A modular solid amine continuous carbon capture device

Abstract

The present invention provides a modular solid amine continuous carbon capture device, including a main control module, a flue gas module, a heat exchange module and capture modules of multiple adsorption levels; capture modules of different levels are designed differently; the capture module has multiple adsorption cavities of different levels, the cavity contains solid amine, and pores are provided on the upper and lower walls of the cavity, and the different levels of adsorption cavities are designed differently in terms of parameters of solid amine and pores; the heat exchange module penetrates the adsorption cavities of each capture module through a heat exchange tube, and the heat exchange tubes between some capture modules are connected to form a capture module to achieve energy cascade utilization; the flue gas module inputs flue gas to the capture module through an air intake pipe, and various parameters of the air intake pipe are designed differently according to the adsorption level. The capture modules of different levels of the present invention are designed differently, and the modules can be adaptively selected according to the scale of the flue gas to be suitable for flue gas carbon capture scenarios of different levels; multiple capture modules can realize the simultaneous adsorption and desorption operations.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide capture, and in particular to a modular solid-state amine continuous carbon capture device. Background Art

[0002] As a new CO2 capture material, solid amine adsorbent avoids the high heat consumption caused by latent heat of gasification due to the absence of liquid water in the capture process, and its CO2 capture energy consumption is generally low. At present, most of the research on solid amine capture method focuses on the production of solid amine materials and material properties, and there is little research on the whole process system and capture equipment.

[0003] The existing capture equipment currently in use generally requires differentiated design and modification when faced with flue gas carbon capture scenarios of different scales, that is, a specific device and process flow is proposed for a specific capture project, and the structure and parameters of the equipment need to vary with the needs of different projects. This results in the need for differentiated design, manufacturing and installation of processes and equipment for different projects, increasing project costs and construction periods. Once the equipment selection is determined, it lacks the corresponding applicability for flue gas load fluctuations. In addition, the existing capture equipment is also unable to fully utilize the heat and cold during the heating, desorption and cooling process of solid amines, resulting in generally high energy consumption. In terms of operating procedures, existing capture equipment generally cannot achieve simultaneous desorption and adsorption operations, resulting in poor overall continuity and stability of the system, which is not conducive to industrial applications.

[0004] Based on this, it is urgent to propose a solution to solve at least one of the above problems. Summary of the invention

[0005] In order to overcome the defects of the above-mentioned prior art, the present invention provides a modular solid amine continuous carbon capture device. The present invention is provided with capture modules of various magnitudes with differentiated designs, and can flexibly select which capture modules to input the flue gas into according to the magnitude scale of the flue gas, so it can be applicable to flue gas carbon capture scenarios of different magnitudes.

[0006] The specific technical solutions are as follows:

[0007] A modular solid-state amine continuous carbon capture device, comprising: a flue gas module, a heat exchange module and capture modules with multiple adsorption levels;

[0008] Each of the capture modules is provided with a plurality of adsorption cavities with decreasing adsorption levels from bottom to top, each adsorption cavity contains solid amine for adsorbing carbon dioxide, and each adsorption cavity has pores on its upper and lower walls, and the total amount of solid amine in each adsorption cavity, the particle size of the solid amine, and the pore distribution density and pore size between adjacent adsorption cavities are all related to the adsorption level; the capture module is used to perform the adsorption operation of carbon dioxide at a preset adsorption temperature and the desorption operation of carbon dioxide at a preset desorption temperature;

[0009] The flue gas module is provided with an air inlet pipe extending from below the adsorption chamber with the highest adsorption level in each capture module, for inputting flue gas into the capture module and allowing the flue gas to enter each adsorption chamber in sequence according to the order of adsorption level; the air inlet pipe is divided into one or more gas passages, and each gas passage is provided with gas ports; the number of gas passages of the air inlet pipe, the distribution density of the gas ports and the aperture of the gas ports are all related to the adsorption level;

[0010] The heat exchange module is connected to each capture module to provide different temperature conditions for the adsorption chamber.

[0011] In a specific embodiment, the heat exchange module penetrates the adsorption cavity of each capture module through a heat exchange tube, the heat exchange tubes between some capture modules are connected, and multiple capture modules connected by heat exchange tubes constitute a group of capture modules; each capture module in the capture module is divided into heat exchange levels to realize the step-by-step utilization of heat exchange energy; the heat exchange level of each capture module is related to the adsorption level.

[0012] In a specific embodiment, it also includes a main control module;

[0013] The main control module controls the valves of the air inlet pipes corresponding to the capture modules respectively, and controls the valves of the heat exchange pipes corresponding to the capture modules with the highest heat exchange level in each capture module, so as to select a capture module with a corresponding adsorption level according to the flue gas level, and control the operation of the flue gas module and the heat exchange module, so that different capture modules have different temperature conditions, thereby realizing the synchronous operation of adsorption and desorption operations.

