Airborne carbon capture and adsorption device and low resistance carbon capture system

Abstract

The present invention provides an airborne carbon capture and adsorption device and a low-resistance carbon capture system that increase the porosity of the particulate adsorbent material, lower the resistance when the airflow passes through the adsorption layer, allow the adsorbent material to effectively contact the gas, ensure carbon dioxide adsorption efficiency, and improve the heat exchange efficiency of the heat exchange assembly, thereby saving energy consumption. [Solution] The airborne carbon capture and adsorption device comprises a support 1, a heat exchange assembly 2, an airflow dividing assembly 3, an adsorption group, and an external sealing assembly 5. The airflow dividing assemblies are provided on both sides of the support and are in communication with the heat exchange assemblies, and are used to perform heat exchange in the space within the support and to divide the airflow in the internal space of the support to form at least two small airflows. The adsorption groups are provided so as to be dispersed and filled in the space formed by the airflow dividing assembly and the support.

Description

[Technical Field]

[0001] The present application relates to the field of carbon dioxide capture and resource utilization, and more particularly to an airborne carbon capture and adsorption device and a low-resistance carbon capture system that can effectively reduce the operating resistance of a particulate adsorbent material during adsorption and can quickly heat and cool during desorption. [Background technology]

[0002] Currently, the mature CCUS technology applied in the flue gas field is mainly the liquid amine method, but whether it is the MEA method, DEA method, MDEA method, or the mixed amine method derived from them, they all require a lot of energy consumption in the solution regeneration stage, which keeps the energy consumption for running the liquid amine method high.

[0003] In the field of air carbon capture, two technical routes are commonly used: variable humidity adsorption and solid amine adsorption. Variable humidity adsorption achieves adsorption and desorption by changing the humidity of the material, and theoretically does not require heating. However, to achieve continuous operation, it is necessary to consume a lot of energy to dry the adsorbent material after desorption. In contrast, solid amine technology has attracted widespread attention due to its advantages such as mild operating conditions, high adsorption capacity, fast adsorption rate, and low energy consumption.

[0004] However, after deposition, the solid amine particulate adsorbent material has a large operating resistance when adsorbing carbon dioxide, which requires a larger power and energy consumption when adsorbing, thereby affecting the purification efficiency of the carbon capture system.

[0005] Based on this, there is an urgent need to research and develop an airborne carbon capture and adsorption device and a low-resistance carbon capture system that can effectively reduce the operating resistance of the particulate adsorption material during adsorption. Summary of the Invention [Problem to be solved by the invention]

[0006] The purpose of the present application is to provide an airborne carbon capture adsorption device and a low resistance carbon capture system to solve at least one technical problem in the prior art. [Means for solving the problem]

[0007] The technical solutions of this application are as follows:

[0008] A support; a heat exchange assembly disposed within the support; an airflow dividing assembly provided on each side of the support and communicating with the heat exchange assembly, for performing heat exchange in the space within the support and for dividing the airflow in the internal space of the support to form at least two small airflows; adsorption groups, which are dispersed and filled in the space formed by the airflow dividing assembly and the support, and are used for carbon capture by the small airflow or for desorption by the heat exchange assembly; and external sealing assemblies disposed on both sides of the support and positioned outside the airflow splitting assembly, the external sealing assemblies being used to limit the movement area of ​​the adsorption groups and pre-distribution or redistribution of gas entering the support.

[0009] The airflow splitting assembly includes: at least two communication members alternately disposed between the input end and the output end of the heat exchange assembly; an extension member that is provided outside the communication member and is located between any two adjacent communication members, and that increases the heat dissipation area of ​​the communication member and divides the airflow flowing through the extension member to form the small airflows; The adsorbent groups are disposed within the extension member and are used to perform carbon desorption and / or carbon capture.

[0010] The extension member is a first portion provided between the two communication members; a second portion provided symmetrically to the first portion, for increasing the heat exchange area of ​​the communicating member and for forming a space between the first portion and the second portion; The adsorbent groups are disposed within the space and are used to ensure that the porosity of the adsorbent groups is controlled during carbon capture.

[0011] the extension member further includes a connecting member; The connecting member is provided between the two communicating members and within the space, and is used to adjust the shape of the first part and / or the second part by adjusting the distance between the two communicating members according to the temperature, thereby achieving adjustment of the air flow rate within the space according to the temperature.

