Carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module

Abstract

The utility model relates to the technical field of carbon dioxide adsorption. A carbon dioxide capture and recovery system with assembled carbon dioxide adsorption modules comprises at least one assembled carbon dioxide adsorption module, each carbon dioxide adsorption module comprises an exchange cavity, the exchange cavity is provided with an airtight shell, and the shell is provided with an air inlet and an air outlet; the exchange cavity is filled with carbon dioxide ion exchange resin; a heat exchange pipeline is further arranged and connected with a high-temperature fluid heat source. The gas inlet cover body, the carbon dioxide adsorption module and the gas outlet cover body form a gas-tight gas cavity, a gas extraction opening of the compressor is communicated into the gas cavity through a gas path pipeline; and an exhaust port of the compressor is communicated with an air storage tank through an air channel pipeline. The characteristic that the adsorption rate of the carbon dioxide ion exchange resin at low temperature is higher than that at high temperature is utilized, carbon dioxide is adsorbed and separated from air by cooling the exchange cavity, carbon dioxide is released and recycled when the temperature is increased, and the social goals of emission reduction and efficiency improvement are achieved.

Description

Technical Field

[0001] The utility model relates to the field of gas adsorption, in particular to a carbon dioxide adsorption technology. Background Art

[0002] Carbon neutrality and carbon peak are important measures to address global climate change, and are of great significance for protecting the ecological environment and promoting green development.

[0003] In industries such as petroleum, coking, metal smelting, electric power and heat, there is a large amount of industrial waste heat in the form of waste water, waste gas, etc. This waste heat cannot be utilized, thus wasting energy.

[0004] A carbon dioxide ion exchange resin having a carbon dioxide adsorption rate at low temperature greater than that at high temperature can realize carbon adsorption and carbon recovery from air.

[0005] However, a certain scale of carbon dioxide ion exchange resin is needed to adsorb and recover carbon dioxide with a certain cost-effectiveness. Therefore, the adsorption device often needs to be very large in volume, which increases the difficulty of building the adsorption device to a certain extent. Therefore, how to reduce the difficulty of building large-volume adsorption devices has become a technical problem that needs to be solved urgently.

[0006] The more important problem is that different industrial environments require different scales of carbon adsorption and recovery. In order to match the needs, targeted industrial design is needed, making it difficult to carry out standardized industrial production, which in turn results in high production costs and long production cycles, making it difficult to popularize industrialization, and creating obstacles to achieving the peak of total carbon emissions within the set time. Utility Model Content

[0007] The purpose of the utility model is to provide a carbon dioxide capture and recovery system with an assembled carbon dioxide adsorption module to solve at least one of the above technical problems.

[0008] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0009] A carbon dioxide capture and recovery system with an assembled carbon dioxide adsorption module includes a carbon dioxide ion exchange resin for adsorbing carbon dioxide and a carbon dioxide adsorption module;

[0010] The carbon dioxide adsorption module includes an exchange chamber, the exchange chamber has an airtight shell, and the shell is provided with an air inlet and an air outlet;

[0011] The exchange chamber is filled with carbon dioxide ion exchange resin;

[0012] The air inlet has a connecting mechanism, and the air outlet has another connecting mechanism, and one connecting mechanism and the other connecting mechanism adopt a connecting matching structure;

[0013] A heat exchange pipe is also provided in the exchange chamber, and the heat exchange pipe includes a pipe inlet and a pipe outlet;

[0014] Also includes a high temperature fluid heat source;

[0015] The pipeline inlet is connected to the outlet of an electric-controlled fluid valve, the inlet of the electric-controlled fluid valve is connected to the outlet of a high-temperature fluid heat source, and the pipeline outlet is connected to the inlet of the high-temperature fluid heat source;

[0016] Also included is a carbon dioxide adsorption device, which includes at least two carbon dioxide adsorption modules, wherein the connection mechanism of the air outlet of one carbon dioxide adsorption module matches the connection mechanism of the air inlet of another carbon dioxide adsorption module, so as to form an assembled carbon dioxide adsorption module;

[0017] In two adjacent carbon dioxide adsorption modules, the pipe outlet pipe of the heat exchange pipe of one carbon dioxide adsorption module is connected to the pipe inlet pipe of the heat exchange pipe of the other carbon dioxide adsorption module;

[0018] The air inlet of the carbon dioxide adsorption module at the front end of the assembled carbon dioxide adsorption module and the air outlet of the carbon dioxide adsorption module at the rear end are both provided with a cover body covering the openings;

[0019] The cover body is provided with a channel allowing air circulation, and the channel is connected with an electric control valve;

[0020] The cover body and the assembled carbon dioxide adsorption module are connected in sequence to form an airtight air cavity;

[0021] It also includes a compressor, the air suction port of the compressor is connected to the air cavity through an air pipeline;

[0022] The exhaust port of the compressor is connected to an air storage tank through an air pipeline.

