Hydrogen supply system with buffering function and hydrogen using equipment

Abstract

The utility model discloses a hydrogen supply system with a buffering function and hydrogen using equipment. The hydrogen supply system with the buffering function comprises a reaction chamber, a material storage box, a purification device and a buffering device. And the reaction chamber is used for reforming hydrogen production or organic liquid hydrogen storage and desorption reaction. And the storage material box is connected with the reaction chamber and is used for storing fuel for hydrogen production by reforming or reactants for organic liquid hydrogen storage. The purification device is connected with the reaction chamber and is used for purifying the hydrogen from the reaction chamber. The buffer device is connected with the purification device. And the buffer device and the purification device are also used for connecting the dye cell for supplying hydrogen to the buffer device. And the buffer device is used for storing a solid hydrogen storage material so as to store and buffer the purified hydrogen. According to the hydrogen supply system with the buffering function, the buffering device is adopted for solid hydrogen storage, the volume hydrogen storage density ranges from 90 g / L to 100 g / L, extra accessory power consumption is not needed, and the volume hydrogen storage density of the buffering device is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy, in particular to a hydrogen supply system with a buffering function and a hydrogen equipment. BACKGROUND

[0002] A hydrogen-oxygen fuel cell uses hydrogen as fuel and oxygen as oxidant, and directly converts the chemical energy of the fuel into electrical energy through an electrochemical reaction. The hydrogen-oxygen fuel cell is not limited by the Carnot cycle, has a high energy conversion efficiency, and has only water as a reaction product, and thus has green and efficient characteristics. The fuel cell is suitable for use as a power system for a UUV (underwater unmanned vehicle) or the like. Compared with a lithium electric power system, the hydrogen-oxygen fuel cell has the advantages of high power density, long cruising range, and light weight. Compared with a gas engine power system, the hydrogen-oxygen fuel cell has the advantages of small vibration and noise, and almost no tail exhaust.

[0003] At present, the hydrogen supply mode for a fuel cell is mainly a simple hydrogen storage cylinder. However, the larger the pressure and volume of the hydrogen storage cylinder, the higher the safety risk level. In addition, methanol reforming and organic liquid hydrogen storage can also be used to supply hydrogen to the fuel cell. However, such a hydrogen supply device that generates hydrogen through a chemical reaction inevitably has a hysteresis. When the working condition of the fuel cell changes or the fuel cell is started or stopped, there is a problem of delayed response. CONTENT OF THE INVENTION

[0004] Therefore, it is necessary to provide a hydrogen supply system with a buffering function. The hydrogen supply system with a buffering function can reduce the volume of a hydrogen production system and improve the hydrogen storage density.

[0005] An embodiment of the present application provides a hydrogen supply system with a buffering function.

[0006] A hydrogen supply system with a buffering function comprises:

[0007] A reaction chamber for generating a hydrogen production reaction or an organic liquid hydrogen storage hydrogen release reaction;

[0008] A storage tank connected to the reaction chamber, the storage tank being used to store fuel for the hydrogen production reaction or a reactant for the organic liquid hydrogen storage hydrogen release reaction;

[0009] A purification device connected to the reaction chamber and used to purify hydrogen from the reaction chamber; and

[0010] A buffering device connected to the purification device, the buffering device and the purification device being further used to connect a fuel cell to supply hydrogen to the buffering device, and the buffering device being used to store a solid hydrogen storage material to store and buffer the purified hydrogen.

[0011] In some embodiments, the storage tank stores one or more of ethanol, propane and diesel, and the reaction chamber is provided with a catalyst for catalytic reforming reaction, which includes one or more of palladium-carbon catalyst, copper-based catalyst.

[0012] In some embodiments, the storage tank stores aqueous methanol solution, and the reaction chamber is provided with a reforming catalyst for catalytic reforming reaction, which includes one or more of palladium-carbon catalyst, copper-based catalyst, platinum group metal catalyst, nickel-based catalyst.

[0013] In some embodiments, the aqueous methanol solution has a mass concentration of 50wt% to 70wt%.

[0014] In some embodiments, the storage tank includes a water storage container, a methanol storage container, a mixer and a mixed container, and the water storage container and the methanol storage container are connected to the mixer and the mixed container.

[0015] In some embodiments, a mixing pump is arranged between the water storage container and the mixer and / or between the methanol storage container and the mixer.

[0016] In some embodiments, the water storage container is further connected to a hydrogen using device to collect water generated from the hydrogen using device.

[0017] In some embodiments, the purification device is provided with one or both of palladium membrane purification and PSA purification to purify hydrogen generated from the reaction chamber.

[0018] In some embodiments, the storage tank stores one or more of benzene, toluene, xylene, carbazole and nitrogen ethyl carbazole, and the reaction chamber is provided with a hydrogen storage catalyst for catalytic organic liquid hydrogen storage, which includes palladium-platinum-based catalyst, nickel-based catalyst.

[0019] In some embodiments, the purification device includes a gas-liquid separator for separating organic liquid hydrogen storage product and hydrogen gas.

[0020] The gas-liquid separator is further connected to a waste container for collecting organic liquid hydrogen storage product after gas-liquid separation.