[0012] The first portion and / or the second portion are curved and are used to form an air passage in the space with a constantly changing cross section.

[0013] The first part and / or the second part are arc-shaped or corrugated plates.

[0014] The first part and / or the second part may be provided with one or more structures of perforations, notches, bends or barbs, which are used to increase the turbulence intensity of the airflow within the space.

[0015] At least one of the above-mentioned airborne carbon capture and adsorption devices is used to collect external gas to be treated, perform carbon capture on the gas to be treated, and obtain treated gas; an output unit provided at the output end of the airborne carbon capture and adsorption device, for discharging the treated gas; a negative pressure device connected to the airborne carbon capture and adsorption device, for providing negative pressure to the adsorption groups in the airborne carbon capture and adsorption device when desorption is performed, and for receiving the carbon-containing gas after desorption from the airborne carbon capture and adsorption device; a heat source connected to a heat exchange assembly in the airborne carbon capture and adsorption device, the heat source being used to provide heat for desorption of the adsorption groups; a cold source connected to the negative pressure device and used to reduce the temperature of the carbon-containing gas and separate it to obtain a separated gas.

[0016] The negative pressure device is a heat exchange unit having an input end connected to the output end of the airborne carbon capture and adsorption device, the heat exchange unit being used to reduce the temperature of the carbon-containing gas; and a negative pressure unit connected to the airborne carbon capture and adsorption device, the negative pressure unit being used to provide negative pressure to the airborne carbon capture and adsorption device and / or the heat exchange unit for desorption and / or gas separation.

[0017] the low resistance carbon capture system further comprising a compressed storage assembly connected to the negative pressure device; The compressed storage assembly comprises: a buffer unit connected to the output end of the negative pressure device and used to receive the separated gas; a compression unit connected to the buffer unit and used to compress the separated gas to obtain a compressed gas; a gas storage unit connected to the compression unit and used to store the compressed gas. [Effects of the Invention]

[0018] The present application has at least the following beneficial effects:

[0019] The airborne carbon capture and adsorption device described in the present application comprises a support, a heat exchange assembly, an airflow dividing assembly, adsorption groups, and an external sealing assembly, wherein the heat exchange assembly is disposed within the support and can heat or cool the space within the support to meet the adsorption or desorption temperature of the solid amine particles; the airflow dividing assemblies are disposed on both sides of the support and communicate with the heat exchange assembly, and are used to perform heat exchange within the space within the support and to divide the airflow in the internal space of the support to form at least two small airflows; the adsorption groups, such as solid amine particles, are dispersed and filled in the space formed by the airflow dividing assembly and the support and are used to capture carbon through the small airflows; and the external sealing assemblies are disposed on both sides of the support and located outside the airflow dividing assembly, and are used to limit the movement area of ​​the adsorption groups and the pre-distribution or re-distribution of gas entering the support. The airborne carbon capture and adsorption device described in this application increases the porosity of the particulate adsorption material, lowering the resistance when the airflow passes through the adsorption layer, allowing the adsorption material to effectively contact the gas, ensuring the adsorption efficiency of carbon dioxide, and also improving the heat exchange efficiency of the heat exchange assembly, thereby saving energy consumption. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a structural schematic diagram of an airborne carbon capture and adsorption device according to the present application. [Figure 2] FIG. 2 is an enlarged view of part E in FIG. [Figure 3] 2 is a structural diagram of an external sealing assembly and an airflow dividing assembly in the air carbon capture and adsorption device shown in FIG. 1. [Figure 4] FIG. 4 is a left side view of FIG. [Figure 5] 2 is a schematic diagram of a minute negative pressure region in an enlarged view of part E in FIG. 1. FIG. [Figure 6] 2 is a schematic diagram of an enlarged view of part E in FIG. 1 after a connecting member has been added. [Figure 7] FIG. 5 is a schematic diagram of the operation of FIG. 4. [Figure 8] FIG. 10 is a schematic diagram of an air flow in one embodiment of an extension member. [Figure 9] FIG. 10 is a schematic diagram of airflow in another embodiment of the extension member. [Figure 10] 1 is a structural block diagram of a low resistance carbon capture system according to the present application. [Figure 11] 1 is a flowchart of an air carbon capture and adsorption method according to the present application. DETAILED DESCRIPTION OF THE INVENTION