[0023] The utility model forms a large-scale device capable of realizing carbon dioxide adsorption and recovery storage by assembling a plurality of carbon dioxide adsorption modules.

[0024] In this design, the carbon dioxide adsorption module has an exchange chamber, which has an air inlet and an air outlet for air circulation. A heat exchange pipe is arranged in the exchange chamber. After the high-temperature fluid heat source is introduced, the temperature in the exchange chamber can be adjusted to increase. The characteristic of carbon dioxide ion exchange resin is that the adsorption rate under low-temperature pressurization conditions is greater than the adsorption rate under high-temperature conditions. Therefore, when the high-temperature fluid heat source is turned off in the exchange chamber, the carbon dioxide ion exchange resin begins to adsorb carbon dioxide in the air at room temperature. When the carbon dioxide ion exchange resin is saturated with carbon dioxide, the exchange chamber is connected to the high-temperature fluid heat source to increase the temperature. At this time, the adsorption rate of the carbon dioxide ion exchange resin at high temperature decreases, so the carbon dioxide ion exchange resin will reversely release the carbon dioxide gas adsorbed at low temperature.

[0025] In the present design, two adjacent carbon dioxide adsorption modules are connected in series with each other, and the connection structure provided at the air inlet of one carbon dioxide adsorption module can be connected to the connection structure provided at the air outlet of another carbon dioxide adsorption module, so that all adjacent carbon dioxide adsorption modules are connected in pairs to form a volume-superimposed carbon dioxide adsorption device, which still has an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the air inlet cover body and the air outlet cover body to form a new airtight air cavity.

[0026] In the present design, a fluid pipeline is also provided for connecting the pipeline outlets of the heat exchange pipelines of two adjacent carbon dioxide adsorption modules to the pipeline inlet of the heat exchange pipeline in another carbon dioxide adsorption module, so that the heat exchange pipelines in multiple carbon dioxide adsorption modules are also connected to each other. The high-temperature fluid heat source enters from the heat exchange pipeline in one carbon dioxide adsorption module, and can enter the heat exchange pipeline in the next carbon dioxide adsorption module through the fluid pipeline, and finally flows through the heat exchange pipelines in multiple carbon dioxide adsorption modules and returns to the inlet of the high-temperature fluid heat source. Such a design simplifies the pipeline complexity of the high-temperature fluid heat source connecting to the heat exchange pipelines of multiple carbon dioxide adsorption modules, and saves construction costs.

[0027] Through the above design, multiple carbon dioxide adsorption modules are connected to each other in terms of gas path and fluid heat source, thus forming a technical solution that can realize the assembly of standardized carbon dioxide adsorption modules to form a large adsorption and recovery device for adsorbing and recovering carbon dioxide.

[0028] Its beneficial effect also lies in the fact that industries such as petroleum, coking, metal smelting, electric power and heat power have a large amount of waste heat waste water or waste heat waste gas, which can be used as the high-temperature fluid heat source of this system. The reuse of waste heat can achieve energy saving and efficiency improvement.

[0029] High-temperature fluid heat sources can also utilize abundant clean energy such as solar energy, wind energy, tidal energy or geothermal energy, and capture and recover carbon dioxide from the air in places where these energy sources are abundant. Of course, if the conditions do not meet the requirements of clean energy, boiler hot water or hot air can also be used.

[0030] In this design, a compressor is also provided. The exhaust port of the compressor is connected to the air cavity. The carbon dioxide gas is extracted into the gas storage tank through the compressor, thereby realizing the process of adsorbing carbon dioxide from the air, and then releasing the carbon dioxide gas in a closed air cavity environment and extracting it into the gas storage tank, thereby achieving the goal of carbon neutrality and having beneficial social benefits.

[0031] With further optimization, the connection mechanism is a flange connection mechanism.

