Adsorption and desorption integrated reaction device for CO2 capture
By using a rotatable heating body and agitating part in the CO2 capture device, the problem of uneven heating is solved, more efficient CO2 capture and lower energy consumption operation are achieved, and the overall performance of the device is improved.
Patent Information
- Application Number
- CN202422323410.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The existing CO2 capture device based on the solid adsorbent method has uneven heating, resulting in a problem that the CO2 capture capacity is reduced.
The rotatable heating body and agitating part are used to drive the heating body and agitating part to rotate together by rotating the motor to avoid local heat concentration of solid adsorbed materials, ensure uniform heat transfer, and real-time monitoring of temperature with the thermocouple to achieve uniform heating and agitating.
It improves the CO2 capture capability of solid adsorption materials, enhances the uniformity of adsorption and desorption, reduces the system's operating energy consumption, and improves the overall operating efficiency of the device.
Smart Images
Figure CN223170643U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of CO2 capture, in particular to an integrated adsorption and desorption reaction device for CO2 capture. Background Art
[0002] Under the urgent situation of global response to climate change, controlling carbon dioxide emissions has become an important issue. In particular, a large amount of flue gas generated during the energy production process is one of the main sources of carbon dioxide emissions. At present, flue gas carbon dioxide capture technologies mainly include chemical absorption method, physical adsorption method, membrane separation method, solid adsorbent method, etc. Among them, the solid adsorbent method has the advantages of high adsorption capacity, low regeneration energy consumption, simple operation, etc., and is a flue gas CO2 capture technology with development prospects. However, in the existing technology based on the solid adsorbent method, the heating element for heating the solid adsorbent is generally placed flat on one side of the device, which will cause excessive heat concentration on the solid adsorbent near the heating element locally, that is, the heat distribution of the solid adsorbent at different positions is different. This uneven heating condition directly leads to different ability levels of the solid adsorbent in the process of adsorbing and desorbing carbon dioxide, and further directly affects the CO2 capture ability of the device. Therefore, an integrated adsorption and desorption reaction device for CO2 capture is provided to solve the above problems. Summary of the Utility Model
[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an integrated adsorption and desorption reaction device for CO2 capture, which solves the problem that the existing CO2 capture device based on the solid adsorbent method has uneven heating when heating the solid adsorbent, thus affecting the CO2 capture ability.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions:
[0005] An integrated adsorption and desorption reaction device for CO2 capture, including an inlet gas pipeline, an adsorption and desorption integration mechanism, and an outlet gas pipeline. The inlet gas pipeline is communicated with the inlet of the adsorption and desorption integration mechanism, and the outlet gas pipeline is communicated with the outlet of the adsorption and desorption integration mechanism;
[0006] The adsorption and desorption integration mechanism includes a shell, an inner cavity for placing solid adsorption materials, and a heating device placed inside the inner cavity. The inner cavity forms a flue gas flow channel with the inlet gas pipeline and the outlet gas pipeline, so that the flue gas in the inlet gas pipeline flows through the inner cavity to the outlet gas pipeline;
[0007] The heating device includes a rotatable heating body and a stirring part arranged on the heating body. The heating device is used to heat the solid adsorption materials to the required adsorption temperature and desorption temperature.
[0008] Further, the heating body is connected to a rotating motor, which is arranged outside the housing and externally connected to the heating body to drive the heating body to rotate.
[0009] Further, the stirring part includes a plurality of rake teeth, which are evenly spaced on the surface of the heating body.
[0010] Further, the spacing between the rake teeth is 5 - 10 cm, and / or the length of the rake teeth is 5 - 10 cm, and / or the inclination angle of the rake teeth connected to the heating body is 45° - 60°.
[0011] Further, a thermocouple is provided inside the inner cavity for real-time monitoring of the temperature of the solid adsorption material in the inner cavity.
