Coupling device for hydrogen gas production and carbon dioxide utilization

Abstract

The present application provides a coupling device for hydrogen gas production and carbon dioxide utilization. The device comprises a spiral heat exchanger, a carbon dioxide collector, a steam generator, and an electrolytic cell, wherein the spiral heat exchanger inputs steam into the steam generator through a first pipe, the steam generator generates electric energy from the steam, the electric energy is transmitted to the electrolytic cell through a cable, and the steam is input into the electrolytic cell through a fourth pipe; the carbon dioxide collector is configured to collect carbon dioxide from flue gas produced by combustion and input the collected carbon dioxide into the spiral heat exchanger through a third pipe; the electrolytic cell is configured to produce hydrogen gas from the steam and the electric energy, and the produced hydrogen gas is introduced into the spiral heat exchanger through a second pipe; and the spiral heat exchanger is configured to promote a chemical reaction between the carbon dioxide and the hydrogen gas, and output a target compound.

Description

Coupling device for hydrogen production and carbon dioxide utilization

[0001] Cross-reference to related applications

[0002] The present application is based on and claims priority to Chinese Patent Application No. 202410695071.1, filed on May 31, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the field of chemical technology, in particular to a coupling device for hydrogen production and carbon dioxide utilization. BACKGROUND

[0004] The carbon dioxide produced by the combustion of fossil fuels in thermal power plants is a greenhouse gas, and carbon dioxide capture is needed to reduce the amount of carbon dioxide emitted into the atmosphere in order to achieve the goal of carbon neutrality. Post-combustion chemical absorption of carbon dioxide is a relatively mature and large-scale application technology at present, and high-temperature steam is usually extracted from the power plant to heat and regenerate the rich liquid in the regeneration tower, but even the medium-low temperature steam extracted from the power plant has a temperature and pressure higher than the temperature required by the hot side fluid at the bottom of the regeneration tower. For the current carbon dioxide capture system, the extracted steam is usually subjected to temperature and pressure reduction operation, which will result in the loss of part of the steam heat and poor comprehensive utilization of the steam. SUMMARY

[0005] The present application aims to at least partially solve one of the technical problems in the related art. To this end, the present application proposes a coupling device for hydrogen production and carbon dioxide utilization to achieve comprehensive utilization of resources and improve energy utilization.

[0006] To achieve the above-mentioned purpose, the embodiments of the present application propose a coupling device for hydrogen production and carbon dioxide utilization, comprising:

[0007] a spiral heat exchanger, a carbon dioxide collector, a steam turbine, and an electrolytic cell; wherein the spiral heat exchanger is connected to the steam turbine through a first pipeline, the spiral heat exchanger is connected to the electrolytic cell through a second pipeline, the spiral heat exchanger is connected to the carbon dioxide collector through a third pipeline, and the steam turbine is connected to the electrolytic cell through a fourth pipeline and an electric cable;

[0008] The spiral heat exchanger inputs steam into the steam turbine through the first pipeline, the steam turbine generates electric energy based on the steam, and the electric energy is transmitted to the electrolytic cell through the electric cable, and the steam is input into the electrolytic cell through the fourth pipeline;

[0009] The carbon dioxide collector collects carbon dioxide from smoke generated by combustion, and inputs the collected carbon dioxide into the spiral heat exchanger through the third pipeline;

[0010] The electrolytic cell produces hydrogen based on the steam and the electric energy, and inputs the produced hydrogen into the spiral heat exchanger through the second pipeline;

[0011] The spiral heat exchanger is used for triggering chemical reaction of carbon dioxide and hydrogen, and outputs target compounds.

[0012] The hydrogen production and carbon dioxide utilization coupling device provided by the application fully utilizes the steam before producing hydrogen by circulating the steam in the spiral heat exchanger, the steam generator and the electrolytic cell. The carbon dioxide collector is used for extracting carbon dioxide from smoke and inputting the carbon dioxide into the spiral heat exchanger. The carbon dioxide and the hydrogen input by the electrolytic cell react in the spiral heat exchanger to generate new target compounds, so that the carbon dioxide is fully utilized, carbon emission is reduced, and the utilization rate of overall energy is improved.

