipe 15 of the absorption tower. All collected liquid is returned to the system for recycling.
[0042] The carbon capture absorbent escape control process and apparatus of the present invention recovers escaped absorbent while reducing water spray volume, investment, and absorbent loss costs, effectively solving the aerosol emission problem, greatly reducing secondary pollution, and is environmentally friendly. Furthermore, this process and apparatus achieve stable operation with low water and energy consumption while significantly reducing absorbent loss and secondary pollution.
[0043] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.
Claims
1. A carbon capture absorbent escape control device, characterized in that, include: An absorbent escape control section for the absorption tower is used to control the escape of the absorbent in the decarbonized flue gas of the absorption section of the absorption tower. The absorbent escape control section of the absorption tower is provided with an entrainment removal zone, an agglomeration zone, and a demisting zone in sequence along the flow direction of the decarbonized flue gas in the absorption section of the absorption tower. The entrainment removal zone is used to remove large particles of absorbent entrained in the decarbonized flue gas of the absorption section of the absorption tower. The agglomeration zone is used to humidify and swirl the decarbonized flue gas in the absorption section of the absorption tower to agglomerate fine particles. The demisting zone is used to remove particulate matter from the decarbonized flue gas in the absorption section of the absorption tower after it has been treated by the agglomeration zone.
2. The carbon capture absorbent escape control device according to claim 1, characterized in that, It also includes the upper part of the absorption section of the absorption tower, which is connected between the absorption section of the absorption tower and the absorbent escape control section of the absorption tower, and the flow cross-sectional area of the upper part of the absorption section of the absorption tower is smaller than the flow cross-sectional area of the absorbent escape control section of the absorption tower.
3. A carbon capture absorbent escape control device according to claim 1 or 2, characterized in that, The entrainment removal zone includes an entrainment removal zone air-lift cap liquid collector and at least one first demisting component; the first demisting component includes one or more of an entrainment removal zone baffle demister and an entrainment removal zone wire mesh demister.
4. A carbon capture absorbent escape control device according to claim 1 or 2, characterized in that, The agglomeration zone is equipped with a spray assembly and a swirl disturbance assembly; the spray assembly includes a water supply pipe for the agglomeration zone spray and an atomizing nozzle for the agglomeration zone connected to the water supply pipe for the agglomeration zone spray; the swirl disturbance assembly includes a swirl impeller demister for the agglomeration zone swirl.
5. The carbon capture absorbent escape control device according to claim 4, characterized in that, The agglomeration zone swirl impeller demister includes an agglomeration zone swirl impeller support plate and an agglomeration zone swirl impeller mounted thereon.
6. A carbon capture absorbent escape control device according to claim 1 or 2, characterized in that, The demisting zone includes a demisting zone air-lift cap liquid collector, a demisting zone liquid drain pipe, and at least two types of second demisting components; the second demisting components include a demisting zone wire mesh demister and a demisting zone fiber demister.
7. A carbon capture absorbent escape control process, characterized in that, The carbon capture absorber escape control device according to any one of claims 1 to 6 includes the following steps: S1. Allow the decarbonized flue gas from the absorption section of the carbon capture system to enter the absorbent escape control section of the absorption tower. S2. In the entrainment removal zone of the absorber escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower is subjected to entrainment removal treatment to remove large particles of absorber. S3. In the agglomeration zone of the absorbent escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower after the entrainment removal treatment is sprayed with humidification and swirling disturbance to agglomerate fine particles including aerosols. S4. In the demisting zone of the absorber escape control section of the absorption tower, the decarbonized flue gas of the absorption section of the absorption tower after agglomeration treatment is demisted to remove particulate matter. S5. The decarbonized flue gas from the absorption section of the absorption tower after demisting treatment is discharged externally; wherein the escape concentration of absorbent in the decarbonized flue gas from the absorption section of the absorption tower is less than 10 mg / Nm³.
8. The carbon capture absorbent escape control process according to claim 7, characterized in that, In step S1, the decarbonized flue gas in the absorption section of the absorption tower is first decelerated by flowing through the upper part of the absorption section of the absorption tower before entering the absorbent escape control section of the absorption tower.
9. A carbon capture absorbent escape control process according to claim 7 or 8, characterized in that, In step S3, atomized droplets are injected into the decarbonized flue gas in the absorption section of the absorption tower through the atomizing nozzle in the agglomeration zone, and the decarbonized flue gas in the absorption section of the absorption tower is swirled by the cyclone impeller demister in the agglomeration zone.
10. A carbon capture absorbent escape control process according to claim 7 or 8, characterized in that, The liquid collected in steps S2 and S4 is returned to the carbon capture system for recycling.