Hydrogen production and hydrogenation integrated device

Abstract

The utility model discloses a hydrogen production and hydrogenation integrated device, and relates to the technical field of hydrogen production, the hydrogen production and hydrogenation integrated device comprises an electric heater, a hydrogen-water separation device, a hydrogenation device and a passage switching assembly, the hydrogen-water separation device is used for outputting first to-be-treated hydrogen; the hydrogenation device is used for outputting second to-be-treated hydrogen; two input ends of the passage switching assembly are respectively connected with the hydrogen-water separation device and the hydrogenation device, and an output end of the passage switching assembly is connected with an input end of the electric heater; the access switching assembly is used for controlling the hydrogen-water separation device to be communicated with the electric heater, so that the electric heater performs heat treatment on the accessed first to-be-treated hydrogen; or, the hydrogenation device is controlled to be communicated with the electric heater, so that the electric heater conducts heat treatment on the accessed second to-be-treated hydrogen. Therefore, the electric heater can run all the time, the time required by cold start preheating is eliminated, and the problem that the cold start time is too long is effectively solved.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and in particular to an integrated hydrogen production and hydrogen refueling device. Background Technology

[0002] Hydrogen production via water electrolysis is environmentally friendly, yielding green hydrogen after processing in a hydrogen production unit. This unit typically uses an electric heater to heat-treat the crude hydrogen, allowing it to enter downstream reaction processes. However, the electric heater suffers from a prolonged cold start-up time, which negatively impacts hydrogen production efficiency and increases energy consumption. Utility Model Content

[0003] The main purpose of this application is to propose an integrated hydrogen production and hydrogen refueling device, which aims to solve the problem of excessively long cold start time of electric heaters.

[0004] To achieve the above objectives, this application proposes an integrated hydrogen production and hydrogenation device, comprising:

[0005] Electric heater;

[0006] A hydrogen-water separation unit is used to output the first batch of hydrogen gas to be processed;

[0007] A hydrogenation unit, used to output a second batch of hydrogen to be processed;

[0008] A pathway switching component, wherein the two input terminals of the pathway switching component are respectively connected to the hydrogen-water separation device and the hydrogenation device, and the output terminal of the pathway switching component is connected to the input terminal of the electric heater;

[0009] The pathway switching component is used to control the connection between the hydrogen-water separation device and the electric heater, so that the electric heater can heat-treat the first hydrogen gas to be treated; or, to control the connection between the hydrogen refueling device and the electric heater, so that the electric heater can heat-treat the second hydrogen gas to be treated.

[0010] In one embodiment, the integrated hydrogen production and hydrogen refueling device further includes an electronic control component, which is electrically connected to the pathway switching component;

[0011] The electronic control component is used to detect the gas pressure and gas purity output by the hydrogen-water separation device, and to control the operation of the channel switching component based on the detected gas pressure and gas purity.

[0012] In one embodiment, the electronic control component includes:

[0013] A gas detection component is connected to the output end of the hydrogen-water separator and is used to detect the gas pressure and gas purity output by the hydrogen-water separator.

[0014] A first controller is electrically connected to the gas detection component and the channel switching component, respectively, and is used to control the operation of the channel switching component according to the detected gas pressure and gas purity.

[0015] In one embodiment, the pathway switching component includes a first control valve and a second control valve;

[0016] The first control valve is located between the output end of the hydrogen-water separation device and the input end of the electric heater, and the second control valve is located between the output end of the hydrogenation device and the input end of the electric heater.

[0017] The first control valve is used to control the connection between the hydrogen-water separation device and the electric heater, and the second control valve is used to control the disconnection between the hydrogenation device and the electric heater;

[0018] Alternatively, the first control valve is used to disconnect the hydrogen-water separation device from the electric heater, and the second control valve is used to connect the hydrogenation device to the electric heater.

[0019] In one embodiment, the hydrogen refueling device includes a heat exchanger, and the integrated hydrogen production and refueling device further includes a deoxygenator and an output switching path;

[0020] The input terminal of the output switching path is connected to the output terminal of the electric heater, and the two output terminals of the output switching path are respectively connected to the first input terminal of the heat exchanger and the input terminal of the deaerator.

[0021] The output terminal of the electric heater is used to output heat-treated hot hydrogen gas, and the output switching path is used to control the connection between the electric heater and the deaerator so that the electric heater outputs the hot hydrogen gas to the deaerator; or, to control the connection between the electric heater and the heat exchanger so that the electric heater outputs the hot hydrogen gas to the heat exchanger.

[0022] In one embodiment, the output switching path includes a third control valve and a fourth control valve;

[0023] The third control valve is located between the output end of the electric heater and the input end of the deaerator, and the fourth control valve is located between the output end of the electric heater and the first input end of the heat exchanger;

[0024] The third control valve is used to control the connection between the electric heater and the deaerator, and the fourth control valve is used to control the disconnection between the electric heater and the heat exchanger;

[0025] Alternatively, the third control valve is used to control the electric heater to disconnect from the deaerator, and the fourth control valve is used to control the electric heater to connect to the heat exchanger.

[0026] In one embodiment, the hydrogenation device further includes a pretreatment device, the output of which is used to output the second hydrogen gas to be treated, and the output of which is connected to the first input of the heat exchanger.

[0027] A fifth control valve is provided between the output end of the pretreatment device and the first input end of the heat exchanger; the fifth control valve is used to control the connection between the pretreatment device and the heat exchanger, or to control the disconnection between the pretreatment device and the heat exchanger.

[0028] In one embodiment, the deoxygenator is used to deoxygenate the input hot hydrogen gas, and the output end of the deoxygenator is connected to the input end of the pretreatment device to output the deoxygenated hydrogen gas to the pretreatment device.

[0029] In one embodiment, the second input terminal of the heat exchanger is used to input hot high-pressure gas for heat exchange with the input hydrogen gas.

[0030] The heat exchanger is equipped with a flow valve at its second input end, which is used to control the flow rate of the hot high-pressure gas input at the second input end.

[0031] In one embodiment, the heat exchanger has a temperature detection component at its first input terminal, which is used to detect the flow temperature at the first input terminal.

[0032] The integrated hydrogen production and hydrogenation device also includes a second controller, which is electrically connected to the temperature detection component and the flow valve, respectively, and is used to control the operation of the flow valve according to the flow temperature.

[0033] The two input terminals of the pathway switching component are connected to the hydrogen-water separation unit and the hydrogen refueling unit, respectively, and the output terminal of the pathway switching component is connected to the input terminal of the electric heater. It is used to flexibly switch the flow path of the hydrogen to be processed input to the electric heater according to the hydrogen production operation status and demand, so as to complete the switching and adjustment between the hydrogen production unit and the hydrogen refueling unit.

[0034] Electric heaters are used to provide the necessary heat for hydrogen production or hydrogenation reactions, so that the reaction reaches and maintains the required temperature conditions to meet the requirements of subsequent processes.

[0035] When the gas output from the hydrogen-water separator meets the requirements, the pathway switching component controls the connection between the hydrogen-water separator and the electric heater, enabling the electric heater to heat-treat the first batch of hydrogen to be processed. When the gas output from the hydrogen-water separator does not meet the requirements, the pathway switching component controls the connection between the hydrogen addition device and the electric heater, enabling the electric heater to heat-treat the second batch of hydrogen to be processed. This allows the electric heater to run continuously, eliminating the time required for cold start preheating and effectively solving the problem of excessively long cold start time for the electric heater. This improves hydrogen production efficiency, reduces energy consumption, and extends equipment lifespan.

