Coupling device for hydrogen production and carbon dioxide utilization

Abstract

The application provides a coupling device for hydrogen production and carbon dioxide utilization, which comprises a spiral heat exchanger, a carbon dioxide collector, a steam generator and an electrolytic cell; the spiral heat exchanger inputs steam into the steam generator through a first pipeline; the steam generator generates electric energy based on the steam and transmits the electric energy to the electrolytic cell through a cable; the steam is input into the electrolytic cell through a fourth pipeline; the carbon dioxide collector collects carbon dioxide from smoke generated by combustion and inputs the collected carbon dioxide into the spiral heat exchanger through a third pipeline; the electrolytic cell prepares hydrogen based on the steam and the electric energy and inputs the prepared hydrogen into the spiral heat exchanger through a second pipeline; and the spiral heat exchanger is used for catalyzing chemical reaction of carbon dioxide and hydrogen and outputs a target compound, thereby solving the technical problem of poor comprehensive utilization effect of steam in the prior art.

Description

Technical Field

[0001] This application relates to the field of chemical technology, and in particular to a coupling device for hydrogen production and carbon dioxide utilization. Background Technology

[0002] Carbon dioxide produced by the combustion of fossil fuels in thermal power plants is a greenhouse gas, and carbon dioxide capture is necessary to reduce the amount emitted into the atmosphere. Post-combustion chemical absorption of carbon dioxide is a relatively mature and widely used technology. It typically involves extracting high-temperature steam from the power plant to heat and regenerate the rich liquid in a regeneration tower. However, even the medium- and low-temperature steam extracted from the power plant still has a temperature and pressure higher than the required temperature of the hot-side fluid at the bottom of the regeneration tower. Current carbon dioxide capture systems generally de-heat and depressurize the extracted steam, which leads to some heat loss and poor overall utilization of the steam. Summary of the Invention

[0003] This application aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, the first objective of this application is to propose a coupling device for hydrogen production and carbon dioxide utilization, so as to achieve comprehensive utilization of resources and improve energy efficiency.

[0005] To achieve the above objectives, a first aspect of this application provides a coupling device for hydrogen production and carbon dioxide utilization, comprising:

[0006] 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.

[0007] 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.

[0008] 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;

[0009] 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;

[0010] The spiral heat exchanger is used to catalyze a chemical reaction between carbon dioxide and hydrogen, and output the target compound.

[0011] The hydrogen production and carbon dioxide utilization coupling device provided in this application fully utilizes steam before hydrogen production by circulating steam in a spiral heat exchanger, a steam generator, and an electrolyzer. A carbon dioxide collector extracts carbon dioxide from smoke and introduces it into the spiral heat exchanger. The carbon dioxide and hydrogen input from the electrolyzer react in the spiral heat exchanger to generate new target compounds, thus making full use of carbon dioxide, reducing carbon emissions, solving the problem of insufficient utilization of existing energy, and improving the overall energy utilization rate.

[0012] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0014] Figure 1 A schematic diagram of the structure of a coupling device for hydrogen production and carbon dioxide utilization provided in an embodiment of this application;

[0015] Figure 2 A schematic diagram of another coupling device for hydrogen production and carbon dioxide utilization provided in an embodiment of this application;

[0016] Figure 3 This is a schematic diagram of a spiral heat exchanger provided in an embodiment of this application. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0018] The coupling apparatus for hydrogen production and carbon dioxide utilization according to embodiments of this application is described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of a coupling device for hydrogen production and carbon dioxide utilization provided in an embodiment of this application. Figure 1 As shown, the device includes:

[0020] Spiral heat exchanger 100, carbon dioxide collector 200, steam generator 300 and electrolytic cell 400.

[0021] The spiral heat exchanger 100 is connected to the steam generator 300 through a first pipe, the spiral heat exchanger 100 is connected to the electrolytic cell 400 through a second pipe, the spiral heat exchanger 100 is connected to the carbon dioxide collector 200 through a third pipe, and the steam generator 300 is connected to the electrolytic cell 400 through a fourth pipe and a cable.

[0022] 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. Steam is then input into the electrolytic cell 400 through the fourth pipe.