[0032] The flange connection mechanism is provided with a sealing ring on the connection end face. After being fixed by bolts, the gas outlet of one exchange chamber is sealed and connected to the gas inlet of another exchange chamber to form an airtight gas path. When the carbon dioxide ion exchange resin releases carbon dioxide, the airtight gas path can prevent the carbon dioxide gas from escaping.

[0033] Furthermore, it also includes a fan; the air outlet of the fan is connected to the inlet of the electric control valve of the air inlet cover body; the electric control valve of the air outlet cover body is a normally closed electric control valve, and the normally closed electric control valve is provided with a control signal input interface; it also includes a pressure sensor, the pressure sensor adopts a preset pressure value, and outputs an overpressure signal after detecting that the pressure exceeds the preset pressure value; the pressure sensitive element of the pressure sensor is arranged in the shell of the air outlet cover body, and the overpressure output signal of the pressure sensor is connected to the control signal input interface of the normally closed electric control valve.

[0034] During the carbon dioxide adsorption stage, the electric control valve of the air outlet cover is normally closed, and the fan ventilates the air cavity to increase the air pressure in the air cavity. Low temperature and pressure increase can improve the efficiency of carbon dioxide ion exchange resin in adsorbing carbon dioxide gas. When the air pressure rises to the set value of the pressure sensor, the pressure sensor outputs a control signal to control the normally closed electric control valve to open the valve to release pressure, while maintaining the appropriate air pressure in the air cavity, exhausting the old air and introducing new air.

[0035] Furthermore, the high-temperature fluid heat source adopts one of hot water or hot air, and the temperature of the high-temperature fluid heat source is 70-110°C.

[0036] In this design, after the heat exchange tube is connected to the high-temperature fluid heat source through the electrically controlled fluid valve, the temperature inside the exchange chamber of the carbon dioxide adsorption module will increase, the adsorption rate of carbon dioxide by the carbon dioxide ion exchange resin will decrease at high temperatures, and the carbon dioxide ion exchange resin will release the carbon dioxide gas adsorbed at low temperatures. The released carbon dioxide can be extracted and stored by the compressor.

[0037] Furthermore, it also includes a low-temperature fluid cooling source; the electric-controlled fluid valve adopts an electric-controlled switching valve, and the electric-controlled switching valve has two inlets and one outlet; one inlet is connected to the inlet of the high-temperature fluid heat source; the other inlet is connected to the inlet of the low-temperature fluid cooling source; the outlet is connected to the pipeline inlet;

[0038] The low-temperature fluid cooling source adopts one of cold water or cold air, and the temperature of the low-temperature fluid cooling source is less than 30°C.

[0039] In this design, the heat exchange pipeline can be connected to a low-temperature fluid cold source or switched to a high-temperature fluid heat source through an electrically controlled switching valve to control the temperature in the exchange chamber of the carbon dioxide adsorption module to decrease or increase.

[0040] The introduction of a low-temperature fluid cooling source can reduce the temperature environment in the exchange chamber to below room temperature, which can further enhance the adsorption capacity of the carbon dioxide ion exchange resin during the adsorption stage and further improve the capture and recovery efficiency of carbon dioxide.

[0041] Furthermore, the carbon dioxide ion exchange resin is a cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin; the cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin is one of a micro-particle type and a powder type.

[0042] Cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin is a new type of carbon dioxide ion exchange resin with the ability to adsorb carbon dioxide gas in recent years. One cubic cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin can adsorb 29kg of carbon dioxide. The cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin used in the utility model is in micro-granular or powder form, has a large surface area, and is conducive to the adsorption of carbon dioxide gas.

[0043] Furthermore, it also includes an electric sequential switching valve and at least two gas storage tank gas circuits;

[0044] The electric sequential switching valve adopts a switching valve with one inlet and multiple outlets, and the one inlet and the multiple outlets are switched and connected sequentially in the switching valve;

[0045] The electric sequential switching valve also has a switching input interface for controlling the sequential switching of the trigger passage;

[0046] The gas circuit of the gas storage tank includes a one-way valve and a gas storage tank, and the gas outlet of the one-way valve is connected to the gas inlet of the gas storage tank;

[0047] The exhaust port of the compressor is connected to the inlet of the electric sequential switching valve through an air pipeline;

[0048] The multi-way outlets of the electric sequential switching valve are connected to the air inlet of the one-way valve in sequence through the air pipeline;

[0049] A pressure sensor is also provided in the gas pipeline connecting the electric sequential switching valve to the one-way valve, which is called a gas storage pressure sensor. The gas storage pressure sensor adopts a pressure sensor with a preset pressure value, which outputs an overpressure signal when the gas pipeline pressure exceeds the preset pressure value;

[0050] The overpressure signal output interface signal of the gas storage pressure sensor is connected to the switching input interface of the electric sequential switching valve.