[0036] The second hydrogen gas to be processed is fed into the electric heater via a hydrogenation device, allowing the electric heater to heat the second hydrogen gas and maintain its operation, thus solving the problem that the electric heater may need to stop heating due to the lack of processing medium. The coupling of the hydrogen production device and the hydrogenation device also enables the first hydrogen gas to be processed, obtained through gas-liquid separation, to participate in subsequent purification steps in a timely and efficient manner. This saves energy, collects more hydrogen products, and ultimately improves energy utilization and the yield of pure hydrogen products, while ensuring the safe and stable operation of the hydrogen production process. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0038] Figure 1 A schematic diagram of an embodiment of the integrated hydrogen production and hydrogenation apparatus provided in this application;

[0039] Figure 2 A schematic diagram of an embodiment of the hydrogen production apparatus provided in this application;

[0040] Figure 3 A schematic diagram of an embodiment of the hydrogenation apparatus provided in this application;

[0041] Figure 4 This is a schematic diagram of a module of an embodiment of the integrated hydrogen production and hydrogenation apparatus provided in this application.

[0042] Explanation of icon numbers:

[0043] 100. Hydrogen production unit; 101. Gas inlet; 102. Gas outlet; 110. Electric heater; 120. Hydrogen-water separator; 130. Deoxygenator;

[0044] 200. Hydrogenation unit; 201. First gas inlet; 202. Second gas inlet; 203. Oil inlet; 210. Heat exchanger; 2101. First input terminal; 2102. Second input terminal; 2103. First output terminal; 2104. Second output terminal; 220. Pretreatment unit; 221. Compressor; 230. Reaction furnace; 2301. Fuel gas inlet; 240. Hydrogenation reactor; 250. High-precision separator;

[0045] 300. Path switching component; 310. First control valve; 320. Second control valve;

[0046] 400. Electrical control components; 410. Gas detection components; 420. First controller;

[0047] 500, Output switching path; 510, Third control valve; 520, Fourth control valve;

[0048] 600. Fifth control valve;

[0049] 710. Flow valve; 720. Temperature detection component; 730. Second controller.

[0050] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0052] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0053] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0054] Hydrogen production units typically use electric heaters to heat-treat the produced crude hydrogen, allowing it to enter downstream reaction units. Purification of the hydrogen production unit generally requires that the output hydrogen from gas-liquid separation be qualified and the system stabilize before starting up. However, due to the significant fluctuations in photovoltaic hydrogen production, upstream electrolyzers and hydrogen-water separation units frequently shut down due to wind and solar power fluctuations. Consequently, purification is also affected and may be shut down. The purification unit will only restart after the upstream units stabilize and all parameters are qualified. In other words, due to the intermittency and instability of wind and solar power generation, electrolyzers may be forced to reduce load or even shut down due to insufficient power supply or fluctuations in wind and solar power. Only after the upstream units stabilize and all parameters are qualified will the purification unit gradually start up and begin operation. The stability of the upstream units is determined by whether they can produce qualified crude hydrogen. If the upstream units cannot produce qualified crude hydrogen, the electric heaters in the purification unit may need to stop heating due to the lack of a processing medium; otherwise, dry burning of the equipment may occur, damaging the equipment and potentially leading to property damage and production accidents. However, starting the electric heater only after the gas output from the upstream unit meets the required standards can easily lead to excessively long cold start times. A cold start refers to the operation of a device or system at a lower temperature or in its initial state. During this process, because the device or system has not yet reached a stable operating state, its processing capacity and efficiency may be lower. Purification units typically need to operate under specific temperature and pressure conditions to ensure the optimal performance of the catalyst and desiccant in the hydrogen purification stage. During a cold start, impurities in the crude hydrogen may not be fully adsorbed or reacted by the catalyst and desiccant, which not only shortens the lifespan of the purification unit's catalyst and desiccant, affecting equipment lifespan, but also causes a large amount of untreated hydrogen to be vented, affecting hydrogen production efficiency, increasing energy consumption, and resulting in a significant waste of electrical energy and crude hydrogen products.

[0055] To reduce the cold start time of electric heaters, such as Figure 1As shown, this application proposes an integrated hydrogen production and refueling device. The integrated hydrogen production and refueling device includes an electric heater 110, a hydrogen-water separation device 120, a hydrogen refueling device 200, and a pathway switching component 300.

[0056] Understandably, the integrated hydrogen production and reprocessing unit is mainly used to solve the problem of excessively long cold start time for the electric heater 110 in the hydrogen purification section of the hydrogen production unit 100 during the hydrogen production process. For example... Figure 2 As shown, the hydrogen production device 100 has an inlet 101. The hydrogen production device 100 includes at least the aforementioned electric heater 110 and hydrogen-water separation device 120, and the electric heater 110 and hydrogen-water separation device 120 serve as purification devices for separating water from hydrogen. The hydrogen production device 100 receives crude hydrogen (such as crude hydrogen from an upstream gas-liquid separation device) through the inlet 101. The hydrogen-water separation device 120 performs gas-water separation on the crude hydrogen entering the hydrogen production device through the inlet 101 to remove water from the hydrogen. The processed crude hydrogen is then transferred to the electric heater 110, where it undergoes heat treatment before being transferred to downstream devices for further purification of the hydrogen.

[0057] The hydrogen production and hydrogenation integrated device of this application, by introducing a hydrogenation device 200 and a path switching component 300, keeps the electric heater 110 constantly on. The hydrogen-water separation device 120 is used to output the first type of hydrogen to be processed; the hydrogenation device 200 is used to output the second type of hydrogen to be processed.

[0058] Understandably, the first hydrogen gas to be processed output by the hydrogen-water separation unit 120 is specifically the crude hydrogen obtained after gas-liquid separation and hydrogen-water separation. For example... Figure 3 The hydrogenation unit 200 shown can be, but is not limited to, an aromatic oil hydrogenation unit or other hydrogenation units. Taking an aromatic oil hydrogenation unit as an example, the hydrogenation unit 200 uses a mixed oil slurry as raw material. The mixed oil slurry, hydrogen, catalyst, etc., react under high temperature and high pressure, thereby significantly reducing the sulfur content and heavy oil components of the mixed oil slurry, and obtaining light, high-value-added oil products, such as automotive gasoline and diesel. Therefore, the second hydrogen to be processed output by the hydrogenation unit 200 can be, but is not limited to, hydrogen obtained by compression treatment before preheating treatment; or hydrogen recovered after hydrogenation treatment of the mixed oil slurry; or hydrogen obtained by mixing before the preheating treatment step (including hydrogen obtained by compression treatment and hydrogen recovered after hydrogenation treatment); or hydrogen obtained in the intermediate preheating stage of multi-stage preheating, etc. The specific second hydrogen to be processed input to the hydrogenation unit 200 can be set according to actual conditions; it is not limited here.

[0059] The two input terminals of the pathway switching component 300 are connected to the hydrogen-water separation device 120 and the hydrogen refueling device 200, respectively, and the output terminal of the pathway switching component 300 is connected to the input terminal of the electric heater 110. The pathway switching component 300 is used to control the connection between the hydrogen-water separation device 120 and the electric heater 110, so that the electric heater 110 heats the first hydrogen gas to be processed; or, to control the connection between the hydrogen refueling device 200 and the electric heater 110, so that the electric heater 110 heats the second hydrogen gas to be processed.

