An amine aerosol control system and method based on phase change condensation technology

Abstract

The application provides an amine aerosol control system and method based on a phase change condensation technology, which comprises a particle growth tower, wherein the particle growth tower is provided with a wet air inlet, a decarbonized flue gas inlet, an amine liquid outlet, an exhaust outlet and a control unit; the wet air inlet is connected with a wet air automatic supply unit, the wet air automatic supply unit comprises a wet air preparation tower, and the wet air preparation tower is provided with an air input unit and a circulating water unit; a wet air monitoring unit is arranged between the wet air inlet and the wet air automatic supply unit; the decarbonized flue gas inlet is provided with a flue gas monitoring unit; the control unit is used for controlling the flow of the air input unit and the circulating water unit; the exhaust outlet is provided with a demisting unit, so that the gas discharged from the exhaust outlet is discharged after passing through the demisting unit. Through effective control of the amine aerosol, the application improves the purification efficiency of the decarbonized flue gas, reduces environmental pollution, and realizes comprehensive control of the amine aerosol escape to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of amine removal control technology in the form of aerosols, specifically relating to an amine aerosol control system and method based on phase change condensation technology. Background Technology

[0002] Currently, with the development of the global economy and the continuous improvement of industrialization, the consumption of fossil energy has grown rapidly, leading to large-scale emissions of greenhouse gases, primarily carbon dioxide, which in turn causes global warming. Among greenhouse gases, CO2 has the greatest impact, accounting for about 60% of all greenhouse gas contributions. CO2 capture, utilization, and storage (CCUS) technology, as the mainstream technology route, is the most effective and economically feasible way to achieve CO2 emission reduction. Among these technologies, post-combustion capture does not require modification of existing thermal power plants and is currently a research hotspot. Chemical absorption is the most mature and has the greatest application potential among post-combustion capture technologies.

[0003] Currently, in actual operation, due to the exothermic reaction between the lean absorbent solution and CO2 in the flue gas in the absorption tower, some absorbent escapes into the atmosphere in the form of volatilization or aerosols with the decarbonized flue gas. The absorbent undergoes oxidative or thermal degradation, leading to the formation of carcinogens such as nitrosamines and nitrosamines, which damage soil organisms and pollute drinking water sources. Furthermore, the high market price of absorbents causes a sharp increase in the operating cost of carbon capture systems due to absorbent escape. Therefore, it is essential to control amine escape from carbon capture systems to reduce emissions. However, while traditional control methods can effectively reduce the volatilization emissions of amine escape from carbon capture systems to some extent, they currently cannot establish an effective removal environment for escaped amines in the form of aerosols, which are prone to significant emissions. The limited degree of automation control results in poor emission control performance. Summary of the Invention

[0004] This invention provides an amine aerosol control system and method based on phase change condensation technology, aiming to solve the problem that the current system cannot establish an effective removal environment for escaped amines in the form of aerosols that cause serious emissions, and the degree of automation control is limited, resulting in poor emission control.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An amine aerosol control system based on phase change condensation technology includes a particle growth tower, which is equipped with a humid air inlet, a decarbonized flue gas inlet, an amine liquid outlet, an exhaust port, and a control unit; wherein:

[0007] The humid air inlet is connected to an automatic humid air supply unit, which is used to input humid air into the particle growth tower through the humid air inlet; the automatic humid air supply unit includes a humid air preparation tower, which is equipped with an air input unit and a circulating water unit.

[0008] A humid air monitoring unit is configured between the humid air inlet and the humid air automatic supply unit; the decarbonized flue gas inlet is used to input decarbonized flue gas and is equipped with a flue gas monitoring unit; the control unit is used to control the flow rate of the air input unit and the circulating water unit based on the monitoring data of the humid air monitoring unit and the flue gas monitoring unit.

[0009] The exhaust port is equipped with a demisting unit so that the gas discharged from the exhaust port can pass through the demisting unit before being discharged.

[0010] In some embodiments, the air input unit includes an air compressor that is conductively connected to a humid air preparation tower, and a gas mass flow controller is disposed between the humid air preparation tower and the air compressor.

[0011] In some embodiments, a circulating water unit forms passages at the bottom and near the top of the humid air preparation tower. The circulating water unit includes a constant temperature water bath and is equipped with a magnetic circulation pump, a rotor flow meter, and valves on the external passages of the humid air preparation tower.

