Carbon dioxide capture device for treating white smoke

Abstract

This invention provides a carbon dioxide capture device for treating white smoke, comprising: an absorption tower; a multi-media condenser; a heat recovery condenser; a gas-liquid separator disposed downstream of the heat recovery condenser and connected to the outlet of the heat recovery condenser; a four-way valve connected to the gas-liquid separator; a storage tank disposed downstream of the four-way valve, with its liquid outlet connected to the storage tank and the storage tank connected to a first liquid inlet; a phase separator disposed on one side of the absorption tower, with its lean liquid outlet connected to the storage tank; an insulated heat storage tank disposed on one side of the heat recovery condenser, wherein both the multi-media condenser and the heat recovery condenser are connected to the inlet of the insulated heat storage tank via a first heat exchange pipe; and a heat exchanger disposed downstream of the insulated storage tank, the heat exchanger comprising a hot gas heat exchange section and a cold gas heat exchange section connected to the hot gas heat exchange section. The technical solution of this application effectively solves the problem in related technologies where waste heat recovery equipment cannot effectively utilize the waste heat from white smoke.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide capture, and more specifically, to a carbon dioxide capture device for treating white smoke. Background Technology

[0002] Carbon dioxide capture devices for treating white smoke typically include an absorption tower. When the flue gas is discharged, the absorption tower carries a small amount of absorbent (such as an amino acid absorbent like MEA) with it. If these substances evaporate or condense rapidly in the air, they will form white smoke.

[0003] Directly emitting white smoke will cause air pollution on the one hand, and fail to fully consider the characteristics of waste heat, such as temperature level and availability, resulting in waste heat recovery equipment being unable to effectively utilize the waste heat. Summary of the Invention

[0004] The main objective of this invention is to provide a carbon dioxide capture device for treating white smoke, thereby solving the problem that waste heat recovery devices in related technologies cannot effectively utilize the waste heat of white smoke.

[0005] To achieve the above objectives, the present invention provides a carbon dioxide capture device for treating white smoke, comprising: an absorption tower having a flue gas inlet, a flue gas outlet, a first liquid inlet, and a liquid outlet; a multi-media condenser having its inlet connected to the flue gas outlet via a first connecting pipe; a heat recovery condenser having its inlet connected to the outlet of the multi-media condenser; a gas-liquid separator located downstream of the heat recovery condenser and connected to its outlet; a four-way valve connected to the gas-liquid separator, the four-way valve having a gas outlet and a liquid outlet; and a storage tank located downstream of the four-way valve, the liquid outlet connected to the storage tank, the storage tank being connected to the first liquid inlet. A phase separator is located on one side of the absorption tower. The phase separator has a second inlet, a rich liquid outlet, and a lean liquid outlet. The second inlet is connected to the outlet, and the lean liquid outlet is connected to the storage tank. An insulated heat storage unit is located on one side of the heat recovery condenser. Both the multi-media condenser and the heat recovery condenser are connected to the inlet of the insulated heat storage unit via a first heat exchange tube. A heat exchanger is located downstream of the insulated liquid. 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 insulated heat storage unit, and 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 connected to the gas-liquid separator through a third connecting pipe.

[0007] Furthermore, both the indoor and outdoor condensers are connected to the inlet of the insulated heat storage unit via a second heat exchange pipe.

[0008] Furthermore, a reversing valve is connected between the second connecting pipe and the outlet of the multi-media condenser. The reversing valve has a first working position that connects the outlet of the multi-media condenser to the inlet of the indoor condenser, a second working position that connects the outlet of the multi-media condenser to the inlet of the outdoor condenser, and a third working position that disconnects the outlet of the multi-media condenser from both the inlet of the indoor condenser and the inlet of the outdoor condenser.

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

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

[0011] Furthermore, an on / off control valve is installed on the first connecting pipeline, which can switch the first connecting pipeline on and off.

[0012] Furthermore, the phase separator includes an outer shell and an inner shell disposed inside the outer shell, with a sandwich layer formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the sandwich layer.