[0013] Additional aspects and advantages of the application will be described in part below, will become apparent from the following description, or will be learned by practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0015] FIG. 1 is a structural schematic diagram of a hydrogen production and carbon dioxide utilization coupling device provided by an embodiment of the application;

[0016] FIG. 2 is a structural schematic diagram of another hydrogen production and carbon dioxide utilization coupling device provided by an embodiment of the application;

[0017] FIG. 3 is a structural schematic diagram of a spiral heat exchanger provided by an embodiment of the application. DETAILED DESCRIPTION

[0018] The embodiments of the application are described in detail below, examples of which are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0019] The hydrogen production and carbon dioxide utilization coupling device of the embodiments of the application is described below with reference to the accompanying drawings.

[0020] FIG. 1 is a structural schematic diagram of a coupling device for hydrogen production and carbon dioxide utilization according to an embodiment of the present application. As shown in FIG. 1, the device includes:

[0021] a spiral heat exchanger 100, a carbon dioxide collector 200, a steam generator 300, and an electrolytic cell 400.

[0022] The spiral heat exchanger 100 is connected to the steam generator 300 through a first pipeline, connected to the electrolytic cell 400 through a second pipeline, connected to the carbon dioxide collector 200 through a third pipeline, and connected to the electrolytic cell 400 through a fourth pipeline and a cable.

[0023] The spiral heat exchanger 100 inputs steam into the steam generator 300 through the first pipeline, the steam generator 300 generates electricity based on the steam, and transmits the electricity to the electrolytic cell 400 through the cable, and inputs steam into the electrolytic cell 400 through the fourth pipeline.

[0024] The carbon dioxide collector 200 collects carbon dioxide from smoke generated by combustion, and inputs the collected carbon dioxide into the spiral heat exchanger 100 through the third pipeline.

[0025] The electrolytic cell 400 produces hydrogen based on steam and electricity, and inputs the produced hydrogen into the spiral heat exchanger 100 through the second pipeline.

[0026] The spiral heat exchanger 100 is used to catalyze a chemical reaction of carbon dioxide and hydrogen, and outputs a target compound.

[0027] In some embodiments, the carbon dioxide collector 200 is mainly used for capturing carbon dioxide in smoke, that is, capturing carbon dioxide in flue gas emitted by combustion. Common carbon dioxide separation technologies include chemical absorption and physical absorption. Chemical absorption uses acid-base absorption, and physical absorption separates carbon dioxide by temperature swing or pressure swing adsorption. In some embodiments, the carbon dioxide collector 200 can also collect carbon dioxide by physical adsorption, membrane separation, cryogenic separation, and other capture technologies to reduce carbon dioxide emissions.

[0028] For example, when the space hindered amine AMP is used as an example, the AMP solution will undergo a reversible chemical reaction with carbon dioxide CO2 when the AMP is prepared into a solution. The reaction formula of the AMP absorbing carbon dioxide is as follows: Carbon dioxide is captured and absorbed based on the AMP.

[0029] In some embodiments, the steam generator 300 can be a steam turbine driven by high-temperature and high-pressure steam to drive a generator to generate electricity, and the generated electricity can be used to provide power for the subsequent electrolytic cell 400 to produce hydrogen. It can be understood that the electrolytic cell 400 is used to electrolyze water to produce hydrogen.

[0030] In some embodiments, the spiral heat exchanger 100 can be based on high-temperature and high-pressure steam to raise the temperature and pressure, so as to achieve the conditions for the chemical reaction of carbon dioxide and hydrogen. The spiral heat exchanger 100 has at least an area for the chemical reaction of carbon dioxide and hydrogen. In some embodiments, in order to ensure that carbon dioxide and hydrogen can continuously react, the spiral heat exchanger 100 can be made of thermal insulation material, so that the internal temperature of the spiral heat exchanger can meet the conditions for the reaction of carbon dioxide and hydrogen for a long time, and the target compound can be output.

[0031] In some embodiments, carbon dioxide and hydrogen can react under certain conditions to generate methane, that is, the target compound is methane. In another implementation, carbon dioxide and hydrogen can generate carbon monoxide under high-temperature conditions, that is, the target compound is carbon monoxide. In another implementation, carbon dioxide and hydrogen can generate methanol under high-temperature and high-pressure conditions with a catalyst, that is, the target compound is methanol. The reaction conditions of carbon dioxide and hydrogen can be adjusted according to actual needs to output the desired target compound.

