Carbon dioxide trapping device for treating white smoke

Abstract

The invention provides a carbon dioxide trapping device for treating white smoke. The carbon dioxide trapping device comprises an absorption tower; a multi-medium condenser; a heat recovery condenser; the gas-liquid separator is arranged at the downstream of the heat recovery condenser and is connected with an outlet of the heat recovery condenser; the four-way valve is connected with the gas-liquid separator; the liquid storage tank is arranged at the downstream of the four-way valve, the liquid outlet is connected with the liquid storage tank, and the liquid storage tank is connected with the first liquid inlet; the phase splitter is arranged on one side of the absorption tower, and a barren liquor outlet is connected with the liquid storage tank; the heat preservation and storage device is arranged on one side of the heat recovery condenser, and the multi-medium condenser and the heat recovery condenser are both connected with an inlet of the heat preservation and storage device through a first heat exchange pipe; the heat exchanger is arranged on the downstream of the heat preservation liquid storage device, the heat exchanger comprises a hot air heat exchange section and a cold air heat exchange section connected with the hot air heat exchange section, and the problem that waste heat of white smoke cannot be effectively utilized by waste heat recovery equipment in the related technology is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide capture, and in particular to a carbon dioxide capture device for processing white smoke. Background Art

[0002] The carbon dioxide capture device for treating white smoke usually includes an absorption tower. When the absorption tower discharges the flue gas, a small amount of absorbent (such as amine absorbents such as MEA) is carried out with the flue gas. If these substances evaporate or condense quickly in the air, white smoke will be formed.

[0003] Direct emission of white smoke will not only cause air pollution, but also fail to fully consider the characteristics of waste heat, such as temperature level and availability, resulting in the inability of waste heat recovery equipment to effectively utilize the waste heat. Summary of the invention

[0004] The main purpose of the present invention is to provide a carbon dioxide capture device for treating white smoke, so as to solve the problem that the waste heat recovery equipment in the related art cannot effectively utilize the waste heat of the white smoke.

[0005] In order to achieve the above-mentioned object, the present invention provides a carbon dioxide capture device for treating white smoke, comprising: an absorption tower, on which a flue gas inlet, a flue gas outlet, a first liquid inlet and a liquid outlet are arranged; a multi-media condenser, the inlet of the multi-media condenser is connected to the flue gas outlet through a first connecting pipeline; a heat recovery condenser, the inlet of the heat recovery condenser is connected to the outlet of the multi-media condenser; a gas-liquid separator, which is arranged downstream of the heat recovery condenser and connected to the outlet of the heat recovery condenser; a four-way valve, which is connected to the gas-liquid separator, and the four-way valve has a gas outlet and a liquid outlet; a liquid storage tank, which is arranged downstream of the four-way valve, the liquid outlet is connected to the liquid storage tank, and the liquid storage tank is connected to the first liquid inlet ; A phase separator is arranged on one side of the absorption tower, and is provided with a second liquid inlet, a rich liquid outlet and a lean liquid outlet, the second liquid inlet is connected to the liquid outlet, and the lean liquid outlet is connected to the liquid storage tank; a thermal insulation heat storage device is arranged on one side of the heat recovery condenser, and the multi-media condenser and the heat recovery condenser are both connected to the inlet of the thermal insulation heat storage device through the first heat exchange tube; a heat exchanger, the heat exchanger is arranged downstream of the thermal insulation liquid storage device, the heat exchanger includes a hot gas heat exchange section and a cold gas heat exchange section connected to the hot gas heat exchange section, the inlet of the hot gas heat exchange section is connected to the outlet of the thermal insulation heat storage device, the outlet of the hot gas heat exchange section is connected to the phase separator, the inlet of the cold gas heat exchange section is connected to the gas outlet, and the outlet of the cold gas heat exchange section is connected to the outside.

[0006] Furthermore, the carbon dioxide capture device for treating white smoke also includes an indoor condenser and an outdoor condenser connected between the heat recovery condenser and the gas-liquid separator, the inlet of the indoor condenser and the inlet of the outdoor condenser are connected to the outlet of the multi-media condenser through a second connecting pipe, and the outlet of the indoor condenser and the outlet of the outdoor condenser are respectively connected to the gas-liquid separator through a third connecting pipe.

[0007] Furthermore, both the indoor condenser and the outdoor condenser are connected to the inlet of the thermal insulation heat storage tank through the second heat exchange tube.

[0008] Furthermore, a reversing valve is connected between the second connecting pipeline and the outlet of the multi-media condenser, and the reversing valve has a first working position in which the outlet of the multi-media condenser is connected to the inlet of the indoor condenser, a second working position in which the outlet of the multi-media condenser is connected to the inlet of the outdoor condenser, and a third working position in which the outlet of the multi-media condenser is disconnected from both the inlet of the indoor condenser and the inlet of the outdoor condenser.

[0009] Furthermore, the carbon dioxide capture device for processing white smoke also includes a heat meter arranged on the heat recovery condenser.

[0010] Furthermore, a flow control valve is connected between the liquid storage tank and the first liquid inlet.

[0011] Furthermore, an on-off control valve is provided on the first connecting pipeline, and the on-off control valve can open and close the first connecting pipeline.

[0012] Furthermore, the phase separator comprises an outer shell and an inner shell arranged inside the outer shell, an interlayer is formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the interlayer.

[0013] Furthermore, a check valve is connected between the liquid outlet and the liquid storage tank.

[0014] Furthermore, a pump body is connected between the second liquid inlet and the liquid outlet.