[0014] In a specific embodiment, each of the capture modules is provided with a plurality of bearing steel plates from bottom to top, and the adsorption cavity is formed between adjacent bearing steel plates; the distance between adjacent bearing steel plates is related to the adsorption level of the formed adsorption cavity; the bearing steel plates are recessed upward to form a plurality of ventilation grooves, and the air holes are opened on the side walls of the ventilation grooves.

[0015] In a specific embodiment, the heat exchange tube includes a heat exchange input tube, a heat exchange output tube, a plurality of first heat exchange branch tubes and a plurality of second heat exchange branch tubes;

[0016] The heat exchange input pipe and the heat exchange output pipe are both penetrated by a plurality of first heat exchange branch pipes arranged in sequence, and the first heat exchange branch pipe on the heat exchange input pipe corresponds to the first heat exchange branch pipe on the heat exchange output pipe; a plurality of second heat exchange branch pipes arranged in sequence are connected between two corresponding first heat exchange pipes; a plurality of second heat exchange branch pipes vertically penetrate a plurality of the bearing steel plates; and the heat exchange pipes between some capture modules are connected by the heat exchange input pipe being connected to the heat exchange output pipe.

[0017] In a specific embodiment, a plurality of heat exchange fins are vertically spaced apart on each of the plurality of the second heat exchange branch pipes, and the heat exchange fins are in a "M"-shaped structure.

[0018] In a specific embodiment, the plurality of ventilation grooves on the same bearing steel plate are arranged adjacent to each other, and the distance between adjacent ventilation grooves is between 120 mm and 180 mm; among the adjacent bearing steel plates, the ventilation groove on the upper bearing steel plate has a greater depression depth, and the number of pores in the ventilation groove is greater and the pore diameter is smaller.

[0019] In a specific embodiment, the pores are opened obliquely, and one end of the pores close to the solid amine is lower than the other end of the vent.

[0020] In a specific embodiment, the gas port is opened at the lower part of the gas passage.

[0021] In a specific embodiment, the flue gas module has an exhaust pipe and a carbon dioxide emission pipe extending from above the adsorption chamber of the lowest adsorption level in each capture module, so as to discharge the flue gas adsorbed by the solid amine through the exhaust pipe, and discharge the carbon dioxide gas generated by the desorption of the solid amine through the carbon dioxide emission pipe; the main control module controls the valves of each exhaust pipe and the valves of each carbon dioxide emission pipe.

[0022] In a specific embodiment, the smoke module further includes an exhaust pipe, a pressurizing device and a vacuum device; the pressurizing device and the vacuum device are signal-connected to the main control module;

[0023] The booster device is connected to each of the intake pipes to pressurize the input flue gas; the exhaust pipe is connected to each of the exhaust pipes to provide power for the exhaust of the adsorbed flue gas and collect the adsorbed flue gas; the vacuum device is connected to each of the carbon dioxide emission pipes to extract the carbon dioxide gas generated by the desorption of solid amine.

[0024] In a specific embodiment, it also includes a display module, a carbon dioxide monitor, a temperature sensor, and a pressure sensor that are communicatively connected to the main control module;

[0025] The pressure sensor and the temperature sensor are provided in each of the capture modules, and the carbon dioxide monitor is provided in each of the exhaust pipes; the display module is used to display the magnitude of the flue gas to be adsorbed, the ambient temperature and solid amine temperature in the capture module, and the air pressure in the exhaust pipe.

[0026] The present invention has at least the following beneficial effects:

[0027] The modular solid-state amine continuous carbon capture device provided by the present invention can flexibly match the number of capture modules and the adsorption level according to the magnitude of the flue gas to be adsorbed. By differentially designing capture modules of different magnitudes, dividing the adsorption levels of the adsorption chambers inside the capture modules, and individually configuring the number of combinations of capture modules, the applicability of the device is increased, so that the device can be applied to flue gas carbon capture scenarios of different magnitudes. In addition, based on the connection of the heat exchange pipes between the capture modules, the capture modules can form a capture module. By dividing the heat exchange levels of each capture module in the capture module, the cascade utilization of energy is achieved, energy consumption is reduced, and it is more environmentally friendly.

[0028] Furthermore, in practical applications, the heat exchange module can realize the synchronous operation of adsorption and desorption operations of different capture modules by providing different condition temperatures for different capture modules, so that the flue gas carbon capture of the device is continuous and stable, and more suitable for industrial applications. In addition, the capture module can be designed, manufactured and installed in a standardized manner, which can reduce engineering costs and construction periods, and can quickly adjust the number and magnitude of modules in the device. Based on the setting of the exhaust pipe, the present invention can use the chimney effect to generate suction to provide part of the power source, thereby reducing the energy consumption of the device. Through the combined effect of the multi-layer steel plate and the "M"-shaped heat exchange fins, the heat exchange efficiency is enhanced, so that a large amount of reaction heat generated during the adsorption process can be taken away in time, so that the present invention has the potential for large-scale industrial application, and can also shorten the time of the adsorption process and the cooling process. In addition, the "M"-shaped heat exchange fins can also provide a certain support for the solid amine to reduce the pressure on the lower layer of the solid amine, thereby reducing the loss of solid amine caused by compression and crushing, which can reduce the consumption of solid amine during the operation process and reduce the operation cost. The reasonable design of the intake pipe structure makes the flue gas intake more uniform, the flue gas contacts the solid amine more fully, and the adsorption efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of the connection relationship of components of the device provided by the present invention;

[0031] Figure 2 is a side perspective schematic diagram of a capture module;

[0032] Figure 3 for Figure 2 Middle AA section;

[0033] Figure 4 for Figure 2 Middle BB section;

[0034] Figure 5 It is a schematic diagram of the overall structure of the capture module framework;

[0035] Figure 6 Figure 2 Detail C in the figure;

[0036] Figure 7 Schematic diagram of the structure of the heat exchange tube inside the capture module.