[0060] The pathway switching component 300 has two input terminals and one output terminal, used to connect the output terminals of the hydrogen-water separator 120 and the hydrogen refueling device 200 to the input terminal of the electric heater 110, respectively, and selectively connect the hydrogen-water separator 120 to the electric heater 110, or the hydrogen refueling device 200 to the electric heater 110. This allows for flexible switching of the flow path of the hydrogen gas to be processed into the electric heater 110 according to the hydrogen production operation status and demand, completing the switching and adjustment between the hydrogen production device 100 and the hydrogen refueling device 200. The pathway switching component 300 may include, but is not limited to, a series of valve switches, pipelines, and control systems. By controlling the opening and closing states of the valve switches, the flow direction and path of the hydrogen gas to be processed can be changed, and the amount of hydrogen gas to be processed connected to the electric heater 110 can be controlled.

[0061] In this embodiment, as Figure 1The electric heater 110 shown is used to convert electrical energy into heat energy and heat the input hydrogen gas to be processed (either the first or second hydrogen gas to be processed) to provide the necessary heat for the hydrogen production or hydrogenation reaction, so that the reaction reaches and maintains the required temperature conditions to meet the requirements of subsequent hydrogen purification, hydrogenation preheating, and other processes. To reduce the cold start time of the electric heater 110, the electric heater 110 is kept constantly on. Taking the second hydrogen gas to be processed as hydrogen obtained through compression or hydrogen obtained by mixing before the preheating step as an example, the second hydrogen gas to be processed obtained after compression in the hydrogenation device 200 is introduced into the electric heater 110 for heating, which can realize the coupling of the hydrogen production device 100 and the hydrogenation device 200. When all indicators of the upstream gas-liquid post-processing unit are normal, meaning the upstream gas-liquid post-processing unit is operating normally and the gas output from the hydrogen-water separation unit meets the requirements, the path switching component 300 controls the hydrogen-water separation unit 120 to connect with the electric heater 110, so that the electric heater 110 heat-treats the first batch of hydrogen to be processed. When all indicators of the upstream gas-liquid post-processing unit are abnormal, meaning the upstream gas-liquid post-processing unit is not operating normally and the gas output from the hydrogen-water separation unit does not meet the requirements, the path switching component 300 controls the hydrogen addition unit 200 to connect with the electric heater 110, so that the electric heater 110 heat-treats the second batch of hydrogen to be processed. In this way, the electric heater 110 can be continuously operated, instead of waiting for the upstream gas-liquid post-processing unit to operate normally, effectively eliminating the time required for cold start preheating of the electric heater 110 and solving the problem of excessively long cold start time; it can also improve the utilization rate of catalysts, desiccants, etc. in the purification unit, improve hydrogen production efficiency, reduce energy consumption, and extend equipment service life.

[0062] In this embodiment, the second hydrogen to be processed is input into the electric heater 110 through the hydrogenation device 200, allowing the electric heater 110 to heat the second hydrogen to be processed. This ensures that the electric heater 110 remains operational and also solves the problem that the electric heater 110 may need to stop heating due to a lack of processing medium. The coupling of the hydrogen production device 100 and the hydrogenation device 200 also enables the first hydrogen to be processed (crude hydrogen) obtained through gas-liquid separation and hydrogen-water separation to participate in subsequent purification steps such as catalytic deoxygenation in a timely and efficient manner. This saves energy, collects more hydrogen products, and ultimately improves energy utilization and the yield of pure hydrogen products (green hydrogen); and ensures the safe and stable operation of the hydrogen production process.

[0063] In other embodiments of this application, in addition to connecting the two input terminals of the path switching component 300 to the hydrogen-water separation device 120 and the hydrogen refueling device 200 respectively, and connecting the output terminal of the path switching component 300 to the input terminal of the electric heater 110, the path switching component 300 may also have one or more other input terminals. These other input terminals are used to connect to other hydrogen-water separation devices, hydrogen storage devices, and other devices that can be used to output hydrogen. The specific configuration can be determined according to actual conditions and is not limited here.

[0064] In the embodiments of this application, the hydrogen production and hydrogen refueling integrated device can be operated manually to control the operation of the path switching component 300; or, the operation of the path switching component 300 can be controlled electronically to achieve automated control of the flow path switching.

[0065] like Figure 4 As shown, in one embodiment, the integrated hydrogen production and refueling device further includes an electronic control component 400, which is electrically connected to the channel switching component 300. The electronic control component 400 is used to detect the gas pressure and gas purity output by the hydrogen-water separation device 120, and to control the operation of the channel switching component based on the detected gas pressure and gas purity.

[0066] For example, depending on the system settings and operating status, the output gas pressure of the hydrogen-water separator 120 can be set to be between 0.3MPa and 0.4MPa (e.g., 0.33MPa, 0.35MPa, 0.37MPa) and the gas purity to be between 99% and 100% (e.g., 99.5%, 99.7%, 99.8%, 99.9%), so that the output gas pressure and gas purity meet the requirements. The specific settings can be made according to actual conditions and are not limited here.

[0067] When the gas pressure and purity output from the hydrogen-water separator 120 meet the requirements, the upstream gas-liquid post-processing device is determined to be operating normally. The electronic control component 400 outputs a corresponding first control signal to the path switching component 300, which controls the hydrogen-water separator 120 to connect with the electric heater 110, allowing the electric heater 110 to heat-treat the incoming first hydrogen gas. When the gas pressure and purity output from the hydrogen-water separator 120 do not meet the requirements, the upstream gas-liquid post-processing device is determined to be operating abnormally. The electronic control component 400 outputs a corresponding second control signal to the path switching component 300, which controls the hydrogen refueling device 200 to connect with the electric heater 110, allowing the electric heater 110 to heat-treat the incoming second hydrogen gas. The electronic control component 400 enables automated control of the flow path switching, reducing reliance on manual labor. By automatically controlling the path switching component based on the detected gas pressure and purity output from the hydrogen-water separator 120, response time is reduced, and operational reliability and stability are improved.

[0068] like Figure 4 As shown, in one embodiment, the electronic control component 400 includes a gas detection component 410 and a first controller 420. The gas detection component 410 is connected to the output terminal of the hydrogen-water separation device 120 and is used to detect the gas pressure and gas purity output by the hydrogen-water separation device 120. The first controller 420 is electrically connected to the gas detection component 410 and the channel switching component 300, respectively, and is used to control the operation of the channel switching component according to the detected gas pressure and gas purity.

[0069] The electronic control component 400 may include, but is not limited to, a first controller 420, a gas detection component 410, and a power module. It is used to detect and control the operating status of the integrated hydrogen production and refueling device. For example, the gas detection component 410 can detect the gas pressure and purity output by the hydrogen-water separation device 120. The gas detection component 410 may include pressure detection devices such as pressure sensors and purity detection devices such as online analyzers. The pressure detection device is connected to the output terminal of the hydrogen-water separation device 120 and is used to detect the gas pressure at the output terminal of the hydrogen-water separation device 120. The purity detection device is connected to the output terminal of the hydrogen-water separation device 120 and is used to detect the gas purity at the output terminal of the hydrogen-water separation device 120. Alternatively, the gas detection component 410 may employ a gas detection device that integrates both gas pressure detection and purity detection functions. The first controller 420 may include a microprocessor, a single-chip microcomputer, etc. The first controller 420 is used to receive gas pressure, gas purity and other detection signals transmitted by the gas detection component 410, calculate the optimal flow path of the hydrogen to be processed through pre-stored algorithms, and send a control signal to the path switching component 300. The path switching component 300 controls the opening and closing of the corresponding flow path to achieve precise control of the flow path of the hydrogen to be processed.

