Device and method for continuously adsorbing and regenerating carbon dioxide by using solid amine

Abstract

The invention provides a device and method for continuously adsorbing and regenerating carbon dioxide through solid amine, the device comprises an adsorption reactor and a regeneration reactor, the adsorption reactor comprises a first reaction bin, and the regeneration reactor comprises a second reaction bin; a first adsorbent outlet in the first reaction bin is connected with a second adsorbent inlet in the second reaction bin; a circulating conveyor is connected between a second adsorbent outlet in the second reaction bin and a first adsorbent inlet in the first reaction bin; spiral conveyors are arranged at the position, between the first adsorbent outlet and the first adsorbent inlet, in the first reaction bin and the position, between the second adsorbent outlet and the second adsorbent inlet, in the second reaction bin; a raw material flue gas inlet formed in the first reaction bin is connected with flue gas conveying equipment; a purified gas outlet is formed in the first reaction bin; the second reaction bin is provided with an exhaust port and a purge gas inlet, and the second reaction bin is provided with a heating assembly. The device improves the utilization rate of the adsorbent and the reaction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of carbon dioxide capture technology, specifically to a device and method for continuous adsorption and regeneration of carbon dioxide by solid amines. Background Technology

[0002] With the advancement of the "dual carbon" goals, carbon dioxide capture, utilization and storage (CCUS) technology has become a key means of industrial greenhouse gas emission reduction. Among them, solid amine adsorption based on amine chemical adsorption is regarded as one of the most promising capture technologies due to its advantages such as high selectivity, high adsorption capacity and low equipment corrosion. However, existing solid amine CO2 capture technologies have significant defects, making it difficult to achieve mild, stable and continuous operation. They also lack technical equipment with high efficiency, low energy consumption and low wear characteristics, which seriously restricts the large-scale application of this technology.

[0003] Currently, the industry mainly adopts two types of technical solutions: one is the traditional fixed-bed reactor technology, which operates through a dual-tower or multi-tower parallel mode and relies on a complex valve control system to achieve intermittent "adsorption-regeneration" cycle operation; the other is the continuous operation solution such as fluidized bed and moving bed explored to overcome the defects of fixed bed. Although the above solutions can capture carbon dioxide, they also have obvious drawbacks. For example, fixed beds have problems such as discontinuous operation, high equipment and maintenance costs, high energy consumption, and low adsorption efficiency; fluidized beds have high requirements for the wear resistance of adsorbents, solid amine materials are easy to pulverize and lose, the system has high energy consumption, and the operating window is narrow; moving beds are prone to bridging, flow deviation and other blockage phenomena, resulting in uneven gas-solid contact, difficulty in control, and easy wear of adsorbents. Summary of the Invention

[0004] To address the problems of continuous operation, high energy consumption, and low adsorption efficiency in existing fixed-bed carbon dioxide capture processes, and the tendency for clogging in moving-bed carbon dioxide capture processes, this invention provides a device and method for continuous adsorption and regeneration of carbon dioxide using solid amines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: This invention proposes a device for continuous adsorption and regeneration of carbon dioxide by solid amines, comprising an adsorption reactor and a regeneration reactor, wherein the adsorption reactor includes a first reaction chamber and the regeneration reactor includes a second reaction chamber; The first adsorbent outlet on the first reaction chamber is connected to the second adsorbent inlet on the second reaction chamber; A circulation conveyor connects the second adsorbent outlet on the second reaction chamber to the first adsorbent inlet on the first reaction chamber. Screw conveyors are provided in the first reaction chamber at the position between the first adsorbent outlet and the first adsorbent inlet, and in the second reaction chamber at the position between the second adsorbent outlet and the second adsorbent inlet. A flue gas conveying device is connected to a raw material flue gas inlet located on the side of the first reaction chamber near the outlet of the first adsorbent; a purified gas outlet is located on the side of the first reaction chamber near the inlet of the first adsorbent. An exhaust port and a purge gas inlet are provided on the side of the second reaction chamber away from the outlet of the first adsorbent, and a heating component is provided on the outer wall of the second reaction chamber.