[0015] By applying the technical solution of the present invention, the carbon dioxide capture device for treating white smoke includes: an absorption tower, a multi-media condenser, a heat recovery condenser, a gas-liquid separator, a four-way valve, a liquid storage tank, a phase separator, a heat preservation heat storage device and a heat exchanger. The absorption tower is provided with a flue gas inlet, a flue gas outlet, a first liquid inlet and a liquid outlet. The inlet of the multi-media condenser is connected to the flue gas outlet through a first connecting pipeline. The inlet of the heat recovery condenser is connected to the outlet of the multi-media condenser. The gas-liquid separator is arranged downstream of the heat recovery condenser and connected to the outlet of the heat recovery condenser. The four-way valve is connected to the gas-liquid separator, and the four-way valve has a gas outlet and a liquid outlet. The liquid storage tank is arranged downstream of the four-way valve, the liquid outlet is connected to the liquid storage tank, and the liquid storage tank is connected to the first liquid inlet. The phase separator is arranged on one side of the absorption tower, and the phase separator is provided with a second liquid inlet, a rich liquid outlet and a lean liquid outlet, the second liquid inlet is connected to the liquid outlet, and the lean liquid outlet is connected to the liquid storage tank. The heat preservation heat storage device is arranged on one side of the heat recovery condenser, and the multi-media condenser and the heat recovery condenser are connected to the inlet of the heat preservation heat storage device through the first heat exchange tube. The heat exchanger is arranged downstream of the heat preservation liquid storage device, and the heat exchanger includes a hot gas heat exchange section and a cold gas heat exchange section connected to the hot gas heat exchange section. The inlet of the hot gas heat exchange section is connected to the outlet of the heat preservation heat storage device, the outlet of the hot gas heat exchange section is connected to the phase separator, the inlet of the cold gas heat exchange section is connected to the gas outlet, and the outlet of the cold gas heat exchange section is connected to the outside. The flue gas coming out of the absorption tower first enters the multi-media condenser, and the flue gas temperature is reduced by heat exchange with the cooling medium in the multi-media condenser, and part of the water vapor is condensed into liquid. The heat recovery condenser further condenses the flue gas coming out of the multi-media condenser, and the heat preservation heat storage device can recover more heat energy generated by the multi-media condenser and the heat recovery condenser. This heat energy can be used for the phase separator to provide insulation or heating in a low-temperature working environment to ensure the phase separation effect of the phase separator, and effectively utilize the waste heat of the white smoke. Furthermore, since the flue gas temperature and pressure are reduced through multi-stage condensation and heat exchange, the condensation of water vapor into small water droplets is reduced, thereby reducing the generation of white smoke, so that the flue gas that meets environmental protection requirements is discharged into the atmosphere from the outlet of the cold air heat exchange section. Therefore, the carbon dioxide capture device for treating white smoke in the present application can not only solve the problem of white smoke polluting the atmosphere, but also solve the problem that the waste heat recovery equipment cannot effectively utilize the waste heat of white smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A piping connection diagram of an embodiment of a carbon dioxide capture device for processing white smoke according to the present invention is shown.

[0018] The above drawings include the following reference numerals:

[0019] 10. Absorption tower; 11. Flue gas inlet; 12. Flue gas outlet; 13. First liquid inlet; 14. Liquid outlet;

[0020] 20. Multi-medium condenser; 21. First connecting pipeline; 22. Second connecting pipeline; 23. Third connecting pipeline;

[0021] 30. Heat recovery condenser; 31. Heat meter;

[0022] 41. Gas-liquid separator; 42. Four-way valve; 43. Reversing valve;

[0023] 51. Liquid storage tank; 52. Flow control valve; 53. On-off control valve; 54. Check valve;

[0024] 60. phase separator; 61. second liquid inlet; 62. rich liquid outlet; 63. lean liquid outlet; 64. pump body;

[0025] 70. Insulated heat storage device; 71. First heat exchange tube; 72. Second heat exchange tube; 73. Heat exchanger;

[0026] 81. Indoor condenser; 82. Outdoor condenser. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. 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.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0030] like Figure 1 As shown, the present application provides a carbon dioxide capture device for treating white smoke, and an embodiment of the carbon dioxide capture device for treating white smoke includes: an absorption tower 10, a multi-media condenser 20, a heat recovery condenser 30, a gas-liquid separator 41, a four-way valve 42, a liquid storage tank 51, a phase separator 60, a heat preservation heat storage device 70 and a heat exchanger 73. The absorption tower 10 is provided with a flue gas inlet 11, a flue gas outlet 12, a first liquid inlet 13 and a liquid outlet 14. The inlet of the multi-media condenser 20 is connected to the flue gas outlet 12 through a first connecting pipeline 21. The inlet of the heat recovery condenser 30 is connected to the outlet of the multi-media condenser 20. The gas-liquid separator 41 is arranged downstream of the heat recovery condenser 30 and is connected to the outlet of the heat recovery condenser 30. The four-way valve 42 is connected to the gas-liquid separator 41, and the four-way valve 42 has a gas outlet and a liquid outlet. The liquid storage tank 51 is arranged downstream of the four-way valve 42, and the liquid outlet is connected to the liquid storage tank 51, and the liquid storage tank 51 is connected to the first liquid inlet 13. The phase separator 60 is arranged on one side of the absorption tower 10, and the phase separator 60 is provided with a second liquid inlet 61, a rich liquid outlet 62 and a lean liquid outlet 63, the second liquid inlet 61 is connected to the liquid outlet 14, and the lean liquid outlet 63 is connected to the liquid storage tank 51. The heat preservation heat storage 70 is arranged on one side of the heat recovery condenser 30, and the multimedia condenser 20 and the heat recovery condenser 30 are both connected to the inlet of the heat preservation heat storage 70 through the first heat exchange pipe 71. The heat exchanger 73 is arranged downstream of the thermal insulation storage liquid. The heat exchanger 73 includes a hot gas heat exchange section and a cold gas heat exchange section connected to the hot gas heat exchange section. The inlet of the hot gas heat exchange section is connected to the outlet of the thermal insulation heat storage 70, the outlet of the hot gas heat exchange section is connected to the phase separator 60, the inlet of the cold gas heat exchange section is connected to the gas outlet, and the outlet of the cold gas heat exchange section is connected to the outside.