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

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

[0015] The carbon dioxide capture device for treating white smoke, using the technical solution of this invention, includes: an absorption tower, a multi-media condenser, a heat recovery condenser, a gas-liquid separator, a four-way valve, a storage tank, a phase separator, an insulated heat storage tank, and a heat exchanger. The absorption tower is equipped 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 via a first connecting pipe. The inlet of the heat recovery condenser is connected to the outlet of the multi-media condenser. The gas-liquid separator is located downstream of the heat recovery condenser and is connected to its outlet. The four-way valve is connected to the gas-liquid separator and has a gas outlet and a liquid outlet. The storage tank is located downstream of the four-way valve, with the liquid outlet connected to it, and the storage tank connected to the first liquid inlet. The phase separator is located on one side of the absorption tower and is equipped 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 storage tank. The insulated heat storage tank is located on one side of the heat recovery condenser, and both the multi-media condenser and the heat recovery condenser are connected to the inlet of the insulated heat storage tank via a first heat exchange tube. The heat exchanger is located downstream of the insulated liquid and includes a hot gas heat exchange section and a cold gas heat exchange section connected to it. The inlet of the hot gas heat exchange section is connected to the outlet of the insulated heat storage tank, and 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 exiting the absorption tower first enters the multi-media condenser, where its temperature is lowered through heat exchange with the cooling medium, and some water vapor condenses into liquid. The heat recovery condenser further condenses the flue gas exiting the multi-media condenser. The insulated heat storage tank can recover more heat energy generated by the multi-media condenser and the heat recovery condenser. This heat energy can be used to provide insulation or heat tracing for the phase separator in low-temperature operating environments to ensure the phase separation effect of the phase separator, effectively utilizing the waste heat of the white smoke. Furthermore, because 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 decreased, thereby reducing the generation of white smoke. This allows the flue gas to meet environmental protection requirements to be 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 this application not only solves the problem of white smoke pollution of the atmosphere, but also solves the problem that waste heat recovery equipment cannot effectively utilize the waste heat from white smoke. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

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

[0018] The above figures 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-media condenser; 21. First connecting pipe; 22. Second connecting pipe; 23. Third connecting pipe;

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

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

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

[0024] 60. Phase separator; 61. Second inlet; 62. Rich solution outlet; 63. Lean solution outlet; 64. Pump body;

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

[0026] 81. Indoor condenser; 82. Outdoor condenser. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0030] like Figure 1 As shown, this application provides a carbon dioxide capture device for treating white smoke. 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, an insulated heat storage tank 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 via a first connecting pipe 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 located downstream of the heat recovery condenser 30 and connected to the outlet of the heat recovery condenser 30. The four-way valve 42 is connected to the gas-liquid separator 41 and has a gas outlet and a liquid outlet. A liquid storage tank 51 is located downstream of the four-way valve 42, with the liquid outlet connected to the storage tank 51. The storage tank 51 is connected to the first liquid inlet 13. A phase separator 60 is located on one side of the absorption tower 10. The phase separator 60 is equipped 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 storage tank 51. An insulated heat storage unit 70 is located on one side of the heat recovery condenser 30, and both the multi-media condenser 20 and the heat recovery condenser 30 are connected to the inlet of the insulated heat storage unit 70 through a first heat exchange pipe 71. The heat exchanger 73 is located downstream of the heat-insulating 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 heat-insulating storage liquid 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 carbon dioxide capture device for treating white smoke, using the technical solution of this embodiment, 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, an insulated heat storage tank 70, and a heat exchanger 73. The flue gas exiting the absorption tower 10 first enters the multi-media condenser 20, where it exchanges heat with the cooling medium (such as cooling water or air) to lower its temperature, causing some water vapor to condense into liquid. The heat recovery condenser 30 further condenses the flue gas exiting the multi-media condenser 20. The insulated heat storage tank 70 recovers more heat energy generated by the multi-media condenser 20 and the heat recovery condenser 30. This heat energy can be used to provide insulation or heat tracing for the phase separator 60 in low-temperature operating environments to ensure the phase separation effect of the phase separator 60, effectively utilizing the waste heat of the white smoke. Furthermore, because 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 decreased, thereby reducing the generation of white smoke. This allows the flue gas to meet environmental protection requirements and be 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 this embodiment not only solves the problem of white smoke pollution of the atmosphere but also addresses the issue of waste heat recovery equipment being unable to effectively utilize the waste heat from white smoke. The aforementioned gas-liquid separator 41 can separate gaseous and liquid states in the flue gas.