[0012] In some embodiments, the flue gas monitoring unit includes a decarbonized flue gas temperature and humidity transmitter and a decarbonized flue gas sampling chamber, which are located outside the particle growth tower at the decarbonized flue gas inlet.

[0013] In some embodiments, the humid air monitoring unit includes a humid air temperature and humidity transmitter and a humid air sampling chamber, which are located on the passageway connecting the decarbonized flue gas inlet to the humid air preparation tower.

[0014] In some embodiments, the humid air preparation tower has packing material located between the passageways of the circulating water unit.

[0015] In some embodiments, the temperature of the humid air prepared by the automatic humid air supply unit is not greater than 20°C and the relative humidity is not less than 90%.

[0016] In some embodiments, the demisting unit includes a demister, which is equipped with a demisting screen and a pressure measuring element.

[0017] Furthermore, the demisting unit is detachably installed in the particle growth tower.

[0018] This invention also provides a method for controlling amine aerosols based on phase change condensation technology, comprising the following steps:

[0019] S1. Turn on the automatic humid air supply unit and connect the decarbonized flue gas inlet to the decarbonized flue gas input device;

[0020] S2. The control unit is based on PID control and controls the flow rate of the air input unit and the circulating water unit according to the monitoring data of the humid air monitoring unit and the flue gas monitoring unit.

[0021] S3. The humid air generated by the automatic humid air supply unit and the decarbonized flue gas are mixed after entering the particle growth tower. The aerosol particles are removed after entering the demister unit along with the decarbonized flue gas. The amine liquid is discharged through the amine liquid outlet. The decarbonized flue gas after the aerosol particles are removed is discharged through the demister unit.

[0022] Compared with the prior art, the amine aerosol control system and method based on phase change condensation technology of the present invention have the following beneficial effects:

[0023] This invention discloses an amine aerosol control system based on phase change condensation technology. The amine aerosol control system includes a particle growth tower, which is equipped with a humid air inlet, a decarbonized flue gas inlet, an amine liquid outlet, an exhaust port, and a control unit. The humid air inlet is connected to an automatic humid air supply unit, which supplies humid air to the particle growth tower. The automatic humid air supply unit includes a humid air preparation tower, which is equipped with an air input unit and a circulating water unit. A humid air monitoring unit is configured between the humid air inlet and the automatic humid air supply unit. The decarbonized flue gas inlet is used to input decarbonized flue gas and is equipped with a flue gas monitoring unit. The control unit controls the flow rates of the air input unit and the circulating water unit based on the monitoring data from the humid air monitoring unit and the flue gas monitoring unit. The exhaust port is equipped with a demisting unit so that the gas discharged from the exhaust port passes through the demisting unit before being discharged. Based on the above, the amine aerosol control system of the present invention achieves effective control of amine aerosols through the combined and coordinated control of a particle growth tower, an automatic humid air supply unit, a monitoring unit, and a control unit. Effective control ensures proper mixing of humid air and decarbonized flue gas, thereby promoting the growth of aerosol particles. These particles are then removed by a demisting unit, improving the purification efficiency of the decarbonized flue gas and reducing environmental pollution. This invention improves the amine escape problem in carbon capture systems, particularly the emission in aerosol form. By introducing a particle growth tower, a humid air supply unit, and a demisting unit, this invention achieves efficient control of amine aerosol escape. Based on the water vapor phase change condensation method, this invention establishes a supersaturated water vapor environment, causing water vapor to condense on the surface of particles, thereby increasing the particle size. The system structure of this invention is simple in design and has good cost control. By automatically controlling and adjusting the temperature and humidity of the humid air to establish a relatively reasonable supersaturated water vapor environment, combined with the removal function of the demisting unit, comprehensive control of amine aerosol escape is achieved, demonstrating significant practical value. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0025] Figure 1 This is a schematic diagram of the overall system structure in the amine aerosol control system and method based on phase change condensation technology of the present invention;

[0026] Figure 2 This is a schematic diagram of the process framework of an amine aerosol control system and method based on phase change condensation technology according to the present invention.

[0027] Figure 3 This is a schematic diagram of the humid air flow rate in an embodiment of an amine aerosol control system and method based on phase change condensation technology according to the present invention.

[0028] Figure 4 This is a schematic diagram of the relative humidity of humid air in an embodiment of an amine aerosol control system and method based on phase change condensation technology according to the present invention.