[0031] The technical solution of this embodiment is applied, and the carbon dioxide capture device for treating white smoke includes: an absorption tower 10, a multi-media condenser 20, a heat recovery condenser 30, a gas-liquid separator 41, a four-way valve 42, a liquid storage tank 51, a phase separator 60, a heat preservation heat storage device 70 and a heat exchanger 73. The flue gas coming out of the absorption tower 10 first enters the multi-media condenser 20, and the flue gas temperature is reduced by heat exchange with the cooling medium such as cooling water or air in the multi-media condenser 20, and part of the water vapor condenses into liquid. The heat recovery condenser 30 further condenses the flue gas coming out of the multi-media condenser 20, and the heat preservation heat storage device 70 can recover more heat energy generated by the multi-media condenser 20 and the heat recovery condenser 30. This heat energy can be used for the phase separator 60 to provide insulation or heating in a low-temperature working environment to ensure the phase separation effect of the phase separator 60, and effectively utilize the waste heat of white smoke. Furthermore, since the flue gas temperature and pressure are reduced through multi-stage condensation and heat exchange, the condensation of water vapor into small water droplets is reduced, thereby reducing the generation of white smoke, so that the flue gas that meets environmental protection requirements is discharged into the atmosphere from the outlet of the cold air heat exchange section. Therefore, the carbon dioxide capture device for processing white smoke in this embodiment can not only solve the problem of white smoke polluting the atmosphere, but also solve the problem that the waste heat recovery equipment cannot effectively utilize the waste heat of white smoke. The above-mentioned gas-liquid separator 41 can separate the gaseous and liquid in the flue gas.

[0032] like Figure 1 As shown, the carbon dioxide capture device for processing white smoke also includes an indoor condenser 81 and an outdoor condenser 82 connected between the heat recovery condenser 30 and the gas-liquid separator 41. The inlet of the indoor condenser 81 and the inlet of the outdoor condenser 82 are connected to the outlet of the multi-media condenser 20 through the second connecting pipeline 22, and the outlet of the indoor condenser 81 and the outlet of the outdoor condenser 82 are respectively connected to the gas-liquid separator 41 through the third connecting pipeline 23. According to the temperature and operation requirements of the phase separator 60, the indoor condenser 81 or the outdoor condenser 82 is selected to further condense the gas. This helps to further reduce the flue gas temperature to different ranges, reduce the formation of white smoke, and also takes into account the temperature and operation requirements of the phase separator 60 to avoid the loss of waste heat during transmission and storage.

[0033] like Figure 1 As shown, in order to effectively avoid the loss of waste heat during transmission and storage, the indoor condenser 81 and the outdoor condenser 82 are connected to the inlet of the heat preservation heat storage device 70 through the second heat exchange pipe 72. The heat preservation heat storage device 70 can store heat energy and recover the heat energy of the multimedia condenser 20, the heat recovery condenser 30, the indoor condenser 81 and the outdoor condenser 82, so as to release the heat energy when needed, thereby improving the overall energy efficiency of the carbon dioxide capture device for treating white smoke.

[0034] like Figure 1As shown, in order to meet the temperature and operation requirements of the phase separator 60, a reversing valve 43 is connected between the second connecting pipe 22 and the outlet of the multi-media condenser 20, and the reversing valve 43 has a first working position that connects the outlet of the multi-media condenser 20 with the inlet of the indoor condenser 81, a second working position that connects the outlet of the multi-media condenser 20 with the inlet of the outdoor condenser 82, and a third working position that disconnects the outlet of the multi-media condenser 20 from both the inlet of the indoor condenser 81 and the inlet of the outdoor condenser 82.

[0035] The multi-media condenser 20 is usually designed as a shell and tube or plate heat exchanger, which contains a large amount of cooling medium (such as cooling water or air) inside. When the flue gas passes through the heat exchanger, it exchanges heat with the cooling medium to reduce the temperature. The design of this heat exchanger can maximize the heat exchange efficiency while reducing the water vapor in the flue gas and avoiding the formation of white smoke.

[0036] The inlet of the multi-media condenser 20 is directly connected to the flue gas outlet 12 of the absorption tower 10 through the first connecting pipe 21. This means that the flue gas treated by the absorption tower 10 directly enters the multi-media condenser 20 for preliminary cooling. The outlet of the multi-media condenser 20 is respectively connected to the inlet of the indoor condenser 81 and the outdoor condenser 82 through the second connecting pipe 22, and the subsequent flow direction of the flue gas is controlled by the reversing valve 43 to adapt to different operating conditions and requirements.

[0037] After the flue gas passes through the multi-media condenser 20, the temperature and water vapor content are reduced, but further treatment is still required to meet environmental emission standards. The reversing valve 43 selects to send the flue gas to the indoor condenser 81 or the outdoor condenser 82 according to the temperature and operation requirements of the phase separator 60, or prevents the flue gas from flowing to these two devices when further condensation is not required.

[0038] The indoor condenser 81 and the outdoor condenser 82 are connected to the inlet of the heat preservation storage tank 70 through the second heat exchange pipe 72, which means that the waste heat generated by them during the condensation work can be stored and recovered, thereby improving the overall energy efficiency. After the flue gas is further condensed by the indoor condenser 81 or the outdoor condenser 82, it enters the gas-liquid separator 41 through the third connecting pipeline 23 for gas-liquid separation. The separated liquid components are returned to the absorption tower 10 through the liquid storage tank 51 and the first liquid inlet 13 to form a cycle; and the gaseous components can be further processed by the heat exchanger 73 as needed, and then discharged into the atmosphere from the outlet of the cold air heat exchange section. The setting of the heat preservation storage tank 70 and the heat exchanger 73 ensures the effective utilization of waste heat and the final temperature control of the flue gas, thereby achieving the purpose of energy saving, emission reduction and environmental protection.