[0012] Further, a first partition and a second partition are arranged inside the housing across the flue gas flow path. The first partition is located on the side close to the inlet gas pipeline and is fixedly sealed with the inner wall of the housing. The second partition is located on the side close to the outlet gas pipeline and is fixedly sealed with the inner wall of the housing;
[0013] The inner cavity is surrounded by the first partition, the second partition, and the housing between the first partition and the second partition;
[0014] The first partition and the second partition are evenly distributed with a plurality of openings on the surface along the flue gas flow direction to respectively communicate the inner cavity with the inlet gas pipeline and the outlet gas pipeline.
[0015] Further, a flue gas flow equalizing and guiding plate is also arranged inside the housing. The flue gas flow equalizing and guiding plate is located upstream of the inner cavity along the flue gas flow path, and the outer periphery of the flue gas flow equalizing and guiding plate is fixedly sealed with the inner wall of the housing. The flue gas flow equalizing and guiding plate is evenly provided with a plurality of through holes on the surface along the flue gas flow direction.
[0016] Further, a first fan and a first electric damper are arranged inside the inlet gas pipeline, and the opening adjustment accuracy of the first electric damper is 1%.
[0017] Further, the outlet gas pipeline includes a flue gas outlet pipeline; a second electric damper is arranged inside the flue gas outlet pipeline, and the opening adjustment accuracy of the second electric damper is 1%.
[0018] Further, a CO2 outlet pipeline is also included;
[0019] The CO2 outlet pipeline is communicated with the inner cavity, or the CO2 outlet pipeline is communicated with the flue gas outlet pipeline;
[0020] A second blower, a third electric damper, and a concentration monitor are provided in the CO2 outlet pipeline. The second electric damper is configured to open when the heating device heats the solid adsorbent material to the adsorption temperature and close when the heating device heats the solid adsorbent material to the desorption temperature. The third electric damper is configured to close when the heating device heats the solid adsorbent material to the adsorption temperature and open when the heating device heats the solid adsorbent material to the desorption temperature.
[0021] In summary, compared with the prior art, the present invention has at least the following beneficial effects:
[0022] The integrated adsorption and desorption reaction device for CO2 capture of the present invention includes an inlet pipeline, an integrated adsorption and desorption mechanism, and an outlet pipeline. The integrated adsorption and desorption mechanism includes a housing, an inner cavity for placing a solid adsorbent material, and a heating device disposed inside the inner cavity. The inner cavity forms a flue gas flow path with the inlet pipeline and the outlet pipeline, so that the flue gas in the inlet pipeline flows through the inner cavity to the outlet pipeline. The heating device includes a rotatable heating body and a stirring portion provided on the heating body. By rotating the heating body and driving the stirring portion to rotate together, when the solid adsorbent material is heated to the adsorption temperature and desorption temperature required for CO2, the situation of local heat concentration in the solid adsorbent material can be avoided, and the heat can be transferred to the solid adsorbent material at each position more evenly and fully. Furthermore, the solid adsorbent material at each position in the inner cavity can be synchronously raised to the adsorption temperature required for adsorbing CO2 in the flue gas for CO2 adsorption work, and can be synchronously raised to the desorption temperature required for desorbing CO2 in the flue gas for CO2 desorption work, thereby improving the ability of the solid adsorbent material to capture CO2, and at the same time, the heating rate of the solid adsorbent material can be increased, and then the overall operation efficiency of the device can be improved, and the system operation energy consumption can be effectively reduced. In addition, when the stirring portion stirs the solid particles, it can continuously break up and remix the solid adsorbent material particles, so that the solid adsorbent material is in full contact with the heating body during stirring, strengthening the effect of uniform heating of the solid adsorbent material, and effectively avoiding the situation that the solid adsorbent material at the flue gas inlet has completed adsorption or desorption while the solid adsorbent material at the flue gas outlet has not started adsorption or desorption, strengthening the uniformity of adsorption and desorption of the solid adsorbent material. Description of the Drawings
[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0024] Figure 1 This is a schematic structural diagram of an integrated adsorption - desorption reaction device for CO2 capture provided in an embodiment of the present utility model.