[0051] The utility model utilizes the mechanism of low-temperature adsorption and high-temperature release of carbon dioxide ion exchange resin to realize the adsorption and recovery of carbon dioxide gas, and the adsorption and release are cyclically repeated, so manual monitoring is time-consuming, labor-intensive and inefficient.

[0052] This design introduces an electric sequential switching valve, which can automatically switch to the next gas tank to continue storing gas after one gas tank is full.

[0053] A one-way valve is provided in the gas circuit of the gas storage tank, which can prevent the carbon dioxide gas in the gas storage tank from flowing back. Therefore, under the action of the compressor, the pressure in the gas storage tank will gradually rise.

[0054] The function of the gas storage pressure sensor is to detect the air pressure in the gas tank. When the air pressure reaches the set value, the gas storage pressure sensor sends an overpressure signal to the switching input interface of the electric sequential switching valve. After receiving the overpressure signal, the switching input interface switches the inlet of the electric sequential switching valve to connect to the outlet of the next sequence, and then stores the carbon dioxide gas extracted by the compressor in another empty gas tank, while the outlet that originally reached overpressure is connected to the atmosphere, and the high pressure in the gas pipeline between the one-way valve and the electric sequential switching valve is released. The gas storage pressure sensor that originally sent the overpressure signal stops outputting the overpressure signal because the pressure disappears.

[0055] This design uses the cooperation of electric sequential switching valves and gas storage pressure sensors to achieve unattended operation for a long time, reduce labor costs and improve production efficiency.

[0056] The beneficial effect of the utility model is that, by utilizing the assembled carbon dioxide adsorption device, a large-scale carbon dioxide adsorption device can be quickly built, thus saving the construction period, reducing the construction cost, and improving the production efficiency.

[0057] Its beneficial effect also lies in that the heat source can utilize waste heat wastewater or waste heat waste gas in industries such as petroleum, coking, metal smelting, electric power and thermal power, reduce energy waste, and achieve the social goal of reducing emissions and increasing efficiency.

[0058] Its beneficial effect also lies in that the electric sequential switching valve and the gas storage pressure sensor work together to solve the technical problem of automatically switching the gas tank, and can realize long-term unattended continuous automatic operation, saving labor costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0060] Figure 1 It is a schematic diagram of a capture and recovery system assembled using carbon dioxide adsorption modules;

[0061] Figure 2 is a schematic diagram of the cover;

[0062] Figure 3 It is a schematic diagram of multi-way switching gas storage;

[0063] Figure 4 is a schematic diagram of the carbon dioxide adsorption module.

[0064] Explanation of symbols:

[0065] 1. Carbon dioxide adsorption module; 2. Cover; 3. Pipeline outlet; 5. Pipeline inlet; 7. Electric control valve; 8. Compressor; 9. Gas storage pressure sensor; 10. One-way valve; 11. Gas storage tank; 12. Electric sequential switching valve; 13. Connecting mechanism; 14. Channel. DETAILED DESCRIPTION

[0066] In order to make the above-mentioned purposes, features and advantages of the present invention more understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0067] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0068] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0069] Secondly, the "one embodiment" or "embodiment" referred to herein refers to a specific feature, structure or characteristic that can be included in at least one implementation of the utility model. The "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0070] Reference Figure 1 , Figure 2 , Figure 3 As shown, a carbon dioxide capture and recovery system with an assembled carbon dioxide adsorption module includes a carbon dioxide ion exchange resin for adsorbing carbon dioxide and a carbon dioxide adsorption module 1;

[0071] The carbon dioxide adsorption module 1 includes an exchange chamber, the exchange chamber has an airtight shell, and the shell is provided with an air inlet and an air outlet;

[0072] The exchange chamber is filled with carbon dioxide ion exchange resin;

[0073] The air inlet has a connecting mechanism 13, and the air outlet has another connecting mechanism 13, and one connecting mechanism 13 and another connecting mechanism 13 are connected and matched with each other;

[0074] A heat exchange pipe is also provided in the exchange chamber, and the heat exchange pipe includes a pipe inlet 5 and a pipe outlet 3;