[0037] Reference numerals:

[0038] 1-boosting device; 2-vacuum device; 3-exhaust pipe; 4-capture module; 5-flue gas distributor; 51-gas passage; 52-air port; 6-heat exchange input pipe; 7-first heat exchange branch pipe; 8-second heat exchange branch pipe; 9-heat exchange output pipe; 10-heat exchange fins; 11-bearing steel plate; 12-air holes; 13-venting grooves; 14-intake control valve; 15-exhaust control valve; 16-carbon dioxide emission valve; 17-hot water output valve; 18-hot water input valve; 19-cold water output valve; 20-cold water input valve; 21-capture module frame; 22-installation space; 23-adsorption chamber; 24-exhaust pipe; 25-carbon dioxide emission pipe. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Please refer to Figures 1 to 7 In a preferred embodiment of the present invention, a modular solid-state amine continuous carbon capture device is provided, which can be applied to flue gas carbon capture scenarios of different magnitudes, and the device includes: a main control module, a flue gas module, a heat exchange module, and capture modules 4 of multiple adsorption magnitudes. The present invention makes a differentiated design for the capture modules 4 of different adsorption magnitudes, and the capture modules 4 of higher adsorption magnitudes can capture more carbon dioxide flue gas. The main control module can control the flue gas module to deliver flue gas to a specific capture module 4 and control the heat exchange module to deliver heat medium and refrigerant to a specific capture module 4 according to the magnitude scale of the flue gas to be adsorbed, and by combining capture modules 4 of different numbers and different adsorption magnitudes, the overall capture capacity of the capture module 4 can be flexibly adapted to the magnitude scale of the flue gas, so that the device can be applied to flue gas carbon capture scenarios of different magnitudes.

[0043] For details, please refer to Figure 2 , each capture module 4 is provided with a plurality of adsorption cavities 23 with decreasing adsorption levels from bottom to top. Each adsorption cavity 23 contains solid amine for adsorbing carbon dioxide, and each adsorption cavity 23 has pores 12 on its upper and lower walls. The capture module 4 can be divided into different adsorption levels according to the total amount of solid amine contained in the plurality of adsorption cavities 23 and the particle size of the solid amine. Among them, the total amount of solid amine is proportional to the adsorption level of the capture module 4, and the particle size of the solid amine is inversely proportional to the adsorption level of the capture module 4.

[0044] In the same capture module 4, there are also differences in the adsorption cavities 23 of different adsorption levels. Specifically, in each adsorption cavity 23 of the same capture module 4, the total amount of solid amine, the solid amine particle size, and the distribution density and pore size of the pores 12 between adjacent adsorption cavities are all related to the adsorption level of the adsorption cavity 23.

[0045] Exemplarily, the adsorption chamber 23 with a high adsorption level may contain more total solid amine and smaller particle size of solid amine than the adsorption chamber 23 with a low adsorption level, thereby providing more adsorption sites. In some embodiments, the total amount of solid amine and the particle size of solid amine in the adsorption chambers 23 with different adsorption levels may be the same. As for the pores 12, the pores 12 of the adsorption chamber 23 with a higher adsorption level may have a larger pore size, and the pores 12 of the adsorption chamber 23 with a lower adsorption level may have a smaller pore size and a greater distribution density of the pores 12. The reason is that the adsorption chamber 23 with a high adsorption level is located at a lower layer in the capture module 4, and the flue gas enters it first. At this time, the carbon dioxide content in the flue gas is large, and the mass transfer driving force is large. Therefore, pores 12 with larger pore size and smaller density are selected to reduce system resistance and facilitate flue gas entry. As the carbon dioxide in the flue gas is adsorbed, the flue gas enters the adsorption chamber 23 with a lower adsorption level. At this time, the carbon dioxide concentration in the flue gas decreases. In order to improve the mass transfer efficiency, pores 12 with smaller pore sizes and greater density are selected so that the flue gas has the characteristics of multiple and small strands when entering, so as to enhance the mass transfer between the flue gas and the solid amine.