[0006] Preferably, the heating assembly includes a fixing sleeve, which is fitted onto the outer wall of the second reaction chamber. A heating wire is disposed inside the fixing sleeve, and a power supply assembly is connected to the heating wire.

[0007] Preferably, a temperature sensor is provided on the outer wall of the second reaction chamber.

[0008] Preferably, a separation chamber is provided on the side of the second reaction chamber away from the inlet of the second adsorbent, and the separation chamber is in communication with the second reaction chamber; The exhaust port is provided at the top of the separation chamber, and the second adsorbent outlet is provided at the bottom of the separation chamber; The separation chamber is equipped with a material level sensor and a pressure sensor.

[0009] Preferably, an adsorbent collection chamber is provided at the bottom of the first reaction chamber, the adsorbent collection chamber is connected to the first reaction chamber, the bottom of the adsorbent collection chamber is provided with the first adsorbent outlet, and the side of the adsorbent collection chamber is provided with the raw material flue gas inlet.

[0010] Preferably, the screw conveyor includes a first conveying assembly installed in the first reaction chamber and a second conveying assembly installed in the second reaction chamber; The first conveying assembly includes a first rotating shaft, on which a first spiral blade is provided, and a first drive motor is connected to the end of the first rotating shaft near the first adsorbent inlet. The second conveying assembly includes a second rotating shaft, on which a second spiral blade is provided, and a second drive motor is connected to the end of the second rotating shaft near the inlet of the second adsorbent.

[0011] Preferably, the circulating conveyor includes a first circulating conveying component and a second circulating conveying component; The first circulating conveying assembly includes a first installation chamber, a third adsorbent inlet connected to the second adsorbent outlet is provided at the bottom of the first installation chamber, a third adsorbent outlet is provided near the top of the first installation chamber, a transmission assembly is installed in the first installation chamber between the third adsorbent outlet and the third adsorbent inlet, and a plurality of loading hoppers are provided at equal intervals on the transmission assembly. The first installation chamber is provided with a cold air outlet and a cold air inlet, and a cold air conveying device is connected between the cold air outlet and the cold air inlet; The first installation chamber has a material guiding assembly located at the third adsorbent outlet; the material guiding assembly includes a telescopic plate, and electric push rods are installed on both sides of the telescopic plate. A limiter is installed near the top of the first installation chamber, and the limiter is communicatively connected to a controller. The controller wires are connected to the electric push rods. The second circulating conveying assembly includes a second mounting chamber. One end of the second mounting chamber is provided with a fourth adsorbent outlet communicating with the first adsorbent inlet and a fourth adsorbent inlet communicating with the third adsorbent outlet. A rotating roller is provided inside the second mounting chamber, and a conveyor belt is connected to the rotating roller. One end of the conveyor belt is located on the side of the fourth adsorbent inlet, and the other end of the conveyor belt is located on the side of the fourth adsorbent outlet.

[0012] Preferably, the transmission assembly includes sprockets disposed near the top and bottom of the first installation chamber, a transmission chain connected to the two sprockets, a connecting plate disposed on the transmission chain, and the loading hopper mounted on the connecting plate; A third drive motor is connected to the sprocket.

[0013] Preferably, a first guide plate is provided in the second installation chamber between the conveyor belt and the fourth adsorbent inlet, and a second guide plate is provided in the second installation chamber between the conveyor belt and the fourth adsorbent outlet.