[0075] Also includes a high temperature fluid heat source;

[0076] The pipeline inlet 5 is connected to the outlet of an electric-controlled fluid valve, the inlet of the electric-controlled fluid valve is connected to the outlet of the high-temperature fluid heat source, and the pipeline outlet 3 is connected to the inlet of the high-temperature fluid heat source;

[0077] Also included is a carbon dioxide adsorption device, which includes at least two carbon dioxide adsorption modules 1, wherein the connecting mechanism 13 of the air outlet of two adjacent carbon dioxide adsorption modules 1 matches the connecting mechanism 13 of the air inlet of another carbon dioxide adsorption module 1, forming an assembled carbon dioxide adsorption module;

[0078] In two adjacent carbon dioxide adsorption modules 1, the pipe outlet 3 of the heat exchange pipe of one carbon dioxide adsorption module 1 is connected to the pipe inlet 5 of the heat exchange pipe of the other carbon dioxide adsorption module 1;

[0079] The air inlet of the carbon dioxide adsorption module 1 at the front end of the assembled carbon dioxide adsorption module and the air outlet of the carbon dioxide adsorption module 1 at the rear end are both provided with a cover body 2 covering the openings;

[0080] The cover body 2 is provided with a channel 14 allowing air circulation, and the channel 14 is connected to an electric control valve 7;

[0081] The cover 2 and the assembled carbon dioxide adsorption module are connected in sequence to form an airtight air cavity;

[0082] It also includes a compressor 8, the air suction port of the compressor 8 is connected to the air cavity through an air pipeline;

[0083] The exhaust port of the compressor 8 is connected to an air storage tank 11 through an air pipeline.

[0084] The utility model forms a large-scale device capable of realizing carbon dioxide adsorption and recovery storage by assembling a plurality of carbon dioxide adsorption modules 1 .

[0085] In this design, the carbon dioxide adsorption module 1 has an exchange chamber, the exchange chamber has an air inlet and an air outlet for air circulation, and a heat exchange pipe is arranged in the exchange chamber. After the high-temperature fluid heat source is introduced, the temperature in the exchange chamber can be adjusted to increase. The characteristic of carbon dioxide ion exchange resin is that the adsorption rate under low-temperature pressurization conditions is greater than the adsorption rate under high-temperature conditions. Therefore, when the exchange chamber closes the high-temperature fluid heat source, the carbon dioxide ion exchange resin begins to adsorb carbon dioxide in the air at room temperature. When the carbon dioxide ion exchange resin is saturated with carbon dioxide, the exchange chamber is connected to the high-temperature fluid heat source to increase the temperature. At this time, the adsorption rate of the carbon dioxide ion exchange resin at high temperature decreases, so the carbon dioxide ion exchange resin will reversely release the carbon dioxide gas adsorbed at low temperature.

[0086] In the present design, two adjacent carbon dioxide adsorption modules 1 are connected in series with each other, and the connection structure provided at the air inlet of one carbon dioxide adsorption module 1 can be connected to the connection structure provided at the air outlet of another carbon dioxide adsorption module 1, so that all adjacent carbon dioxide adsorption modules 1 are connected in pairs to form a volume-superimposed carbon dioxide adsorption device, and the carbon dioxide adsorption device still has an air inlet and an air outlet, and the air inlet and the air outlet are respectively connected to the air inlet cover body 2 and the air outlet cover body 2 to form a new airtight air cavity.

[0087] In the present design, a fluid pipeline is further provided for connecting the pipeline outlets 3 of the heat exchange pipelines of two adjacent carbon dioxide adsorption modules 1 to the pipeline inlet 5 of the heat exchange pipeline in another carbon dioxide adsorption module 1, so that the heat exchange pipelines in multiple carbon dioxide adsorption modules 1 are also connected to each other. The high-temperature fluid heat source enters from the heat exchange pipeline in one carbon dioxide adsorption module 1, and can enter the heat exchange pipeline in the next carbon dioxide adsorption module 1 through the fluid pipeline, and finally flows through the heat exchange pipelines in multiple carbon dioxide adsorption modules 1 and returns to the inlet of the high-temperature fluid heat source. Such a design simplifies the complexity of the pipelines for connecting the high-temperature fluid heat source to the heat exchange pipelines of multiple carbon dioxide adsorption modules 1, and saves construction costs.