[0029] Figure 5 This is a schematic diagram of the humid air temperature in an embodiment of an amine aerosol control system and method based on phase change condensation technology according to the present invention.

[0030] 1. Particle growth tower; 2. Humid air inlet; 3. Decarbonized flue gas inlet; 4. Gas outlet; 5. Amine liquid recovery outlet; 6. Thermal insulation layer; 7. Decarbonized flue gas temperature and humidity transmitter; 8. Decarbonized flue gas sampling chamber; 9. Humid air temperature and humidity transmitter; 10. Humid air sampling chamber; 11. Demister; 12. Demisting net; 13. Pressure measuring point at the front end of the demisting net; 14. Pressure measuring point at the rear end of the demisting net; 15. Humid air preparation tower; 16. Packing material; 17. Air compressor; 18. Gas mass flow controller; 19. Constant temperature water bath; 20. Magnetic circulation pump; 21. Rotor flow meter; 22. Valve. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0037] How to improve the removal efficiency of escaped amines in the form of aerosols that cause serious emissions, and how to improve the control effect and automation of emissions, thereby improving the removal accuracy and efficiency of emissions.

[0038] This invention provides an amine aerosol control system based on phase change condensation technology. The amine aerosol control system includes a particle growth tower 1, which is equipped with a humid air inlet 2, a decarbonized flue gas inlet 3, an amine liquid outlet, an exhaust port, and a control unit; wherein:

[0039] The humid air inlet 2 is connected to an automatic humid air supply unit, which is used to input humid air into the particle growth tower 1 through the humid air inlet 2; the automatic humid air supply unit includes a humid air preparation tower 15, which is equipped with an air input unit and a circulating water unit.

[0040] A humid air monitoring unit is configured between the humid air inlet 2 and the humid air automatic supply unit; the decarbonized flue gas inlet 3 is used to input decarbonized flue gas and is equipped with a flue gas monitoring unit; the control unit is used to control the flow rate of the air input unit and the circulating water unit based on the monitoring data of the humid air monitoring unit and the flue gas monitoring unit.

[0041] The exhaust port is equipped with a demisting unit so that the gas discharged from the exhaust port can pass through the demisting unit before being discharged.

[0042] This invention discloses an amine aerosol control system based on phase change condensation technology. Utilizing a water vapor phase change condensation method, it establishes a supersaturated water vapor environment, promoting water vapor condensation on the surface of particulate matter. Through the settings of the system's control and monitoring units, the temperature and humidity of the humid air can be automatically adjusted according to the temperature and humidity of the decarbonized flue gas to establish an optimal supersaturated water vapor environment. By combining the phase change condensation process of humid air and decarbonized flue gas in the particle growth tower, this invention effectively controls the generation and diffusion of amine aerosols within the system, reducing environmental pollution while optimizing the decarbonization process. Real-time monitoring and adjustment by the control unit ensure the stability and efficiency of the system operation. Furthermore, this invention, in conjunction with the demisting unit's removal function, collaboratively achieves control over amine aerosol escape, reducing emissions of amines, especially in aerosol form, from the carbon capture system, while also reducing absorbent loss.

[0043] like Figure 1 As shown, in an amine aerosol control system based on phase change condensation technology according to the present invention, the flue gas monitoring unit includes a decarbonized flue gas temperature and humidity transmitter 7 and a decarbonized flue gas sampling chamber 8. The transmitter 7 and sampling chamber 8 are located outside the particle growth tower 1, at the decarbonized flue gas inlet 3. This invention, through the installation of the decarbonized flue gas temperature and humidity transmitter and sampling chamber, monitors and provides feedback on the status of the decarbonized flue gas in real time, providing accurate data support for the control unit, facilitating timely adjustment of system parameters, ensuring effective decarbonization, and improving operational accuracy.

[0044] In an amine aerosol control system based on phase change condensation technology according to the present invention, the humid air monitoring unit includes a humid air temperature and humidity transmitter 9 and a humid air sampling chamber 10. The humid air temperature and humidity transmitter 9 and the humid air sampling chamber 10 are located on the passage connecting the decarbonized flue gas inlet 3 to the humid air preparation tower 15. As a specific control parameter, the temperature of the humid air prepared by the humid air supply unit is not greater than 20°C, and the relative humidity is not less than 90%. The present invention designs a humid air monitoring unit on this passage, thereby ensuring real-time monitoring of the quality of the input humid air, which helps to adjust the parameters in the humid air preparation process and improve the quality and stability of the humid air. The strict requirements of the present invention on the temperature and humidity of the humid air ensure that the humid air has optimal phase change condensation conditions when entering the particle growth tower 1, thereby improving the control effect of amine aerosol.

[0045] As one embodiment, in the amine aerosol control system based on phase change condensation technology of the present invention, the particle growth tower 1 is provided with a thermal insulation layer 6, which is made of thermal insulation material. The particle growth tower 1 is made of acrylic material. Furthermore, the particle growth tower 1 of the present invention is provided with packing material 16 to form a packing layer, which is composed of spherical packing material of polypropylene. Optionally, the particle size of the spherical packing can be selected as 1-3 mm, and the height of the packing can be selected as 2 m. These can be flexibly adjusted according to actual needs, and the control accuracy of humidified air and the preparation efficiency can be improved by controlling the airflow and water circulation volume.

[0046] like Figure 1 As shown, in an amine aerosol control system based on phase change condensation technology of the present invention, the automatic humid air supply unit includes a humid air preparation tower 15, an air compressor 17, a gas mass flow controller 18, a constant temperature water bath 19, a magnetic circulation pump 20, and a rotor flow meter 21. In one embodiment, the gas mass flow controller 18 controls the air flow rate introduced into the humid air preparation tower 15 by the air compressor 17 to be 10-30 L / min. The constant temperature water bath 19 controls the temperature of the humid air inside the air preparation tower 15 to be 10-20℃. The air compressor 17 ensures a stable air supply, while the gas mass flow controller 18 precisely controls the air flow rate entering the humid air preparation tower 15, improving the accuracy and efficiency of humid air preparation. Furthermore, by combining the circulating water unit with the configuration of the constant temperature water bath 19, the magnetic circulation pump 20, the rotor flow meter 21, and the valve 22, precise temperature control and stable humidity maintenance within the humid air preparation tower 15 are achieved, contributing to the formation of the required high-quality humid air.

[0047] Preferably, the particle growth tower 1 of the present invention is provided with guide plates (not shown in the figure). The guide plates can be made of stainless steel, and the spacing between the guide plates can be 0.1-0.5m. By designing the guide plates, the efficiency of mixing and removal is improved.

[0048] In the amine aerosol control system based on phase change condensation technology of the present invention, a demisting unit is set at the gas outlet 4. The demisting unit includes a demister 11, a demisting net 12 is arranged inside the demister 11, and a pressure measuring element is arranged in the demister 11. The demisting unit is detachably installed in the particle growth tower 1. In the demister 11, the present invention sets a pressure measuring point 13 at the front end of the demisting net and a pressure measuring point 14 at the rear end of the demisting net. The pressure measuring point 13 at the front end of the demisting net and the pressure measuring point 14 at the rear end of the demisting net are used to monitor the pressure drop of the demisting net in real time, so as to effectively remove aerosol particles in the decarbonization flue gas, protect downstream equipment from pollution, and at the same time, the setting of the pressure measuring element facilitates the monitoring of the operating status of the demisting unit.

[0049] In some embodiments, the demister mesh 12 can be made of 304 stainless steel, a DP high-efficiency filter, and uses round wire. The thickness of the demister mesh 12 can be selected from three specifications: 50mm, 100mm, and 150mm. The diameter of the demister mesh 12 can be selected from two specifications: 50mm and 60mm. Furthermore, the demister 12 housing and the particle growth tower 1 of the present invention are connected by a detachable design, such as a snap-fit ​​connection. The detachable design facilitates maintenance and replacement of components within the demister unit, improving the maintainability and flexibility of the system.

[0050] Based on the above-mentioned amine aerosol control system based on phase change condensation technology, the present invention also provides an amine aerosol control method based on phase change condensation technology, comprising the following steps:

[0051] S1. Turn on the automatic humid air supply unit and connect the decarbonized flue gas inlet 3 to the decarbonized flue gas input device;

[0052] S2. The control unit is based on PID control and controls the flow rate of the air input unit and the circulating water unit according to the monitoring data of the humid air monitoring unit and the flue gas monitoring unit.

[0053] S3. The humid air generated by the automatic humid air supply unit and the decarbonized flue gas enter the particle growth tower 1 and mix. The aerosol particles are removed after entering the demisting unit along with the decarbonized flue gas. The amine liquid is discharged through the amine liquid outlet. The decarbonized flue gas after the aerosol particles are removed is discharged through the demisting unit.

[0054] This invention achieves precise control of amine aerosol control system parameters by using PID control combined with real-time monitoring data of humid air and decarbonized flue gas. This ensures stable and efficient system operation, effectively reduces amine aerosol emissions, improves the effectiveness of the decarbonization process, and enhances environmental friendliness.

[0055] like Figure 2 As shown, a method for controlling amine aerosols based on phase change condensation technology is specifically as follows:

[0056] 1. Air is introduced through an air compressor 17. The introduced air flow rate is adjusted by a gas mass flow controller 18.

[0057] 2. Circulating water is sent into the humid air preparation tower by magnetic circulation pump 20. The flow rate of circulating water is regulated by valve 22.

[0058] 3. The constant temperature water bath 19 controls the temperature of the circulating water and the temperature of the humid air in the air preparation tower 15.

[0059] 4. In the humid air preparation tower 15, the air compressor 17 introduces air from bottom to top, and the circulating water flows from top to bottom, with the two flowing in opposite directions.

[0060] 5. The humid air generated by the humid air supply unit enters the particle growth tower 1 through the humid air inlet 2.

[0061] 6. The decarbonized flue gas enters the particle growth tower 1 through the decarbonized flue gas inlet 3.

[0062] 7. The humid air generated by the humid air supply unit is mixed with the decarbonized flue gas in the particle growth tower 1, which increases the size of the aerosol particles. The aerosol particles enter the demisting unit with the decarbonized flue gas and are effectively removed.

[0063] 8. The effectively removed amine solution is periodically discharged and recycled through amine solution recovery outlet 5.

[0064] 9. The decarbonized flue gas after aerosol recovery is discharged after passing through the demister unit.

[0065] Furthermore, this invention employs PID control to prepare humid air. 1. It collects the temperature and humidity of the decarbonized flue gas, as well as the actual temperature and humidity of the humid air; 2. It calculates the error: the difference between the target value and the actual value; 3. It calls the PID_Control function to calculate the control quantity.

[0066] The PID_Control function includes: 1) Calculating the proportional term: the product of the error signal and the proportional coefficient; 2) Calculating the integral term: the quotient of the integral of the error signal and the integral time; 3) Calculating the derivative term: the quotient of the rate of change of the error signal and the derivative time; 4) Calculating the control quantity: the sum of the proportional term, the integral term, and the derivative term.

[0067] 4. Adjust the heating or cooling power of the humid air preparation tower according to the control parameters; 5. Update the error, integral value, and derivative value;

[0068] Repeat steps 1-5 above for cyclical control.

[0069] Furthermore, the PID_Control function further includes integral saturation suppression and derivative filtering to improve control performance. Adaptive PID control is employed, dynamically adjusting the PID parameters based on the system state to enhance control effectiveness.

[0070] The following detailed description of an amine aerosol control system and method based on phase change condensation technology according to the present invention will be provided through specific embodiments.

[0071] The particle growth tower 1 of this invention is equipped with thermal insulation material made of acrylic. A 2m thick layer of polypropylene spherical packing with a particle size of 1-3mm is installed inside the tower. Stainless steel guide plates are installed inside the tower with a spacing of 0.1-0.5m. The demister screen 12 is made of 304 stainless steel, a DP high-efficiency filter screen, and uses round wire. The thickness of the demister screen 12 can be 100mm. The diameter of the demister screen 12 is 60mm. The outer shell of the demister 12 is connected to the particle growth tower 1 by a snap-fit ​​connection. The humid air preparation tower 15 is equipped with packing 16. The packing 16 is a ring-shaped bulk packing.

[0072] like Figures 3-5 As shown, the automatic humidified air supply unit calls the PID_Control function to calculate the control quantity. The gas mass flow controller 18 controls the air compressor 17 to introduce air into the humidified air preparation tower 15 in a flow range of 0-1.8 Nm³. 3 / h. The constant temperature water bath 19 controls the temperature of the humid air inside the air preparation tower 15. The humid air temperature T ≤ 20℃ and the relative humidity RH ≥ 90% prepared by the humid air supply unit are humid air temperature T ≤ 20℃ and relative humidity RH ≥ 90%. Air is introduced through an air compressor by an air introduction device. The introduced air flow rate is adjusted by a gas mass flow controller, with the flow rate selected as 30L / min. The constant temperature water bath 19 controls the temperature of the circulating water, maintaining the humid air temperature inside the air preparation tower 15 at 10℃. Air is introduced from bottom to top by the air compressor inside the humid air preparation tower, while circulating water flows from top to bottom, with the two in countercurrent contact, and the relative humidity of the humid air ≥ 90%. Through the control and adjustment of the control unit of the amine aerosol control system based on phase change condensation technology of this invention, combined with real-time monitoring data of humid air and decarbonized flue gas, precise control of system parameters is achieved, ensuring stable and efficient system operation, effectively reducing amine aerosol emissions, improving operational efficiency and accuracy, enhancing environmental friendliness, and demonstrating applicability.

[0073] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An amine aerosol control system based on phase change condensation technology, characterized in that, The amine aerosol control system includes a particle growth tower (1), which is equipped with a humid air inlet (2), a decarbonized flue gas inlet (3), an amine liquid outlet, an exhaust port, and a control unit; wherein: The humid air inlet (2) is connected to an automatic humid air supply unit, which is used to input humid air into the particle growth tower (1) through the humid air inlet (2); the automatic humid air supply unit includes a humid air preparation tower (15), which is equipped with an air input unit and a circulating water unit; A humid air monitoring unit is configured between the humid air inlet (2) and the humid air automatic supply unit; the decarbonized flue gas inlet (3) is used to input decarbonized flue gas and is equipped with a flue gas monitoring unit; the control unit is used to control the flow rate of the air input unit and the circulating water unit according to the monitoring data of the humid air monitoring unit and the flue gas monitoring unit; The exhaust port is equipped with a demisting unit so that the gas discharged from the exhaust port passes through the demisting unit before being discharged. The flue gas monitoring unit includes a decarbonized flue gas temperature and humidity transmitter (7) and a decarbonized flue gas sampling chamber (8). The decarbonized flue gas temperature and humidity transmitter (7) and the decarbonized flue gas sampling chamber (8) are located outside the particle growth tower (1) at the decarbonized flue gas inlet (3). The humid air monitoring unit includes a humid air temperature and humidity transmitter (9) and a humid air sampling chamber (10), which are located on the passage connecting the decarbonized flue gas inlet (3) to the humid air preparation tower (15).

2. The amine aerosol control system based on phase change condensation technology according to claim 1, characterized in that, The air input unit includes an air compressor (17) that is connected to a humid air preparation tower (15), and a gas mass flow controller (18) is disposed between the humid air preparation tower (15) and the air compressor (17).

3. The amine aerosol control system based on phase change condensation technology according to claim 1, characterized in that, The circulating water unit forms a passage at the bottom and near the top of the humid air preparation tower (15). The circulating water unit includes a constant temperature water bath (19). The circulating water unit is equipped with a magnetic circulation pump (20), a rotor flow meter (21), and a valve (22) on the external passage of the humid air preparation tower (15).

4. The amine aerosol control system based on phase change condensation technology according to claim 1, characterized in that, The humid air preparation tower (15) contains packing material (16), which is located between the passages of the circulating water unit.

5. The amine aerosol control system based on phase change condensation technology according to claim 1, characterized in that, The humid air prepared by the automatic humid air supply unit has a temperature not exceeding 20°C and a relative humidity not less than 90%.

6. The amine aerosol control system based on phase change condensation technology according to claim 1, characterized in that, The demisting unit includes a demister (11), which is equipped with a demisting net (12) and a pressure measuring element.

7. The amine aerosol control system based on phase change condensation technology according to claim 6, characterized in that, The demisting unit is detachably installed in the particle growth tower (1).

8. A control method for an amine aerosol control system based on phase change condensation technology as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Open the automatic humid air supply unit and connect the decarbonized flue gas inlet (3) to the decarbonized flue gas input device; S2. The control unit is based on PID control and controls the flow rate of the air input unit and the circulating water unit according to the monitoring data of the humid air monitoring unit and the flue gas monitoring unit. S3. The humid air generated by the automatic humid air supply unit and the decarbonized flue gas enter the particle growth tower (1) and mix. The aerosol particles are removed after entering the demisting unit with the decarbonized flue gas. The amine liquid is discharged through the amine liquid outlet. The decarbonized flue gas, after the removal of aerosol particles, is discharged through the demister unit.

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