[0014] This invention proposes a method for continuous adsorption and regeneration of carbon dioxide using solid amines. The method, employing the aforementioned apparatus for continuous adsorption and regeneration of carbon dioxide using solid amines, includes the following steps: The adsorbent is loaded into the first reaction chamber of the adsorption reactor from the first adsorbent inlet via a circulating conveyor. Start the screw conveyor in the first reaction chamber to gradually transport the adsorbent from the first adsorbent inlet to the first adsorbent outlet in the first reaction chamber, and the adsorbent flows into the second reaction chamber in the regeneration reactor from the second adsorbent inlet; Start the screw conveyor in the second reaction chamber to gradually transport the adsorbent from the second adsorbent inlet to the second adsorbent outlet. The adsorbent flows into the circulation conveyor, which transports the adsorbent back to the first adsorbent inlet and inputs it into the first reaction chamber, so that the adsorbent is circulated. Start the flue gas conveying equipment to input the flue gas from the raw material flue gas inlet into the first reaction chamber. The adsorbent in the first reaction chamber absorbs the carbon dioxide in the flue gas, and the flue gas after the carbon dioxide is absorbed is discharged from the purified gas outlet. After absorbing carbon dioxide, the adsorbent enters the second reaction chamber via a screw conveyor. The heating component raises the temperature of the second reaction chamber. Under high temperature conditions, the carbon dioxide adsorbed by the adsorbent undergoes desorption. Purge gas is introduced from the purge gas inlet, and the desorbed carbon dioxide is blown out from the exhaust port.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: This invention proposes a device for continuous adsorption and regeneration of carbon dioxide using solid amines. This device forms an adsorption zone for carbon dioxide and a regeneration zone through an adsorption reactor and a regeneration reactor. During the carbon dioxide regeneration and adsorption process, the adsorbent continuously flows from the adsorption reactor to the regeneration reactor and back again through the cooperation of a screw conveyor and a circulating conveyor. This eliminates the inherent periodic switching operation of fixed-bed technology, removes the resulting airflow fluctuations, ensures stable operation and consistent product quality. The regeneration process only heats the moving adsorbent particles themselves, avoiding the huge energy waste of repeatedly heating and cooling the entire tower in a fixed bed, significantly reducing energy consumption. Furthermore, the screw conveyor prevents clogging, thereby improving adsorbent utilization and reaction efficiency.

[0016] Furthermore, a heating component is installed on the regeneration reactor in this device. The heating component can maintain a high-temperature environment inside the regeneration reactor, thereby improving the desorption efficiency of carbon dioxide in the adsorbent.

[0017] Furthermore, this device is equipped with a temperature sensor on the regeneration reactor. The temperature sensor can acquire the temperature data inside the regeneration reactor in real time, monitor the temperature inside the regeneration reactor, and prevent the temperature inside the regeneration reactor from being too high, which would affect the desorption of carbon dioxide inside the regeneration reactor.

[0018] Furthermore, in this device, the first circulating conveyor component of the circulating conveyor raises the hopper to an appropriate height through the cooperation of a sprocket and a transmission chain, increasing the stability of the circulating conveyor operation; the second circulating conveyor component re-transports the adsorbent into the adsorption reactor through a rotating roller and a conveyor belt, and the first and second circulating conveyor components are connected by a limiter, a telescopic plate, and a controller to form a structure that guides the adsorbent, smoothly guiding the adsorbent transported by the first circulating conveyor component into the second circulating conveyor component, increasing the stability of the circulating conveyor of the adsorbent.