[0039] like Figure 1As shown, in order to monitor the heat energy exchange efficiency of the heat recovery condenser 30 , the carbon dioxide capture device for treating white smoke further includes a heat meter 31 arranged on the heat recovery condenser 30 .

[0040] like Figure 1 As shown, in order to adjust the supply amount of liquid flowing into the first liquid inlet 13 , a flow control valve 52 is connected between the liquid storage tank 51 and the first liquid inlet 13 .

[0041] like Figure 1 As shown, in order to be able to open and close the first connecting pipeline 21 , an on-off control valve 53 is provided on the first connecting pipeline 21 , and the on-off control valve 53 can open and close the first connecting pipeline 21 .

[0042] like Figure 1 As shown, the phase separator 60 includes an outer shell and an inner shell arranged inside the outer shell, a sandwich is formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the sandwich. In this way, the waste heat enters the sandwich through the outlet of the hot gas heat exchange section, so as to achieve the function of heat preservation or heating of the phase separator 60.

[0043] like Figure 1 As shown, in order to prevent the liquid from flowing back from the liquid storage tank 51 to the liquid outlet, a check valve 54 is connected between the liquid outlet and the liquid storage tank 51 .

[0044] like Figure 1 As shown, in order to provide kinetic energy to the liquid coming out of the liquid outlet 14, a pump body 64 is connected between the second liquid inlet 61 and the liquid outlet 14, so as to ensure continuous circulation of the fluid and stable pressure.

[0045] The carbon dioxide capture device for treating white smoke includes an absorption tower 10, on which a flue gas inlet 11, a flue gas outlet 12, a first liquid inlet 13 and a liquid outlet 14 are provided. The absorption tower 10 is the core component of the carbon dioxide capture device for treating white smoke. The principle is that flue gas containing carbon dioxide is introduced through the flue gas inlet 11, and the flue gas contacts the absorbent inside the absorption tower 10, and the absorbent absorbs the carbon dioxide in the flue gas, thereby achieving flue gas purification. The flue gas outlet 12 is used to discharge the flue gas that has been preliminarily treated, the first liquid inlet 13 is used to replenish the absorbent, and the liquid outlet 14 is used to discharge the absorbent that has absorbed carbon dioxide. The implementation effect is manifested in the effective capture of carbon dioxide in the flue gas and the reduction of greenhouse gas emissions. At the same time, through the setting of the liquid outlet 14, the recycling of the absorbent is facilitated, and the operating efficiency and economy of the device are improved. The application scenarios are mainly concentrated in industrial production processes, such as thermal power plants, chemical plants, etc. These places usually produce a large amount of flue gas containing carbon dioxide, which needs to be effectively treated to reduce the impact on the environment. The use process is that the flue gas enters the absorption tower 10 from the flue gas inlet 11, and after contacting with the absorbent, the carbon dioxide is absorbed, and the purified flue gas is discharged from the flue gas outlet 12, while the absorbent that absorbs the carbon dioxide is discharged from the liquid outlet 14 for subsequent treatment.

[0046] The inlet of the multi-media condenser 20 is connected to the flue gas outlet 12 through the first connecting pipe 21. The function of the multi-media condenser 20 is to exchange heat with the flue gas through a cooling medium (such as water or air), reduce the flue gas temperature, promote the condensation of water vapor in the flue gas, and reduce the generation of white smoke. The first connecting pipe 21 ensures that the flue gas flows smoothly from the flue gas outlet 12 of the absorption tower 10 into the multi-media condenser 20 for temperature regulation. The implementation effect is that the flue gas temperature is effectively reduced, the generation of white smoke is reduced, and the heat in the flue gas is recovered to improve energy utilization efficiency. The application scenarios include industrial facilities that need to handle high-temperature flue gas, such as steel plants, cement plants, etc. The flue gas temperature in these places is relatively high, and direct discharge will cause white smoke. The use of a multi-media condenser 20 can effectively solve this problem. The use process is that the flue gas enters the multi-media condenser 20 from the flue gas outlet 12 through the first connecting pipe 21, exchanges heat with the cooling medium, and after the flue gas temperature drops, it continues to flow from the outlet of the multi-media condenser 20 to the subsequent processing unit.

[0047] The inlet of the heat recovery condenser 30 is connected to the outlet of the multimedia condenser 20. The heat recovery condenser 30 further condenses the flue gas coming out of the multimedia condenser 20. The principle is to use a lower temperature cooling medium to further reduce the flue gas temperature, promote the condensation of the remaining water vapor in the flue gas, and recover the heat in the flue gas. The implementation effect is that the flue gas temperature is further reduced, the generation of white smoke is reduced, and the recovered heat can be used in other process processes to improve the overall energy utilization efficiency. The application scenarios include industrial facilities that need to further reduce the flue gas temperature and recover heat, such as power plants, chemical plants, etc. The flue gas temperature in these places is relatively high. The heat recovery condenser 30 can effectively reduce the flue gas temperature, and the heat is recovered for heating process water or other process processes that require heat. The use process is that the flue gas enters the heat recovery condenser 30 from the outlet of the multimedia condenser 20 through the connecting pipeline, and exchanges heat with the cooling medium. After the flue gas temperature is further reduced, it flows from the outlet of the heat recovery condenser 30 to the gas-liquid separator 41.