[0032] like Figure 1 As shown, the carbon dioxide capture device for treating 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 via a second connecting pipe 22, and the outlet of the indoor condenser 81 and the outlet of the outdoor condenser 82 are connected to the gas-liquid separator 41 via a third connecting pipe 23. Depending on the temperature and operating requirements of the phase separator 60, either 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 operating requirements of the phase separator 60, avoiding heat loss during transmission and storage.

[0033] like Figure 1 As shown, to effectively avoid heat loss during transmission and storage, both the indoor condenser 81 and the outdoor condenser 82 are connected to the inlet of the insulated heat storage unit 70 via a second heat exchange pipe 72. The insulated heat storage unit 70 can store thermal energy and recover thermal energy from the multi-media condenser 20, the heat recovery condenser 30, the indoor condenser 81, and the outdoor condenser 82, so as to release thermal energy when needed and improve 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 splitter 60, a reversing valve 43 is connected between the second connecting pipe 22 and the outlet of the multi-media condenser 20. The reversing valve 43 has a first working position that connects the outlet of the multi-media condenser 20 to the inlet of the indoor condenser 81, a second working position that connects the outlet of the multi-media condenser 20 to 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] Multi-medium condensers 20 are typically designed as shell-and-tube or plate heat exchangers, containing a large amount of cooling medium (such as cooling water or air). As the flue gas passes through the heat exchanger, it exchanges heat with the cooling medium, thereby reducing its temperature. This design maximizes heat exchange efficiency while minimizing water vapor in the flue gas, preventing 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 via 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 connected to the inlets of the indoor condenser 81 and the outdoor condenser 82 via 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, its temperature and water vapor content decrease, but further treatment is still required to meet environmental emission standards. The reversing valve 43 selects whether to send the flue gas to the indoor condenser 81 or the outdoor condenser 82, or prevents the flue gas from flowing to either device when further condensation is not required, based on the temperature and operating requirements of the phase separator 60.

[0038] Indoor condenser 81 and outdoor condenser 82 are connected to the inlet of insulated heat storage tank 70 via a second heat exchange pipe 72. This means that the waste heat generated during condensation can be stored and recovered, improving overall energy efficiency. After further condensation by indoor condenser 81 or outdoor condenser 82, the flue gas enters gas-liquid separator 41 through third connecting pipe 23 for gas-liquid separation. The separated liquid component returns to absorption tower 10 through storage tank 51 and first inlet 13, forming a cycle; while the gaseous component can be further processed by heat exchanger 73 as needed, and then discharged into the atmosphere from the outlet of cold air heat exchange section. The insulated heat storage tank 70 and heat exchanger 73 ensure the effective utilization of waste heat and the final temperature control of flue gas, thereby achieving the goals of energy saving, emission reduction, and environmental protection.

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

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

[0041] like Figure 1 As shown, in order to switch the first connecting pipe 21 on and off, a switch control valve 53 is provided on the first connecting pipe 21, which can switch the first connecting pipe 21 on and off.

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

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

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

[0045] The carbon dioxide capture device for treating white smoke includes an absorption tower 10, which is equipped with a flue gas inlet 11, a flue gas outlet 12, a first liquid inlet 13, and a liquid outlet 14. The absorption tower 10 is the core component of the carbon dioxide capture device for treating white smoke. Its principle is to introduce flue gas containing carbon dioxide through the flue gas inlet 11. Inside the absorption tower 10, the flue gas comes into contact with the absorbent, which absorbs the carbon dioxide from the flue gas, thereby purifying the flue gas. The flue gas outlet 12 is used to discharge the pre-treated flue gas, 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 the effective capture of carbon dioxide from the flue gas, reducing greenhouse gas emissions. Simultaneously, the liquid outlet 14 facilitates the recycling of the absorbent, improving the operating efficiency and economy of the device. Application scenarios are mainly concentrated in industrial production processes, such as thermal power plants and chemical plants, which typically generate large amounts of flue gas containing carbon dioxide, requiring effective treatment to reduce environmental impact. The process involves flue gas entering the absorption tower 10 through the flue gas inlet 11. After contacting the absorbent, carbon dioxide is absorbed, and the purified flue gas is discharged from the flue gas outlet 12. The absorbent that has absorbed carbon dioxide is discharged from the liquid outlet 14 for further treatment.