[0021] In conventional carbon capture systems, the solid amine must be deposited before it can be used. To enhance the adsorption effect of the solid amine, the solid amine particulate adsorbent material must be deposited. However, after the solid amine particulate adsorbent material is deposited, it experiences significant operating resistance when adsorbing carbon dioxide. This results in significant power consumption during adsorption, affecting the purification efficiency of the adsorption system. To address this problem, the present application provides a low-resistance carbon capture system that effectively reduces the operating resistance of the particulate adsorbent material during adsorption and achieves rapid heating and cooling during desorption. The main technical solutions are as follows: Embedding a framework-like structure in the material unit increases the porosity of the particulate adsorbent material, creating micro-vortices within the framework-like structure, ultimately reducing the resistance of the airflow passing through the adsorption layer and allowing the adsorbent material, such as the solid amine, to more effectively contact the gas, thereby ensuring carbon dioxide adsorption efficiency.

[0022] Specific Example I: The present application provides the following example.

[0023] As shown in FIGS. 1 and 2 , this airborne carbon capture and adsorption device includes a support 1, a heat exchange assembly 2, an airflow dividing assembly 3, adsorption groups 4, and an external sealing assembly 5. The heat exchange assembly 2 is disposed within the support 1 and can heat or cool the space within the support 1 to meet the adsorption or desorption temperature of the solid amine particles. The airflow dividing assemblies 3 are disposed on both sides of the support 1 and communicate with the heat exchange assembly 2. These assemblies are used to exchange heat within the space within the support 1 and to divide the airflow in the internal space of the support 1 to form at least two smaller airflows. The adsorption groups 4, e.g., solid amine particles, are dispersed and filled in the space formed by the airflow dividing assembly 3 and the support 1 and are used to capture carbon using the smaller airflows. The external sealing assemblies 5 are disposed on both sides of the support 1 and located outside the airflow dividing assembly 3 and are used to limit the movement area of ​​the adsorption groups 4 and prevent them from escaping from the support 1. 1 is a schematic diagram of the refrigerant or heat medium entering the heat exchange assembly 2, and the dashed arrows are a schematic diagram of the gas inflow and outflow directions. The arrow direction in FIG. 2 is the airflow direction.

[0024] In this embodiment, the airflow dividing assembly 3 has two functions: on the one hand, it connects an external heat or cold source to the heat exchange assembly 2 and heats or cools the internal space of the support 1; on the other hand, when the external gas to be collected enters the support 1, the airflow that enters the internal space of the support 1 is divided by the airflow dividing assembly 3 to form multiple tiny airflows. Furthermore, during the acceleration and deceleration of the airflow, tiny negative pressure areas are formed, which lift up and loosen the adsorbent material therein, such as solid amine, thereby effectively reducing the operating resistance of the microparticle adsorbent material during adsorption.

[0025] To achieve the above technical effects, as shown in FIG. 2 , the airflow dividing assembly 3 includes at least two communicating members 301 and an extension member 302, among which the communicating members 301, e.g., tubular connecting members, are alternately arranged between the input end and the output end of the heat exchange assembly 2, the extension members 302 are arranged outside the communicating members 301 and located between any two adjacent communicating members 301, and are used to increase the heat dissipation area of ​​the communicating members 301 and divide the airflow flowing through the extension members 302 to form the smaller airflows, and the adsorption groups 4 are arranged within the extension members 302 and are used to perform carbon desorption and / or carbon capture. In concrete implementation, the extension member 302 may be considered as a vortex sheet, and the extension member 302 includes a first part 3021 and a second part 3022, of which the first part 3021 is fixed between the two connecting members 301, and the second part 3022 is arranged symmetrically with the first part 3021, and is used to increase the heat exchange area of ​​the connecting member 301 and to form a space between the first part 3021 and the second part 3022, and the adsorption group 4 is arranged in the space, and when the adsorption group 4 captures carbon, The first part 3021 and the second part 3022 are preferably V-shaped members with a curvature on the surface. The first part 3021 and the second part 3022 can be fixed to the connecting member 301 by crimping, winding, welding, thermal melting, adhesion, etc. The interval between two adjacent extension members 302 is 1 to 50 mm, which is determined according to the specifications and thermal conductivity of the adsorbent material. The contact area between the combined structure of the connecting member 301 and the extension member 302 and the adsorbent material is 800 m 2 / m 3 ~3000m 2 / m 3 and can be adjusted according to the particle size of the adsorbent material, the particle diameter of the adsorbent material being 1 micrometer to 10 millimeters and the bulk density being 100 kg / m 3 ~1000kg / m 3 is.