[0025] Explanation of reference numerals:
[0026] 1. Inlet gas pipeline; 11. First fan; 12. First electric baffle door
[0027] 2. Integrated adsorption - desorption mechanism; 21. Shell; 22. Inner cavity; 23. Heating device; 231. Heating body; 232. Stirring part; 2321. Rake teeth; 233. Rotating motor; 24. Thermocouple; 25. First partition board; 26. Second partition board; 27. Flue gas flow - equalizing and guiding plate
[0028] 3. Outlet gas pipeline; 31. Flue gas outlet pipeline; 311. Second electric baffle door; 32. CO2 outlet pipeline; 321. Second fan; 322. Third electric baffle door; 323. Concentration monitor Detailed implementation manners
[0029] Next, the technical solutions of the present utility model will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0031] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0032] As shown in the attached Figure 1As shown in the figure, an embodiment of the present utility model discloses an integrated adsorption and desorption reaction device for CO2 capture, which includes an intake pipeline 1, an integrated adsorption and desorption mechanism 2, and an outlet pipeline 3. The intake pipeline 1 is communicated with the intake port of the integrated adsorption and desorption mechanism 2, and the outlet pipeline 3 is communicated with the outlet port of the integrated adsorption and desorption mechanism 2;
[0033] The integrated adsorption and desorption mechanism 2 includes a housing 21, an inner cavity 22 for placing a solid adsorption material, and a heating device 23 disposed inside the inner cavity 22. The inner cavity 22 forms a flue gas flow path with the intake pipeline 1 and the outlet pipeline 3, so that the flue gas in the intake pipeline 1 flows through the inner cavity 22 to the outlet pipeline 3;
[0034] The heating device 23 includes a rotatable heating body 231 and a stirring part 232 provided on the heating body 231. The heating device 23 is used to heat the solid adsorption material to the required adsorption temperature and desorption temperature.
[0035] Specifically, when the raw flue gas enters from the intake pipeline 1 and passes through the inner cavity 22 filled with the solid adsorption material, the solid adsorption material is heated to above 300°C, the required adsorption temperature of CO2, by the heating device 23 to adsorb CO2 in the flue gas. The flue gas treated by the adsorption material is discharged from the outlet pipeline 3. During the adsorption process, the process of CO2 being adsorbed by the solid adsorption material is an exothermic reaction, which can maintain the temperature inside the inner cavity 22 at about 650°C. Then, the solid adsorption material is heated to above 850°C, the required desorption temperature of CO2, by the heating device 23 to desorb CO2 in the flue gas, and the obtained CO2 is discharged from the outlet pipeline 3. During the heating process of the solid adsorption material, in order to make the heating of the solid adsorption material more uniform, the heating body 231 is set to rotate and drive the stirring part 232 to rotate together. When the solid adsorption material is heated to the required adsorption temperature and desorption temperature of CO2, it can avoid the situation of local heat concentration of the solid adsorption material, so that the heat is transferred to the solid adsorption material at each position more evenly and more fully. Furthermore, the solid adsorption material at each position in the inner cavity 22 can be synchronously raised to the required adsorption temperature for CO2 adsorption in the flue gas to carry out CO2 adsorption work, and can be synchronously raised to the required desorption temperature for CO2 desorption in the flue gas to carry out CO2 desorption work, thereby improving the CO2 capture ability of the solid adsorption material. At the same time, it can accelerate the heating rate of the solid adsorption material, thereby improving the overall operation efficiency of the device and effectively reducing the system operation energy consumption. In addition, when the stirring part 232 stirs the solid particles, it can continuously disperse and remix the solid adsorption material particles, so that the solid adsorption material is in full contact with the heating body 231 during stirring, strengthening the effect of uniform heating of the solid adsorption material, and effectively avoiding the situation that the solid adsorption material at the flue gas inlet has completed adsorption or desorption while the solid adsorption material at the flue gas outlet has not started adsorption or desorption, strengthening the uniformity of adsorption and desorption of the solid adsorption material.