[0048] The gas-liquid separator 41 is arranged downstream of the heat recovery condenser 30 and is connected to the outlet of the heat recovery condenser 30. The function of the gas-liquid separator 41 is to separate the gaseous and liquid components in the flue gas. The principle is to use physical methods such as centrifugal force or gravity sedimentation to separate the droplets in the flue gas from the airflow. The implementation effect is that the liquid components in the flue gas are effectively separated, the droplet content in the flue gas emissions is reduced, and the cleanliness of the flue gas is improved. Application scenarios include industrial facilities that need to separate droplets in the flue gas, such as flue gas desulfurization and denitrification systems. These systems will produce droplets when processing flue gas. The use of a gas-liquid separator 41 can effectively separate the droplets and improve the emission quality of the flue gas. The use process is that the flue gas enters the gas-liquid separator 41 from the outlet of the heat recovery condenser 30, and the liquid droplets in the flue gas are separated from the air flow by physical methods such as centrifugal force or gravity sedimentation. The separated gas flows from the gas outlet of the gas-liquid separator 41 to the four-way valve 42, and the separated liquid components flow to the liquid storage tank 51.

[0049] The four-way valve 42 is connected to the gas-liquid separator 41, and the four-way valve 42 has a gas outlet and a liquid outlet. The function of the four-way valve 42 is to control the flow direction of the flue gas and liquid components. The principle is to separate and guide the flue gas and liquid components by changing the opening and closing state of the valve. The implementation effect is that the flow direction of the flue gas and liquid components can be flexibly controlled, and the operating flexibility and efficiency of the device can be improved. The application scenarios include industrial facilities that need to flexibly control the flow direction after gas-liquid separation, such as flue gas purification systems, waste liquid recovery systems, etc. When these systems process flue gas and waste liquid, they need to adjust the flow direction according to actual conditions. The use of the four-way valve 42 can achieve this requirement. The use process is that the four-way valve 42 guides the gas separated by the gas-liquid separator 41 to the heat exchanger 73 for further processing as needed, and guides the liquid component to the liquid storage tank 51 for storage or recovery.

[0050] The liquid storage tank 51 is arranged downstream of the four-way valve 42, and the liquid outlet is connected to the liquid storage tank 51, and the liquid storage tank 51 is connected to the first liquid inlet 13. The function of the liquid storage tank 51 is to store and recover the liquid components separated from the gas-liquid separator 41. The principle is to utilize the sealing and storage capacity of the liquid storage tank 51 to temporarily store the liquid components for subsequent treatment or recycling. The implementation effect is manifested in the ability to effectively store and recover liquid components, reduce resource waste, and improve the recycling rate of absorbents. Application scenarios include industrial facilities that need to store and recover liquid components, such as flue gas desulfurization and denitrification systems. These systems will produce liquid components when processing flue gas. The use of the liquid storage tank 51 can effectively store and recover these liquid components for subsequent treatment or recycling. The use process is that the liquid component separated from the gas-liquid separator 41 enters the liquid storage tank 51 through the connecting pipeline for storage. When the absorbent needs to be replenished, the liquid component in the liquid storage tank 51 is pumped to the first liquid inlet 13 of the absorption tower 10 through the pump body 64 to achieve the recycling of the absorbent.

[0051] The phase separator 60 is arranged on one side of the absorption tower 10, and is provided with a second liquid inlet 61, a rich liquid outlet 62 and a lean liquid outlet 63. The second liquid inlet 61 is connected to the liquid outlet 14, and the lean liquid outlet 63 is connected to the liquid storage tank 51. The function of the phase separator 60 is to phase separate the absorbent containing carbon dioxide. The principle is to use the difference in phase state of different substances under specific conditions to separate the rich liquid and the lean liquid in the absorbent. The implementation effect is manifested in that the rich liquid and the lean liquid in the absorbent can be effectively separated, the regeneration efficiency of the absorbent is improved, and the consumption of the absorbent is reduced. The application scenarios include industrial facilities that need to separate the rich liquid and the lean liquid in the absorbent, such as flue gas desulfurization and denitrification systems. These systems use absorbents when treating flue gas. The use of the phase separator 60 can effectively separate the rich liquid and the lean liquid in the absorbent, and improve the regeneration efficiency and recycling rate of the absorbent. The use process is that the absorbent coming out of the liquid outlet 14 of the absorption tower 10 is pumped to the second liquid inlet 61 of the phase separator 60 through the pump body 64, and the absorbent is phase separated inside the phase separator 60, the rich liquid is discharged from the rich liquid outlet 62, and the lean liquid is discharged from the lean liquid outlet 63 and enters the liquid storage tank 51 for storage or regeneration treatment.

[0052] The thermal insulation heat storage device 70 is arranged on one side of the heat recovery condenser 30, and the multi-media condenser 20 and the heat recovery condenser 30 are connected to the inlet of the thermal insulation heat storage device 70 through the first heat exchange tube 71. The function of the thermal insulation heat storage device 70 is to store and recover the heat recovered from the multi-media condenser 20 and the heat recovery condenser 30. The principle is to utilize the heat storage capacity and heat exchange capacity of the thermal insulation heat storage device 70 to store the recovered heat for subsequent use. The implementation effect is manifested in the ability to effectively store and recover heat, improve energy utilization efficiency, and reduce energy consumption. Application scenarios include industrial facilities that need to store and recover heat, such as power plants, chemical plants, etc. These places usually generate a large amount of waste heat. The use of the thermal insulation heat storage device 70 can effectively store and recover this heat for heating process water or other process processes that require heat. The heat recovered from the multi-media condenser 20 and the heat recovery condenser 30 enters the thermal insulation storage tank 70 through the first heat exchange tube 71 for storage. When the heat is needed, the heat in the thermal insulation storage tank 70 is transferred to the process requiring heat through the heat exchange pipeline.