[0023] The carbon dioxide collector 200 collects carbon dioxide from the smoke produced by combustion and inputs the collected carbon dioxide into the spiral heat exchanger 100 through a third pipe.

[0024] Electrolyzer 400 produces hydrogen based on steam and electricity, and the produced hydrogen is introduced into spiral heat exchanger 100 through a second pipe.

[0025] The spiral heat exchanger 100 is used to catalyze a chemical reaction between carbon dioxide and hydrogen and output the target compound.

[0026] In some implementations, the carbon dioxide collector 200 is mainly used to capture carbon dioxide in smoke, that is, to capture carbon dioxide in the flue gas emitted from combustion. Commonly used carbon dioxide separation technologies include chemical absorption and physical absorption. Chemical absorption utilizes acid and alkaline absorption, while physical absorption separates carbon dioxide through temperature swing or pressure swing adsorption. Optionally, the carbon dioxide collector 200 can also collect carbon dioxide through physical adsorption, membrane separation, cryogenic separation and other capture technologies to reduce carbon dioxide emissions.

[0027] For example, taking the sterically hindered amine AMP as an example, when AMP is prepared into a solution, the AMP solution will undergo a reversible chemical reaction with carbon dioxide (CO2). The reaction formula for AMP absorbing carbon dioxide is as follows: Carbon dioxide capture and absorption are achieved based on AMP.

[0028] In some implementations, the steam generator 300 can use high-temperature and high-pressure steam to drive a steam turbine, which in turn drives a generator to generate electricity, which provides power for the subsequent electrolyzer 400 to produce hydrogen; it can be understood that the electrolyzer 400 is used to electrolyze water to produce hydrogen.

[0029] In some implementations, the spiral heat exchanger 100 can be based on high-temperature and high-pressure steam to increase both temperature and pressure, thereby achieving the conditions for a chemical reaction between carbon dioxide and hydrogen. The spiral heat exchanger 100 has at least one region inside where carbon dioxide and hydrogen can react chemically. In some implementations, to ensure that carbon dioxide and hydrogen can react continuously, the spiral heat exchanger 100 can be made of insulating material so that the internal temperature of the spiral heat exchanger can meet the conditions for a reaction between carbon dioxide and hydrogen for a long time, thus outputting the target compound.

[0030] In some implementations, carbon dioxide and hydrogen can react under specific conditions to produce methane, meaning the target compound is methane; in others, carbon dioxide and hydrogen can react under high temperature conditions to produce carbon monoxide, meaning the target compound is carbon monoxide; still others, carbon dioxide and hydrogen can react under high temperature and high pressure with a catalyst to produce methanol, meaning 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.

[0031] In some implementations, the first, second, third, and fourth pipes used in this embodiment are intended to connect various devices and transport steam. Therefore, each pipe can be made of a material resistant to high temperature and high pressure to avoid steam leakage during steam transport and reduce resource consumption.

[0032] In this embodiment, steam flows through a spiral heat exchanger, a steam generator, and an electrolyzer. In the spiral heat exchanger, carbon dioxide and hydrogen react to catalyze a reaction. The steam generator drives a turbine to generate electricity, which is then fed into the electrolyzer to produce hydrogen through water electrolysis. This process ensures that the steam is fully utilized before hydrogen production. A carbon dioxide collector extracts carbon dioxide from the smoke and introduces it into the spiral heat exchanger. The carbon dioxide reacts with the hydrogen input from the electrolyzer in the spiral heat exchanger to generate new target compounds, further maximizing the utilization of carbon dioxide, reducing carbon emissions, and improving overall energy efficiency.

[0033] Figure 2 This is a schematic diagram of another coupling device for hydrogen production and carbon dioxide utilization provided in an embodiment of this application. Figure 2 As shown, the device includes:

[0034] Spiral heat exchanger 100, carbon dioxide collector 200, steam generator 300 and electrolytic cell 400.

[0035] The spiral heat exchanger 100 is connected to the steam generator 300 through a first pipe, the spiral heat exchanger 100 is connected to the electrolytic cell 400 through a second pipe, the spiral heat exchanger 100 is connected to the carbon dioxide collector 200 through a third pipe, and the steam generator 300 is connected to the electrolytic cell 400 through a fourth pipe and a cable.