[0021] An embodiment of the present application provides a hydrogen using device.

[0022] A hydrogen using device, which includes the hydrogen supply system with buffering function as described above, and the hydrogen using device is a PEM fuel cell, a solid oxide fuel cell, a hydrogen internal combustion engine, a hydrogen catalytic combustion device, a hydrogen reduction furnace, a hydrogen-oxygen decarbonization machine.

[0023] The hydrogen supply system with buffering function of the application adopts a buffering device to store hydrogen in solid state, realizes a volume hydrogen storage density of 90g / L-100g / L, and does not need additional accessory power consumption, thereby greatly reducing the volume hydrogen storage density of the buffering device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description only some embodiments of the application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0025] In order to more completely understand the application and its beneficial effects, the following will be described in conjunction with the drawings. In the following description, the same reference numbers represent the same parts.

[0026] Figure 1 The schematic diagram of the hydrogen supply system with buffering function of the application embodiment 1 and 2 is shown in the figure.

[0027] Figure 2 The schematic diagram of the hydrogen supply system with buffering function of the application embodiment 3 is shown in the figure.

[0028] Figure 3 The schematic diagram of the hydrogen supply system with buffering function of the application embodiment 4 is shown in the figure.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 10, hydrogen supply system with buffering function; 100, reaction chamber; 200, storage tank; 201, water storage container; 202, methanol storage container; 203, mixer; 204, mixed material container; 205, mixing pump; 300, purification device; 301, gas-liquid separator; 302, waste container; 303, waste pump; 400, buffering device; 500, driving pump; 600, backflow pump; 20, hydrogen equipment. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the application more apparent and easy to understand, the specific embodiments of the application will be described in detail below in conjunction with the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the application. However, the application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the application, therefore the application is not limited by the following disclosed specific embodiments.

[0032] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of the utility model, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first and second are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0036] In the present document, "optionally", "optional" or "option" means optional, i.e. selected from either of the two parallel options "with" or "without". If there are multiple "optionally" in a technical solution, each "optionally" is independent of each other unless otherwise specified, and there is no contradiction or mutual restriction. In the present application, "optionally contains" and the like mean "contains or does not contain".

[0037] In the present application, the sum of the parts of each component in the composition can be 100 parts by weight unless otherwise specified. If not specifically indicated, the basis of the percentage (including weight percentage) of the present application is the total weight of the composition. In addition, "wt%" in the present document means mass percentage, and "at%" means atomic percentage.

[0038] In the present application, when a numerical interval (i.e. a numerical range) is involved, the distribution of the optional values in the numerical interval is considered to be continuous and includes the two numerical endpoints (i.e. the minimum value and the maximum value) of the numerical interval and every value between the two numerical endpoints, unless otherwise specified. When the numerical interval only refers to the integers in the numerical interval, including the two endpoint integers of the numerical range and every integer between the two endpoints, it is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe a feature or characteristic, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical range disclosed in the present application should be understood to include any and all sub-ranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" allows a broad definition of quantitative intervals, such as percentage intervals, ratio intervals, and value intervals.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] The embodiment of the present application provides a hydrogen supply system with a buffering function to solve at least one of the following technical problems existing in the existing fuel cell hydrogen supply mode: (1) the larger the pressure and volume specification of the hydrogen storage bottle, the higher the safety risk level; (2) methanol reforming and organic liquid hydrogen storage for fuel cell hydrogen supply inevitably have hysteresis, and there is a problem of untimely response when the fuel cell working condition changes or starts and stops. The hydrogen supply system with a buffering function will be described below with reference to the accompanying drawings.

[0041] The hydrogen supply system with buffering function provided by the embodiments of the present application, for example, refer to Figure 1 as shown in the drawings, Figure 1 The structure schematic diagram of the hydrogen supply system with buffering function provided by the embodiments of the present application. The hydrogen supply system with buffering function provided by the embodiments of the present application can be used for hydrogen supply for fuel cells.

[0042] In order to more clearly illustrate the structure of the hydrogen supply system with buffering function, the hydrogen supply system with buffering function will be introduced below in combination with the drawings.

[0043] The hydrogen supply system with buffering function, for example, refer to Figure 1 as shown in the drawings, a hydrogen supply system with buffering function, comprising a reaction chamber 100, a storage tank 200, a purification device 300 and a buffering device 400.

[0044] The reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage hydrogen release reaction. The storage tank 200 is connected with the reaction chamber 100, and the storage tank 200 is used for storing the fuel for reforming hydrogen production or the reactant of organic liquid hydrogen storage. The purification device 300 is connected with the reaction chamber 100 for purifying hydrogen from the reaction chamber 100. The buffering device 400 is connected with the purification device 300. The buffering device 400 and the purification device 300 are also used for connecting the dye cell for supplying hydrogen to the buffering device 400. The buffering device 400 is used for storing solid hydrogen storage material for storing and buffering the purified hydrogen.

[0045] In some embodiments, the buffering device 400 of the present application adopts a solid hydrogen buffer tank.

[0046] The conventional buffer tank in the prior art adopts gaseous hydrogen for buffering. