Amine aerosol control system and method based on phase change condensation technology

Abstract

The invention provides an amine aerosol control system and method based on a phase change condensation technology. The system comprises a particle growth tower, and the particle growth tower is provided with a wet air inlet, a decarburized flue gas inlet, an amine liquid outlet, an exhaust port and a control unit; the moist air inlet is connected with an automatic moist air supply unit, the automatic moist air supply unit comprises a moist air preparation tower, and the moist air preparation tower is provided with an air input unit and a circulating water unit; a humid air monitoring unit is arranged between the humid air inlet and the humid air automatic supply unit; the decarburized 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 port is provided with a demisting unit, so that gas exhausted from the exhaust port is exhausted after passing through the demisting unit. By effectively controlling the amine aerosol, the purification efficiency of the decarburized flue gas is improved, the environmental pollution is reduced, and the comprehensive control on the escape of the amine aerosol is realized to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of removal control of escaped amines in the form of aerosols, and in particular relates to an amine aerosol control system and method based on phase change condensation technology. Background Art

[0002] At present, with the development of the global economy and the continuous improvement of the level of industrialization, the consumption of fossil energy has grown rapidly, followed by large-scale emissions of greenhouse gases represented mainly by carbon dioxide, which has led to global warming. Among greenhouse gases, CO2 has the greatest impact, accounting for about 60% of the contribution of all greenhouse gases. CO2 capture, utilization and storage technology (CCUS) is the most effective and economically feasible way to achieve CO2 emission reduction as the current mainstream technical route. Among them, post-combustion capture does not require the transformation of existing thermal power plants and is the current research hotspot. Chemical absorption method has the most mature process and the greatest application potential in post-combustion capture.

[0003] At present, in the actual operation process, due to the exothermic reaction between the absorbent lean liquid and the CO2 in the flue gas in the absorption tower, part of the absorbent escapes into the atmosphere with the decarbonized flue gas in the form of volatilization or aerosol. The absorbent degrades through oxidation or thermal degradation, which will lead to the formation of carcinogens such as nitramines and nitrosamines, thereby damaging the organisms in the soil and polluting the drinking water source. In addition, due to the high market price of the absorbent, the escape of the absorbent has led to a sharp increase in the operating cost of the carbon capture system. Therefore, the amine escape generated by the carbon capture system must be controlled to reduce emissions. However, although the traditional control method can effectively reduce the volatile emissions of amine escape from the carbon capture system to a certain extent, it is currently impossible to establish an effective removal environment for the escaped amine in the form of aerosols with serious emissions, and the degree of automation control is limited, resulting in poor emission control effects. Summary of the invention

[0004] The present invention provides an amine aerosol control system and method based on phase change condensation technology, aiming to solve the problem that an effective removal environment cannot be established for the escaped amine in the form of aerosol with serious emission, the degree of automation control is limited, and the emission control effect is poor.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

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

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

[0008] 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 used to input decarbonized flue gas and is equipped with a flue gas monitoring unit; the control unit is used to control the flow of the air input unit and the circulating water unit according to the monitoring data of the wet air monitoring unit and the flue gas monitoring unit;

[0009] The exhaust port is provided with a demisting unit so that the gas discharged from the exhaust port passes through the demisting unit and then is discharged.

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

[0011] In some embodiments, a circulating water unit forms a passage at the bottom and near the top of the wet air preparation tower, and the circulating water unit includes a constant temperature water bath. The circulating water unit is provided with a magnetic circulation pump, a rotor flowmeter and a valve on the external passage of the wet air preparation tower.

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

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

[0014] In some embodiments, the wet air preparation tower has fillers therein, and the fillers are located between the passages 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 defogger unit includes a defogger, a defogger net is disposed inside the defogger, and a pressure measuring member is disposed in the defogger.

[0017] Furthermore, the demisting unit is detachably arranged on the particle growth tower.

[0018] The present invention also provides an amine aerosol control method based on phase change condensation technology, comprising the following steps:

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

[0020] S2, the control unit controls the flow of the air input unit and the circulating water unit based on the PID control according to the monitoring data of the wet air monitoring unit and the smoke monitoring unit;

[0021] S3. The wet air generated by the wet air automatic supply unit and the decarbonized flue gas enter the particle growth tower and are mixed. The aerosol particles enter the demisting unit with the decarbonized flue gas and are removed. 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.

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

[0023] The present invention discloses an amine aerosol control system based on phase change condensation technology. The amine aerosol control system comprises a particle growth tower, which is provided with a wet air inlet, a decarbonized flue gas inlet, an amine liquid outlet, an exhaust port and a control unit; wherein: the wet air inlet is connected with a wet air automatic supply unit, which is used to input wet air to the particle growth tower through the wet air inlet; the wet air automatic supply unit comprises a wet air preparation tower, which is provided with an air input unit and a circulating water unit; a wet air monitoring unit is provided between the wet air inlet and the wet air automatic supply unit; the decarbonized flue gas inlet is used to input decarbonized flue gas and is provided with a flue gas monitoring unit; the control unit is used to control the flow of the air input unit and the circulating water unit according to the monitoring data of the wet air monitoring unit and the flue gas monitoring unit; the exhaust port is provided with a defogger unit, so that the gas discharged from the exhaust port is discharged after passing through the defogger unit. Based on the above, the amine aerosol control system of the present invention realizes effective control of amine aerosol through the combined coordinated control of the particle growth tower, the wet air automatic supply unit, the monitoring unit and the control unit. Through effective control, the wet air and the decarbonized flue gas are reasonably mixed, thereby promoting the growth of aerosol particles, and then removed by the demisting unit, thereby improving the purification efficiency of the decarbonized flue gas and reducing environmental pollution. The present invention improves the amine escape problem existing in the carbon capture system, especially the emission in the form of aerosol. The present invention realizes efficient control of amine aerosol escape by introducing the device of the particle growth tower, the wet air supply unit and the demisting unit. The present invention is based on the water vapor phase change condensation method, and by establishing a water vapor supersaturated environment, the water vapor is prompted to condense on the surface of the particles, thereby increasing the particle size of the particles. The system structure design of the present invention is simple, the cost control is better, the temperature and humidity of the wet air are adjusted by automatic control, a relatively reasonable water vapor supersaturated environment is established, and then the removal function of the demisting unit is combined to achieve comprehensive control of amine aerosol escape, which has better practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

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

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

[0027] Figure 3 It is a schematic diagram of the wet air flow rate in an embodiment of an amine aerosol control system and method based on phase change condensation technology of the present invention;

[0028] Figure 4 A schematic diagram of the relative humidity of wet air in an embodiment of an amine aerosol control system and method based on phase change condensation technology of the present invention;

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

[0030] 1. Particle growth tower; 2. Wet air inlet; 3. Decarbonization flue gas inlet; 4. Gas outlet; 5. Amine liquid recovery outlet; 6. Thermal insulation layer; 7. Decarbonization flue gas temperature and humidity transmitter; 8. Decarbonization flue gas sampling chamber; 9. Wet air temperature and humidity transmitter; 10. Wet air sampling chamber; 11. Defogger; 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. Wet air preparation tower; 16. Packing; 17. Air compressor; 18. Gas mass flow controller; 19. Constant temperature water bath; 20. Magnetic circulation pump; 21. Rotor flowmeter; 22. Valve. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

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

[0035] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which 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 is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] How to improve the removal effect of seriously emitted aerosol-type escaped amines, how to improve the emission control effect and automation level, and thus improve the removal accuracy and efficiency of emissions.

[0038] The present invention provides an amine aerosol control system based on phase change condensation technology, the amine aerosol control system comprises a particle growth tower 1, the particle growth tower 1 is provided with a wet air inlet 2, a decarbonized flue gas inlet 3, an amine liquid outlet, an exhaust port and a control unit; wherein:

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

[0040] A wet air monitoring unit is arranged between the wet air inlet 2 and the wet 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 of the air input unit and the circulating water unit according to the monitoring data of the wet air monitoring unit and the flue gas monitoring unit;

[0041] The exhaust port is provided with a demisting unit so that the gas discharged from the exhaust port passes through the demisting unit and then is discharged.

[0042] The present invention discloses an amine aerosol control system based on phase change condensation technology. Based on the water vapor phase change condensation method, by establishing a water vapor supersaturated environment, water vapor is prompted to condense on the surface of particulate matter. Through the setting of the control unit and the monitoring unit of the system, the temperature and humidity of the wet air can be automatically adjusted according to the temperature and humidity of the decarbonized flue gas to establish the best water vapor supersaturated environment. The present invention effectively controls the generation and diffusion of amine aerosols in the system by combining the phase change condensation process of wet air and decarbonized flue gas in the particle growth tower, reduces environmental pollution, and optimizes the decarbonization process. Real-time monitoring and adjustment of the control unit ensure the stability and efficiency of the system operation. In addition, the present invention cooperates with the removal function of the demisting unit to jointly realize the control of amine aerosol escape, reduces the emission of amine escape from the carbon capture system, especially the escape in the form of aerosol, and reduces the loss of absorbent.

[0043] like Figure 1 As shown, in an amine aerosol control system based on phase change condensation technology of the present invention, the flue gas monitoring unit includes a decarbonization flue gas temperature and humidity transmitter 7 and a decarbonization flue gas sampling chamber 8, and the decarbonization flue gas temperature and humidity transmitter 7 and the decarbonization flue gas sampling chamber 8 are arranged outside the particle growth tower 1, located at the decarbonization flue gas inlet 3. The present invention monitors and feeds back the state of the decarbonization flue gas in real time through the arrangement of the decarbonization flue gas temperature and humidity transmitter and the sampling chamber, provides accurate data support for the control unit, facilitates timely adjustment of system parameters, ensures the effective decarbonization, and improves the accuracy of the operation.

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

[0045] As an embodiment, in an amine aerosol control system based on phase change condensation technology of the present invention, a thermal insulation layer 6 is provided inside the particle growth tower 1, and the thermal insulation layer 6 is made of thermal insulation material. The particle growth tower 1 is made of acrylic material. In addition, a filler 16 is provided inside the particle growth tower 1 of the present invention to form a filler layer, and the filler layer is composed of spherical fillers of polypropylene material. As an option, the particle size of the spherical filler can be selected to be 1-3mm, and the height of the filler can be selected to be 2m. Specifically, it can be flexibly adjusted according to actual needs, and the control accuracy and preparation efficiency of humid air can be improved by controlling the airflow and water circulation amount.

[0046] like Figure 1 As shown, in an amine aerosol control system based on phase change condensation technology of the present invention, the wet air automatic supply unit is provided with a wet 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. Among them, as an embodiment, the gas mass flow controller 18 can control the air flow rate introduced by the air compressor 17 into the wet air preparation tower 15 to be 10-30L / min. The constant temperature water bath 19 can control the temperature of the wet air in the air preparation tower 15 to be 10-20°C. The air compressor 17 ensures a stable air supply, while the gas mass flow controller 18 accurately controls the air flow entering the wet air preparation tower 15, thereby improving the accuracy and efficiency of wet air preparation. In addition, in combination with the configuration of the circulating water unit through the constant temperature water bath 19, the magnetic circulation pump 20, the rotor flow meter 21 and the valve 22, the precise control of the temperature in the wet air preparation tower 15 and the stable maintenance of the humidity are achieved, which helps to form the required high-quality wet air.

[0047] Preferably, a guide plate (not shown in the figure) is arranged in the particle growth tower 1 of the present invention, and the guide plate can be made of stainless steel material, and the spacing of the guide plates can be 0.1-0.5m. By designing the guide plate, the efficiency of mixed removal is improved.

[0048] In the amine aerosol control system based on phase change condensation technology of the present invention, a demisting unit is arranged at the position of the gas outlet 4, and the demisting unit includes a demisting device 11, and a demisting net 12 is arranged in the demisting device 11, and the demisting device 11 is equipped with a pressure measuring device. The demisting unit is detachably arranged in the particle growth tower 1. In the present invention, 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 are set in the demisting device 11. The pressure measuring point 13 at the front end of the mist 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 the aerosol particles in the decarbonized flue gas and protect the subsequent equipment from pollution. At the same time, the setting of the pressure measuring device facilitates the monitoring of the operating status of the demisting unit.

[0049] In some embodiments, the demisting net 12 can be made of 304 stainless steel, DP high-efficiency filter net, and round mesh. The thickness of the demisting net 12 can be selected in three specifications: 50mm, 100mm, and 150mm. The diameter of the demisting net 12 can be selected in two specifications: 50mm and 60mm. In addition, the shell of the demisting device 12 of the present invention and the particle growth tower 1 are connected by adopting a detachable design, such as a snap-on connection. The detachable design facilitates the maintenance and replacement of components in the demisting unit, thereby 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 wet air supply unit, and connect the decarbonized flue gas inlet 3 to the decarbonized flue gas input device;

[0052] S2, the control unit controls the flow of the air input unit and the circulating water unit based on the PID control according to the monitoring data of the wet air monitoring unit and the smoke monitoring unit;

[0053] S3. The wet air generated by the wet air automatic supply unit and the decarbonized flue gas enter the particle growth tower 1 and are mixed. The aerosol particles enter the demisting unit with the decarbonized flue gas and are removed. 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] The present invention realizes precise regulation of the parameters of the amine aerosol control system through PID control combined with real-time monitoring data of wet air and decarbonized flue gas, ensures stable and efficient operation of the system, effectively reduces the emission of amine aerosol, improves the effectiveness of the decarbonization process, and enhances environmental protection.

[0055] like Figure 2 As shown, regarding an amine aerosol control method based on phase change condensation technology, specifically:

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

[0057] 2. The circulating water is sent to the wet air preparation tower by the magnetic circulating pump 20. The circulating water flow rate is regulated by the valve 22.

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

[0059] 4. The air compressor 17 in the wet air preparation tower 15 introduces air from bottom to top, and circulates water from top to bottom, and the two flow in countercurrent.

[0060] 5. The wet air generated by the wet air supply unit enters the particle growth tower 1 through the wet 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 wet air generated by the wet air supply unit is mixed with the decarbonized flue gas in the particle growth tower 1 to enlarge the aerosol particles. The aerosol particles enter the demisting unit along with the decarbonized flue gas and are effectively removed.

[0063] 8. The effectively removed amine liquid is regularly discharged and recovered through the amine liquid recovery outlet 5.

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

[0065] Furthermore, the present invention adopts PID control to prepare wet air, 1. collect the temperature and humidity of the decarbonized flue gas, and the actual temperature and humidity of the wet air; 2. calculate the error: the difference between the target value and the actual value; 3. call the PID_Control function to calculate the control amount;

[0066] Among them, the PID_Control function includes: 1) Calculate the proportional term: the product of the error signal and the proportional coefficient; 2) Calculate the integral term: the quotient of the integral of the error signal and the integral time; 3) Calculate the differential term: the quotient of the rate of change of the error signal and the differential time; 4) Calculate the control amount: the sum of the proportional term, the integral term and the differential term;

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

[0068] Repeat the above steps 1-5 to perform loop control.

[0069] Among them, further, the PID_Control function further includes integral saturation suppression and differential filtering to improve the control effect. The PID parameters adopt adaptive PID control, and dynamically adjust the PID parameters according to the system state to improve the control effect.

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

[0071] The particle growth tower 1 of the present invention is provided with heat-insulating materials, and is made of acrylic material. A 2m polypropylene spherical filler layer with a particle size of 1-3mm is provided in the tower. A stainless steel guide plate is provided in the tower, and the spacing is 0.1-0.5m. The demisting net 12 is made of 304 stainless steel material, DP high-efficiency filter net, and round mesh wire is used. The thickness of the demisting net 12 can be selected as 100mm. The diameter of the demisting net 12 is selected as 60mm. The outer shell of the demisting device 12 is connected to the particle growth tower 1 by a snap-on connection. The wet air preparation tower 15 is provided with a filler 16. The filler 16 is a ring bulk filler.