[0026] 3-4, the external sealing assembly 5 is provided with through-holes 5A, which are used for intake and exhaust and can also pre-distribute or re-distribute gas entering the support. Specifically, the diameter of the through-holes 5A located on the outer side of the airflow dividing assembly 3 decreases as the through-holes 5A approach the center of the airflow dividing assembly 3. This structure allows the airflow entering the airflow dividing assembly 3 through the through-holes 5A. The airflow in the center of the airflow dividing assembly 3 is first accelerated as it passes through the smaller through-holes 5A. The airflow then undergoes a second acceleration as it approaches the center of the airflow dividing assembly 3. In this way, the combination of the through-holes 5A and the first and second sections 3021 and 3022 accelerates the airflow twice, thereby pre-distributing or re-distributing gas entering the support 1, improving gas flow dynamics, and reducing gas loss. The diameter of the through-holes 5A can be freely selected, but it is necessary to ensure ventilation and prevent solid amine particles from escaping. The arrow in FIG. 3 indicates the intake direction.

[0027] During use, the target gas, such as air or boiler flue gas, enters the support 1 through the external sealing assembly 5 at the input end. The airflow splitting assembly 3 splits the large airflow containing the target gas into multiple smaller airflows, which then enter the fine air passages defined by the connecting member 301 and the extension member 302. The first and second sections 3021 and 3022 resemble a V-shaped bend, continuously changing the cross-section of the airflow within the fine air passage. This causes the airflow to continuously accelerate and decelerate during its flow, forming a small negative pressure region, as shown in part a in Figure 5. The adsorption groups 4 located within this region are continuously rolled up and loosened. The connecting member 301 is arranged in a staggered pattern, further complicating the airflow within the fine air passages. The airflow continuously accelerates and decelerates within the fine air passages and collides with the connecting members 301, ensuring sufficient contact with the adsorption groups 4 and maintaining uniform gaps within the adsorption groups 4. Finally, the purified gas exits the external sealing assembly 5 at the output end. Because the pore size of the typical adsorption material in the adsorption groups 4 is larger than that of the external sealing assembly 5, the adsorption material remains within the support 1, and the captured gas is output. During desorption, the pressure within the support 1 is reduced to near-vacuum, allowing a heat source to be introduced into the heat exchange assembly 2. The presence of multiple connecting members 301 significantly improves the heat exchange rate. At the same time, the extension members 302 heat the surrounding adsorption groups 4. Because the gaps between the extension members 302 are very small, the large contact area allows the adsorption material between the extension members 302 to be rapidly heated to the desorption temperature, releasing the adsorbed carbon dioxide. Since desorption is carried out under near-vacuum conditions, the released gas rapidly expands to form microbubbles, which can re-break through the partial compaction regions that may exist during adsorption of the adsorbent material and loosen all the adsorbent material again, thereby achieving the goal of controlling the porosity for a long time.

[0028] 6, in this embodiment, the extension member 302 is columnar or has another shape and further includes a heat-sensitive connecting member 3023, which preferably shortens when heated to change the distance between the two communicating members 301, change the shapes of the first portion 3021 and the second portion 3022, and further change the shape of the space formed by the first portion 3021 and the second portion 3022. Specifically, the connecting member 3023 is disposed between the two communicating members 301, and can adjust the shape of the first portion 3021 and / or the second portion 3022 by adjusting the distance between the two communicating members 301 in accordance with the temperature within the space. As shown in FIG. 7 , when the connecting member 3023 is heated and shortened, it shortens the distance between the two communicating members 301, making the V-shaped tips of the first and second parts 3021 and 3022 sharper. The V-shaped tips of the first and second parts 3021 and 3022 form a Venturi effect, which increases the flow rate of the airflow flowing through the space formed by the first and second parts 3021 and 3022, making the acceleration of the airflow to be collected more intense during its flow process, creating more micro-negative pressure areas, and causing the adsorption groups 4 to continuously roll up and down, thereby reducing the airflow resistance during operation. Preferably, the heat-sensitive connecting members 3023 are arranged alternately, which prevents adjacent heat-sensitive connecting members 3023 from simultaneously applying opposite forces to the same position on the same communicating member 301. The heat-sensitive connecting members 3023 may also be made of a heat-sensitive metal.