[0088] Through the above design, multiple carbon dioxide adsorption modules 1 are connected to each other in terms of gas path and fluid heat source, thereby forming a technical solution that can realize the assembly of standardized carbon dioxide adsorption modules 1 to form a large adsorption and recovery device for adsorbing and recovering carbon dioxide.

[0089] Its beneficial effect also lies in the fact that industries such as petroleum, coking, metal smelting, electric power and heat power have a large amount of waste heat waste water or waste heat waste gas, which can be used as the high-temperature fluid heat source of this system. The reuse of waste heat can achieve energy saving and efficiency improvement.

[0090] High-temperature fluid heat sources can also utilize abundant clean energy such as solar energy, wind energy, tidal energy or geothermal energy, and capture and recover carbon dioxide from the air in places where these energy sources are abundant. Of course, if the conditions do not meet the requirements of clean energy, boiler hot water or hot air can also be used.

[0091] In the present design, a compressor 8 is also provided, and the air suction port of the compressor 8 is connected to the air cavity. The carbon dioxide gas is extracted into the gas storage tank 11 through the compressor 8, so as to realize the process of adsorbing carbon dioxide from the air, and then releasing the carbon dioxide gas in a closed air cavity environment and extracting it into the gas storage tank 11, thereby achieving the goal of carbon neutrality, which has beneficial social benefits.

[0092] The connection mechanism 13 is a flange connection mechanism 13 .

[0093] The flange connection mechanism 13 is provided with a sealing ring on the connection end face. After being fixed by bolts, the gas outlet of one exchange chamber is sealed and connected to the gas inlet of another exchange chamber to form an airtight gas path 14. When the carbon dioxide ion exchange resin releases carbon dioxide, the airtight gas path 14 can prevent the carbon dioxide gas from escaping.

[0094] It also includes a fan; the air outlet of the fan is connected to the inlet of the electric control valve 7 of the air inlet cover body 2; the electric control valve 7 of the air outlet cover body 2 is a normally closed electric control valve 7, and the normally closed electric control valve 7 is provided with a control signal input interface; it also includes a pressure sensor, the pressure sensor adopts a preset pressure value, and outputs an overpressure signal after detecting that the pressure exceeds the preset pressure value; the pressure sensitive element of the pressure sensor is arranged in the shell of the air outlet cover body 2, and the overpressure output signal of the pressure sensor is connected to the control signal input interface of the normally closed electric control valve 7.

[0095] In the carbon dioxide adsorption stage, the electric control valve 7 of the air outlet cover 2 is normally closed, and the fan ventilates the air cavity to increase the air pressure in the air cavity. Low temperature and pressure increase can improve the efficiency of carbon dioxide ion exchange resin in adsorbing carbon dioxide gas. When the air pressure rises to the set value of the pressure sensor, the pressure sensor outputs a control signal to control the normally closed electric control valve 7 to open the valve to release pressure, while maintaining the appropriate air pressure in the air cavity, the old air is discharged and the new air is introduced.

[0096] The high-temperature fluid heat source adopts one of hot water or hot air, and the temperature of the high-temperature fluid heat source is 70-110°C.

[0097] In this embodiment, after the heat exchange tube is connected to the high-temperature fluid heat source through the electrically controlled fluid valve, the temperature inside the exchange chamber of the carbon dioxide adsorption module 1 will increase, and the adsorption rate of carbon dioxide by the carbon dioxide ion exchange resin will decrease at high temperatures. The carbon dioxide ion exchange resin will release the carbon dioxide gas adsorbed at low temperatures, and the released carbon dioxide can be extracted and stored by the compressor 8.

[0098] Its beneficial effect is that there are a lot of waste heat waste water or waste heat waste gas in the petroleum, coking, metal smelting, electric power and heat industries, which can be used as the high-temperature fluid heat source of this system, and the waste heat reuse can achieve energy saving and efficiency improvement. The heat source can also use abundant clean energy such as solar energy, wind energy, tidal energy or geothermal energy, and air carbon dioxide can be captured and recycled nearby in places where these energy sources are abundant.

[0099] It also includes a low-temperature fluid cold source; the electric-controlled fluid valve adopts an electric-controlled switching valve, and the electric-controlled switching valve has two inlets and one outlet; one inlet is connected to the inlet of the high-temperature fluid heat source; the other inlet is connected to the inlet of the low-temperature fluid cold source; the outlet is connected to the pipeline inlet 5;

[0100] The low-temperature fluid cooling source adopts one of cold water or cold air, and the temperature of the low-temperature fluid cooling source is less than 30°C.