[0032] In some embodiments, the first pipeline, the second pipeline, the third pipeline and the fourth pipeline used in the embodiments of the present application are used to connect the devices and transport steam, and therefore the pipelines can be made of high-temperature and high-pressure resistant materials to avoid steam leakage and other situations during steam transportation, and reduce resource consumption.

[0033] In the embodiments of the present application, steam is circulated in the spiral heat exchanger, the steam generator and the electrolytic cell, carbon dioxide and hydrogen are catalyzed to react in the spiral heat exchanger, the steam generator drives the steam turbine to drive the generator to generate electricity, and finally the electrolytic cell electrolyzes water to produce hydrogen. Therefore, the steam is fully utilized before the hydrogen is prepared, the carbon dioxide collector is used to extract carbon dioxide from the smoke and input into the spiral heat exchanger, and the carbon dioxide and the hydrogen input by the electrolytic cell react in the spiral heat exchanger to generate a new target compound, so that the carbon dioxide is fully utilized, the carbon emission is reduced, and the utilization rate of the overall energy is improved.

[0034] FIG. 2 is a structural schematic diagram of another coupling device for hydrogen production and carbon dioxide utilization provided by the embodiments of the present application. As shown in FIG. 2, the device comprises:

[0035] The spiral heat exchanger 100, the carbon dioxide collector 200, the steam generator 300 and the electrolytic cell 400.

[0036] The spiral heat exchanger 100 is connected with the steam generator 300 through a first pipe, the spiral heat exchanger 100 is connected with the electrolytic cell 400 through a second pipe, the spiral heat exchanger 100 is connected with the carbon dioxide collector 200 through a third pipe, and the steam generator 300 is connected with the electrolytic cell 400 through a fourth pipe and a cable.

[0037] The spiral heat exchanger 100 inputs steam into the steam generator 300 through the first pipe, the steam generator 300 generates electricity based on the steam, and transmits the electricity to the electrolytic cell 400 through the cable, and inputs the steam into the electrolytic cell 400 through the fourth pipe.

[0038] The carbon dioxide collector 200 collects carbon dioxide from smoke generated by combustion, and inputs the collected carbon dioxide into the spiral heat exchanger 100 through the third pipe.

[0039] The electrolytic cell 400 prepares hydrogen based on the steam and the electricity, and inputs the prepared hydrogen into the spiral heat exchanger 100 through the second pipe.

[0040] The spiral heat exchanger 100 is used to catalyze the chemical reaction of carbon dioxide and hydrogen, and outputs a target compound.

[0041] In some embodiments, the spiral heat exchanger 100 can include an insulation layer, a coil heat exchange interlayer, and a reaction kettle; as shown in FIG. 3, the reaction kettle is a hollow cylindrical shape; the coil heat exchange interlayer is arranged at the periphery of the reaction kettle and completely wraps the reaction kettle; and the insulation layer is arranged at the periphery of the coil heat exchange interlayer and completely wraps the coil heat exchange interlayer.

[0042] In the embodiments of the present application, steam is input into the coil heat exchange interlayer to make the reaction kettle reach a target gas pressure and a target temperature for catalyzing the chemical reaction of carbon dioxide and hydrogen, wherein the hydrogen and the carbon dioxide perform a chemical reaction in the reaction kettle to output a target compound. That is, the steam is input into the coil heat exchange interlayer, the steam flows in the coil heat exchange interlayer to increase the temperature in the reaction kettle, so that the reaction conditions required for the reaction of carbon dioxide and hydrogen, such as 30 atmospheres and 200 degrees Celsius, are reached, and the insulation layer is used to insulate the coil heat exchange interlayer and the reaction kettle, so that the carbon dioxide and the hydrogen can react for a long time.

[0043] It can be understood that, in order to ensure the effect of the reaction of carbon dioxide and hydrogen, the materials of the coil heat exchange interlayer, the reaction kettle, and the insulation layer should be selected to be good heat transfer materials, so that the reaction kettle can quickly reach the reaction conditions of carbon dioxide and hydrogen.