[0046] In this embodiment, please refer to Figure 2 , each capture module 4 is provided with a plurality of bearing steel plates 11 from bottom to top, and the adsorption chamber 23 is formed between adjacent bearing steel plates 11. For example, the edge of the bearing steel plate 11 can be sealed and connected to the inner wall of the capture module 4, so that the flue gas can only pass through the pores 12, which is convenient for the solid amine to adsorb the flue gas. The distance between adjacent bearing steel plates 11 is related to the adsorption level of the formed adsorption chamber 23. The higher the adsorption level, the greater the distance between adjacent bearing steel plates 11, so that it can accommodate more solid amines. Figure 2 and Figure 6 The bearing steel plate 11 is recessed upward to form a plurality of ventilation grooves 13, and the air holes 12 are provided on the side walls of the ventilation grooves 13. The ventilation grooves 13 are recessed upward so that the concave side thereof does not directly contact the solid amine, and the solid amine does not sink into the ventilation grooves 13, thereby preventing the solid amine from falling into the lower adsorption cavity 23.

[0047] Furthermore, a plurality of ventilation grooves 13 on the same bearing steel plate 11 are arranged adjacent to each other, and the distance between adjacent ventilation grooves 13 is preferably between 120 mm and 180 mm. In addition, among the adjacent bearing steel plates 11, the ventilation grooves 13 on the upper bearing steel plate 11 have a greater depression depth, and the number of pores 12 in the ventilation grooves 13 is greater, the distribution density is greater, and the pore size is smaller. As mentioned above, during the rising process of the flue gas, the carbon dioxide therein is gradually adsorbed, resulting in a decrease in the mass transfer efficiency with the solid amine. Therefore, the pore size, number, and density of the ventilation holes 12 on the upper bearing steel plate 11 are made smaller, the number is greater, and the density is greater, so that the flue gas has the characteristics of multiple and small strands when passing through, thereby ensuring that the flue gas can still maintain a good mass transfer efficiency with the solid amine when entering the adsorption cavity 23 with a lower adsorption level.

[0048] Further, in this embodiment, please refer again to Figure 6 The air hole 12 is obliquely opened on the side wall of the ventilation groove 13, and one end of the air hole 12 close to the solid amine is lower than the other end of the air hole 12. It can be understood that such an inclined design can prevent solid amine particles from falling out of the air hole 12. Optionally, the inclination angle R of the air hole 12 can range from 5° to 15°, preferably 10°. The inclination angle R is the angle between the air hole 12 and the horizontal plane.

[0049] In this embodiment, the heat exchange module penetrates the adsorption chamber 23 of each capture module 4 through a heat exchange tube. The capture module 4 is used to perform an adsorption operation of carbon dioxide at a preset adsorption temperature and a desorption operation of carbon dioxide at a preset desorption temperature. The heat exchange module can input a refrigerant into the heat exchange tube so that the capture module 4 reaches a preset adsorption temperature and realizes the adsorption of carbon dioxide in the flue gas by the solid amine. The heat exchange module can also input a heat medium into the heat exchange tube so that the capture module 4 reaches a preset desorption temperature and realizes the desorption of carbon dioxide in the solid amine.

[0050] Exemplarily, the heat medium includes but is not limited to hot water, water vapor or thermal oil, and the cooling medium includes but is not limited to cold water, thermal oil, etc.

[0051] Please refer to Figure 1, the heat exchange pipes between some of the capture modules 4 are connected, and a plurality of capture modules 4 connected by heat exchange pipes form a group of capture modules. Each capture module 4 in the capture module is divided into heat exchange levels, and the heat exchange module is used to transport refrigerant and heat medium to the capture module 4 with the highest heat exchange level in the capture module. It can be understood that the heat exchange module first transports the heat medium and refrigerant to the heat exchange pipe of a capture module 4, and then allows the heat medium and refrigerant to enter the plurality of heat exchange pipes connected in sequence in order, so as to realize the step-by-step utilization of heat exchange energy, reduce the use of heat medium and refrigerant, and be more environmentally friendly. The heat exchange level of the capture module 4 that receives the heat medium and refrigerant first is higher, and the heat exchange level of each capture module 4 is related to its own adsorption level. Preferably, the higher the adsorption level of the capture module 4, the higher its heat exchange level, that is, the heat medium and refrigerant are preferentially transported to the heat exchange pipe of the capture module 4 with a high adsorption level, and then transported to the heat exchange pipes of other capture modules 4 with lower adsorption levels.

[0052] For details, please refer to Figure 7 The heat exchange tube includes a heat exchange input tube 6, a heat exchange output tube 9, a plurality of first heat exchange branch tubes 7 and a plurality of second heat exchange branch tubes 8. The heat exchange input tube 6 and the heat exchange output tube 9 are both passed through with a plurality of first heat exchange branch tubes 7 arranged in sequence in a horizontal direction perpendicular to the heat exchange input tube 6 and the heat exchange output tube 9. The first heat exchange branch tube 7 on the heat exchange input tube 6 corresponds to the first heat exchange branch tube 7 on the heat exchange output tube 9. The two corresponding first heat exchange branch tubes 7 are connected with a plurality of second heat exchange branch tubes 8 arranged in sequence. The plurality of second heat exchange branch tubes 8 are vertically passed through a plurality of bearing steel plates 11, thereby forming a heat exchange tube matrix. This structure can well improve the heat exchange efficiency. The heat exchange module is used to input heat medium and refrigerant into the heat exchange input tube 6, and the heat medium and refrigerant after heat exchange are finally output through the heat exchange output tube 9. The heat exchange tubes between some capture modules 4 are connected by connecting the heat exchange input tube 6 on one side with the heat exchange output tube 9 on the other side, thereby performing energy cascade utilization. Optionally, the distance between adjacent second heat exchange branches 8 may be between 100 mm and 300 mm.