[0046] The inlet of the multi-media condenser 20 is connected to the flue gas outlet 12 via a 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), thereby reducing the flue gas temperature, promoting the condensation of water vapor in the flue gas, and reducing 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 effect is that the flue gas temperature is effectively reduced, the generation of white smoke is decreased, and heat in the flue gas is recovered, improving energy utilization efficiency. Application scenarios include industrial facilities that require the treatment of high-temperature flue gas, such as steel plants and cement plants. In these locations, the flue gas temperature is high, and direct emission would lead to white smoke. Using the multi-media condenser 20 can effectively solve this problem. The process involves the flue gas entering the multi-media condenser 20 from the flue gas outlet 12 through the first connecting pipe 21, exchanging heat with the cooling medium. After the flue gas temperature decreases, it continues to flow from the outlet of the multi-media condenser 20 to subsequent treatment units.

[0047] The inlet of the heat recovery condenser 30 is connected to the outlet of the multi-media condenser 20. The heat recovery condenser 30 further condenses the flue gas from the multi-media condenser 20. Its principle is to use a lower-temperature cooling medium to further reduce the flue gas temperature, promote the condensation of residual water vapor in the flue gas, and simultaneously recover heat from the flue gas. The effect is a further reduction in flue gas temperature, reduced white smoke production, and the recovered heat can be used in other processes, improving overall energy efficiency. Application scenarios include industrial facilities requiring further reduction of flue gas temperature and heat recovery, such as power plants and chemical plants. These locations have high flue gas temperatures, and the heat recovery condenser 30 can effectively reduce the flue gas temperature while recovering heat for heating process water or other heat-requiring processes. The process involves the flue gas entering the heat recovery condenser 30 from the outlet of the multi-media condenser 20 through a connecting pipeline, exchanging heat with the cooling medium. After further temperature reduction, the flue gas flows from the outlet of the heat recovery condenser 30 to the gas-liquid separator 41.

[0048] The gas-liquid separator 41 is located downstream of the heat recovery condenser 30 and 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. Its principle is to use physical methods such as centrifugal force or gravity settling to separate liquid droplets from the gas flow. The effect is that the liquid components in the flue gas are effectively separated, reducing the droplet content in the flue gas emissions and improving the cleanliness of the flue gas. Application scenarios include industrial facilities that require the separation of droplets from flue gas, such as flue gas desulfurization and denitrification systems. These systems generate droplets when treating flue gas; using the gas-liquid separator 41 can effectively separate the droplets and improve the emission quality of the flue gas. The process involves flue gas entering the gas-liquid separator 41 from the outlet of the heat recovery condenser 30. Through physical methods such as centrifugal force or gravity settling, liquid droplets in the flue gas are separated from the gas flow. The separated gas flows from the gas outlet of the gas-liquid separator 41 to the four-way valve 42, while the separated liquid component flows to the liquid storage tank 51.

[0049] The four-way valve 42 is connected to the gas-liquid separator 41, and has both a gas outlet and a liquid outlet. The function of the four-way valve 42 is to control the flow direction of flue gas and liquid components. Its principle is to achieve the separation and guidance of flue gas and liquid components by changing the opening and closing state of the valve. The effect is that it can flexibly control the flow direction of flue gas and liquid components, improving the operational flexibility and efficiency of the device. Application scenarios include industrial facilities that require flexible control of the flow direction after gas-liquid separation, such as flue gas purification systems and waste liquid recovery systems. These systems need to adjust the flow direction according to actual conditions when treating flue gas and waste liquid; the four-way valve 42 can meet this requirement. In operation, the four-way valve 42 guides the gas separated by the gas-liquid separator 41 to the heat exchanger 73 for further processing, while guiding the liquid components to the storage tank 51 for storage or recovery.