[0044] In some embodiments, the carbon dioxide collector 200 at least includes: an absorption tower 201, a regeneration tower 202 and a lean-rich liquid heat exchanger 203. The bottom of the absorption tower 201 is connected to the lean-rich liquid heat exchanger 203 through a fifth pipeline, and the top of the regeneration tower 202 is connected to the lean-rich liquid heat exchanger 203 through a sixth pipeline; the absorption tower 201 generates rich liquid based on smoke, and the rich liquid flows into the lean-rich liquid heat exchanger 203 through the fifth pipeline for heat exchange, and the heat-exchanged rich liquid flows into the regeneration tower 202 through the sixth pipeline; the regeneration tower 202 obtains carbon dioxide and regenerated carbon dioxide capture solution based on the rich liquid.

[0045] Further, the carbon dioxide capture solution flows into the lean-rich liquid heat exchanger 203 through a seventh pipeline for heat exchange, and the heat-exchanged carbon dioxide capture solution flows into the absorption tower 201 through an eighth pipeline; the carbon dioxide capture solution reacts with the smoke in the absorption tower to obtain regenerated rich liquid.

[0046] In some embodiments, the absorption tower 201 is a device for realizing absorption operation, and the gas-liquid two-phase flow mode in the tower can be countercurrent or cocurrent, and countercurrent operation is usually adopted, that is, the absorbent is added from the top of the tower and flows downward, and contacts with the gas flowing upward, and the liquid that has absorbed the absorbate is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower; in the embodiments of the present application, the carbon dioxide capture solution is added from the top of the absorption tower 201 and flows downward, and contacts with the smoke flowing upward, and the carbon dioxide in the smoke is absorbed to generate rich liquid at the bottom of the absorption tower 201; in some embodiments, the bottom of the absorption tower 201 can preexist part of the rich liquid, and the rich liquid flows into the lean-rich liquid heat exchanger 203 through the fifth pipeline for heat exchange treatment.

[0047] The regeneration tower 202 is a device for resolving the absorbed or adsorbed substances to restore the performance of the solvent or adsorbent, and in the embodiments of the present application, the regeneration tower 202 functions to resolve the carbon dioxide from the rich liquid to complete the capture of the carbon dioxide; that is, the rich liquid flows into the bottom of the regeneration tower from the top of the regeneration tower, and the rich liquid is heated at the bottom of the regeneration tower to make the chemical absorption reaction reverse, so as to obtain carbon dioxide and carbon dioxide capture solution.

[0048] The lean-rich liquid heat exchanger 203 functions to heat exchange the lean liquid and the rich liquid, and the inside of the lean-rich liquid heat exchanger 203 can include two channels, i.e., a lean liquid channel and a rich liquid channel, and the lean liquid and the rich liquid flow in the respective channels and heat exchange in the process, that is, the heat in the lean liquid is transferred to the rich liquid, and a more concentrated solution is formed in the rich liquid, so that the concentration in the lean liquid becomes more dilute.

[0049] The difference between the lean liquid and the rich liquid in the embodiments of the present application is whether it reacts with carbon dioxide. The rich liquid includes carbon dioxide, and the lean liquid does not include carbon dioxide. Therefore, the carbon dioxide capture solution obtained by the rich liquid based on the regeneration tower 202 is also the lean liquid.

[0050] In some embodiments, the regeneration tower 202 can include a heat exchanger 2021 arranged at the bottom region of the regeneration tower 202. The steam generator 300 is connected to the bottom of the regeneration tower 202 through a ninth pipeline, and the bottom of the regeneration tower 202 is connected to the electrolytic cell 400 through a tenth pipeline. The steam generator 300 inputs steam into the bottom of the regeneration tower 202 through the ninth pipeline. The heat exchanger 2021 performs heat exchange treatment on the rich liquid and the steam to obtain carbon dioxide and a carbon dioxide capture solution, and inputs the steam after the heat exchange treatment into the electrolytic cell 400 through the tenth pipeline. That is, a heat exchanger 2021 is arranged at the bottom of the regeneration tower 202. The steam generator 300 inputs steam into the bottom of the regeneration tower 202 through the ninth pipeline. The heat exchanger 2021 at the bottom of the regeneration tower 202 performs heat exchange treatment on the rich liquid and the steam to heat the rich liquid, so that the chemical absorption reaction is reversed, and carbon dioxide and a carbon dioxide capture solution are obtained. At the same time, the heat exchanger 2021 at the bottom of the regeneration tower 202 inputs the steam after the heat exchange treatment into the electrolytic cell 400 through the tenth pipeline, and hydrogen is prepared by electrolysis of water in the electrolytic cell 400.