[0036] Further, in this embodiment, the heating body 231 is rotated by connecting a rotary motor 233. The rotary motor 233 is arranged outside the housing 21 and externally connected to the heating body 231 to drive the heating body 231 to rotate. By driving the heating body 231 to rotate at a constant speed by the rotary motor 233, the solid adsorption material is continuously mixed, enabling the solid adsorption material to fully react with the raw flue gas entering the inner cavity 22, and further making the heat transfer from the heating body 231 to the solid adsorption material more uniform, avoiding excessive heat accumulation around the heating body 231. Preferably, the power of the rotary motor 233 is determined according to the length, weight, etc. of the heating body 231. The rotation speed of the rotary motor 233 is 2 - 10 revolutions per minute, and there are various ways to realize the rotation of the heating body 231, such as using gears, belts, etc., which are not limited herein.
[0037] In addition, since the solid adsorption materials for capturing CO2, such as CaO, MgO, etc., are granular, in this embodiment, the stirring part 232 includes a number of rake teeth 2321. The number of rake teeth 2321 is evenly spaced on the surface of the heating body 231, and is used to help break up and remix the solid adsorption material particles after being dispersed by the heating device 23, so as to more comprehensively stir and evenly distribute the solid adsorption material particles at various positions in the inner cavity 22, enabling the solid adsorption material to be heated more evenly. Preferably, the spacing between the rake teeth 2321 is set to 5 - 10 cm, which can avoid being blocked by the solid adsorption material particles when the rake teeth 2321 are stirred due to too dense spacing, and will not reduce the stirring effect due to too large a spacing; the length of the rake teeth 2321 is 5 - 10 cm, which can penetrate into the interior of the solid adsorption material particles for effective stirring, and at the same time, the length will not be too long to cause the heating device 23 to be structurally unstable; the inclination angle of the connection between the rake teeth 2321 and the heating body 231 is 45° - 60°, which can provide a stronger rolling and pushing effect, helping to improve the mixing effect between the solid adsorption material particles.
[0038] In order to monitor the temperature of the solid adsorption material in the inner cavity 22 in real time, a thermocouple 24 is provided inside the inner cavity 22. After the reaction device starts to operate, when the temperature of the solid adsorption material measured by the thermocouple 24 reaches the adsorption temperature of 300°C and above, the heating device 23 stops heating; when the temperature of the solid adsorption material measured by the thermocouple 24 gradually rises to reach the adsorption temperature of 650°C and above, it indicates that the solid adsorption material is undergoing an adsorption exothermic reaction process. When the temperature of the solid adsorption material measured by the thermocouple 24 shows a significant decrease (more than 20°C lower than the highest value), it can be considered that the solid adsorption material has reached a saturated state; in order to desorb CO2 from the saturated solid adsorption material, the heating device 23 continues to heat. When the temperature of the solid adsorption material measured by the thermocouple 24 reaches the adsorption temperature of 850°C and above, it is determined whether to stop the heating of the heating device 23 according to the temperature displayed by the thermocouple 24. The standard is that the temperature needs to be maintained at 850°C for no less than 30 minutes.
[0039] Inside the housing 21, a first partition plate 25 and a second partition plate 26 that span the flue gas flow path are provided. The first partition plate 25 is located on the side close to the intake pipe 1 and is fixedly sealed with the inner wall of the housing 21. The second partition plate 26 is located on the side close to the outlet pipe 3 and is fixedly sealed with the inner wall of the housing 21, preventing the leakage of flue gas through the gap between the partition plate and the housing 21 without being treated, thereby reducing the CO2 capture capacity. The inner cavity 22 is surrounded by the first partition plate 25, the second partition plate 26, and the housing 21 between the first partition plate 25 and the second partition plate 26, providing a sealed space for the placement of the solid adsorption material and the heating device 23. Preferably, the housing 21 is made of carbon steel, and its size can be determined according to the amount of flue gas to be treated. The first partition plate 25 and the second partition plate 26 can also be made of carbon steel, and their sizes are determined according to the size of the housing 21.