[0053] Preferably, the bearing steel plate 11 can also contact and be fixedly connected to the second heat exchange branch pipe 8. The bearing steel plate 11 is in contact with the second heat exchange pipe, which further enhances the heat exchange efficiency, so that a large amount of reaction heat generated during the adsorption process can be taken away in time, making the device have the potential for large-scale industrial application. The bearing steel plate 11 is connected to the second heat exchange pipe, which further improves the structural stability of the bearing steel plate 11.

[0054] For further information, please refer to Figure 4 and Figure 7, multiple heat exchange fins 10 are vertically spaced on the multiple second heat exchange branch pipes 8, and the heat exchange fins 10 are in a "M"-shaped structure. On the one hand, the heat exchange fins 10 in the "M"-shaped structure can provide a certain support for the solid amine, and reduce the pressure on the lower layer of solid amine, thereby reducing the loss of solid amine caused by compression and crushing, which can reduce the consumption of solid amine during the operation process and reduce the operation cost; on the other hand, the heat exchange fins 10 in the "M"-shaped structure can also significantly enhance the heat exchange efficiency, so as to shorten the time required for adsorption and desorption operations and improve the operation efficiency. Optionally, the distance between adjacent heat exchange fins 10 on the same second heat exchange branch pipe 8 can range from 50mm to 100mm. Optionally, the thickness of the bearing steel plate 11 can range from 3mm to 6mm.

[0055] In this embodiment, the flue gas module extends an air inlet pipe below the adsorption chamber 23 with the highest adsorption level in each capture module 4, which is used to input flue gas into the capture module 4 and allow the flue gas to enter each adsorption chamber 23 in order of adsorption level, so as to be adsorbed by the solid amine in the adsorption chamber 23. Figure 2 and Figure 3 The air inlet pipe is divided into one or more gas passages 51, and each gas passage 51 is provided with a gas port 52. The number of gas passages 51 of the air inlet pipe, the distribution density of the gas ports 52, and the aperture of the gas ports 52 are all related to the adsorption level of the capture module 4.

[0056] Exemplarily, the air inlet pipe may be a flue gas distributor 5 having a plurality of gas passages 51 . Through the configuration of the flue gas distributor 5 , the flow rate of the input flue gas may be controlled between 0.1 m / s and 0.5 m / s.

[0057] For example, compared with the capture module 4 with a low adsorption level, the capture module 4 with a high adsorption level has a larger number of gas passages 51 in the air inlet pipe, a higher distribution density of the gas ports 52, and a larger aperture of the gas ports 52, so that the flue gas can more easily enter the capture module 4, meet the input requirements of a larger scale of flue gas, and make the flue gas intake efficiency adapt to a larger number of solid amines therein, so as to achieve the adsorption of a larger scale of flue gas. In a specific embodiment, the gas port 52 is opened at the lower part of the gas passage 51, so as to prevent the solid amine accidentally dropped from the upper part from blocking the gas port 52, and the reliability of the device is better.

[0058] In addition, the flue gas module also has an exhaust pipe 24 and a carbon dioxide emission pipe 25 extending from the top of the adsorption chamber with the lowest adsorption level in each capture module 4, so that the flue gas adsorbed by the solid amine can be discharged through the exhaust pipe 24, and the carbon dioxide gas generated by the desorption of the solid amine can be discharged through the carbon dioxide emission pipe 25.

[0059] For further information, please refer to Figure 1, the flue gas module also includes an exhaust pipe 3, and a booster device 1 and a vacuum device 2 controlled by the main control module. The booster device 1 is turned on during the adsorption operation, and the vacuum device 2 is turned on during the desorption operation. The booster device 1 is connected to the air inlet pipe of each capture module 4, the vacuum device 2 is connected to the carbon dioxide discharge pipe of each capture module 4, and the exhaust pipe 3 is connected to the exhaust pipe of each capture module 4. Among them, the booster device 1 can be, for example, a booster fan, which can pressurize the flue gas to be adsorbed so that the flue gas can enter the capture module 4 more easily. The vacuum device 2 can be, for example, a vacuum pump. When the solid amine is desorbed, the vacuum pump can be used to evacuate the inside of the capture module 4 to promote the desorption operation of the solid amine, and can also drive the carbon dioxide generated by the desorption to be discharged. The exhaust pipe 3 can collect the adsorbed flue gas, and at the same time, according to the chimney effect, it can generate suction to provide part of the power source, thereby reducing the working pressure of the booster device 1 and reducing the energy consumption of the system.