[0051] In some embodiments, the heat exchanger 2021 can be a spiral heat exchanger. The spiral heat exchanger at the bottom of the regeneration tower performs heat exchange treatment on the rich liquid and the steam to heat the rich liquid for reverse reaction, and generates carbon dioxide and a carbon dioxide capture solution. At the same time, the steam after the heat exchange treatment of the spiral heat exchanger is input into the electrolytic cell 400 through the tenth pipeline, and hydrogen is prepared by electrolysis of water in the electrolytic cell 400.

[0052] Further, the coupling device for hydrogen production and carbon dioxide utilization in the embodiments of the present application can also be connected with a combustion device 500 outside. The combustion device 500 is used for burning to provide steam and smoke. For example, the combustion device 500 can be a boiler, and steam and smoke are generated by burning in the boiler.

[0053] In some embodiments, the combustion device 500 can also be connected with the electrolytic cell 400 through an eleventh pipeline. Oxygen generated when the electrolytic cell 400 prepares hydrogen is input into the combustion device 500 for combustion support. That is, oxygen generated in the process of electrolysis of water in the electrolytic cell for hydrogen production is input into the boiler for combustion support, realizing the recycling of resources.

[0054] It can be understood that the pipeline used for connection in the embodiments of the present application can be made of high-temperature and high-pressure resistant materials, and ensures that the gases such as steam, carbon dioxide and hydrogen do not leak during transportation, thereby reducing resource waste.

[0055] In some embodiments, the steam in the embodiments of the present application can be low-temperature steam extracted from a power plant, for example, steam at 40 atmospheres and above 200 degrees Celsius. When the steam is heat-exchanged in the spiral heat exchanger and flows into the steam generator, the steam temperature has a partial loss, and can reach 40 atmospheres and 200 degrees Celsius. The steam drives the steam turbine in the steam generator to drive the generator to generate electricity, and then enters the spiral heat exchanger at the bottom of the regeneration tower. At this time, the steam pressure and temperature are reduced, for example, 4 atmospheres and 130 degrees Celsius. After the steam is heat-exchanged with the rich liquid at the bottom of the regeneration tower, the temperature is reduced again, for example, 4 atmospheres and 90 degrees Celsius. Finally, the steam flows into the electrolytic tank for electrolysis of water to produce hydrogen, so that the steam is fully utilized.

[0056] In summary, the embodiments of the present application pass the temperature difference and pressure difference that need to be reduced into the steam generator to generate electricity, and the generated electric energy is provided for the subsequent electrolysis of water to produce hydrogen, thereby improving the utilization rate of steam. The working temperature of the electrolytic tank during the electrolysis of water to produce hydrogen is ideally about 80.5 degrees Celsius, and an increase in temperature is beneficial to the reaction, so that the liquefied steam (i.e., 90 degrees Celsius hot water) heat-exchanged with the rich liquid in the regeneration tower can be used as the material for the electrolysis of water to produce hydrogen, thereby fully utilizing the steam extracted from the power plant, and the steam cooling water does not contain other impurities, which can effectively guarantee the purity of the product of the electrolysis of water to produce hydrogen, and reduce the energy consumption caused by further purification of the product. The reaction conditions of the carbon dioxide hydrogenation to produce methanol are generally controlled at about 30 atmospheres and 200 degrees Celsius, which is moderate. The single atom as a catalytic material can better activate the carbon dioxide molecules, and the loading amount can also meet the industrial practicality requirements. The steam extracted from the power plant can be used to provide the target temperature and target pressure of the reaction for the reaction kettle, and the captured carbon dioxide and hydrogen produced by the electrolysis of water can be directly used to produce methanol.