[0040] In addition, a number of openings are evenly distributed on the surfaces of the first partition plate 25 and the second partition plate 26 along the flue gas flow direction, so that the inner cavity 22 is respectively communicated with the intake pipe 1 and the outlet pipe 3, enabling the raw flue gas to flow into and out of the inner cavity 22 evenly along the specified flue gas flow path, so as to cooperate with the solid adsorption material stirred evenly inside the inner cavity 22 to achieve adsorption and desorption, and prevent the situation of excessive or too small local flow rate of the raw flue gas in the inner cavity 22. In order to avoid the blockage of the openings by solid adsorption material particles, which hinders the flue gas flow, or the loss of solid adsorption material particles passing through the openings, the diameter of the openings should be smaller than the particle size of the solid adsorption material particles. For example, the particle sizes of commonly used materials such as CaO and MgO with CO2 adsorption performance are usually between 0.2 - 0.4 cm. Therefore, the diameter of the openings can be between 0.1 - 0.3 cm, and the specific situation can be adjusted according to the particle size of the solid adsorption material particles during actual use, which is not limited here.
[0041] Furthermore, in order to make the flow field of the raw flue gas uniform and dispersed before entering the first partition plate 25, a flue gas flow equalizing and guiding plate 27 is also provided inside the housing 21. The flue gas flow equalizing and guiding plate 27 is located upstream of the inner cavity 22 along the flue gas flow path, and the outer periphery of the flue gas flow equalizing and guiding plate 27 is fixedly sealed with the inner wall of the housing 21. The flue gas flow equalizing and guiding plate 27 is evenly provided with a number of through holes on the surface along the flue gas flow direction, and the diameter of the through holes can be adjusted between 5 - 20 cm. The specific situation can be adjusted according to the amount of flue gas to be treated during actual use, which is not limited here.
[0042] As shown in the appendix Figure 1As shown in the figure, in this embodiment, a first fan 11 and a first electric damper 12 are provided inside the intake pipeline 1. The intake pipeline 1 can be directly connected to the main flue of the thermal power plant. The outlet pipeline 3 includes a flue gas outlet pipeline 31 and a CO2 outlet pipeline 32. A second electric damper 311 is provided inside the flue gas outlet pipeline 31, and the flue gas outlet pipeline 31 can be directly connected to the power plant chimney for discharging the flue gas treated by the solid adsorption material. A second fan 321, a third electric damper 322, and a concentration monitor 323 are provided inside the CO2 outlet pipeline 32. The CO2 outlet pipeline 32 can be connected to a CO2 collection device, and the collected CO2 can be used in multiple fields subsequently. The CO2 outlet pipeline 32 can be directly connected to the inner cavity 22 or connected to the flue gas outlet pipeline 31. The flexible control of CO2 emission can be achieved through the cooperation of the second electric damper 311 and the third electric damper 322. Therefore, the connection mode of the CO2 outlet pipeline 32 in the present utility model is not limited.