[0070] In addition, in other embodiments of this application, besides controlling the operation of the path switching component based on the gas pressure and gas purity output by the hydrogen-water separator 120, the operating time can also be preset based on daily operating data or operating condition simulation data. This is used to control the abnormal operation of the upstream gas-liquid after-treatment device before the preset operating time is reached, and to control the normal operation of the upstream gas-liquid after-treatment device after the preset operating time is reached.

[0071] like Figure 1 As shown, in one embodiment, the pathway switching assembly 300 includes a first control valve 310 and a second control valve 320. The first control valve 310 is located between the output end of the hydrogen-water separation device 120 and the input end of the electric heater 110, and the second control valve 320 is located between the output end of the hydrogenation device 200 and the input end of the electric heater 110.

[0072] The first control valve 310 and the second control valve 320 are interlocked to control one of the two input paths of the electric heater 110 to be connected and the other to be disconnected, based on the gas pressure and gas purity output by the hydrogen-water separator 120.

[0073] The first control valve 310 is used to control the connection between the hydrogen-water separation device 120 and the electric heater 110, and the second control valve 320 is used to control the disconnection between the hydrogen refueling device 200 and the electric heater 110; or, the first control valve 310 is used to control the disconnection between the hydrogen-water separation device 120 and the electric heater 110, and the second control valve 320 is used to control the connection between the hydrogen refueling device 200 and the electric heater 110.

[0074] In some specific embodiments, when the gas output from the hydrogen-water separator meets the requirements, the first control valve 310 is used to control the output end of the hydrogen-water separator 120 to connect with the input end of the electric heater 110, and the second control valve 320 is used to control the output end of the hydrogen refueling device 200 to disconnect from the input end of the electric heater 110; the electric heater 110 is used to heat-treat the first hydrogen to be processed delivered by the hydrogen-water separator 120 to ensure the normal operation of the hydrogen production device 100. When the gas output from the hydrogen-water separator does not meet the requirements, the first control valve 310 is used to disconnect the output end of the hydrogen-water separator 120 from the input end of the electric heater 110, and the second control valve 320 is used to connect the output end of the hydrogen filling device 200 to the input end of the electric heater 110. The second hydrogen to be processed is input to the electric heater 110 through the hydrogen filling device 200, so that the electric heater 110 can heat the second hydrogen to be processed, thereby enabling the electric heater 110 to maintain its working state. This solves the problem that the electric heater 110 in operation may need to stop heating due to the lack of processing medium, allowing the electric heater 110 to run continuously instead of waiting for the gas output from the hydrogen-water separator to meet the requirements. This eliminates the time required for cold start preheating of the electric heater 110 and effectively solves the problem of excessively long cold start time.

[0075] In other embodiments of this application, in addition to configuring the path switching component 300 to include the aforementioned first control valve 310 and second control valve 320, the path switching component 300 can also be configured as a single-pole double-throw switch to control one of the two input paths of the electric heater 110 to be connected and the other to be disconnected; or, various types of switching modules such as a sliding switch and a multi-mode selection switch can be provided between the hydrogen-water separation device 120 and the electric heater 110 to realize the switching between abnormal operation mode and normal operation mode, so as to control the hydrogen-water separation device 120 to be connected to the electric heater 110 in the normal operation mode, and control the hydrogen refueling device 200 to be connected to the electric heater 110 in the abnormal operation mode.

[0076] like Figure 1 As shown, in one embodiment, the hydrogen refueling device 200 includes a heat exchanger 210, and the integrated hydrogen production and refueling device also includes a deoxygenator 130 and an output switching path 500.

[0077] Understandably, the hydrogen production device 100 has an outlet 102 and also includes a deoxygenator 130. The first hydrogen gas to be processed is heat-treated by an electric heater 110. The hot hydrogen gas obtained after heat treatment enters the deoxygenator 130 for catalytic deoxygenation reaction and is then discharged through the outlet 102.

[0078] The hydrogenation unit 200 also includes a heat exchanger 210. In the hydrogenation reaction, hydrogen and raw materials (such as mixed oil slurry of aromatic oil) need to react at a certain temperature. The heat exchanger 210 can be used to preheat the raw materials and specifically to transfer externally supplied heat to the hydrogen or reaction mixture (hydrogen and raw materials) to reach the temperature required for the reaction, thereby promoting the hydrogenation reaction.

[0079] The input terminal of the output switching path 500 is connected to the output terminal of the electric heater 110, and the two output terminals of the output switching path 500 are respectively connected to the first input terminal 2101 of the heat exchanger 210 and the input terminal of the deoxidizer 130. The output terminal of the electric heater 110 is used to output heat-treated hot hydrogen gas, and the output switching path 500 is used to control the connection between the electric heater 110 and the deoxidizer 130 so that the electric heater 110 outputs hot hydrogen gas to the deoxidizer 130; or, to control the connection between the electric heater 110 and the heat exchanger 210 so that the electric heater 110 outputs hot hydrogen gas to the heat exchanger 210.

[0080] The first input terminal 2101 of the heat exchanger 210 serves as the hydrogen input terminal for inputting hydrogen. The output switching path 500 has one input terminal and two output terminals, used to connect the output terminal of the electric heater 110 to the input terminal of the deoxidizer 130 and the first input terminal 2101 of the heat exchanger 210, respectively, and selectively connect the electric heater 110 to the deoxidizer 130, or connect the electric heater 110 to the heat exchanger 210. This allows for flexible switching of the flow path of the hot hydrogen output from the electric heater 110 according to the hydrogen production operating status and demand, completing the switching and adjustment between the hydrogen production unit 100 and the hydrogen refueling unit 200. The output switching path 500 may include, but is not limited to, a series of valve switches, pipelines, and control systems. By controlling the opening and closing states of the valve switches, the flow path of the output hot hydrogen can be changed.

[0081] like Figure 1 As shown, in one embodiment, the output switching path 500 includes a third control valve 510 and a fourth control valve 520. The third control valve 510 is located between the output end of the electric heater 110 and the input end of the deaerator 130, and the fourth control valve 520 is located between the output end of the electric heater 110 and the first input end 2101 of the heat exchanger 210.

[0082] The third control valve 510 and the fourth control valve 520 are interlocked to control one of the two output paths of the electric heater 110 to be connected and the other to be disconnected, based on the gas pressure and gas purity output by the hydrogen-water separator 120.

[0083] The third control valve 510 is used to control the connection between the electric heater 110 and the deaerator 130, and the fourth control valve 520 is used to control the disconnection between the electric heater 110 and the heat exchanger 210; or, the third control valve 510 is used to control the disconnection between the electric heater 110 and the deaerator 130, and the fourth control valve 520 is used to control the connection between the electric heater 110 and the heat exchanger 210.

[0084] It should be noted that the electric heater 110 is connected to the hydrogen-water separation device 120 and the hydrogen addition device 200 respectively through the circuit switching component 300. The purity and other gas parameters of the first hydrogen to be processed output by the hydrogen-water separation device 120 are different from the purity and other gas parameters of the second hydrogen to be processed output by the hydrogen addition device 200. Therefore, the hot hydrogen obtained after heat treatment of the first hydrogen to be processed is different from the hot hydrogen obtained after heat treatment of the second hydrogen to be processed.