[0019] Furthermore, the second circulating conveying component in this device is equipped with a first guide plate and a second guide plate. The first guide plate allows the adsorbent entering through the fourth adsorbent inlet to be smoothly conveyed onto the conveyor belt, while the second guide plate stably conveys the adsorbent to the fourth adsorbent outlet, thereby increasing the stability of the circulating conveying of the adsorbent. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a device for continuous adsorption and regeneration of carbon dioxide by solid amines provided by the present invention. Figure 2 A schematic diagram of the adsorption reactor in a device for continuous adsorption and regeneration of carbon dioxide by solid amines provided by the present invention; Figure 3 A schematic diagram of the regeneration reactor in a device for continuous adsorption and regeneration of carbon dioxide by solid amines provided by the present invention; Figure 4 A schematic diagram of the circulating conveyor in a device for continuous adsorption and regeneration of carbon dioxide by solid amines provided by the present invention; In the attached diagram: 1. Adsorption reactor; 101. First reaction chamber; 102. First drive motor; 103. First adsorbent inlet; 104. Purified gas outlet; 105. Adsorbent collection chamber; 106. Raw material flue gas inlet; 107. First spiral blade; 108. First rotating shaft; 109. First adsorbent outlet; 2. Regeneration reactor; 201. Second rotating shaft; 202. Separation chamber; 203. Exhaust port; 204. Second adsorbent outlet; 205. Second spiral blade; 206. Second adsorbent inlet; 207. Second drive motor; 208. Second reaction chamber; 209. Purge gas inlet; 3. First circulating conveyor. Components; 301, First mounting bin; 302, Third adsorbent inlet; 303, Cold air inlet; 304, Sprocket; 305, Cold air outlet; 306, Loading hopper; 307, Telescopic plate; 308, Third adsorbent outlet; 309, Drive chain; 4, Second circulating conveyor assembly; 401, Second mounting bin; 402, First guide plate; 403, Second guide plate; 404, Conveyor belt; 405, Drive roller; 406, Fourth adsorbent outlet; 407, Fourth adsorbent inlet; 5, Pressure sensor; 6, Temperature sensor; 7, Level sensor; 8, Heating assembly; 9, Third drive motor; 10, Fourth drive motor. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] This invention proposes a device for the continuous adsorption and regeneration of carbon dioxide by solid amines, such as... Figures 1-4As shown, the reactor includes an adsorption reactor 1 and a regeneration reactor 2. The adsorption reactor 1 includes a first reaction chamber 101, which is vertically installed. The regeneration reactor 2 includes a second reaction chamber 208, which is horizontally installed and located below the first reaction chamber 101, with one end of the second reaction chamber 208 close to the bottom end of the first reaction chamber 101. A first adsorbent outlet 109 on the bottom end face of the first reaction chamber 101 is connected to a second adsorbent inlet 206 on the upper end face of the second reaction chamber 208, located near one end of the second reaction chamber 208. A second adsorbent outlet 204 on the second reaction chamber 208 is connected to the first adsorption reactor 109. A circulating conveyor is connected between the first adsorbent inlets 103 on the reaction chamber 101; a screw conveyor is provided in the first reaction chamber 101 between the first adsorbent outlet 109 and the first adsorbent inlet 103, and in the second reaction chamber 208 between the second adsorbent outlet 204 and the second adsorbent inlet 206; a flue gas conveying device is connected to the raw material flue gas inlet 106 on the side of the first reaction chamber 101 near the first adsorbent outlet 109; a purified gas outlet 104 is provided on the side of the first reaction chamber 101 near the first adsorbent inlet 103; an exhaust port 203 and a purge gas inlet 209 are provided on the side of the second reaction chamber 208 away from the first adsorbent outlet 109, and a heating component 8 is provided on the outer wall of the second reaction chamber 208. In this device, the adsorbent is circulated back and forth between the second reaction chamber 208 and the first reaction chamber 101 by the cooperation of the screw conveyor and the circulating conveyor. This realizes the continuous operation of the entire process of adsorption, regeneration and adsorbent transportation, completely gets rid of the inherent periodic switching operation of fixed bed technology, eliminates the airflow fluctuation caused by it, ensures stable operation and stable product quality, and is easier to integrate with upstream and downstream processes.

[0028] In this embodiment, as Figure 3 As shown, the heating component 8 includes a fixed sleeve, which is fitted onto the outer wall of the second reaction chamber 208. A heating wire is installed inside the fixed sleeve, and a power supply component is connected to the heating wire. The heating component enables the second reaction chamber 208 to maintain a high-temperature environment, allowing the carbon dioxide adsorbed by the adsorbent to desorb quickly, accelerating the regeneration rate of carbon dioxide, avoiding the huge energy waste of repeatedly heating and cooling the entire tower in the fixed bed, and significantly reducing energy consumption.

[0029] In this embodiment, as Figure 3 As shown, a temperature sensor 6 is installed on the outer wall of the second reaction chamber 208. The temperature sensor 6 acquires the temperature data inside the second reaction chamber 208 in real time, thereby monitoring the second reaction chamber 208 and preventing the temperature inside the second reaction chamber 208 from becoming too high, which would affect the stable operation of the system.