[0053] The heat exchanger 73 is arranged downstream of the heat preservation heat storage 70. The heat exchanger 73 includes a hot gas heat exchange section and a cold gas heat exchange section connected to the hot gas heat exchange section. The inlet of the hot gas heat exchange section is connected to the outlet of the heat preservation heat storage 70, the outlet of the hot gas heat exchange section is connected to the phase separator 60, the inlet of the cold gas heat exchange section is connected to the gas outlet, and the outlet of the cold gas heat exchange section is connected to the outside. The function of the heat exchanger 73 is to use the heat stored in the heat preservation heat storage 70 to heat the gas. The principle is to transfer the heat stored in the heat preservation heat storage 70 to the gas through the heat exchange capacity of the hot gas heat exchange section and the cold gas heat exchange section to increase the temperature of the gas. The implementation effect is that the stored heat can be effectively used to heat the gas, improve energy utilization efficiency, and reduce energy consumption. Application scenarios include industrial facilities that need to heat gas, such as gas drying systems, gas preheating systems, etc. These systems need to heat gas when processing gas. The use of heat exchanger 73 can effectively utilize the stored heat to heat the gas, thereby improving energy efficiency and gas processing effects. The use process is that the heat stored in the heat preservation heat storage device 70 heats the gas through the hot gas heat exchange section. The heated gas flows from the outlet of the hot gas heat exchange section to the phase separator 60, while the unheated gas enters the heat exchanger 73 from the inlet of the cold gas heat exchange section for heating, and the heated gas is discharged into the atmosphere from the outlet of the cold gas heat exchange section.

[0054] The carbon dioxide capture device for processing white smoke also includes an indoor condenser 81 and an outdoor condenser 82 connected between the heat recovery condenser 30 and the gas-liquid separator 41. The inlet of the indoor condenser 81 and the inlet of the outdoor condenser 82 are connected to the outlet of the multi-media condenser 20 through the second connecting pipeline 22, and the outlet of the indoor condenser 81 and the outlet of the outdoor condenser 82 are respectively connected to the gas-liquid separator 41 through the third connecting pipeline 23. The function of the indoor condenser 81 and the outdoor condenser 82 is to further condense the flue gas. The principle is to use the different temperature conditions indoors and outdoors to further reduce the flue gas temperature through the cooling medium and promote the condensation of the remaining water vapor in the flue gas. The implementation effect is manifested in that the flue gas temperature is further reduced, the generation of white smoke is reduced, and the heat in the flue gas is recovered at the same time. The application scenarios include industrial facilities that need to further reduce the flue gas temperature and recover heat, such as power plants, chemical plants, etc. The flue gas temperature in these places is relatively high. The indoor condenser 81 and the outdoor condenser 82 can effectively reduce the flue gas temperature, and recover heat for heating process water or other process processes that require heat. The use process is that the flue gas coming out of the multi-media condenser 20 enters the indoor condenser 81 or the outdoor condenser 82 through the second connecting pipe 22. After the flue gas temperature is further reduced, it flows from the outlet of the indoor condenser 81 or the outdoor condenser 82 through the third connecting pipe 23 to the gas-liquid separator 41 for gas-liquid separation.

[0055] Both the indoor condenser 81 and the outdoor condenser 82 are connected to the inlet of the heat preservation storage tank 70 through the second heat exchange tube 72. The function of the indoor condenser 81 and the outdoor condenser 82 is to further condense the flue gas. The principle is to use the different temperature conditions indoors and outdoors to further reduce the flue gas temperature through the cooling medium and promote the condensation of the remaining water vapor in the flue gas. The function of the second heat exchange tube 72 is to transfer the heat recovered by the indoor condenser 81 and the outdoor condenser 82 to the heat preservation storage tank 70 for storage. The implementation effect is that it can effectively recover and store heat, improve energy utilization efficiency, and reduce energy consumption. Application scenarios include industrial facilities that need to further reduce the flue gas temperature and recover heat, such as power plants, chemical plants, etc. The flue gas temperature in these places is relatively high. The indoor condenser 81 and the outdoor condenser 82 can effectively reduce the flue gas temperature. At the same time, the recovered heat is transferred to the heat preservation storage tank 70 through the second heat exchange tube 72 for storage, which is used to heat process water or other process processes that require heat. The heat recovered from the indoor condenser 81 and the outdoor condenser 82 enters the thermal insulation storage tank 70 through the second heat exchange pipe 72 for storage. When the heat is needed, the heat in the thermal insulation storage tank 70 is transferred to the process requiring heat through the heat exchange pipeline.

[0056] A reversing valve 43 is connected between the second connecting pipeline 22 and the outlet of the multimedia condenser 20. The reversing valve 43 has a first working position in which the outlet of the multimedia condenser 20 is connected to the inlet of the indoor condenser 81, a second working position in which the outlet of the multimedia condenser 20 is connected to the inlet of the outdoor condenser 82, and a third working position in which the outlet of the multimedia condenser 20 is disconnected from the inlet of the indoor condenser 81 and the inlet of the outdoor condenser 82. The function of the reversing valve 43 is to control the flow direction of the flue gas. The principle is to control the flow of the flue gas to the indoor condenser 81 or the outdoor condenser 82 by changing the opening and closing state of the valve. The implementation effect is that the flow direction of the flue gas can be flexibly controlled, and the operation flexibility and efficiency of the device are improved. The application scenarios include industrial facilities that need to flexibly control the flow direction of the flue gas according to indoor and outdoor temperature conditions, such as power plants, chemical plants, etc. The flue gas temperature in these places is relatively high. The reversing valve 43 can flexibly control the flow of the flue gas to the indoor condenser 81 or the outdoor condenser 82, and further condensation and heat recovery of the flue gas can be carried out according to different temperature conditions. The use process is that the reversing valve 43 selectively directs the flue gas to the indoor condenser 81 or the outdoor condenser 82 according to the indoor and outdoor temperature conditions, so as to achieve further condensation and heat recovery of the flue gas.