[0085] like Figure 1 As shown, in some specific embodiments, in order to eliminate the impact of the second hot hydrogen obtained after the second hydrogen to be processed is heat-treated on the downstream facilities of the hydrogen production and purification device, the first hot hydrogen and the second hot hydrogen are used to distinguish the first hydrogen to be processed and the hot hydrogen obtained after the second hydrogen to be processed is heat-treated, and are associated with the first control valve 310, the second control valve 320, the third control valve 510 and the fourth control valve 520. When the gas output from the hydrogen-water separator meets the requirements, the first control valve 310 is used to connect the output end of the hydrogen-water separator 120 to the input end of the electric heater 110, the second control valve 320 is used to disconnect the output end of the hydrogenation device 200 from the input end of the electric heater 110, the third control valve 510 is used to connect the output end of the electric heater 110 to the input end of the deoxygenator 130, and the fourth control valve 520 is used to disconnect the output end of the electric heater 110 from the first input end of the heat exchanger 210. When the gas output from the hydrogen-water separator meets the requirements, the electric heater 110 heat-treats the first hydrogen gas to be processed from the hydrogen-water separator 120. The first hot hydrogen gas obtained by heat treatment is output to the deoxygenator 130 for catalytic deoxygenation reaction to further obtain deoxygenated hydrogen gas.

[0086] When the gas output from the hydrogen-water separator does not meet the requirements, the first control valve 310 is used to disconnect the output of the hydrogen-water separator 120 from the input of the electric heater 110; the second control valve 320 is used to connect the output of the hydrogenation unit 200 to the input of the electric heater 110; the third control valve 510 is used to disconnect the output of the electric heater 110 from the input of the deoxygenator 130; and the fourth control valve 520 is used to connect the output of the electric heater 110 to the first input of the heat exchanger 210. When the gas output from the hydrogen-water separator does not meet the requirements, the electric heater 110 heat-treats the second hydrogen gas to be processed from the hydrogenation unit 200, and the resulting hot hydrogen gas is output to the heat exchanger 210. When the gas output from the hydrogen-water separator does not meet the requirements, the heater 110 heats the second hydrogen to be processed. This not only keeps the electric heater 110 in operation, solving the problem that the electric heater 110 may need to stop heating due to lack of processing medium, but also allows the electric heater 110 to run continuously, eliminating the time required for cold start-up preheating. Since the hydrogen entering the heat exchanger 210 in the hydrogenation unit 200 needs to undergo multi-stage preheating with the raw materials (such as mixed oil slurry of aromatic oil), the heat treatment of the second hydrogen to be processed in the hydrogenation unit 200 by the electric heater 110 can also reduce subsequent hydrogen preheating steps or reduce the amount of hydrogen that needs to be preheated, improve energy utilization, and ensure the safe and stable operation of the hydrogen production and hydrogenation process.

[0087] It should be noted that in other embodiments of this application, in addition to setting the output switching path 500 to include the aforementioned third control valve 510 and fourth control valve 520, the path switching component 300 can also be set to various types of switching modules such as single-pole double-throw switch, slide switch, and multi-mode selection switch. For details, please refer to the aforementioned path switching component 300; no limitation is made here.

[0088] like Figure 1 As shown, in one embodiment, the hydrogenation device 200 further includes a pretreatment device 220, the output of which is used to output a second hydrogen gas to be treated, and the output of which is connected to the first input terminal 2101 of the heat exchanger 210.

[0089] The pretreatment device 220 is used to pre-treat the hydrogen entering the hydrogenation unit 200 to ensure that it meets the conditions suitable for the hydrogenation reaction, thus enabling the subsequent hydrogenation process to proceed smoothly. The hydrogenation unit 200 has a first inlet 201 and a second inlet 202. The pretreatment device 220 may include, but is not limited to, a compressor 221. The compressor 221 compresses the pure hydrogen input through the first inlet 201 to increase its pressure, providing sufficient pressure conditions for subsequent mixing and hydrogenation reactions. The pretreatment device 220 may also be connected to a gas storage device, which is mainly used to store recycled hydrogen. The recycled hydrogen enters the hydrogenation unit 200 through the second inlet 202 and mixes with the compressed hydrogen to regulate the hydrogen pressure, making the pressure and temperature of the hydrogen participating in the hydrogenation reaction controllable.

[0090] like Figure 3 As shown in some embodiments of this application, the hydrogenation device 200 has an oil inlet 203 and further includes an oil slurry treatment flow path, a reaction heating furnace 230, and a hydrogenation reactor 240. The oil slurry treatment flow path is used to preheat the mixed oil slurry entering the hydrogenation device 200 through the oil inlet 203 in stages. The output end of the pretreatment device 220 is connected to the first input end 2101 of the heat exchanger 210 to output the second hydrogen to be treated to the heat exchanger 210. The first output end 2103 of the heat exchanger 210 is used to output the heat-exchanged hydrogen to the reaction heating furnace 230, and the second output end 2104 of the heat exchanger 210 is used to output the heat-exchanged high-pressure gas. The fuel gas inlet 2301 of the reaction heating furnace 230 is used to input fuel gas. The heat-exchanged hydrogen is mixed with the preheated mixed oil slurry and other materials, and then preheated in stages before entering the reaction heating furnace 230. The materials entering the reaction heating furnace 230 are heated and then output to the hydrogenation reactor 240. The recycled hydrogen can come from the hydrogenation reactor 240. The hydrogen output from the hydrogenation reactor 240 is recycled and used as recycled hydrogen, which can improve the utilization rate of hydrogen and the energy efficiency of the device.

[0091] like Figure 1 As shown, a fifth control valve 600 is provided between the output end of the pretreatment device 220 and the first input end 2101 of the heat exchanger 210. The fifth control valve 600 is used to control the connection between the pretreatment device 220 and the heat exchanger 210, or to control the disconnection between the pretreatment device 220 and the heat exchanger 210.

[0092] The second hydrogen gas to be processed output from the pretreatment unit can be output to the first input terminal 2101 of the heat exchanger 210, or to the input terminal of the electric heater 110. The first control valve 310 and the fifth control valve 600 are interlocked to control one of the two output paths of the pretreatment unit to be connected and the other to be disconnected according to the operating status of the upstream gas-liquid post-treatment unit; that is, the second control valve 320 is interlocked with the first control valve 310 and the fifth control valve 600. When the gas output from the hydrogen-water separator does not meet the requirements, the second control valve 320 closes and connects the output of the pretreatment device 220 to the input of the electric heater 110, the first control valve 310 closes and disconnects the output of the hydrogen-water separator 120 from the input of the electric heater 110, and the fifth control valve 600 closes and disconnects the output of the pretreatment device 220 from the first input 2101 of the heat exchanger 210. The electric heater 110 heat-treats the second hydrogen to be processed in the hydrogenation device 200, so that the electric heater 110 can run continuously and eliminates the time required for cold start preheating of the electric heater 110. When the gas output from the hydrogen-water separator meets the requirements, the second control valve 320 closes and disconnects the output of the pretreatment device 220 from the input of the electric heater 110, the first control valve 310 closes and connects the output of the hydrogen-water separator 120 to the input of the electric heater 110, and the fifth control valve 600 closes and connects the output of the pretreatment device 220 to the first input 2101 of the heat exchanger 210; the hydrogen production device 100 and the hydrogen refueling device 200 operate respectively.