[0101] In this embodiment, the heat exchange pipe can be connected to a low-temperature fluid cold source or switched to a high-temperature fluid heat source through an electrically controlled switching valve to control the temperature in the exchange chamber of the carbon dioxide adsorption module 1 to decrease or increase.

[0102] The introduction of a low-temperature fluid cooling source can reduce the temperature environment in the exchange chamber to below room temperature, which can further enhance the adsorption capacity of the carbon dioxide ion exchange resin during the adsorption stage and further improve the capture and recovery efficiency of carbon dioxide.

[0103] The carbon dioxide ion exchange resin is a cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin; the cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin is one of a micro-particle type or a powder type.

[0104] Cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin is a new type of carbon dioxide ion exchange resin with the ability to adsorb carbon dioxide gas in recent years. One cubic cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin can adsorb 29 kg of carbon dioxide. The cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin used in this embodiment is in micro-granular or powder form and has a large surface area, which is conducive to the adsorption of carbon dioxide gas.

[0105] Reference Figure 2 As shown, it also includes an electric sequential switching valve 12 and at least two gas circuits of the gas storage tank 11;

[0106] The electric sequential switching valve 12 adopts a switching valve with one inlet and multiple outlets, and the one inlet and the multiple outlets are switched and connected sequentially in the switching valve;

[0107] The electric sequential switching valve 12 also has a switching input interface for controlling the sequential switching of the trigger passage;

[0108] The gas circuit of the gas storage tank 11 includes a one-way valve 10 and a gas storage tank 11, and the gas outlet of the one-way valve 10 is connected to the gas inlet of the gas storage tank 11;

[0109] The exhaust port of the compressor 8 is connected to the inlet of the electric sequential switching valve 12 through an air pipeline;

[0110] The multiple outlets of the electric sequential switching valve 12 are connected to the air inlet of the one-way valve 10 in sequence through the air pipeline;

[0111] A pressure sensor is also provided in the gas pipeline connecting the electric sequential switching valve 12 to the one-way valve 10, which is called the gas storage pressure sensor 9. The gas storage pressure sensor 9 has a preset pressure value and outputs an overpressure signal when the gas pipeline pressure exceeds the preset pressure value.

[0112] The overpressure signal output interface signal of the gas storage pressure sensor 9 is connected to the switching input interface of the electric sequential switching valve 12.

[0113] This embodiment utilizes the mechanism of low-temperature adsorption and high-temperature release of carbon dioxide ion exchange resin to achieve adsorption and recovery of carbon dioxide gas, and the adsorption and release are cyclical, so manual monitoring is time-consuming, labor-intensive and inefficient.

[0114] The present design introduces an electric sequential switching valve 12, which can automatically switch to the next gas storage tank 11 to continue storing gas after one gas storage tank 11 is full.

[0115] A one-way valve 10 is provided in the gas circuit of the gas storage tank 11 , and the one-way valve 10 can prevent the carbon dioxide gas in the gas storage tank 11 from flowing back. Therefore, under the action of the compressor 8 , the pressure in the gas storage tank 11 will gradually increase.

[0116] The function of the gas storage pressure sensor 9 is to detect the air pressure in the gas storage tank 11. When the air pressure reaches the set value, the gas storage pressure sensor 9 sends an overpressure signal to the switching input interface of the electric sequential switching valve 12. After receiving the overpressure signal, the switching input interface switches the inlet of the electric sequential switching valve 12 to connect to the outlet of the next sequence, and then stores the carbon dioxide gas extracted by the compressor 8 in another empty gas storage tank 11, while the outlet that originally reached overpressure is connected to the atmosphere, and the high pressure in the gas pipeline between the one-way valve 10 and the electric sequential switching valve 12 is released, and the gas storage pressure sensor 9 that originally sent the overpressure signal stops outputting the overpressure signal due to the disappearance of pressure.

[0117] This design can achieve unattended operation for a long time through the cooperation of the electric sequence switching valve 12 and the gas storage pressure sensor 9, thereby reducing labor costs and improving production efficiency.

[0118] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention.