[0057] The carbon dioxide capture device for processing white smoke also includes a heat meter 31 arranged on the heat recovery condenser 30. The function of the heat meter 31 is to monitor and measure the heat energy exchange efficiency of the heat recovery condenser 30. The principle is to use the measurement function of the heat meter 31 to monitor the heat energy exchange of the heat recovery condenser 30 in real time to ensure the operating efficiency of the device. The implementation effect is that the heat energy exchange efficiency can be monitored and controlled in real time, and the operating efficiency and economy of the device are improved. The application scenarios include industrial facilities that need to monitor and control the heat energy exchange efficiency, such as power plants, chemical plants, etc. The heat recovery condensers 30 in these places need to monitor and control the heat energy exchange efficiency in real time during operation. The use of the heat meter 31 can achieve this requirement and ensure the operating efficiency and economy of the device. The use process is that the heat meter 31 monitors the heat energy exchange of the heat recovery condenser 30 in real time. When the heat energy exchange efficiency is lower than the set value, the heat energy exchange efficiency is improved by adjusting the operating parameters of the heat recovery condenser 30 or the flow rate of the cooling medium to ensure the operating efficiency and economy of the device.

[0058] A flow control valve 52 is connected between the liquid storage tank 51 and the first liquid inlet 13. The function of the flow control valve 52 is to control the liquid flow between the liquid storage tank 51 and the absorption tower 10. The principle is to control the flow of the liquid by adjusting the opening of the valve to ensure the stable operation of the absorption tower 10. The implementation effect is that the liquid flow can be effectively controlled to improve the operating stability and economy of the device. Application scenarios include industrial facilities that need to control the flow of absorbents, such as flue gas desulfurization and denitrification systems. These systems need to control the flow of absorbents when treating flue gas. The use of flow control valves 52 can achieve this requirement and ensure the operating stability and economy of the device. The use process is that the flow control valve 52 adjusts the liquid flow between the liquid storage tank 51 and the first liquid inlet 13 according to the operating requirements of the absorption tower 10, ensuring the stable operation of the absorption tower 10, while reducing the consumption of absorbents and improving economy.

[0059] The first connecting pipeline 21 is provided with an on-off control valve 53, which can switch the first connecting pipeline 21 on and off. The function of the on-off control valve 53 is to control the on and off of the flue gas from the absorption tower 10 to the multi-media condenser 20. The principle is to control the flow of flue gas by changing the opening and closing state of the valve. The implementation effect is that the flow of flue gas can be flexibly controlled, and the operational flexibility and safety of the device can be improved. The application scenarios include industrial facilities that need to control the flow of flue gas, such as power plants, chemical plants, etc. The flue gas treatment systems in these places need to flexibly control the flow of flue gas according to operational requirements. The use of the on-off control valve 53 can achieve this requirement and improve the operational flexibility and safety of the device. The use process is that the on-off control valve 53 controls the on and off of the flue gas from the absorption tower 10 to the multi-media condenser 20 according to the operating state of the absorption tower 10 and the operating requirements of the multi-media condenser 20, ensuring the operational flexibility and safety of the device.

[0060] A check valve 54 is connected between the liquid outlet and the liquid storage tank 51. The function of the check valve 54 is to prevent the liquid from flowing back from the liquid storage tank 51 to the liquid outlet. The principle is to use the one-way flow characteristics of the check valve 54 to ensure that the liquid can only flow from the liquid outlet to the liquid storage tank 51, and cannot flow in the opposite direction. The implementation effect is that it can prevent the liquid from flowing back and improve the operating safety and stability of the device. The application scenarios include industrial facilities that need to prevent the liquid from flowing back, such as flue gas desulfurization and denitrification systems. These systems will produce liquid components when treating flue gas. The use of the check valve 54 can prevent the liquid from flowing back and improve the operating safety and stability of the device. The use process is that the check valve 54 ensures that the liquid can only flow in one direction during the process of the liquid flowing from the liquid outlet to the liquid storage tank 51, preventing the liquid from flowing back and improving the operating safety and stability of the device.

[0061] A pump body 64 is connected between the second liquid inlet 61 and the liquid outlet 14. The function of the pump body 64 is to provide kinetic energy for the liquid coming out of the liquid outlet 14. The principle is to provide sufficient kinetic energy for the liquid through the mechanical action of the pump body 64 to ensure that the liquid can flow smoothly from the liquid outlet 14 to the second liquid inlet 61. The implementation effect is that it can provide sufficient kinetic energy for the liquid, improve the fluidity of the liquid and the operating efficiency of the device. Application scenarios include industrial facilities that need to provide kinetic energy for the liquid, such as flue gas desulfurization and denitrification systems. These systems will produce liquid components when treating flue gas. The use of the pump body 64 can provide sufficient kinetic energy for the liquid, ensure the smooth flow of the liquid, and improve the operating efficiency of the device. The use process is that the pump body 64 provides sufficient kinetic energy for the liquid in the process of the liquid flowing from the liquid outlet 14 to the second liquid inlet 61, ensuring the smooth flow of the liquid and improving the operating efficiency of the device.

[0062] The phase separator 60 includes an outer shell and an inner shell arranged on the inner side of the outer shell, and an interlayer is formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the interlayer. The function of the phase separator 60 is to phase separate the absorbent containing carbon dioxide. The principle is to use the difference in phase state of different substances under specific conditions to separate the rich liquid and the lean liquid in the absorbent. The design of the interlayer can use the heat of the hot gas heat exchange section to insulate or heat the phase separator 60, ensuring the phase separation effect of the phase separator 60 in a low-temperature working environment. The implementation effect is that the rich liquid and the lean liquid in the absorbent can be effectively separated, the regeneration efficiency of the absorbent can be improved, and the consumption of the absorbent can be reduced. At the same time, the design of the interlayer can utilize waste heat to improve energy utilization efficiency. Application scenarios include industrial facilities that need to separate the rich liquid and the lean liquid in the absorbent, such as flue gas desulfurization and denitrification systems. These systems use absorbents when treating flue gas. The use of the phase separator 60 can effectively separate the rich liquid and the lean liquid in the absorbent, and improve the regeneration efficiency and recycling rate of the absorbent. The interlayer design can utilize waste heat and improve energy efficiency, and is suitable for occasions where phase separation is required in a low-temperature environment. The heat from the outlet of the hot gas heat exchange section is used to insulate or heat the phase separator 60 through the interlayer, ensuring the phase separation effect of the phase separator 60 in a low-temperature working environment and improving energy efficiency.