[0093] It should be noted that in some other embodiments of this application, in addition to interlocking the second control valve 320 with the first control valve 310 and the fifth control valve 600, it is also possible to only interlock the first control valve 310 with the second control valve 320, and achieve this in the following manner:

[0094] When the gas output from the hydrogen-water separator does not meet the requirements, the second control valve 320 closes and the first control valve 310 opens. The electric heater 110 is used to heat-treat the second hydrogen gas to be treated. Under this condition, the fifth control valve 600 can be closed, and the output end of the pretreatment device 220 is disconnected from the first input end 2101 of the heat exchanger 210. The second hydrogen gas to be treated output by the pretreatment device 220 is not directly transferred to the heat exchanger 210. Alternatively, the fifth control valve 600 can be closed, and the output end of the pretreatment device 220 is connected to the first input end 2101 of the heat exchanger 210. When the gas output from the hydrogen-water separator does not meet the requirements, the second hydrogen gas to be treated is heat-treated by the electric heater 110. The flow path of the hydrogen addition device 200 itself remains connected, and the hydrogen addition reaction can still operate normally.

[0095] When the gas output from the hydrogen-water separator meets the requirements, the second control valve 320 is closed, the first control valve 310 is closed, and the fifth control valve 600 is closed, allowing the hydrogen production unit 100 and the hydrogen refueling unit 200 to operate separately when the gas output from the hydrogen-water separator meets the requirements; or, the second control valve 320 is closed, the first control valve 310 is closed, and the fifth control valve 600 is closed, allowing the hydrogen production unit 100 to operate without operating the hydrogen refueling unit 200, or only operating a portion of the hydrogen refueling unit 200's processes when the gas output from the hydrogen-water separator meets the requirements; the specific configuration can be determined according to actual conditions and is not limited here.

[0096] like Figure 1 As shown, in one embodiment, the deoxygenator 130 is used to deoxygenate the input hot hydrogen gas. The output end of the deoxygenator 130 is connected to the input end of the pretreatment device 220 and is used to output the deoxygenated hydrogen gas to the pretreatment device 220.

[0097] The deoxygenator 130 deoxygenates the input hydrogen, effectively removing oxygen and improving its purity. The high-purity hydrogen after deoxygenation enters the pretreatment unit 220, serving as feedstock for the hydrogenation unit 200, thus expanding the application scenarios of the hydrogen production unit 100. It also provides a more stable feedstock to the pretreatment unit 220, optimizing the operational stability of the hydrogenation unit 200 and reducing safety issues caused by unstable hydrogen purity. The high-purity hydrogen after deoxygenation primarily enters the compressor 221 of the pretreatment unit 220, preventing oxygen from damaging subsequent equipment and catalysts in the hydrogenation unit 200, extending equipment lifespan, and maintaining high reaction efficiency.

[0098] For example, the output end of the deoxygenator 130 is equipped with an adsorption drying device for adsorbing and drying the deoxygenated hydrogen. The deoxygenated hydrogen is then adsorbed and dried before being output to the pretreatment device 220, which can further optimize the stability and safety of the hydrogen refueling unit 200.

[0099] In addition, in other embodiments of this application, besides providing a flow path at the output end of the deoxidizer 130 to the pretreatment device 220 with deoxidized, adsorbed, and dried hydrogen (pure hydrogen), other one or more flow paths can also be provided at the output end of the deoxidizer 130 to utilize the produced hydrogen product. The hydrogen entering the pretreatment device 220 can be provided not only by the hydrogen production device 100 of this embodiment, but also by other gas storage devices or other hydrogen production processes; the specific configuration can be determined according to actual conditions and is not limited here.

[0100] like Figure 1As shown, in one embodiment, the second input terminal 2102 of the heat exchanger 210 is used to input hot high-pressure gas for heat exchange with the input hydrogen. The second input terminal 2102 of the heat exchanger 210 is provided with a flow valve 710, which is used to control the flow rate of the hot high-pressure gas input to the second input terminal 2102.

[0101] The second input terminal 2102 of the heat exchanger 210 serves as the hot high-pressure gas input terminal and can be connected to the hot high-pressure separation tank 250 to input hot high-pressure gas. The hot high-pressure gas acts as a heat source, transferring its heat to the hydrogen entering the heat exchanger 210, thus raising the hydrogen temperature and further controlling it. The flow of the hot high-pressure gas enhances the heat exchange effect and improves heat exchange efficiency. However, excessive hot high-pressure gas flow may lead to insufficient heat exchange and heat waste, while insufficient flow may prolong the heat exchange time. By controlling the opening of the second input terminal 2102 of the heat exchanger 210 through the flow valve 710, and further controlling the flow rate of the hot high-pressure gas input to the second input terminal 2102 of the heat exchanger 210, the temperature of the hydrogen entering the heat exchanger can be raised to the temperature required for the hydrogenation reaction, allowing the heat exchanger 210 to operate under optimal conditions, improving heat exchange efficiency, and optimizing the heat exchange effect.

[0102] In addition, such as Figure 3 As shown, the hydrogenation reactor 240 of the hydrogenation unit 200 can be connected to the hot high-efficiency separation tank 250 to output hot high-efficiency oil to the hot high-efficiency separation tank 250. A cooling device is connected between the hydrogenation unit 200 and the hot high-efficiency separation tank 250 to cool the hot high-efficiency oil. This allows for more efficient processing of reaction products, improves product quality and production efficiency, and reduces operating costs. Simultaneously, cooling the equipment also protects it and extends its service life.

[0103] like Figure 4 As shown, in one embodiment, the first input terminal 2101 of the heat exchanger 210 is provided with a temperature detection component 720, which is used to detect the flow temperature at the first input terminal 2101. The integrated hydrogen production and refueling device also includes a second controller 730, which is electrically connected to the temperature detection component 720 and the flow valve 710, respectively, and is used to control the operation of the flow valve 710 according to the flow temperature.

[0104] The temperature detection component 720 can be a temperature sensor such as a resistance temperature detector (RTD) or a thermocouple, or other device used for temperature detection. The temperature detection component 720 is used to output a temperature detection signal based on the temperature change of the cold stream input at the first input terminal 2101 of the heat exchanger 210. The second controller 730 can include a microprocessor, a single-chip microcomputer, etc. The second controller 730 is used to control the opening degree of the flow valve 710 based on the received temperature detection signal, so as to realize the automatic control of the hot high-pressure gas flow rate input at the second input terminal 2102 and optimize the heat exchange effect. Thus, when the flow temperature at the first input end 2101 of the heat exchanger 210 is high, the opening of the flow valve 710 at the second input end 2102 can be reduced to decrease the high-pressure flow rate entering the heat exchanger 210, thereby further reducing the heat in the heat exchanger 210 and reducing energy consumption; when the flow temperature at the first input end 2101 of the heat exchanger 210 is low, the opening of the flow valve 710 at the second input end 2102 can be increased to increase the high-pressure flow rate entering the heat exchanger 210, thereby further increasing the heat in the heat exchanger 210 and improving the heat exchange effect.

[0105] In addition, in other embodiments of this application, besides controlling the operation of the flow valve 710 according to the stream temperature at the first input terminal 2101 of the heat exchanger 210, the flow valve 710 can also be controlled according to the stream temperature at the first output terminal 2103 of the heat exchanger 210, the gas flow rate, etc.; this is not limited here.