[0029] In this embodiment, the first part 3021 and the second part 3022 are manufactured as arc-shaped plates to form a V-shape, and may also be corrugated plates themselves.

[0030] When made of a corrugated plate, the continuous protrusions on the corrugated plate form a continuous rising and falling structure for the airflow traveling along the surfaces of the first part 3021 and the second part 3022, so that the airflow continuously accelerates and decelerates as it flows over the surfaces of the first part 3021 and the second part 3022, and the adsorption groups 4, for example, solid amine particles, encounter different airflow conditions each time they fall. That is, the continuous acceleration and deceleration of the solid amine particles makes the distribution of the solid amine particles more uneven, thereby reducing the airflow resistance during operation.

[0031] Furthermore, in order to further increase the degree of change in the airflow inside the support 1, the first part 3021 and / or the second part 3022 may be provided with perforations, notches, or bends or thorns. As shown in Fig. 8, when a perforation or notch structure is used, the presence of the perforations or notches causes the airflow to form vortices at the positions of the notches as it flows over the surfaces of the first part 3021 and the second part 3022, as shown in part b in Fig. 8. When there are multiple perforations or notches, multiple vortices are formed within the space, thereby further increasing the turbulence intensity of the airflow and improving the carbon capture effect. If the first portion 3021 and / or the second portion 3022 are provided with bends or thorns, the bends can be similar to protrusions. The bends or thorns protrude from the surfaces of the first portion 3021 and / or the second portion 3022, hindering the steady flow of airflow as it passes over the surfaces of the first portion 3021 and / or the second portion 3022, as shown in part C of Figure 9. The airflow bends upward along the surface, generating a vertical wind speed component, resulting in an inclined updraft. The airflow continues to rise until it reaches the top of the bends or thorns, and then moves forward. This causes the airflow to have different speeds at different locations. Furthermore, if the bends or thorns are randomly arranged, the airflow speed will also vary randomly in space, further increasing the turbulence intensity of the airflow and improving the carbon capture effect. The arrows in Figure 9 indicate the airflow direction.

[0032] Specific Example II: The present application further provides the following example.

[0033] As shown in FIG. 10 , the airborne carbon capture and adsorption apparatus according to at least one specific embodiment I includes an output unit 10, a negative pressure device 20, a heat source 30, a cold source 40, and a compression storage assembly 50 connected to the negative pressure device 20. The airborne carbon capture and adsorption apparatus is used to collect external gas to be treated, perform carbon capture on the gas to be treated, and obtain a treated gas. The output unit 10, for example, a fan, is provided at the output end of the airborne carbon capture and adsorption apparatus and is used to exhaust the treated gas. The negative pressure device 20, for example, a vacuum pump, is provided at the output end of the airborne carbon capture and adsorption apparatus and is used to exhaust the treated gas. The vacuum pump is connected to the airborne carbon capture and adsorption device and is used to provide negative pressure to the adsorption group 4 in the airborne carbon capture and adsorption device when desorption is performed, and to receive the carbon-containing gas after desorption by the airborne carbon capture and adsorption device. The heat source 30 is connected to the heat exchange assembly 2 in the airborne carbon capture and adsorption device and is used to provide heat for desorption of the adsorption group 4. The cold source 40 is connected to the negative pressure device 20 and is used to reduce the temperature of the carbon-containing gas and separate it, thereby obtaining the separated gas. This is a low resistance carbon capture system.

[0034] In this embodiment, the airborne carbon capture and adsorption device described in specific embodiment I is used. Compared with the prior art, this low-resistance carbon capture system can reduce the operating resistance of the adsorption group and improve the carbon dioxide adsorption efficiency. In addition to carbon capture, this low-resistance carbon capture system can also complete a desorption cycle and collect the collected carbon dioxide gas. In addition, the airborne carbon capture and adsorption device described in specific embodiment I can only capture carbon and cannot store carbon. In specific use, the negative pressure device 20 includes a heat exchanger unit 201 and a negative pressure unit 202. The input end of the heat exchanger unit 201 is connected to the output end of the airborne carbon capture and adsorption device and is used to reduce the temperature of the carbon-containing gas. The negative pressure unit 202 is used to reduce the temperature of the airborne carbon. The compression and storage assembly 50 is connected to the collection and adsorption device and is used to provide negative pressure to the airborne carbon collection and adsorption device and / or the heat exchange unit 201 to perform desorption and / or gas separation. The compression and storage assembly 50 includes a buffer unit 501, a compression unit 502 and a gas storage unit 503, wherein the buffer unit 501 is connected to the output end of the negative pressure device 20 and is used to receive the separated gas, the compression unit 502 is connected to the buffer unit 501 and is used to compress the separated gas to obtain compressed gas, and the gas storage unit 503 is connected to the compression unit 502 and is used to store the compressed gas. Of course, the system of this embodiment may further be provided with a gas component collection device, valves, etc. as needed.