[0063] The carbon dioxide capture device for treating white smoke of the present application can not only solve the problem of white smoke polluting the atmosphere, but also solve the problem that the waste heat recovery equipment cannot effectively utilize the waste heat of white smoke. Through the arrangement of the absorption tower 10, the multi-media condenser 20, the heat recovery condenser 30, the gas-liquid separator 41, the four-way valve 42, the liquid storage tank 51, the phase separator 60, the heat preservation heat storage 70 and the heat exchanger 73, the efficient capture of carbon dioxide in the flue gas and the reduction of white smoke are achieved. At the same time, through the arrangement of the heat preservation heat storage 70 and the heat exchanger 73, the effective utilization of waste heat and the final temperature control of the flue gas are ensured, thereby achieving the purpose of energy saving, emission reduction and environmental protection. In addition, through the arrangement of the indoor condenser 81, the outdoor condenser 82, the reversing valve 43, the heat meter 31, the flow control valve 52, the on-off control valve 53, the check valve 54 and the pump body 64, the operation flexibility, safety and economy of the device are further improved, and it is suitable for the flue gas treatment needs in various industrial production processes.

[0064] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0065] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0066] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is 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. A carbon dioxide capture device for treating white smoke, characterized in that: include: An absorption tower (10), wherein the absorption tower (10) is provided with a flue gas inlet (11), a flue gas outlet (12), a first liquid inlet (13) and a liquid outlet (14); A multi-media condenser (20), wherein the inlet of the multi-media condenser (20) is connected to the flue gas outlet (12) via a first connecting pipeline (21); A heat recovery condenser (30), wherein an inlet of the heat recovery condenser (30) is connected to an outlet of the multimedia condenser (20); a gas-liquid separator (41), arranged downstream of the heat recovery condenser (30) and connected to the outlet of the heat recovery condenser (30); A four-way valve (42) connected to the gas-liquid separator (41), wherein the four-way valve (42) has a gas outlet and a liquid outlet; A liquid storage tank (51) is arranged downstream of the four-way valve (42), the liquid outlet is connected to the liquid storage tank (51), and the liquid storage tank (51) is connected to the first liquid inlet (13); A phase separator (60) is arranged on one side of the absorption tower (10), and is provided with a second liquid inlet (61), a rich liquid outlet (62) and a lean liquid outlet (63), wherein the second liquid inlet (61) is connected to the liquid outlet (14), and the lean liquid outlet (63) is connected to the liquid storage tank (51); A heat preservation heat storage device (70) is arranged on one side of the heat recovery condenser (30), and the multimedia condenser (20) and the heat recovery condenser (30) are both connected to the inlet of the heat preservation heat storage device (70) through a first heat exchange pipe (71); A heat exchanger (73), wherein the heat exchanger (73) is arranged downstream of the thermal insulation heat storage device (70), and the heat exchanger (73) comprises a hot air heat exchange section and a cold air heat exchange section connected to the hot air heat exchange section, wherein the inlet of the hot air heat exchange section is connected to the outlet of the thermal insulation heat storage device (70), the outlet of the hot air heat exchange section is connected to the phase separator (60), the inlet of the cold air heat exchange section is connected to the gas outlet, and the outlet of the cold air heat exchange section is connected to the outside.

2. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: The carbon dioxide capture device for treating white smoke further comprises an indoor condenser (81) and an outdoor condenser (82) connected between the heat recovery condenser (30) and the gas-liquid separator (41); the inlet of the indoor condenser (81) and the inlet of the outdoor condenser (82) are connected to the outlet of the multimedia condenser (20) via a second connecting pipeline (22); and the outlet of the indoor condenser (81) and the outlet of the outdoor condenser (82) are respectively connected to the gas-liquid separator (41) via a third connecting pipeline (23).

3. The carbon dioxide capture device for treating white smoke according to claim 2, characterized in that: The indoor condenser (81) and the outdoor condenser (82) are both connected to the inlet of the heat preservation heat storage device (70) via a second heat exchange pipe (72).

4. The carbon dioxide capture device for treating white smoke according to claim 2, characterized in that: A reversing valve (43) is connected between the second connecting pipeline (22) and the outlet of the multimedia condenser (20), and the reversing valve (43) has a first working position in which the outlet of the multimedia condenser (20) is connected to the inlet of the indoor condenser (81), a second working position in which the outlet of the multimedia condenser (20) is connected to the inlet of the outdoor condenser (82), and a third working position in which the outlet of the multimedia condenser (20) is disconnected from the inlet of the indoor condenser (81) and the inlet of the outdoor condenser (82).

5. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: The carbon dioxide capture device for processing white smoke further comprises a heat meter (31) arranged on the heat recovery condenser (30).

6. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: A flow control valve (52) is connected between the liquid storage tank (51) and the first liquid inlet (13).

7. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: An on-off control valve (53) is provided on the first connecting pipeline (21), and the on-off control valve (53) is capable of opening and closing the first connecting pipeline (21).

8. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: The phase separator (60) comprises an outer shell and an inner shell arranged inside the outer shell, a sandwich is formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the sandwich.

9. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: A check valve (54) is connected between the liquid outlet and the liquid storage tank (51).

10. The carbon dioxide capture device for treating white smoke according to claim 1, characterized in that: A pump body (64) is connected between the second liquid inlet (61) and the liquid outlet (14).

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