[0050] The liquid storage tank 51 is located downstream of the four-way valve 42, with the liquid outlet connected to it. The liquid storage tank 51 is also 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. Its principle is to utilize the sealing and storage capacity of the liquid storage tank 51 to temporarily store the liquid components for subsequent processing or recycling. The implementation effect is the effective storage and recovery of liquid components, reducing resource waste and improving the recycling rate of the absorbent. Application scenarios include industrial facilities requiring the storage and recovery of liquid components, such as flue gas desulfurization and denitrification systems. These systems generate liquid components during flue gas treatment, and the liquid storage tank 51 can effectively store and recover these liquid components, facilitating subsequent processing or recycling. The process involves the liquid components separated from the gas-liquid separator 41 entering the storage tank 51 through a connecting pipeline for storage. When the absorbent needs to be replenished, the liquid components in the storage tank 51 are pumped to the first inlet 13 of the absorption tower 10 through the pump body 64, thereby realizing the recycling of the absorbent.

[0051] Phase separator 60 is installed on one side of absorption tower 10. Phase separator 60 has a second inlet 61, a rich liquid outlet 62, and a lean liquid outlet 63. The second inlet 61 is connected to outlet 14, and the lean liquid outlet 63 is connected to storage tank 51. The function of phase separator 60 is to separate the absorbent containing carbon dioxide. Its principle is to utilize the difference in phase state of different substances under specific conditions to separate the rich and lean liquids in the absorbent. The effect is that it can effectively separate the rich and lean liquids in the absorbent, improve the regeneration efficiency of the absorbent, and reduce absorbent consumption. Application scenarios include industrial facilities that require the separation of rich and lean liquids in the absorbent, such as flue gas desulfurization and denitrification systems. These systems use absorbents when treating flue gas, and phase separator 60 can effectively separate the rich and lean liquids in the absorbent, improving the regeneration efficiency and recycling rate of the absorbent. The process involves the absorbent from the outlet 14 of the absorption tower 10 being pumped by the pump body 64 to the second inlet 61 of the phase separator 60. The absorbent undergoes phase separation inside the phase separator 60, with the rich liquid being discharged from the rich liquid outlet 62 and the lean liquid being discharged from the lean liquid outlet 63, and then entering the storage tank 51 for storage or regeneration.

[0052] The insulated heat storage unit 70 is located on one side of the heat recovery condenser 30, and both the multi-medium condenser 20 and the heat recovery condenser 30 are connected to the inlet of the insulated heat storage unit 70 via a first heat exchange pipe 71. The function of the insulated heat storage unit 70 is to store and recover heat recovered from the multi-medium condenser 20 and the heat recovery condenser 30. Its principle is to utilize the heat storage and heat exchange capabilities of the insulated heat storage unit 70 to store the recovered heat for subsequent use. The implementation effect is the effective storage and recovery of heat, improving energy utilization efficiency and reducing energy consumption. Application scenarios include industrial facilities that require heat storage and recovery, such as power plants and chemical plants. These locations typically generate large amounts of waste heat, and the insulated heat storage unit 70 can effectively store and recover this heat for heating process water or other heat-requiring processes. The process involves the heat recovered from the multi-medium condenser 20 and the heat recovery condenser 30 entering the insulated heat storage tank 70 through the first heat exchange pipe 71 for storage. When heat is needed, the heat in the insulated heat storage tank 70 is transferred to the process that requires heat through the heat exchange pipeline.

[0053] Heat exchanger 73 is located downstream of the insulated heat storage tank 70. 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 insulated heat storage tank 70, and 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 heat exchanger 73 is to heat the gas using the heat stored in the insulated heat storage tank 70. Its principle is to transfer the heat stored in the insulated heat storage tank 70 to the gas through the heat exchange capacity of the hot gas heat exchange section and the cold gas heat exchange section, thereby increasing the gas temperature. The effect is that it can effectively utilize the stored heat to heat the gas, improve energy utilization efficiency, and reduce energy consumption. Application scenarios include industrial facilities that require gas heating, such as gas drying systems and gas preheating systems. These systems need to heat the gas during processing. Using heat exchanger 73 can effectively utilize the stored heat to heat the gas, improving energy efficiency and gas processing effect. The process involves the heat stored in the insulated heat storage tank 70 heating 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. The heated gas is then discharged into the atmosphere from the outlet of the cold gas heat exchange section.