[0106] The second controller 730 can be set up independently or integrated with the aforementioned first controller 420, and the same controller can be used to control the channel switching component 300 and the flow valve 710.

[0107] In addition, the first control valve 310, the second control valve 320, the third control valve 510, the fourth control valve 520, the fifth control valve 600, and the flow valve 710 mentioned above in this application can be controlled manually; or, the operation can be automated by controlling the operation through electrical control (such as a controller); or, some of the operation can be controlled manually, while the operation of other parts can be controlled by electrical control; the specific settings can be set according to actual conditions, and are not limited here.

[0108] like Figure 1As shown, in some specific embodiments, the electric heater 110 is normally open, and its operating temperature is determined based on the temperature required for the downstream catalyst to achieve optimal activity and the optimal operating temperature of the device. This operating temperature can be between 115°C and 125°C (e.g., 118°C, 120°C, 122°C). The hydrogen-water separation device 120 of the hydrogen production unit 100 is used to output the first hydrogen to be processed to the electric heater 110, where the electric heater 110 heats (i.e., heats) the input first hydrogen to be processed to obtain the first hot hydrogen. The hydrogen refueling unit 200 is coupled to the hydrogen production unit 100. The first input end 2101 of the heat exchanger 210 is used to input hydrogen, and the second input end 2102 of the heat exchanger 210 is used to input hot high-pressure gas for heat exchange with the input hydrogen. The raw material hydrogen (second hydrogen to be processed) obtained by the compressor 221 of the hydrogenation unit 200 is led to the electric heater 110 through an additional channel. The electric heater 110 heats the input second hydrogen to be processed and then transmits the heat-treated second hot hydrogen to the first input terminal 2101 of the heat exchanger 210 of the hydrogenation unit 200.

[0109] By adding a certain number of instruments (gas detection components 410, temperature detection components 720), control valves, flow valves 710, etc. to the relevant pipelines, and by setting interlocks between the control valves of the relevant pipelines (such as interlocking the second control valve 320 with the first control valve 310 and the fifth control valve 600, and interlocking the third control valve 510 with the fourth control valve 520), and by associating the temperature detection components 720 and the flow valves 710 with signals, and mainly based on the flow temperature detected by the thermocouple and other temperature detection components 720 located at the first input end 2101 of the heat exchanger 210, the opening of the flow valve 710 at the second input end 2102 of the heat exchanger 210 is controlled so that the hydrogen obtained after heat exchange can reach the temperature required for the reaction, which is between 197℃ and 205℃ (such as 201℃, 202℃, 203℃).

[0110] For example, an implementation example of this application is as follows:

[0111] In the hydrogenation unit 200, the raw material hydrogen (such as hydrogen obtained by deoxygenation treatment by deoxygenator 130, or hydrogen obtained after deoxygenation and adsorption drying treatment) enters the hydrogenation unit 200 and is compressed by the compressor 221 of the hydrogenation unit 200, which can raise the gas temperature. This part of the compressed hydrogen is mixed with the circulating hydrogen of the hydrogenation unit 200 to obtain the second hydrogen to be processed.

[0112] In some embodiments, after the raw material hydrogen is compressed by the compressor 221 of the hydrogenation device 200, the gas temperature rises from 40°C to 115°C. Since the temperature of the circulating hydrogen is generally between 72°C and 83°C (e.g., 77°C, 78°C, 80°C), this part of the compressed hydrogen is mixed with the circulating hydrogen to obtain a second hydrogen to be processed with a temperature between 75°C and 85°C (e.g., 78°C, 80°C, 82°C).

[0113] When the gas output from the hydrogen-water separator meets the requirements, the first control valve 310 closes and connects the output of the hydrogen-water separator 120 to the input of the electric heater 110; the second control valve 320 closes and disconnects the output of the pretreatment device 220 from the input of the electric heater 110; the third control valve 510 closes and connects the output of the electric heater 110 to the input of the deoxygenator 130; the fourth control valve 520 closes and disconnects the output of the electric heater 110 from the first input of the heat exchanger 210; and the fifth control valve 600 closes and connects the output of the pretreatment device 220 to the first input 2101 of the heat exchanger 210. The hydrogen production unit 100 and the hydrogen refueling unit 200 operate independently.

[0114] In some embodiments, the fifth control valve 600 closes and controls the output of the pretreatment device 220 to connect with the first input terminal 2101 of the heat exchanger 210, so that the raw material hydrogen (second hydrogen to be treated) of the hydrogenation device 200 is directly led to the first input terminal 2101 of the heat exchanger 210. When the temperature detection component 720 detects that the temperature of the cold flow stream input to the first input terminal 2101 of the heat exchanger 210 is between 75°C and 85°C (e.g., 78°C, 80°C, 82°C) or other preset temperature, the opening of the flow valve 710 is increased so that the heat exchanger 210 can input sufficient heat flow (hot high-pressure gas) to heat the raw material hydrogen, so that the hydrogen obtained after heat exchange through the heat exchanger 210 can reach the temperature required for the reaction, which is between 197°C and 205°C (e.g., 201°C, 202°C, 203°C). Meanwhile, since the deoxygenation electric heater 110 maintains an operating temperature between 115°C and 125°C (e.g., 118°C, 120°C, 122°C), the first hydrogen to be treated obtained from the upstream water electrolysis system gas-liquid post-treatment device (i.e., the first hydrogen to be treated obtained from the hydrogen-water separation device 120 after gas-liquid separation and hydrogen-water separation) can be directly heated to the required temperature, which is between 115°C and 125°C (e.g., 118°C, 120°C, 122°C), and then flows into the deoxygenator 130 for catalytic deoxygenation reaction.

[0115] When the gas output from the hydrogen-water separator does not meet the requirements, the electric heater 110 continues to operate normally. The first control valve 310 is closed and controls the output end of the hydrogen-water separator 120 to disconnect from the input end of the electric heater 110. The upstream device of the electric heater 110 continues to work, and the hydrogen-water separator 120 can be vented. The second control valve 320 is closed and controls the output end of the hydrogenation device 200 to connect with the input end of the electric heater 110. The third control valve 510 is closed and controls the output end of the electric heater 110 to disconnect from the input end of the deoxygenator 130. The fourth control valve 520 is closed and controls the output end of the electric heater 110 to connect with the first input end 2101 of the heat exchanger 210. The fifth control valve 600 is closed and controls the output end of the pretreatment device 220 to disconnect from the first input end 2101 of the heat exchanger 210.

[0116] In some embodiments, closing the first control valve 310, closing the second control valve 320, and closing the third control valve 510 allows the second hydrogen gas to be processed from the hydrogenation unit 200 to be led to the electric heater 110 for heating to a desired temperature, which is between 115°C and 125°C (e.g., 118°C, 120°C, 122°C). Simultaneously, closing the third control valve 510 and closing the fourth control valve 520 ensures that the second hot hydrogen gas obtained after heat treatment of the second hydrogen gas will not enter the downstream facilities of the purification unit, thus eliminating any impact on the downstream of the purification unit. When the fourth control valve 520 is closed, the second hot hydrogen gas heated to the required temperature is delivered to the first input terminal 2101 of the heat exchanger 210. When the temperature detection component 720 detects that the flow temperature of the stream at the first input terminal 2101 of the heat exchanger 210 is between 115°C and 125°C (e.g., 118°C, 120°C, 122°C) or other preset temperature, the opening of the flow valve 710 is reduced to reduce the flow rate of the heat flow, so that the hydrogen gas obtained after heat exchange through the heat exchanger 210 can reach the temperature required for the reaction, which is between 197°C and 205°C (e.g., 201°C, 202°C, 203°C).