[0060] In this embodiment, the main control module controls the valves of the intake pipe, exhaust pipe, and carbon dioxide emission pipe corresponding to each capture module 4, and the valves of the heat exchange pipe corresponding to the capture module 4 with the highest heat exchange level in the capture module, so that the specific valves can be controlled to open or close according to the flue gas level to select the capture modules 4 of the corresponding number and adsorption level, and control the operation of the flue gas module and the heat exchange module, so that different capture modules have different temperature conditions, and realize the synchronous operation of adsorption and desorption operations. Optionally, the main control module can be any programmable control unit, such as a single-chip microcomputer or a PLC.

[0061] For details, please refer to Figure 1 The air intake pipe of each capture module 4 is connected to an air intake control valve 14, the exhaust pipe of each capture module 4 is connected to an exhaust control valve 15, and the carbon dioxide emission pipe of each capture module 4 is connected to a carbon dioxide emission valve 16. Multiple capture modules 4 can be arranged vertically and divided into two groups of capture modules, and the heat exchange pipes of the capture modules 4 in the same group are connected in sequence. Please refer to Figure 5 , and may also include a capture module frame 21 of standardized design, the capture module frame 21 forming a plurality of installation spaces 22 distributed vertically, and a plurality of capture modules 4 are respectively arranged in the installation space 22 corresponding thereto, so as to achieve vertical stacking in sequence. In practical applications, the capture modules 4 may also be of standardized design, so that when stacked and installed, the capture modules 4 can be quickly installed into the installation space 22, making the installation more convenient and improving the installation efficiency.

[0062] In this embodiment, the heat exchange module is connected to the heat exchange pipeline of the topmost capture module 4 in the two capture modules through two pipelines, that is, connected to the capture module 4 with the highest heat exchange level. Each pipeline is connected to the hot water output end of the heat exchange module through a hot water output valve 17, and each pipeline is connected to the cold water output end of the heat exchange module through a cold water output valve 19. The hot water output valve 17 and the cold water output valve 19 are the valves corresponding to the heat exchange pipe of the capture module 4 with the highest heat exchange level mentioned above. The heat exchange pipeline of the bottommost capture module 4 in the same capture module group is also connected to a pipeline respectively, and each pipeline is connected to the hot water input end of the heat exchange module through a hot water input valve 18, and each pipeline is connected to the cold water input end of the heat exchange module through a cold water input valve 20.

[0063] When in use, the main control module controls the air intake control valve 14 and the exhaust control valve 15 corresponding to all the capture modules 4 of one group of capture modules to open, and opens the cold water output valve 19 and the cold water input valve 20 corresponding to the capture module, so that cold water (cold water can be replaced by other refrigerants) enters the heat exchange pipeline of the capture module 4 of the group, and the flue gas to be adsorbed enters the capture module 4 through the air intake pipe for adsorption operation, and the adsorbed flue gas is discharged from the exhaust pipe. After the adsorption operation is completed, the main control module controls the air intake control valve 14, the exhaust control valve 15, the cold water output valve 19 and the cold water input valve 20 to close, and opens the corresponding carbon dioxide discharge valve 16, the hot water input valve 18 and the hot water output valve 17 to desorb the solid amine, so that the carbon dioxide generated by desorption is discharged to the designated location through the carbon dioxide discharge pipe for collection. While the capture module is switched to the desorption operation, the other capture module starts the flue gas adsorption operation in the above manner, and the two groups of capture modules alternately perform desorption and adsorption, and the alternating cycle can be specifically set according to the actual situation. Adsorption and desorption operations are performed alternately between different capture modules, thereby achieving simultaneous adsorption and desorption operations, making the flue gas carbon capture of the device continuous and stable, and more suitable for industrial applications.

[0064] Referring to Tables 1 to 3 below, some configurations of capture modules 4 in actual applications are shown.

[0065] Table 1 Capture module parameters

[0066]

[0067] Table 2 Ventilation slot and vent hole parameters

[0068]

[0069] Note: The layer number column indicates the number of load-bearing steel plates from bottom to top in the capture module.

[0070] Table 3 Capture module configuration under several scale conditions

[0071]

[0072] Note: 1. The operation system refers to the number of capture modules for adsorption and desorption. For example, "2+2" means that 2 capture modules are for adsorption and 2 capture modules are for desorption. 2. The switching cycle refers to the time for switching between adsorption and desorption. 2h means adsorption for 2h, desorption for 2h, and so on.

[0073] Table 3 shows that capture modules 4 of the same adsorption level form a capture module. In practical applications, capture modules 4 of different levels can be coordinated, for example, a STGD-600 capture module and a STGD-150 capture module form a capture module.

[0074] In a specific embodiment, it may also include a display module, a carbon dioxide monitor, a temperature sensor and a pressure sensor that are communicatively connected to the main control module.