[0057] In the embodiments of the present application, the process of hydrogen preparation and carbon dioxide capture and utilization is completed through the spiral heat exchanger, the carbon dioxide collector, the steam generator and the electrolytic cell. The absorption tower, the regeneration tower and the lean-liquid heat exchanger are arranged in the carbon dioxide collector to complete the continuous circulation between the rich liquid and the lean liquid in the absorption tower and the regeneration tower, so that the carbon dioxide capture is more efficient and convenient. The captured carbon dioxide and the prepared hydrogen are introduced into the spiral heat exchanger again to prepare target compounds, reduce carbon dioxide emission, and introduce oxygen generated in the process of electrolyzing water into the combustion equipment to assist combustion, so that all resources in the device can be fully utilized. Compared with the traditional steam which is only used as a heat source of the heat side of the carbon dioxide capture system, the steam is comprehensively utilized in the embodiments of the present application, which improves the comprehensive utilization rate of energy, reduces the carbon dioxide capture cost and system water consumption, and also generates electricity based on the steam generator and oxygen combustion, effectively improves the combustion efficiency of fuel, increases the carbon dioxide concentration in the smoke, realizes the benign capture and circulation of carbon dioxide.

[0058] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in the present application comply with relevant laws and regulations and do not violate public order and good customs.

[0059] It should be noted that the personal information from the user should be collected for legal and reasonable purposes, and should not be shared or sold outside these legal uses. In addition, such collection / sharing should be carried out after receiving the informed consent of the user, including but not limited to informing the user to read the user agreement / user notice before the user uses the function, and signing the agreement / authorization including authorization of relevant user information. In addition, any necessary steps should be taken to protect and ensure access to such personal information data, and ensure that other people with access to personal information data comply with their privacy policy and processes.

[0060] The present application is expected to provide embodiments in which the user can selectively prevent the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk is minimized by limiting data collection and deleting data. In addition, such personal information is de-identified, if applicable, to protect the privacy of the user.

[0061] In the foregoing detailed description, reference is made to descriptive terms such as "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. for describing various embodiments of the application. These descriptive terms are used for the purpose of the description and are not meant to limit or restrict the scope of the application. The use of these terms does not imply that the application is comprised of at least the described embodiments, or that the described embodiments are the only embodiments the application is comprised of. The scope of the application is not limited to the described embodiments, but is rather defined by the appended claims. In the description of the embodiments of the application, reference is made to the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" etc. which are meant to describe a particular feature, structure, material or characteristic included in at least one embodiment of the application. The illustrative description of these terms does not imply that the application is comprised of at least the described embodiments or that the described embodiments are the only embodiments the application is comprised of. In the description of the embodiments of the application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example described previously. Moreover, the described features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples of the application. Furthermore, the described embodiments or examples of the application and the features thereof can be combined and combined in any suitable manner, without contradicting each other, by those skilled in the art.

[0062] Furthermore, the terms "first", "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality" is at least two, for example two, three, etc., unless explicitly specified otherwise.

[0063] Any process or method descriptions or descriptions of the flow diagrams described herein or otherwise described in this application can be understood as representing the steps of a method or process, including a computer program in which the functions of the steps are performed by executable instructions. The preferred embodiments of this application include additional implementations in which the steps of the method or process are performed by a computer program that is executed by a computer or a processor. The program instructions can be stored on a computer-readable medium that can be accessed by a computer or a processor. The described processes can be implemented in software programs or computer programs that are executable on programmable systems.

[0064] The logic and / or steps represented in the flowcharts and / or described herein, for example, can be considered as a sequence of executable instructions stored in a computer readable medium, which can be executed by an instruction execution system, apparatus or device, such as a computer-based system, a processor-based system, or other system that can fetch the instructions from the instruction execution system, apparatus or device and execute the instructions, or a combination thereof. For the purposes of this specification, a "computer readable medium" can be any apparatus that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus or device. The computer readable medium can specifically be, but is not limited to, the following: an electronic connection (electronic apparatus) having one or more wires, a portable computer diskette (magnetic apparatus), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, and a portable compact disk read-only memory (CDROM). In addition, the computer readable medium can even be paper or other suitable medium upon which the program can be printed, because the program can be electronically obtained, for example, by optically scanning the paper or other medium, then

[0065] It should be understood that portions of the application can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As such, if implemented in hardware, and in another embodiment, any of the following technologies, known in the art, or a combination thereof, can be used: discrete logic circuitry having logic gates for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gates, programmable gate arrays (PGA), field programmable gate arrays (FPGA), and the like.