[0054] The carbon dioxide capture device for treating 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 via a second connecting pipe 22. The outlet of the indoor condenser 81 and the outlet of the outdoor condenser 82 are connected to the gas-liquid separator 41 via a third connecting pipe 23. The function of the indoor condenser 81 and the outdoor condenser 82 is to further condense the flue gas. The principle is to utilize the different temperature conditions indoors and outdoors, and further reduce the flue gas temperature through a cooling medium, promoting the condensation of residual water vapor in the flue gas. The effect is that the flue gas temperature is further reduced, the generation of white smoke is reduced, and heat in the flue gas is recovered at the same time. Application scenarios include industrial facilities that require further reduction of flue gas temperature and recovery of heat, such as power plants and chemical plants. 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 at the same time recover heat for heating process water or other processes that require heat. The process involves the flue gas from the multi-media condenser 20 entering the indoor condenser 81 or 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 outdoor condenser 82 to the gas-liquid separator 41 through the third connecting pipe 23 for gas-liquid separation.

[0055] Both the indoor condenser 81 and the outdoor condenser 82 are connected to the inlet of the insulated heat storage tank 70 via the second heat exchange pipe 72. The function of the indoor condenser 81 and the outdoor condenser 82 is to further condense the flue gas. This is achieved by utilizing the different temperature conditions indoors and outdoors, and using a cooling medium to further reduce the flue gas temperature, promoting the condensation of residual water vapor in the flue gas. The function of the second heat exchange pipe 72 is to transfer the heat recovered by the indoor condenser 81 and the outdoor condenser 82 to the insulated heat storage tank 70 for storage. The implementation effect is the effective recovery and storage of heat, improving energy utilization efficiency and reducing energy consumption. Application scenarios include industrial facilities that require further reduction of flue gas temperature and recovery of heat, such as power plants and chemical plants. In these locations, the flue gas temperature is relatively high. The indoor condenser 81 and the outdoor condenser 82 can effectively reduce the flue gas temperature, while the recovered heat is transferred to the insulated heat storage tank 70 via the second heat exchange pipe 72 for storage, used to heat process water or other processes requiring heat. The process involves the heat recovered from the indoor condenser 81 and the outdoor condenser 82 entering the insulated heat storage tank 70 through the second heat exchange pipe 72 for storage. When heat is needed, the heat in the insulated heat storage tank 70 is transferred to the process that requires heat through the heat exchange pipe.

[0056] A reversing valve 43 is connected between the second connecting pipe 22 and the outlet of the multi-media condenser 20. The reversing valve 43 has a first working position that connects the outlet of the multi-media condenser 20 to the inlet of the indoor condenser 81; a second working position that connects the outlet of the multi-media condenser 20 to 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 inlets of the indoor condenser 81 and the outdoor condenser 82. The function of the reversing valve 43 is to control the flow direction of the flue gas. Its principle is to control the flow of flue gas to either the indoor condenser 81 or the outdoor condenser 82 by changing the opening and closing state of the valve. The effect is that it allows for flexible control of the flue gas flow direction, improving the operational flexibility and efficiency of the device. Application scenarios include industrial facilities that require flexible control of flue gas flow direction based on indoor and outdoor temperature conditions, such as power plants and chemical plants. In these locations, the flue gas temperature is high, and the reversing valve 43 can flexibly control the flow of flue gas to either the indoor condenser 81 or the outdoor condenser 82, allowing for further condensation and heat recovery of the flue gas according to different temperature conditions. The process involves the reversing valve 43 selectively directing the flue gas to the indoor condenser 81 or the outdoor condenser 82 based on the indoor and outdoor temperature conditions, thereby achieving further condensation and heat recovery of the flue gas.