[0036] 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. Steam is then input into the electrolytic cell 400 through the fourth pipe.

[0037] The carbon dioxide collector 200 collects carbon dioxide from the smoke produced by combustion and inputs the collected carbon dioxide into the spiral heat exchanger 100 through a third pipe.

[0038] Electrolyzer 400 produces hydrogen based on steam and electricity, and the produced hydrogen is introduced into spiral heat exchanger 100 through a second pipe.

[0039] The spiral heat exchanger 100 is used to catalyze a chemical reaction between carbon dioxide and hydrogen and output the target compound.

[0040] In some implementations, the spiral heat exchanger 100 may include an insulation layer, a coiled heat exchange jacket, and a reaction vessel; such as Figure 3 As shown, the reactor is a hollow cylinder; the coiled heat exchange jacket is arranged around the reactor and completely encloses it; the insulation layer is arranged around the coiled heat exchange jacket and completely encloses it.

[0041] In this embodiment, steam is introduced into the coiled heat exchange jacket to bring the reactor to the target pressure and temperature for catalyzing the chemical reaction between carbon dioxide and hydrogen. The hydrogen and carbon dioxide undergo a chemical reaction in the reactor, producing the target compound. Specifically, steam is introduced into the coiled heat exchange jacket, flowing within it to raise the temperature in the reactor to the required reaction conditions for the carbon dioxide and hydrogen reaction, such as 30 atmospheres of pressure and 200 degrees Celsius. An insulation layer is used to maintain the temperature of both the coiled heat exchange jacket and the reactor, allowing the carbon dioxide and hydrogen to react for an extended period.

[0042] Understandably, in order to ensure the effectiveness of the carbon dioxide and hydrogen reaction, the materials of the coiled heat exchange jacket, the reactor, and the insulation layer should be selected with good heat transfer performance so that the reactor can quickly reach the conditions for the carbon dioxide and hydrogen reaction.

[0043] In some implementations, the carbon dioxide collector 200 includes at least: 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 via a fifth pipe, and the top of the regeneration tower 202 is connected to the lean-rich liquid heat exchanger 203 via a sixth pipe. The absorption tower 201 generates a rich liquid based on the smoke, and the rich liquid flows into the lean-rich liquid heat exchanger 203 through the fifth pipe for heat exchange. The heat-exchanged rich liquid then flows into the regeneration tower 202 through the sixth pipe. The regeneration tower 202 obtains carbon dioxide and a regenerated carbon dioxide capture solution based on the rich liquid.

[0044] Furthermore, the carbon dioxide capture solution flows into the lean-rich liquid heat exchanger 203 through the seventh pipe for heat exchange, and the heat-exchanged carbon dioxide capture solution flows into the absorption tower 201 through the eighth pipe; the carbon dioxide capture solution reacts with the smoke in the absorption tower to obtain the regenerated rich liquid.

[0045] In some implementations, the absorption tower 201 is a device used to perform the absorption operation. The gas-liquid two-phase flow pattern inside the tower can be countercurrent or cocurrent, but countercurrent operation is usually adopted. That is, the absorbent is added from the top of the tower and flows from top to bottom, contacting the gas flowing from bottom to top. The liquid that has absorbed the absorbent is discharged from the bottom of the tower, and the purified gas is discharged from the top of the tower. In this embodiment, the carbon dioxide capture solution is added from the top of the absorption tower 201 and flows from top to bottom, contacting the smoke flowing from bottom to top. The carbon dioxide in the smoke is absorbed to generate a rich liquid at the bottom of the absorption tower 201. Optionally, a portion of the rich liquid can be pre-existing at the bottom of the absorption tower 201, and the rich liquid flows into the lean-rich liquid heat exchanger 203 through the fifth pipe for heat exchange treatment.