[0043] Specifically, before the reaction device starts running, ensure that all electric baffle gates are closed. Start the heating device 23. After the heating device 23 heats the solid adsorption material in the inner cavity 22 to above 300°C, turn off the heating device 23. At this time, open the first electric baffle gate 12, the first fan 11, and the second electric baffle gate 311, so that the raw flue gas enters the adsorption and desorption integrated mechanism 2, and successively passes through the flue gas flow equalizing and guiding plate 27 and the first partition plate 25 to enter the solid adsorption material in the inner cavity 22 for adsorption. The flue gas treated by the solid adsorption material continuously passes through the second partition plate 26 and is discharged from the flue gas outlet pipeline 31. In the inner cavity 22, when the CO2 in the raw flue gas is adsorbed by the solid adsorption material, an exothermic reaction occurs, causing the solid adsorption material inside the inner cavity 22 to reach 650°C and above. After adsorbing for a period of time, when the temperature of the solid adsorption material in the inner cavity 22 drops significantly (more than 20°C lower than the highest value), it can be considered that the solid adsorption material has reached the saturated state. At this time, close the first electric baffle gate 12, the first fan 11, and the second electric baffle gate 311, so that the reaction device is in a closed state. Start the heating device 23 again to heat the internal solid adsorption material to 850°C and above and maintain this temperature for more than 30 minutes to desorb the CO2 in the solid adsorption material. Then turn off the heating device 23, open the third electric baffle gate 322 and the second fan 321, and discharge the desorbed CO2 through the CO2 outlet pipeline 32 until the CO2 concentration value in the CO2 outlet pipeline 32 is monitored to be lower than 10%, then turn off the second fan 321 to stop the CO2 emission. At this time, the CO2 capture work for the first wave of flue gas is completed. Then start the CO2 capture work for the circulating flue gas. Close the third electric baffle gate 322, open the first electric baffle gate 12, the first fan 11, and the second electric baffle gate 311. The raw flue gas enters the adsorption and desorption integrated mechanism 2, and successively passes through the flue gas flow equalizing and guiding plate 27 and the first partition plate 25 to enter the solid adsorption material inside the inner cavity 22, and the temperature of the solid adsorption material is monitored in real time. If the temperature of the solid adsorption material is greater than or equal to 300°C at this time, that is, the condition for the solid adsorption material to adsorb CO2 is reached, then the heating device 23 does not need to perform the initial preheating step to 300°C, and directly continue with the subsequent adsorption and desorption work; if the temperature of the solid adsorption material is less than 300°C at this time, that is, the temperature at which the solid adsorption material can adsorb CO2 is not reached, then after the raw flue gas is discharged through the flue gas outlet pipeline 31, close the first electric baffle gate 12, the first fan 11, and the second electric baffle gate 311, complete the heating device 23 to heat the solid adsorption material in the inner cavity 22 to above 300°C and subsequent work, and cycle in this way.
[0044] Among them, the opening adjustment accuracy of the first electric baffle door 12, the second electric baffle door 311, and the third electric baffle door 322 is all 1%, which is used to flexibly control the corresponding pipeline to adjust the opening according to the actual treatment requirements and working conditions, and precisely control the gas flow rate and gas volume entering or flowing out of the reaction device.
[0045] In addition, since the flue gas contains a small amount of corrosive SO2, preferably, the inlet gas pipeline 1 is made of carbon steel and lined with rubber for anti-corrosion. The first electric baffle door 12 is made of carbon steel and lined with rubber for anti-corrosion, and the part in contact with the wall of the inlet gas pipeline 1 is coated with materials such as rubber gaskets to ensure the sealing effect. When the flue gas passes through the high-temperature solid adsorption material, the corrosiveness of SO2 is greatly reduced, and the gas temperature is relatively high. Preferably, the flue gas outlet pipeline 31 is made of carbon steel, the second electric baffle door 311 is made of carbon steel, and the part in contact with the wall of the flue gas outlet pipeline 31 of the second electric baffle door 311 is coated with high-temperature resistant asbestos and other materials to ensure the sealing effect; the CO2 outlet pipeline 32 is made of carbon steel, the third electric baffle door 322 is made of carbon steel, and the part in contact with the wall of the CO2 outlet pipeline 32 of the third electric baffle door 322 is coated with high-temperature resistant asbestos and other materials to ensure the sealing effect. The actual materials used for the above components can also be selected correspondingly according to the actual treatment requirements and working conditions, and are not limited here.
[0046] Furthermore, the first fan 11 and the second fan 321 are preferably in the form of centrifugal fans or roots fans, etc., and are not limited here.