[0030] In this embodiment, as Figure 3 As shown, a separation chamber 202 is provided on the side of the second reaction chamber 208 away from the second adsorbent inlet 206, and the separation chamber 202 is connected to the second reaction chamber 208; an exhaust port 203 is provided at the top of the separation chamber 202, and a second adsorbent outlet 204 is provided at the bottom of the separation chamber 202; a material level sensor 7 and a pressure sensor 5 are provided on the separation chamber 202.

[0031] In this embodiment, an adsorbent collection chamber 105 is provided at the bottom of the first reaction chamber 101. The adsorbent collection chamber 105 is connected to the first reaction chamber 101. A first adsorbent outlet 109 is provided at the bottom of the adsorbent collection chamber 105. A raw material flue gas inlet 106 is provided on the side of the adsorbent collection chamber 105.

[0032] In this embodiment, as Figures 1-3 As shown, the screw conveyor includes a first conveying assembly installed in the first reaction chamber 101 and a second conveying assembly installed in the second reaction chamber 208. The first conveying assembly includes a first rotating shaft 108, which is vertically installed in the first reaction chamber 101. A first helical blade 107 is arranged axially on the first rotating shaft 108 at a position in the first reaction chamber 101. A first drive motor 102 is connected to the end of the first rotating shaft 108 near the first adsorbent inlet 103. The first drive motor 102 drives the first rotating shaft 108 to rotate, which in turn drives the first helical blade 107 to rotate, thus conveying the contents of the first reaction chamber 101 from near the first adsorbent inlet 103. The adsorbent entering 03 is gradually transported to the position of the first adsorbent outlet 209; the second conveying component includes a second rotating shaft 201, which is horizontally installed in the second reaction chamber 208. A second spiral blade 205 is provided on the second rotating shaft 201 on the outer wall of the second reaction chamber 208. A second drive motor 207 is connected to the end of the second rotating shaft 201 near the second adsorbent inlet 206. The second drive motor 207 drives the second rotating shaft 201 to rotate, and the second rotating shaft 201 drives the second spiral blade 205 to rotate, so as to gradually transport the adsorbent entering from the second adsorbent inlet 206 in the second reaction chamber 208 to the position of the second adsorbent outlet 204.

[0033] In this embodiment, as Figure 4As shown, the circulating conveyor includes a first circulating conveying component 3 and a second circulating conveying component 4. The first circulating conveying component 3 includes a first mounting chamber 301, which is vertically installed. A third adsorbent inlet 302, communicating with a second adsorbent outlet 204, is located at the bottom of the first mounting chamber 301. A third adsorbent outlet 308 is located near the top of the first mounting chamber 301. A transmission component is installed inside the first mounting chamber 301 between the third adsorbent outlet 308 and the third adsorbent inlet 302. Multiple loading hoppers 306 are evenly spaced on the transmission component. A cold air outlet 305 and a cold air inlet 303 are provided on the first mounting chamber 301, and a cold air conveying device is connected between the cold air outlet 305 and the cold air inlet 303. The second circulating conveyor... Component 4 includes a second mounting chamber 401. One end of the second mounting chamber 401 is provided with a fourth adsorbent outlet 406 communicating with the first adsorbent inlet 103 and a fourth adsorbent inlet 407 communicating with the third adsorbent outlet 308. A rotating roller 405 is provided inside the second mounting chamber 401. A fourth drive motor 10 is connected to the rotating roller 405. A conveyor belt 404 is connected to the rotating roller 405. One end of the conveyor belt 404 is located on the side of the fourth adsorbent inlet 407, and the other end of the conveyor belt 404 is located on the side of the fourth adsorbent outlet 406. The circulating conveyor effectively avoids the violent collisions in the fluidized bed and the bridging and squeezing problems that may occur in the moving bed, greatly reduces the pulverization and wear of adsorbent materials such as solid amines, extends the service life, and reduces operating costs.