[0035] An adsorption box may be disposed at section M in Figure 10, serving as a pressure-resistant box. A plurality of airborne carbon capture and adsorption devices according to specific embodiment I are installed within the adsorption box, and the airborne carbon capture and adsorption devices are spatially connected to the adsorption box. A vacuum pump is connected to the adsorption box. During desorption, the inlet and outlet valves of the adsorption box are turned off, and the vacuum pump is started to create a negative pressure in the adsorption box and the adsorption unit. Only one airborne carbon capture and adsorption device is shown in Figure 10.

[0036] During use, the target gas, such as air or boiler flue gas, enters the support 1 through the external sealing assembly 5 at the input end. The airflow splitting assembly 3 splits the large airflow containing the target gas into multiple smaller airflows, which then enter the fine air passages defined by the connecting member 301 and the extension member 302. The first and second sections 3021 and 3022 resemble a V-shaped bend, continuously changing the cross section of the airflow within the fine air passages. This causes the airflow to continuously accelerate and decelerate during its flow, creating minute negative pressure regions, which continuously curl up and loosen the adsorption groups 4 located within. The connecting member 301 is also staggered, further complicating the airflow within the fine air passages. The airflow continuously accelerates and decelerates within the fine air passages and collides with the connecting members 301, ensuring sufficient contact with the adsorption groups 4 and maintaining uniform gaps within the adsorption groups 4. Finally, the purified gas exits the external sealing assembly 5 at the output end. Because the pore size of the typical adsorption material in the adsorption groups 4 is larger than that of the external sealing assembly 5, the adsorption material remains within the support 1, and the captured gas is output. During desorption, the pressure within the support 1 is reduced to near-vacuum, allowing a heat source to be introduced into the heat exchange assembly 2. The presence of multiple connecting members 301 significantly improves the heat exchange rate. At the same time, the extension members 302 heat the surrounding adsorption groups 4. Because the gaps between the extension members 302 are very small, the large contact area allows the adsorption material between the extension members 302 to be rapidly heated to the desorption temperature, releasing the adsorbed carbon dioxide. Since desorption is carried out under near-vacuum conditions, the released gas rapidly expands to form microbubbles, which can re-break through the partial compaction regions that may exist during adsorption of the adsorbent material and loosen all the adsorbent material again, thereby achieving the goal of controlling the porosity for a long time.The desorbed gas discharged from the adsorption group 4 passes through the heat exchange unit 201, and the cooling provided by the cold source 40 separates the carbon dioxide and condensable gases in the desorbed gas. The carbon dioxide is then introduced into the compression-storage assembly 50. The carbon dioxide is first temporarily stored in the buffer unit 501, e.g., a buffer tank. The compression unit 502 is then activated under pressure control to compress the carbon dioxide, which is then stored in the gas storage unit 503, thereby completing the storage of carbon dioxide. After desorption is complete, the heat source introduced into the airflow dividing assembly 3 is switched to a cold source. The large contact area of ​​the extension member 302 quickly cools the adsorbent material to room temperature, restoring its adsorption performance. This completes one adsorption-desorption cycle.

[0037] The heat source 30 described in this embodiment can supply heat by a medium such as steam, hot water, hot oil, or high-temperature refrigerant. The cold source 40 can provide cooling by a medium such as cooling water, glycol, calcium chloride, cold oil, or low-temperature refrigerant.

[0038] Specific Example III: The present application further provides the following example.

[0039] As shown in FIG. 11 , the method for collecting and adsorbing carbon in air is based on the airborne carbon adsorption device described in specific Example I, and includes the steps of: dividing the airflow entering the internal space of the support body 1 using an airflow dividing assembly 3 to form at least a plurality of small airflows; dispersing and filling the adsorption space formed by the airflow dividing assembly 3 and the support body 1 with adsorption groups 4 for carbon collection; and allowing the small airflows to pass through the adsorption space to collect carbon, thereby reducing the operating resistance of the adsorption groups.