[0119] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0120] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A carbon dioxide capture and recovery system having an assembled carbon dioxide adsorption module, comprising a carbon dioxide ion exchange resin for adsorbing carbon dioxide, characterized in that: Also included is a carbon dioxide adsorption module; The carbon dioxide adsorption module includes an exchange chamber, the exchange chamber has an airtight shell, and the shell is provided with an air inlet and an air outlet; The exchange chamber is filled with carbon dioxide ion exchange resin; The air inlet has a connecting mechanism, and the air outlet has another connecting mechanism, and one connecting mechanism and the other connecting mechanism adopt a connecting matching structure; A heat exchange pipe is also provided in the exchange chamber, and the heat exchange pipe includes a pipe inlet and a pipe outlet; Also includes a high temperature fluid heat source; The pipeline inlet is connected to the outlet of an electric-controlled fluid valve, the inlet of the electric-controlled fluid valve is connected to the outlet of a high-temperature fluid heat source, and the pipeline outlet is connected to the inlet of the high-temperature fluid heat source; Also included is a carbon dioxide adsorption device, which includes at least two carbon dioxide adsorption modules, wherein the connection mechanism of the air outlet of one carbon dioxide adsorption module matches the connection mechanism of the air inlet of another carbon dioxide adsorption module, so as to form an assembled carbon dioxide adsorption module; In two adjacent carbon dioxide adsorption modules, the pipe outlet pipe of the heat exchange pipe of one carbon dioxide adsorption module is connected to the pipe inlet pipe of the heat exchange pipe of the other carbon dioxide adsorption module; The air inlet of the carbon dioxide adsorption module at the front end of the assembled carbon dioxide adsorption module and the air outlet of the carbon dioxide adsorption module at the rear end are both provided with a cover body covering the openings; The cover body is provided with a channel allowing air circulation, and the channel is connected with an electric control valve; The cover body and the assembled carbon dioxide adsorption module are connected in sequence to form an airtight air cavity; It also includes a compressor, the air suction port of the compressor is connected to the air cavity through an air pipeline; The exhaust port of the compressor is connected to an air storage tank through an air pipeline.

2. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: The connection mechanism is a flange connection mechanism.

3. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: Also includes a fan; The air outlet of the fan is connected to the inlet of the electric control valve of the air inlet cover; The electric control valve of the air outlet cover is a normally closed electric control valve, which is provided with a control signal input interface; It also includes a pressure sensor, which has a preset pressure value and outputs an overpressure signal when the detected pressure exceeds the preset pressure value; The pressure sensitive element of the pressure sensor is arranged in the shell of the air outlet cover body, and the overpressure output signal of the pressure sensor is connected to the control signal input interface of the normally closed electric control valve.

4. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: The high-temperature fluid heat source adopts one of hot water or hot air, and the temperature of the high-temperature fluid heat source is 70-110°C.

5. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: Also includes a low temperature fluid cooling source; The electrically controlled fluid valve adopts an electrically controlled switching valve, which has two inlets and one outlet; An inlet is connected to an inlet of a high temperature fluid heat source; The other inlet is connected to the inlet of the low temperature fluid cooling source; The outlet is connected to the pipeline inlet; The low-temperature fluid cooling source adopts one of cold water or cold air, and the temperature of the low-temperature fluid cooling source is less than 30°C.

6. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: The carbon dioxide ion exchange resin is a cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin; The cross-linked polystyrene type primary amine type carbon dioxide ion exchange resin is one of the micro-particle type and powder type.

7. The carbon dioxide capture and recovery system with assembled carbon dioxide adsorption module according to claim 1, characterized in that: It also includes an electric sequential switching valve and at least two gas storage tank gas circuits; The electric sequential switching valve adopts a switching valve with one inlet and multiple outlets, and the one inlet and the multiple outlets are switched and connected sequentially in the switching valve; The electric sequential switching valve also has a switching input interface for controlling the sequential switching of the trigger passage; The gas circuit of the gas storage tank includes a one-way valve and a gas storage tank, and the gas outlet of the one-way valve is connected to the gas inlet of the gas storage tank; The exhaust port of the compressor is connected to the inlet of the electric sequential switching valve through an air pipeline; The multi-way outlets of the electric sequential switching valve are connected to the air inlet of the one-way valve in sequence through the air pipeline; A pressure sensor is also provided in the gas pipeline connecting the electric sequential switching valve to the one-way valve, which is called a gas storage pressure sensor. The gas storage pressure sensor adopts a pressure sensor with a preset pressure value, which outputs an overpressure signal when the gas pipeline pressure exceeds the preset pressure value; The overpressure signal output interface signal of the gas storage pressure sensor is connected to the switching input interface of the electric sequential switching valve.

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