[0066] Those of ordinary skill in the art can understand that all or part of the steps carried out by the above-mentioned embodiment methods can be completed by programs instructing relevant hardware, and the programs can be stored in a computer readable storage medium. When the programs are executed, they include one of the steps of the method embodiments or a combination thereof.

[0067] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing module, or each of the units can be physically present separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0068] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A coupling device for hydrogen production and carbon dioxide utilization, comprising: The system includes a spiral heat exchanger, a carbon dioxide collector, a steam generator, and an electrolytic cell; wherein the spiral heat exchanger is connected to the steam generator via a first pipe, the spiral heat exchanger is connected to the electrolytic cell via a second pipe, the spiral heat exchanger is connected to the carbon dioxide collector via a third pipe, and the steam generator is connected to the electrolytic cell via a fourth pipe and a cable. The spiral heat exchanger inputs steam into the steam generator through the first pipe. The steam generator generates electricity based on the steam and transmits the electricity to the electrolytic cell through the cable. The steam is then input into the electrolytic cell through the fourth pipe. The carbon dioxide collector collects carbon dioxide from the smoke produced by combustion and inputs the collected carbon dioxide into the spiral heat exchanger through the third pipe. The electrolytic cell produces hydrogen based on the steam and the electrical energy, and the produced hydrogen is introduced into the spiral heat exchanger through the second pipe; The spiral heat exchanger is used to catalyze a chemical reaction between carbon dioxide and hydrogen, and output the target compound.

2. The apparatus according to claim 1, wherein, The carbon dioxide collector includes at least: An absorption tower, a regeneration tower, and a lean-rich liquid heat exchanger; wherein the bottom of the absorption tower is connected to the lean-rich liquid heat exchanger via a fifth pipe, and the top of the regeneration tower is connected to the lean-rich liquid heat exchanger via a sixth pipe. The absorption tower generates a rich liquid based on the smoke, and the rich liquid is flowed into the lean-rich liquid heat exchanger through the fifth pipe for heat exchange. The rich liquid after heat exchange is then flowed into the regeneration tower through the sixth pipe. The regeneration tower obtains carbon dioxide and a regenerated carbon dioxide capture solution based on the rich liquid.

3. The apparatus according to claim 2, wherein, The bottom of the regeneration tower is connected to the lean and rich liquid heat exchanger via a seventh pipe, and the top of the absorption tower is connected to the lean and rich liquid heat exchanger via an eighth pipe. The carbon dioxide capture solution flows into the lean and rich liquid heat exchanger through the seventh pipe for heat exchange, and the heat-exchanged carbon dioxide capture solution flows into the absorption tower through the eighth pipe. The carbon dioxide capture solution reacts with the smoke inside the absorption tower to obtain a regenerated rich solution.

4. The apparatus according to claim 2 or 3, wherein, The regeneration tower includes a heat exchanger located at the bottom of the regeneration tower. The steam generator is connected to the bottom of the regeneration tower via a ninth pipe, and the bottom of the regeneration tower is connected to the electrolytic cell via a tenth pipe. The steam generator introduces steam into the bottom of the regeneration tower through the ninth pipe. The heat exchanger performs heat exchange treatment on the rich liquid and the steam to obtain carbon dioxide and carbon dioxide capture solution. The heat-treated steam is then input into the electrolytic cell through the tenth pipe.

5. The apparatus according to any one of claims 1-4, wherein, The spiral heat exchanger includes an insulation layer, a coiled heat exchange jacket, and a reaction vessel; The reactor is a hollow cylinder; The coil-type heat exchange jacket is arranged around the reactor and completely encloses the reactor. The insulation layer is arranged around the coil-type heat exchange jacket and completely covers the coil-type heat exchange jacket.

6. The apparatus according to claim 5, wherein, The steam is introduced into the coiled heat exchange jacket to bring the reactor to the target pressure and temperature for catalyzing a chemical reaction between carbon dioxide and hydrogen, wherein the hydrogen and carbon dioxide undergo a chemical reaction in the reactor to produce the target compound.

7. The apparatus according to claim 6, wherein, The device is also connected to an external combustion device for burning the steam and the smoke.

8. The apparatus according to claim 7, wherein, The combustion device is connected to the electrolytic cell via an eleventh pipe. The oxygen produced when the electrolytic cell produces hydrogen is fed into the combustion device through the eleventh pipe for combustion support.

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