[0075] Specifically, each capture module 4 is provided with a pressure sensor and a temperature sensor, and each exhaust pipeline is provided with a carbon dioxide monitor. During the continuous adsorption operation, the solid amine will gradually be adsorbed to saturation, so the carbon dioxide concentration of the flue gas discharged from the exhaust pipe will gradually increase. When the carbon dioxide concentration reaches a preset value, the carbon dioxide monitor will send a signal to the main control module, and the main control module controls the air intake control valve 14, the exhaust control valve 15, the cold water input valve 20 and the cold water output valve 19 to close based on this signal, and turns on the carbon dioxide discharge valve 16, the hot water input valve 18 and the hot water output valve 17 to perform the solid amine desorption operation. During the continuous desorption process, the carbon dioxide in the solid amine is gradually desorbed. Since the vacuum device 2 continuously extracts carbon dioxide gas, the air pressure in the capture module 4 will gradually decrease. When the pressure sensor detects that the air pressure in the capture module 4 is lower than the preset value, it sends a signal to the main control module. Based on this signal, the main control module closes the carbon dioxide discharge valve 16, the hot water input valve 18 and the hot water output valve 17, reopens the cold water input valve and the cold water output valve 19, and cools down the solid amine. When the temperature sensor detects that the temperature of the solid amine is lower than the preset value, it sends a signal to the main control module. Based on this signal, the main control module reopens the intake control valve 14 and the exhaust control valve 15 to perform the adsorption operation again. This embodiment can be cycled in this way to achieve an automated continuous carbon capture operation.

[0076] The display module is mainly used to display the magnitude of the flue gas to be adsorbed, the ambient temperature in the capture module 4 and the air pressure in the exhaust pipe, so as to facilitate the operator to monitor and manage the relevant situations.

[0077] In summary, the modular solid-state amine continuous carbon capture device provided by the present invention can flexibly match the number and adsorption level of the capture modules 4 according to the magnitude of the flue gas to be adsorbed, and can increase the applicability of the device by differentially designing the capture modules 4 of different magnitudes, dividing the adsorption levels of the adsorption chamber 23 inside the capture module 4, and individually configuring the number of combinations of the capture modules 4, so that the device can be applied to flue gas carbon capture scenarios of different magnitudes. In addition, based on the connection of the heat exchange pipes between the capture modules 4, the capture modules 4 can form a capture module, and by dividing the heat exchange levels of each capture module 4 in the capture module, the device also realizes the cascade utilization of energy, reduces energy consumption, and is more environmentally friendly.

[0078] Furthermore, in practical applications, the heat exchange module can realize the synchronous operation of the adsorption operation and desorption operation of different capture modules by providing different condition temperatures for different capture modules, so that the flue gas carbon capture of the device has continuity and stability, and is more suitable for industrial applications. In addition, the capture module 4 can be designed, manufactured and installed in a standardized manner, which can reduce engineering costs and construction periods, and can quickly adjust the number and magnitude of modules in the device. Based on the setting of the exhaust pipe 3, the present invention can use the chimney effect to generate suction to provide part of the power source, thereby reducing the energy consumption of the device. Through the joint action of the multi-layer steel plate and the "M"-shaped heat exchange fins 10, the heat exchange efficiency is enhanced, so that a large amount of reaction heat generated during the adsorption process can be taken away in time, so that the present invention has the potential for large-scale industrial application, and can also shorten the time of the adsorption process and the cooling process. In addition, the "M"-shaped heat exchange fins 10 can also provide a certain support for the solid amine to reduce the pressure on the lower layer of the solid amine, thereby reducing the loss of the solid amine caused by compression and crushing, which can reduce the consumption of solid amine during the operation and reduce the operation cost. The reasonable design of the intake pipe structure makes the flue gas intake more uniform, the flue gas contacts the solid amine more fully, and the adsorption efficiency is improved.

[0079] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A modular solid amine continuous carbon capture device, characterized in that: Applicable to flue gas carbon capture scenarios of different magnitudes, including: flue gas module, heat exchange module and capture modules of multiple adsorption magnitudes; Each of the capture modules is provided with a plurality of adsorption cavities with decreasing adsorption levels from bottom to top, each adsorption cavity contains solid amine for adsorbing carbon dioxide, and the upper and lower walls of each adsorption cavity are provided with pores, and the total amount of solid amine in each adsorption cavity, the solid amine particle size, and the pore distribution density and pore diameter between adjacent adsorption cavities are all related to the adsorption level; wherein the total amount of solid amine and the pore diameter are positively correlated with the adsorption level, and the solid amine particle size and the pore distribution density are negatively correlated with the adsorption level; the capture module is used to perform the adsorption operation of carbon dioxide at a preset adsorption temperature, and to perform the desorption operation of carbon dioxide at a preset desorption temperature; The flue gas module is provided with an air inlet pipe extending from below the adsorption chamber with the highest adsorption level in each capture module, for inputting flue gas into the capture module and allowing the flue gas to enter each adsorption chamber in sequence according to the order of adsorption level; the air inlet pipe is divided into one or more gas passages, and each gas passage is provided with gas ports; the number of gas passages of the air inlet pipe, the distribution density of the gas ports and the aperture of the gas ports are all related to the adsorption level; the number of gas passages, the distribution density of the gas ports and the aperture of the gas ports are all positively correlated with the adsorption level; The heat exchange module is connected to each capture module to provide different temperature conditions for the adsorption cavity; the heat exchange module penetrates the adsorption cavity of each capture module through a heat exchange tube, and the heat exchange tubes between some capture modules are connected, and multiple capture modules connected by heat exchange tubes constitute a group of capture modules; each capture module in the capture module is divided into a heat exchange level to realize the step-by-step utilization of heat exchange energy; the heat exchange level of each capture module is related to the adsorption level; the heat exchange level is positively correlated with the adsorption level.