[0046] The regeneration tower 202 is a device used to desorb the absorbed or adsorbed substances to restore the performance of the solvent or adsorbent. In this embodiment, the function of the regeneration tower 202 is to desorb carbon dioxide from the rich liquid to complete the capture of carbon dioxide. That is, the rich liquid flows from the top of the regeneration tower to the bottom of the regeneration tower. The rich liquid is heated at the bottom of the regeneration tower to make the chemical absorption reaction proceed in reverse, so as to obtain carbon dioxide and carbon dioxide capture solution.

[0047] The function of the lean and rich liquid heat exchanger 203 is to exchange heat between the lean liquid and the rich liquid. The interior of the lean and rich liquid heat exchanger 203 can include two channels, namely the lean liquid channel and the rich liquid channel. The lean liquid and the rich liquid flow in their respective channels and exchange heat in the process. That is, the heat in the lean liquid is transferred to the rich liquid, forming a more concentrated solution in the rich liquid, making the concentration in the lean liquid more dilute.

[0048] In this embodiment, the difference between lean solution and rich solution lies in whether or not it reacts with carbon dioxide. Solution that reacts with carbon dioxide is rich solution, while solution that does not react with carbon dioxide is lean solution. Therefore, the carbon dioxide capture solution obtained by regeneration tower 202 based on rich solution is also lean solution.

[0049] In some implementations, the regeneration tower 202 may include a heat exchanger 2021, which is located in the bottom region of the regeneration tower 202. A steam generator 300 is connected to the bottom of the regeneration tower 202 via a ninth pipe, and the bottom of the regeneration tower 202 is connected to the electrolytic cell 400 via a tenth pipe. The steam generator 300 introduces steam into the bottom of the regeneration tower 202 via the ninth pipe, and the heat exchanger 2021 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 400 via the tenth pipe. 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 pipe. The heat exchanger 2021 at the bottom of the regeneration tower 202 performs heat exchange treatment on the rich liquid and the steam to achieve the purpose of heating the rich liquid, thereby making the chemical absorption reaction proceed in reverse to obtain carbon dioxide and carbon dioxide capture solution. At the same time, the heat exchanger 2021 at the bottom of the regeneration tower 202 inputs the heat-treated steam into the electrolyzer 400 through the tenth pipe, and the electrolyzer 400 performs water electrolysis to produce hydrogen.

[0050] Optionally, the heat exchanger 2021 can be a spiral heat exchanger. Based on the spiral heat exchanger at the bottom of the regeneration tower, the rich liquid and steam are heat exchanged to achieve the purpose of heating the rich liquid to carry out a reverse reaction, generating carbon dioxide and carbon dioxide capture solution. At the same time, the steam after heat exchange by the spiral heat exchanger is fed into the electrolyzer 400 through the tenth pipe, and the electrolyzer 400 electrolyzes water to produce hydrogen.

[0051] Furthermore, the coupling device for hydrogen production and carbon dioxide utilization in this embodiment can also be connected to an external combustion device 500. The combustion device 500 is used to provide steam and smoke through combustion. For example, the combustion device 500 can be a boiler, which generates steam and smoke through combustion.

[0052] In some implementations, the combustion device 500 can also be connected to the electrolyzer 400 via an eleventh pipe. The oxygen produced when the electrolyzer 400 produces hydrogen is fed into the combustion device 500 through the eleventh pipe for combustion support. In other words, the oxygen produced during the electrolysis of water to produce hydrogen in the electrolyzer is fed into the boiler through the eleventh pipe for combustion support, thus realizing the recycling of resources.

[0053] It is understood that the pipes used for connection in this embodiment can be made of materials resistant to high temperature and high pressure, and ensure that gases such as steam, carbon dioxide and hydrogen will not leak during transportation, thereby reducing resource waste.

[0054] In some implementations, the steam in this embodiment can be medium- or low-temperature steam extracted from a power plant, such as steam at 40 atmospheres and above 200 degrees Celsius. When the steam flows into the steam generator after heat exchange in the spiral heat exchanger, the steam temperature is partially lost, possibly reaching 40 atmospheres and 200 degrees Celsius. The steam in the steam generator drives the turbine to generate electricity, and then leaves the steam generator and enters the spiral heat exchanger at the bottom of the regeneration tower. At this point, the steam pressure and temperature will decrease, for example, to 4 atmospheres and 130 degrees Celsius. After heat exchange with the rich liquid at the bottom of the regeneration tower, the temperature of the steam will decrease again, for example, to 4 atmospheres and 90 degrees Celsius. Finally, the steam flows into the electrolyzer for water electrolysis to produce hydrogen, so that the steam is fully utilized.