[0034] In this embodiment, as Figure 4 As shown, a material guiding assembly is installed in the first installation chamber 301 at the position of the third adsorbent outlet 308. The material guiding assembly includes a telescopic plate 307, and electric push rods are installed on both sides of the telescopic plate 307. The telescopic plate 307 is inclined upward, that is, the telescopic head of the telescopic plate 307 is inclined upward. A limiter is installed in the first installation chamber 301 near its top. The limiter is connected to a controller, and the controller wire is connected to the electric push rod. When the hopper 306 reaches the position of the limiter, the limiter sends a signal to the controller. The controller controls the electric push rod to push the telescopic plate 307 to form a guiding plate. The hopper 306 tilts onto the telescopic plate 307, guiding the adsorbent to the third adsorbent outlet 308, from which it flows out into the second circulation conveying assembly 4 for conveying.

[0035] In this embodiment, as Figure 4As shown, the transmission assembly includes sprockets 304 located near the top and bottom of the first mounting chamber 301. A transmission chain 309 is connected to the two sprockets 304, and a connecting plate is provided on the transmission chain 309. A loading hopper 306 is mounted on the connecting plate. A third drive motor 9 is connected to the sprockets 304. The cooperation between the sprockets 304 and the transmission chain 309 can increase the stability of the loading hopper 306, thereby enabling the first circulating conveying assembly 3 to stably convey the adsorbent to the second circulating conveying assembly 4.

[0036] In this embodiment, as Figure 4 As shown, a first guide plate 402 is provided in the second installation chamber 401 between the conveyor belt 404 and the fourth adsorbent inlet 407, and a second guide plate 403 is provided in the second installation chamber 401 between the conveyor belt 404 and the fourth adsorbent outlet 406. The first guide plate 402 and the second guide plate 403 can guide the adsorbent, so that the adsorbent entering from the fourth adsorbent inlet 407 can be smoothly transported to the conveyor belt 404. When the conveyor belt 404 transports the adsorbent to the position of the fourth adsorbent outlet 406, it can stably transport the adsorbent to the position of the fourth adsorbent outlet 406.

[0037] This invention proposes a method for continuous adsorption and regeneration of carbon dioxide using solid amines. The method, employing the aforementioned apparatus for continuous adsorption and regeneration of carbon dioxide using solid amines, includes the following steps: The adsorbent is loaded into the first reaction chamber 101 of the adsorption reactor 1 through the first adsorbent inlet 103 via a circulation conveyor. The screw conveyor in the first reaction chamber 101 is activated to gradually transport the adsorbent from the first adsorbent inlet 103 to the first adsorbent outlet 109. The adsorbent then flows from the second adsorbent inlet 206 into the second reaction chamber 208 of the regeneration reactor 2. The screw conveyor in the second reaction chamber 208 is activated to gradually transport the adsorbent from the second adsorbent inlet 206 to the second adsorbent outlet 204. The adsorbent then flows into the circulation conveyor, which recycles the adsorbent. The adsorbent is then fed to the first adsorbent inlet 103 and input into the first reaction chamber 101, allowing the adsorbent to circulate. The flue gas conveying equipment is activated, and the flue gas is input from the raw material flue gas inlet 106 into the first reaction chamber 101. The adsorbent in the first reaction chamber 101 absorbs the carbon dioxide in the flue gas, and the flue gas after the carbon dioxide is absorbed is discharged from the purified gas outlet 104. The adsorbent after absorbing carbon dioxide is conveyed into the second reaction chamber 208 by the screw conveyor. The heating component 8 raises the temperature of the second reaction chamber 208. Under high temperature conditions, the carbon dioxide adsorbed by the adsorbent is desorbed, and purge gas is input from the purge gas inlet 209, blowing the desorbed carbon dioxide out from the exhaust port 203.