2. A modular solid amine continuous carbon capture device according to claim 1, characterized in that: It also includes a main control module; The main control module controls the valves of the air inlet pipes corresponding to the capture modules respectively, and controls the valves of the heat exchange pipes corresponding to the capture modules with the highest heat exchange level in each capture module, so as to select a capture module with a corresponding adsorption level according to the flue gas level, and control the operation of the flue gas module and the heat exchange module, so that different capture modules have different temperature conditions, thereby realizing the synchronous operation of adsorption and desorption operations.

3. A modular solid amine continuous carbon capture device according to claim 1, characterized in that: Each of the capture modules is provided with a plurality of bearing steel plates from bottom to top, and the adsorption cavity is formed between adjacent bearing steel plates; the distance between adjacent bearing steel plates is related to the adsorption level of the formed adsorption cavity; the bearing steel plates are recessed upward to form a plurality of ventilation grooves, and the air holes are opened on the side walls of the ventilation grooves.

4. A modular solid amine continuous carbon capture device according to claim 3, characterized in that: The heat exchange tube comprises a heat exchange input tube, a heat exchange output tube, a plurality of first heat exchange branch tubes and a plurality of second heat exchange branch tubes; The heat exchange input pipe and the heat exchange output pipe are both penetrated by a plurality of first heat exchange branch pipes arranged in sequence, and the first heat exchange branch pipe on the heat exchange input pipe corresponds to the first heat exchange branch pipe on the heat exchange output pipe; a plurality of second heat exchange branch pipes arranged in sequence are connected between two corresponding first heat exchange pipes; a plurality of second heat exchange branch pipes vertically penetrate a plurality of the bearing steel plates; and the heat exchange pipes between some capture modules are connected by the heat exchange input pipe being connected to the heat exchange output pipe.

5. A modular solid amine continuous carbon capture device according to claim 4, characterized in that: A plurality of heat exchange fins are vertically spaced apart on each of the plurality of second heat exchange branch pipes, and the heat exchange fins are in a "M"-shaped structure.

6. A modular solid amine continuous carbon capture device according to claim 3, characterized in that: The multiple ventilation grooves on the same load-bearing steel plate are arranged adjacent to each other, and the distance between adjacent ventilation grooves is between 120 mm and 180 mm; among the adjacent load-bearing steel plates, the ventilation groove on the upper load-bearing steel plate has a greater depression depth, and the number of pores in the ventilation groove is greater and the pore diameter is smaller.

7. A modular solid amine continuous carbon capture device according to claim 1 or 3, characterized in that: The pores are opened obliquely, and one end of the pores close to the solid amine is lower than the other end of the pores.

8. The modular solid amine continuous carbon capture device according to claim 1, characterized in that: The gas port is opened at the lower part of the gas passage.

9. A modular solid amine continuous carbon capture device according to claim 2, characterized in that: The flue gas module has an exhaust pipe and a carbon dioxide emission pipe extending from the top of the adsorption cavity with the lowest adsorption level in each capture module, so that the flue gas adsorbed by the solid amine can be discharged through the exhaust pipe, and the carbon dioxide gas generated by the desorption of the solid amine can be discharged through the carbon dioxide emission pipe; the main control module controls the valves of each exhaust pipe and the valves of each carbon dioxide emission pipe.

10. A modular solid amine continuous carbon capture device according to claim 9, characterized in that: The smoke module also includes an exhaust pipe, a pressurizing device and a vacuum device; the pressurizing device and the vacuum device are connected to the main control module by signal; The pressurizing device is connected to each of the air inlet pipes and is used to pressurize the input flue gas; The exhaust cylinder is connected to each of the exhaust pipes to provide power for exhausting the adsorbed flue gas and collect the adsorbed flue gas; the vacuum device is connected to each of the carbon dioxide emission pipes to extract the carbon dioxide gas generated by the desorption of the solid amine.

11. A modular solid amine continuous carbon capture device according to claim 9, characterized in that: Also included is a display module, a carbon dioxide monitor, a temperature sensor, and a pressure sensor communicatively connected to the main control module; The pressure sensor and the temperature sensor are provided in each of the capture modules, and the carbon dioxide monitor is provided in each of the exhaust pipes; the display module is used to display the magnitude of the flue gas to be adsorbed, the ambient temperature and solid amine temperature in the capture module, and the air pressure in the exhaust pipe.

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