[0072] like Figure 3-Figure 5 As shown, the wet air automatic supply unit calls the PID_Control function to calculate the control amount. The gas mass flow controller 18 controls the air compressor 17 to introduce air flow into the wet air preparation tower 15 in the range of 0-1.8Nm 3 / h. The constant temperature water bath 19 controls the temperature of the wet air in the air preparation tower 15. The wet air prepared by the wet air supply unit has a temperature T≤20°C and a relative humidity RH≥90%. The air introduction device introduces air through an air compressor. The introduced air flow rate is adjusted by a gas mass flow controller, and the flow rate is selected to be 30L / min. The constant temperature water bath 19 controls the circulating water temperature to control the wet air temperature in the air preparation tower 15 to be 10°C. The air compressor in the wet air preparation tower introduces air from bottom to top, and the circulating water from top to bottom, and the two are in countercurrent contact, and the relative humidity of the wet air is ≥90%. Through the control and adjustment of the control unit of the amine aerosol control system based on phase change condensation technology of the present invention, combined with the real-time monitoring data of wet air and decarbonized flue gas, the system parameters can be accurately regulated to ensure stable and efficient operation of the system, effectively reduce the emission of amine aerosols, improve the efficiency and accuracy of the operation, improve environmental protection, and have applicability.

[0073] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An amine aerosol control system based on phase change condensation technology, It is characterized in that The amine aerosol control system comprises a particle growth tower (1), wherein the particle growth tower (1) is provided with a wet air inlet (2), a decarbonized flue gas inlet (3), an amine liquid outlet, an exhaust port and a control unit; wherein: The wet air inlet (2) is connected to an automatic wet air supply unit, and the automatic wet air supply unit is used to input wet air into the particle growth tower (1) through the wet air inlet (2); the automatic wet air supply unit includes a wet air preparation tower (15), and the wet air preparation tower (15) is equipped with an air input unit and a circulating water unit; A wet air monitoring unit is arranged between the wet air inlet (2) and the wet 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 of the air input unit and the circulating water unit according to the monitoring data of the wet air monitoring unit and the flue gas monitoring unit; The exhaust port is provided with a demisting unit so that the gas discharged from the exhaust port passes through the demisting unit and then is discharged.

2. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that The air input unit comprises an air compressor (17) which is conductively connected to a wet air preparation tower (15), and a gas mass flow controller (18) is arranged between the wet 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, It is characterized in that The circulating water unit forms passages at the bottom and near the top of the wet air preparation tower (15), the circulating water unit comprises a constant temperature water bath (19), and the circulating water unit is provided with a magnetic circulation pump (20), a rotor flowmeter (21) and a valve (22) on the external passage of the wet air preparation tower (15).

4. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that The flue gas monitoring unit comprises a decarbonized flue gas temperature and humidity transmitter (7) and a decarbonized flue gas sampling chamber (8), wherein the decarbonized flue gas temperature and humidity transmitter (7) and the decarbonized flue gas sampling chamber (8) are arranged at a position where the decarbonized flue gas inlet (3) is located outside the particle growth tower (1).

5. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that The wet air monitoring unit comprises a wet air temperature and humidity transmitter (9) and a wet air sampling chamber (10), and the wet air temperature and humidity transmitter (9) and the wet air sampling chamber (10) are arranged on a passage connecting the decarbonized flue gas inlet (3) to the wet air preparation tower (15).

6. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that The wet air preparation tower (15) has a filler (16) therein, and the filler (16) is located between the passages of the circulating water unit.

7. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that 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%.

8. The amine aerosol control system based on phase change condensation technology according to claim 1, It is characterized in that The demisting unit comprises a demisting device (11), a demisting net (12) is arranged inside the demisting device (11), and the demisting device (11) is provided with a pressure measuring piece.

9. The amine aerosol control system based on phase change condensation technology according to claim 8, It is characterized in that The demisting unit is detachably arranged on the particle growth tower (1).

10. A control method for an amine aerosol control system based on phase change condensation technology according to any one of claims 1 to 9, It is characterized in that The steps include: S1. Turn on the automatic wet air supply unit, and connect the decarbonized flue gas inlet (3) to the decarbonized flue gas input device; S2, the control unit controls the flow of the air input unit and the circulating water unit based on the PID control according to the monitoring data of the wet air monitoring unit and the smoke monitoring unit; S3, the wet air generated by the wet air automatic supply unit and the decarbonized flue gas enter the particle growth tower (1) and are mixed, and the aerosol particles enter the demisting unit with the decarbonized flue gas and are removed; the amine liquid is discharged through the amine liquid outlet; The decarbonized flue gas after the aerosol particles are removed is discharged after passing through the demisting unit.

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