[0057] The carbon dioxide capture device for treating white smoke also includes a heat meter 31 installed on the heat recovery condenser 30. The function of the heat meter 31 is to monitor and measure the heat exchange efficiency of the heat recovery condenser 30. Its principle is to utilize the measurement function of the heat meter 31 to monitor the heat exchange status of the heat recovery condenser 30 in real time, ensuring the operating efficiency of the device. The implementation effect is the ability to monitor and control heat exchange efficiency in real time, improving the operating efficiency and economy of the device. Application scenarios include industrial facilities that require monitoring and control of heat exchange efficiency, such as power plants and chemical plants. In these locations, the heat recovery condenser 30 needs real-time monitoring and control of its heat exchange efficiency during operation. The heat meter 31 can meet this requirement, ensuring the operating efficiency and economy of the device. The process involves the heat meter 31 monitoring the heat exchange status of the heat recovery condenser 30 in real time. When the heat exchange efficiency is lower than the set value, the operating parameters of the heat recovery condenser 30 or the flow rate of the cooling medium are adjusted to improve the heat exchange efficiency, ensuring the operating efficiency and economy of the device.

[0058] A flow control valve 52 is connected between the storage tank 51 and the first inlet 13. The function of the flow control valve 52 is to control the liquid flow between the storage tank 51 and the absorption tower 10. Its principle is to control the liquid flow by adjusting the valve opening, ensuring the stable operation of the absorption tower 10. The effect is that it effectively controls the liquid flow, improving the operational stability and economy of the device. Application scenarios include industrial facilities that require control of absorbent flow, such as flue gas desulfurization and denitrification systems. These systems need to control the absorbent flow when treating flue gas, and the flow control valve 52 can meet this requirement, ensuring the operational stability and economy of the device. The process involves the flow control valve 52 adjusting the liquid flow between the storage tank 51 and the first inlet 13 according to the operational requirements of the absorption tower 10, ensuring the stable operation of the absorption tower 10 while reducing absorbent consumption and improving economy.

[0059] A shut-off control valve 53 is installed on the first connecting pipe 21, which can switch the first connecting pipe 21 on and off. The function of the shut-off control valve 53 is to control the flow of flue gas from the absorption tower 10 to the multi-media condenser 20. Its principle is to control the flow of flue gas by changing the opening and closing state of the valve. The effect is that it can flexibly control the flow of flue gas, improving the operational flexibility and safety of the device. Application scenarios include industrial facilities that require flue gas flow control, such as power plants and chemical plants. The flue gas treatment system in these places needs to flexibly control the flow of flue gas according to operational needs. The shut-off control valve 53 can meet this need, improving the operational flexibility and safety of the device. The usage process is that the shut-off control valve 53 controls the flow of flue gas from the absorption tower 10 to the multi-media condenser 20 according to the operating status of the absorption tower 10 and the operating needs 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 storage tank 51. The function of the check valve 54 is to prevent liquid from flowing back from the storage tank 51 to the liquid outlet. Its principle is based on the unidirectional flow characteristic of the check valve 54, ensuring that liquid can only flow from the liquid outlet to the storage tank 51 and cannot flow in the opposite direction. This effectively prevents liquid backflow, improving the operational safety and stability of the device. Application scenarios include industrial facilities that require prevention of liquid backflow, such as flue gas desulfurization and denitrification systems. These systems generate liquid components when treating flue gas; using the check valve 54 can prevent liquid backflow and improve the operational safety and stability of the device. In operation, the check valve 54 ensures that the liquid flows only in one direction from the liquid outlet to the storage tank 51, preventing liquid backflow and improving the operational safety and stability of the device.

[0061] A pump body 64 is connected between the second inlet 61 and the outlet 14. The function of the pump body 64 is to provide kinetic energy to the liquid exiting the outlet 14. The principle is that the mechanical action of the pump body 64 provides sufficient kinetic energy to the liquid, ensuring that the liquid can flow smoothly from the outlet 14 to the second inlet 61. The effect is that it provides sufficient kinetic energy to the liquid, improving the liquid's fluidity and the operating efficiency of the device. Application scenarios include industrial facilities that require kinetic energy to liquids, such as flue gas desulfurization and denitrification systems. These systems generate liquid components when treating flue gas. Using the pump body 64 can provide sufficient kinetic energy to the liquid, ensuring its smooth flow and improving the operating efficiency of the device. The process involves the pump body 64 providing sufficient kinetic energy to the liquid as it flows from the outlet 14 to the second inlet 61, ensuring smooth flow and improving the operating efficiency of the device.