[0040] Specific use cases: To further illustrate the technical means and effects adopted in the present invention to achieve the specified inventive object, the following description will be given with reference to actual construction examples.

[0041] According to the requirements of the party, the airborne carbon capture and adsorption device in specific example I was used 3000m 3 A 1000W / h carbon capture system was designed, with 10 of the above airborne carbon capture and adsorption devices connected in parallel. Each airborne carbon capture and adsorption device had a frontal area of ​​1.0m x 0.8m and a thickness of 0.1m. The extension members 302 of the airflow dividing assembly 3 were designed as corrugated metal sheets, with spacing of approximately 20mm between the extension members 302 and filled with fine particle adsorption material with a particle size of approximately 1mm. Measurements showed that under the same operating conditions, the unstructured material resistance of the extension members 302 and connecting members 301 was approximately 150Pa. After the installation of the device was completed and the fan was started and operated normally, the pressure difference before and after the adsorption unit was measured to be 80 Pa to 90 Pa during the first operation. After three adsorption-desorption cycles, the structure composed of the extension member 302 and the connecting member 301 allowed the desorbed and released microbubbles to rearrange the adsorption material in the micro air passages, and the pressure difference before and after the adsorption unit finally stabilized at 65 Pa to 75 Pa, which means that the fan's energy consumption was reduced by more than 50%.

[0042] In the desorption phase, the airborne carbon capture and adsorption device of Example I uses a high-temperature heat pump to combine the heat source 30 and the cold source 40. When the system described in Example II enters the desorption phase, the heat pump compressor pumps high-temperature refrigerant into the pipe of the connecting member 3023 of the heat exchange unit 201. The high-temperature working material, approximately 90°C, rapidly heats the extension member 302 and the connecting member 301, heating the adsorption material packed around them. Measurements showed that it takes approximately 30 minutes to heat a material of the same thickness to 80°C using hot air, while the structure consisting of the extension member 302 and the connecting member 301 can heat the adsorption material to the desorption temperature in approximately 5 minutes. The entire desorption process, including heating and cooling, can be completed in approximately 30 minutes, saving 87% of the desorption time of 240 minutes required for conventional hot air desorption. After passing through the adsorption material, the high-temperature gas is throttled through an expansion valve to become a low-temperature gas, and a heat exchanger at the inlet of the vacuum pump recovers heat from the system and removes condensable gases, thereby improving the purity of the carbon dioxide. By utilizing the heat source and recovering energy, the energy consumption in the desorption process is reduced by nearly 50% compared to the energy consumption of traditional hot air desorption. After desorption is completed, the cooling stage begins. In Example II, the refrigerant flow direction is reversed, allowing a low-temperature refrigerant to be sent into the air-borne carbon capture and adsorption device to lower the temperature of the adsorption material.

[0043] Therefore, in this application, the airborne carbon capture and adsorption device in Specific Example I not only increases the porosity of the particulate adsorbent material, but also creates micro-vortices inside the airborne carbon capture and adsorption device, thereby reducing the resistance when the airflow passes through the adsorbent material and allowing the adsorbent material to more effectively contact the gas, thereby ensuring carbon dioxide removal efficiency. Furthermore, the low-resistance carbon capture system described in Specific Example II, which is equipped with a vacuum unit such as a vacuum pump or compressor, can produce the captured carbon dioxide gas as a liquid carbon dioxide product.

[0044] The above disclosure is merely a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations conceivable by those skilled in the art are intended to be included within the scope of protection of the present application. The numbers in the above application are for illustrative purposes only and do not represent the merits or demerits of the implementation scenarios. [Explanation of symbols]

[0045] 1 Support 2 Heat Exchange Assembly 3 Airflow Splitter Assembly 4 Adsorption group 5 External sealing assembly 10 output units 20 Negative pressure device 30 Heat source 40 cold source 201 Heat Exchange Unit 202 Negative pressure unit 301 Connecting member 302 Extended member 501 Buffer unit 502 Compression Unit 503 Gas Storage Unit 3021 Part 1 3022 Part 2 3023 Connecting members 5A through hole