[0055] In summary, to address the issue of heat loss caused by current steam de-cooling and de-pressure operations, this embodiment uses the reduced temperature and pressure difference to generate electricity from a steam generator. This electricity is then used for subsequent water electrolysis to produce hydrogen, improving steam utilization. The ideal operating temperature of the electrolyzer during water electrolysis is around 80.5 degrees Celsius. Higher temperatures promote the reaction, so liquefied steam (i.e., 90-degree Celsius hot water) obtained through heat exchange with the rich liquid in the regeneration tower can be used as the material for water electrolysis to produce hydrogen. This fully utilizes the steam extracted from the power plant, and the steam cooling water is free of other impurities, effectively ensuring the purity of the product and reducing energy consumption from further product purification. The reaction conditions for carbon dioxide hydrogenation to methanol are generally controlled at around 30 atmospheres and 200 degrees Celsius, which is suitable. Single atoms can effectively activate carbon dioxide molecules as catalysts, and the loading can meet the requirements for industrial practicality. Steam extracted from the power plant can be used to provide the target temperature and pressure for the reaction vessel, allowing the captured carbon dioxide and hydrogen produced from water electrolysis to be directly converted into methanol.

[0056] In this embodiment, hydrogen production and carbon dioxide capture and utilization are accomplished through a spiral heat exchanger, a carbon dioxide collector, a steam generator, and an electrolyzer. An absorption tower, a regeneration tower, and a lean-rich liquid heat exchanger are installed in the carbon dioxide collector to achieve continuous circulation between the rich and lean liquids in the absorption and regeneration towers, making carbon dioxide capture more efficient and convenient. The captured carbon dioxide and the produced hydrogen are then fed back into the spiral heat exchanger for the preparation of target compounds, reducing carbon dioxide emissions. Furthermore, the oxygen from the water electrolysis hydrogen production process is fed into the combustion equipment for combustion support, ensuring full utilization of all resources in the device. Compared to traditional systems where steam is only used as a heat source on the heat side of the carbon dioxide capture system, this embodiment comprehensively utilizes steam, improving the overall energy utilization rate while reducing carbon dioxide capture costs and system water consumption. Simultaneously, the steam generator generates electricity and provides oxygen for combustion support, effectively improving fuel combustion efficiency, increasing the carbon dioxide concentration in the smoke, and achieving a virtuous cycle of carbon dioxide capture.

[0057] The collection, storage, use, processing, transmission, provision, and disclosure of user personal information involved in this application all comply with the provisions of relevant laws and regulations and do not violate public order and good morals.

[0058] It should be noted that personal information collected from users should be used for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. Furthermore, such collection / sharing should only be conducted after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign an agreement / authorization that includes authorization of relevant user information before the user uses the function. In addition, any necessary steps must be taken to protect and safeguard access to such personal information data and ensure that others with access to personal information data comply with their privacy policies and procedures.

[0059] This application is intended to provide an implementation scheme for users to selectively prevent the use or access to their personal information data. Specifically, this disclosure is intended to provide hardware and / or software to prevent or block access to such personal information data. Once personal information data is no longer needed, risks can be minimized by restricting data collection and deleting data. Furthermore, where applicable, such personal information is de-identified to protect user privacy.

[0060] In the foregoing descriptions of the embodiments, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0063] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0064] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0065] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0066] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0067] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A coupling device for hydrogen production and carbon dioxide utilization, characterized in that, include: 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, characterized in that, 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, characterized in that, 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 3, characterized in that, 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, characterized in that, 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, characterized in that, The steam is introduced into the coiled heat exchange jacket to bring the reactor to the target pressure and target 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, characterized in that, 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, and the oxygen generated during the preparation of hydrogen in the electrolytic cell is input into the combustion device via the eleventh pipe for combustion support.

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