[0117] Through the coupling of the above scheme, the hydrogen gas after the catalytic reaction in the deoxygenator 130 is processed by the adsorption drying separation facility to obtain high-purity green hydrogen (purity not less than 99.9%). Finally, this green hydrogen is output to the pretreatment device 220 (such as compressor 221) of the hydrogen refueling unit 200 and used as the raw material hydrogen for the hydrogen refueling unit 200, thereby realizing the coupling of traditional fossil energy and new energy devices.

[0118] The embodiments of this application couple the hydrogenation unit 200 and the hydrogen production unit 100. The green hydrogen produced by the hydrogen production unit 100 can be used as a raw material for the hydrogenation unit 200. Due to the very high purity of the green hydrogen, the activity time of the hydrogenation catalyst in the hydrogenation unit 200 can be greatly extended, reducing the operating cost and maintenance frequency of the original unit, thereby enriching the application scenarios of the water electrolysis system. Through the coupling of the hydrogenation unit 200 and the hydrogen production unit 100, the electric heater 110 can operate normally continuously, thus completely eliminating the time required for cold start preheating. Furthermore, the crude hydrogen (the first hydrogen to be treated) from the gas-liquid post-treatment unit can participate in the catalytic deoxygenation reaction in a timely and efficient manner, thereby saving electrical energy and collecting more product hydrogen, ultimately improving energy utilization and product yield.

[0119] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An integrated hydrogen production and hydrogenation device, characterized in that, include: Electric heater (110); Hydrogen-water separation unit (120) is used to output the first hydrogen gas to be processed; Hydrogenation unit (200) is used to output a second batch of hydrogen to be processed; A path switching component (300) has two input terminals connected to the hydrogen-water separation device (120) and the hydrogen addition device (200) respectively, and its output terminal is connected to the input terminal of the electric heater (110). The pathway switching component (300) is used to control the hydrogen-water separation device (120) to connect with the electric heater (110) so that the electric heater (110) heats the first hydrogen gas to be processed; or, to control the hydrogen addition device (200) to connect with the electric heater (110) so that the electric heater (110) heats the second hydrogen gas to be processed.

2. The integrated hydrogen production and hydrogenation device as described in claim 1, characterized in that, The integrated hydrogen production and hydrogen refueling device also includes an electrical control component (400), which is electrically connected to the channel switching component (300); The electronic control component (400) is used to detect the gas pressure and gas purity output by the hydrogen-water separation device (120), and to control the operation of the channel switching component (300) based on the detected gas pressure and gas purity.

3. The integrated hydrogen production and hydrogenation device as described in claim 2, characterized in that, The electronic control component (400) includes: A gas detection component (410) is connected to the output end of the hydrogen-water separation device (120) and is used to detect the gas pressure and gas purity output by the hydrogen-water separation device (120). A first controller (420) is electrically connected to the gas detection component (410) and the channel switching component (300), respectively, and is used to control the operation of the channel switching component (300) according to the detected gas pressure and gas purity.

4. The integrated hydrogen production and hydrogenation device as described in claim 1, characterized in that, The path switching assembly (300) includes a first control valve (310) and a second control valve (320); The first control valve (310) is located between the output end of the hydrogen-water separation device (120) and the input end of the electric heater (110), and the second control valve (320) is located between the output end of the hydrogenation device (200) and the input end of the electric heater (110). The first control valve (310) is used to control the connection between the hydrogen-water separation device (120) and the electric heater (110), and the second control valve (320) is used to control the disconnection between the hydrogenation device (200) and the electric heater (110); Alternatively, the first control valve (310) is used to control the hydrogen-water separation device (120) to disconnect from the electric heater (110), and the second control valve (320) is used to control the hydrogenation device (200) to connect to the electric heater (110).

5. The integrated hydrogen production and hydrogenation apparatus as described in any one of claims 1 to 4, characterized in that, The hydrogen refueling device (200) includes a heat exchanger (210), and the integrated hydrogen production and hydrogen refueling device also includes a deoxygenator (130) and an output switching passage (500). The input end of the output switching path (500) is connected to the output end of the electric heater (110), and the two output ends of the output switching path (500) are respectively connected to the first input end (2101) of the heat exchanger (210) and the input end of the deaerator (130). The output end of the electric heater (110) is used to output heat-treated hot hydrogen gas. The output switching passage (500) is used to control the electric heater (110) to connect with the deoxygenator (130) so that the electric heater (110) outputs the hot hydrogen gas to the deoxygenator (130); or, to control the electric heater (110) to connect with the heat exchanger (210) so that the electric heater (110) outputs the hot hydrogen gas to the heat exchanger (210).

6. The integrated hydrogen production and hydrogenation device as described in claim 5, characterized in that, The output switching path (500) includes a third control valve (510) and a fourth control valve (520). The third control valve (510) is located between the output end of the electric heater (110) and the input end of the deaerator (130), and the fourth control valve (520) is located between the output end of the electric heater (110) and the first input end (2101) of the heat exchanger (210). The third control valve (510) is used to control the connection between the electric heater (110) and the deaerator (130), and the fourth control valve (520) is used to control the connection between the electric heater (110) and the heat exchanger (210). Alternatively, the third control valve (510) is used to control the electric heater (110) to disconnect from the deaerator (130), and the fourth control valve (520) is used to control the electric heater (110) to connect to the heat exchanger (210).

7. The integrated hydrogen production and hydrogenation device as described in claim 5, characterized in that, The hydrogenation device (200) further includes a pretreatment device (220), the output end of which is used to output the second hydrogen to be treated, and the output end of the pretreatment device (220) is connected to the first input end (2101) of the heat exchanger (210). A fifth control valve (600) is provided between the output end of the pretreatment device (220) and the first input end (2101) of the heat exchanger (210); the fifth control valve (600) is used to control the pretreatment device (220) to connect with the heat exchanger (210), or to control the pretreatment device (220) to disconnect from the heat exchanger (210).

8. The integrated hydrogen production and hydrogenation apparatus as described in claim 7, characterized in that, The deoxygenator (130) is used to deoxygenate the input hot hydrogen gas. The output end of the deoxygenator (130) is connected to the input end of the pretreatment device (220) and is used to output the deoxygenated hydrogen gas to the pretreatment device (220).

9. The integrated hydrogen production and hydrogenation device as described in claim 5, characterized in that, The second input terminal (2102) of the heat exchanger (210) is used to input hot high-pressure gas for heat exchange with the input hydrogen gas through the hot high-pressure gas; The heat exchanger (210) has a flow valve (710) at its second input end (2102), which is used to control the flow rate of the hot high-pressure gas input to the second input end (2102).

10. The integrated hydrogen production and hydrogenation apparatus as described in claim 9, characterized in that, The heat exchanger (210) has a temperature detection component (720) at its first input terminal (2101), which is used to detect the flow temperature at the first input terminal (2101). The hydrogen production and hydrogen refueling integrated device also includes a second controller (730), which is electrically connected to the temperature detection component (720) and the flow valve (710) respectively, and is used to control the operation of the flow valve (710) according to the flow temperature.

Images