Claims

1. A support; a heat exchange assembly disposed within the support; an airflow dividing assembly provided on each side of the support and communicating with the heat exchange assembly, for performing heat exchange in the space within the support and for dividing the airflow in the internal space of the support to form at least two small airflows; adsorption groups, which are dispersed and filled in the space formed by the airflow dividing assembly and the support, and which are used to capture carbon by the small airflow, reduce the operating resistance of the adsorption groups, or perform desorption by the heat provided by the heat exchange assembly; external sealing assemblies provided on both sides of the support and positioned outside the airflow splitting assembly, and used to limit the movement area of ​​the adsorption groups and pre-distribution or redistribution of gas entering the support; The airflow splitting assembly includes: at least two communicating members alternately provided between the input end and the output end of the heat exchange assembly, for continuously accelerating and decelerating the airflow in the fine air passages formed by the communicating members and the extension members together and for causing the airflow to collide with the communicating members, thereby not only allowing the airflow to fully contact the adsorption groups but also maintaining uniform gaps between the adsorption groups through the air flow; an extension member provided on the outer surface of the communication member and positioned between any two adjacent communication members, the extension member being used as a vortex sheet to increase the heat dissipation area of ​​the communication member and to divide the airflow flowing through the extension member to form the small airflows; the adsorption group is disposed within the extension member and is used for carbon desorption and / or carbon capture; The extension member is a first portion provided between the two communication members; a second part provided symmetrically to the first part, the second portion increases the heat exchange area of ​​the communicating member and forms a space inside the first portion and the communicating member, The adsorption group is disposed within the space and is used to ensure that the porosity of the adsorption group is controlled during carbon capture; The airborne carbon collection and adsorption device is characterized in that the first and second parts are provided as V-shaped members, and are used to continuously change the airflow flow cross-section within the fine air passage, continuously accelerate and decelerate the airflow while it is flowing, form a minute negative pressure region, and continuously roll up and loosen the adsorption group located within the fine air passage.

2. the extension member further includes a connecting member; 2. The airborne carbon capture and adsorption device according to claim 1, wherein the connecting member is provided between the two communicating members and within the space, and is used to adjust the shape of the first part and / or the second part by adjusting the distance between the two communicating members in accordance with temperature, thereby achieving adjustment of the airflow velocity within the space in accordance with temperature.

3. 3. The airborne carbon capture and adsorption device according to claim 1 or 2, wherein the first portion and / or the second portion are curved surfaces and are used to form an air passage in the space whose cross section keeps changing.

4. 3. The airborne carbon capture and adsorption device according to claim 1 or 2, wherein the first part and / or the second part is an arc-shaped plate or a corrugated plate.

5. 3. The airborne carbon capture and adsorption device according to claim 1 or 2, wherein the first part and / or the second part are provided with one or more structures selected from the group consisting of perforations, notches, bends, and barbs, which are used to increase the turbulence intensity of the airflow in the space.

6. The airborne carbon capture and adsorption device according to claim 1, which is used to collect an external gas to be treated, perform carbon capture on the gas to be treated, and obtain a treated gas; an output unit provided at the output end of the airborne carbon capture and adsorption device, for discharging the treated gas; a negative pressure device connected to the airborne carbon capture and adsorption device, for providing negative pressure to the adsorption groups in the airborne carbon capture and adsorption device when desorption is performed, and for receiving the carbon-containing gas after desorption from the airborne carbon capture and adsorption device; a heat source connected to a heat exchange assembly in the airborne carbon capture and adsorption device, the heat source being used to provide heat for desorption of the adsorption groups; A low resistance carbon capture system, characterized by comprising: a cold source connected to the negative pressure device and used to reduce the temperature of the carbon-containing gas and separate it, thereby obtaining a separated gas.

7. The negative pressure device is a heat exchange unit having an input end connected to the output end of the airborne carbon capture and adsorption device, the heat exchange unit being used to reduce the temperature of the carbon-containing gas; and a negative pressure unit connected to the airborne carbon capture and adsorption device, the negative pressure unit being used to provide negative pressure to the airborne carbon capture and adsorption device and / or the heat exchange unit for desorption and / or gas separation.

8. further comprising a compressed storage assembly connected to the negative pressure device; The compressed storage assembly comprises: a buffer unit connected to the output end of the negative pressure device and used to receive the separated gas; a compression unit connected to the buffer unit and used to compress the separated gas to obtain a compressed gas; 7. The low resistance carbon capture system of claim 6, further comprising: a gas storage unit connected to the compression unit and used to store the compressed gas.

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