[0038] In the circulating conveyor, the adsorbent is input from the third adsorbent inlet 302 on the first installation chamber 301 of the first circulating conveying assembly 3, and loaded into the hopper 306 at that position. The third drive motor 9 drives the sprocket 304 to rotate, which causes the transmission chain 309 to move, lifting the hopper 306 to the position of the limiter. The limiter sends a signal to the controller, which controls the electric push rod to push the telescopic plate 307, forming a guiding plate. The hopper 306 tilts onto the telescopic plate 307, guiding the adsorbent to the third adsorbent outlet 308. The adsorbent flows out from outlet 308 and enters the second circulation conveying assembly 4 for conveying. The adsorbent enters from the fourth adsorbent inlet 407 on the second installation chamber 401 in the second circulation conveying assembly 4, and is guided by the first guide plate 402 to the conveyor belt 404. Under the action of the fourth drive motor 10 and the rotating roller 405, the conveyor belt 404 conveys the adsorbent to the position of the fourth adsorbent outlet 406. The adsorbent is guided to the fourth adsorbent outlet 406 by the second guide plate 403, and then reintroduced from the fourth adsorbent outlet 406 into the first reaction chamber 101 for recycling.

[0039] During this process, the cold air conveying equipment inputs cold air from the cold air inlet 303 into the first installation chamber 301 to cool the adsorbent input into the first installation chamber 301. Then, the cold air is discharged from the cold air outlet 305 and flows back into the cold air conveying equipment.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A device for continuous adsorption and regeneration of carbon dioxide by solid amine, characterized in that, It includes an adsorption reactor (1) and a regeneration reactor (2), wherein the adsorption reactor (1) includes a first reaction chamber (101) and the regeneration reactor (2) includes a second reaction chamber (208). The first adsorbent outlet (109) provided on the first reaction chamber (101) is connected to the second adsorbent inlet (206) provided on the second reaction chamber (208); A circulation conveyor is connected between the second adsorbent outlet (204) provided on the second reaction chamber (208) and the first adsorbent inlet (103) provided on the first reaction chamber (101); Screw conveyors are provided in the first reaction chamber (101) between the first adsorbent outlet (109) and the first adsorbent inlet (103), and in the second reaction chamber (208) between the second adsorbent outlet (204) and the second adsorbent inlet (206). A flue gas conveying device is connected to a raw material flue gas inlet (106) located on the side of the first reaction chamber (101) near the first adsorbent outlet (109); a purified gas outlet (104) is located on the side of the first reaction chamber (101) near the first adsorbent inlet (103). An exhaust port (203) and a purge gas inlet (209) are provided on the side of the second reaction chamber (208) away from the first adsorbent outlet (109), and a heating component (8) is provided on the outer wall of the second reaction chamber (208).

2. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 1, characterized in that, The heating component (8) includes a fixing sleeve, which is fitted onto the outer wall of the second reaction chamber (208). A heating wire is installed inside the fixing sleeve, and a power supply component is connected to the heating wire.

3. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 2, characterized in that, A temperature sensor (6) is installed on the outer wall of the second reaction chamber (208).

4. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 1, characterized in that, A separation chamber (202) is provided on the side of the second reaction chamber (208) away from the second adsorbent inlet (206), and the separation chamber (202) is connected to the second reaction chamber (208); The exhaust port (203) is provided at the top of the separation chamber (202), and the second adsorbent outlet (204) is provided at the bottom of the separation chamber (202). The separation chamber (202) is equipped with a level sensor (7) and a pressure sensor (5).

5. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 1, characterized in that, The bottom of the first reaction chamber (101) is provided with an adsorbent collection chamber (105), which is connected to the first reaction chamber (101). The bottom of the adsorbent collection chamber (105) is provided with the first adsorbent outlet (109), and the side of the adsorbent collection chamber (105) is provided with the raw material flue gas inlet (106).

6. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 1, characterized in that, The screw conveyor includes a first conveying assembly installed in the first reaction chamber (101) and a second conveying assembly installed in the second reaction chamber (208); The first conveying assembly includes a first rotating shaft (108), on which a first spiral blade (107) is provided, and a first drive motor (102) is connected to the end of the first rotating shaft (108) near the first adsorbent inlet (103). The second conveying assembly includes a second rotating shaft (201), on which a second spiral blade (205) is provided, and a second drive motor (207) is connected to the end of the second rotating shaft (201) near the second adsorbent inlet (206).

7. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 1, characterized in that, The circulating conveyor includes a first circulating conveying component (3) and a second circulating conveying component (4); The first circulating conveying component (3) includes a first installation chamber (301), a third adsorbent inlet (302) communicating with the second adsorbent outlet (204) is provided at the bottom of the first installation chamber (301), a third adsorbent outlet (308) is provided near the top of the first installation chamber (301), a transmission component is installed in the first installation chamber (301) between the third adsorbent outlet (308) and the third adsorbent inlet (302), and a plurality of loading hoppers (306) are provided at equal intervals on the transmission component. The first installation compartment (301) is provided with a cold air outlet (305) and a cold air inlet (303), and a cold air conveying device is connected between the cold air outlet (305) and the cold air inlet (303); The first installation chamber (301) has a material guiding assembly located at the third adsorbent outlet (308); the material guiding assembly includes a telescopic plate (307), and electric push rods are installed on both sides of the telescopic plate (307). A limiter is provided in the first installation chamber (301) near its top, and the limiter is communicatively connected to a controller. The controller wire is connected to the electric push rod. The second circulating conveying assembly (4) includes a second mounting chamber (401). One end of the second mounting chamber (401) is provided with a fourth adsorbent outlet (406) communicating with the first adsorbent inlet (103) and a fourth adsorbent inlet (407) communicating with the third adsorbent outlet (308). A rotating roller (405) is provided inside the second mounting chamber (401). A conveyor belt (404) is connected to the rotating roller (405). One end of the conveyor belt (404) is located on the side of the fourth adsorbent inlet (407), and the other end of the conveyor belt (404) is located on the side of the fourth adsorbent outlet (406).

8. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 7, characterized in that, The transmission assembly includes sprockets (304) disposed in the first installation chamber (301) near its top and bottom positions. A transmission chain (309) is connected to the two sprockets (304). A connecting plate is provided on the transmission chain (309), and the loading hopper (306) is mounted on the connecting plate. A third drive motor (9) is connected to the sprocket (304).

9. The apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine according to claim 7, characterized in that, A first guide plate (402) is provided in the second installation chamber (401) between the conveyor belt (404) and the fourth adsorbent inlet (407), and a second guide plate (403) is provided in the second installation chamber (401) between the conveyor belt (404) and the fourth adsorbent outlet (406).

10. A method for continuous adsorption and regeneration of carbon dioxide by solid amine, using the apparatus for continuous adsorption and regeneration of carbon dioxide by solid amine as described in any one of claims 1 to 9, characterized in that, Includes the following steps: The adsorbent is loaded into the first reaction chamber (101) of the adsorption reactor (1) through the first adsorbent inlet (103) via a circulation conveyor; Start the screw conveyor in the first reaction chamber (101) to gradually transport the adsorbent from the first adsorbent inlet (103) of the first reaction chamber (101) to the first adsorbent outlet (109). The adsorbent flows from the second adsorbent inlet (206) into the second reaction chamber (208) in the regeneration reactor (2). Start the screw conveyor in the second reaction chamber (208) to gradually transport the adsorbent from the second adsorbent inlet (206) to the second adsorbent outlet (204) of the second reaction chamber (208). The adsorbent flows into the circulation conveyor and the circulation conveyor transports the adsorbent back to the first adsorbent inlet (103) and inputs it into the first reaction chamber (101) so that the adsorbent is transported in a circulation manner. Start the flue gas conveying equipment and input the flue gas from the raw material flue gas inlet (106) into the first reaction chamber (101). The adsorbent in the first reaction chamber (101) absorbs the carbon dioxide in the flue gas, and the flue gas after the carbon dioxide is absorbed is discharged from the purified gas outlet (104). After absorbing carbon dioxide, the adsorbent enters the second reaction chamber (208) under the conveying of the screw conveyor. The heating component (8) raises the temperature of the second reaction chamber (208). Under high temperature conditions, the carbon dioxide adsorbed by the adsorbent undergoes desorption. Purge gas is input from the purge gas inlet (209) and the desorbed carbon dioxide is blown out from the exhaust port (203).

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