[0047] The above embodiments are only the preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.
Claims
1. An integrated adsorption and desorption reaction device for CO2 capture, characterized in that, It includes an intake pipeline, an adsorption and desorption integrated mechanism, and an exhaust pipeline. The intake pipeline is communicated with the air inlet of the adsorption and desorption integrated mechanism, and the exhaust pipeline is communicated with the air outlet of the adsorption and desorption integrated mechanism; The adsorption and desorption integrated mechanism includes a housing, an inner cavity for placing a solid adsorption material, and a heating device disposed inside the inner cavity. The inner cavity forms a flue gas flow path with the intake pipeline and the exhaust pipeline, so that the flue gas in the intake pipeline flows through the inner cavity to the exhaust pipeline; The heating device includes a rotatable heating body and a stirring part arranged on the heating body. The heating device is used to heat the solid adsorption material to the required adsorption temperature and desorption temperature.
2. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, wherein, The heating body is connected with a rotating motor. The rotating motor is arranged outside the housing and externally connected to the heating body to drive the heating body to rotate.
3. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, characterized in that, The stirring part includes a plurality of rake teeth, and the plurality of rake teeth are evenly spaced on the surface of the heating body.
4. The integrated adsorption and desorption reaction device for CO2 capture according to claim 3, characterized in that, The spacing between the rake teeth is 5 - 10 cm, and / or the length of the rake teeth is 5 - 10 cm, and / or the inclination angle of the rake teeth connected to the heating body is 45° - 60°.
5. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, characterized in that, A thermocouple is arranged on the inner side of the inner cavity for real-time monitoring of the temperature of the solid adsorption material in the inner cavity.
6. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, wherein A first partition plate and a second partition plate spanning the flue gas flow path are arranged inside the housing. The first partition plate is located on the side close to the intake pipeline and is hermetically fixed to the inner wall of the housing. The second partition plate is located on the side close to the exhaust pipeline and is hermetically fixed to the inner wall of the housing. The inner cavity is surrounded by the first partition plate, the second partition plate, and the housing between the first partition plate and the second partition plate; A plurality of openings are evenly distributed on the surfaces of the first partition plate and the second partition plate along the flue gas flow direction to respectively communicate the inner cavity with the intake pipeline and the exhaust pipeline.
7. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, wherein A flue gas flow equalizing and guiding plate is further arranged inside the housing. The flue gas flow equalizing and guiding plate is located upstream of the inner cavity along the flue gas flow path, and the outer periphery of the flue gas flow equalizing and guiding plate is hermetically fixed to the inner wall of the housing. A plurality of through holes are evenly arranged on the surface of the flue gas flow equalizing and guiding plate along the flue gas flow direction.
8. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, characterized in that, A first fan and a first electric damper are arranged inside the intake pipeline, and the opening adjustment accuracy of the first electric damper is 1%.
9. The integrated adsorption and desorption reaction device for CO2 capture according to claim 1, wherein, The exhaust pipeline includes a flue gas exhaust pipeline; a second electric damper is arranged inside the flue gas exhaust pipeline, and the opening adjustment accuracy of the second electric damper is 1%.
10. The integrated adsorption and desorption reaction device for CO2 capture according to claim 9, characterized in that, The exhaust pipeline further includes a CO2 exhaust pipeline; The CO2 exhaust pipeline is communicated with the inner cavity, or the CO2 exhaust pipeline is communicated with the flue gas exhaust pipeline; A second fan, a third motorized damper, and a concentration monitor are provided in the CO2 outlet pipeline. The second motorized damper is configured to open when the heating device heats the solid adsorbent material to the adsorption temperature and close when the heating device heats the solid adsorbent material to the desorption temperature. The third motorized damper is configured to close when the heating device heats the solid adsorbent material to the adsorption temperature and open when the heating device heats the solid adsorbent material to the desorption temperature.