[0062] Phase separator 60 includes an outer shell and an inner shell disposed inside the outer shell, forming a sandwich between the outer and inner shells. The outlet of the hot gas heat exchange section is connected to the sandwich. The function of phase separator 60 is to separate the phases of absorbent containing carbon dioxide. Its principle is to utilize the difference in phase state of different substances under specific conditions to separate the rich and lean liquids in the absorbent. The sandwich design can utilize the heat from 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 low-temperature operating environments. The implementation effect is that it can effectively separate the rich and lean liquids in the absorbent, improve the regeneration efficiency of the absorbent, and reduce the consumption of absorbent. At the same time, the sandwich design can utilize waste heat to improve energy utilization efficiency. Application scenarios include industrial facilities that require the separation of rich and lean liquids in the absorbent, such as flue gas desulfurization and denitrification systems. These systems use absorbents when treating flue gas, and the phase separator 60 can effectively separate the rich and lean liquids in the absorbent, improving the regeneration efficiency and recycling rate of the absorbent. The sandwich design utilizes waste heat to improve energy efficiency and is suitable for applications requiring phase separation at low temperatures. In operation, heat from the outlet of the hot gas heat exchange section is used to insulate or heat-traceive the phase separator 60 through the sandwich layer, ensuring effective phase separation in low-temperature operating environments while simultaneously improving energy efficiency.

[0063] The carbon dioxide capture device for treating white smoke disclosed in this application not only solves the problem of white smoke pollution of the atmosphere, but also addresses the issue of waste heat recovery equipment being unable to effectively utilize the waste heat from white smoke. Through the arrangement of 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, an insulated heat storage tank 70, and a heat exchanger 73, efficient capture of carbon dioxide and reduction of white smoke from the flue gas are achieved. Simultaneously, the insulated heat storage tank 70 and the heat exchanger 73 ensure the effective utilization of waste heat and final temperature control of the flue gas, thereby achieving energy conservation, emission reduction, and environmental protection. Furthermore, the inclusion of an indoor condenser 81, an outdoor condenser 82, a reversing valve 43, a heat meter 31, a flow control valve 52, an on / off control valve 53, a check valve 54, and a pump body 64 further enhances the operational flexibility, safety, and economy of the device, making it suitable for flue gas treatment needs in various industrial production processes.

[0064] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

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

[0066] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A carbon dioxide capture device for treating white smoke, characterized in that, include: An 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) is provided, the inlet of which is connected to the flue gas outlet (12) via a first connecting pipe (21). A heat recovery condenser (30) is provided, the inlet of which is connected to the outlet of the multi-media condenser (20). A gas-liquid separator (41) is disposed downstream of the heat recovery condenser (30) and connected to the outlet of the heat recovery condenser (30); A four-way valve (42) is connected to the gas-liquid separator (41), the four-way valve (42) having a gas outlet and a liquid outlet; A liquid storage tank (51) is located 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 provided on one side of the absorption tower (10). 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 storage tank (51). The heat storage tank (70) is disposed on one side of the heat recovery condenser (30), and both the multi-medium condenser (20) and the heat recovery condenser (30) are connected to the inlet of the heat storage tank (70) through the first heat exchange tube (71). A heat exchanger (73) is located downstream of the thermal insulation storage tank (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 thermal insulation storage tank (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. The outlet of the cold gas heat exchange section is connected to the outside. The phase splitter (60) includes an outer shell and an inner shell disposed inside the outer shell, with a sandwich layer formed between the outer shell and the inner shell, and the outlet of the hot gas heat exchange section is connected to the sandwich layer.

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 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 a second connecting pipe (22). 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 a third connecting pipe (23).

3. The carbon dioxide capture device for treating white smoke according to claim 2, characterized in that, Both the indoor condenser (81) and the outdoor condenser (82) are connected to the inlet of the insulated heat storage unit (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 pipe (22) and the outlet of the multi-media condenser (20). The reversing valve (43) has a first working position that connects the outlet of the multi-media condenser (20) to the inlet of the indoor condenser (81), a second working position that connects the outlet of the multi-media condenser (20) to 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).

5. 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 also includes a heat meter (31) installed 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, The first connecting pipe (21) is provided with an on / off control valve (53), which can switch the first connecting pipe (21) on / off.

8. 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).

9. 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 inlet (61) and the outlet (14).

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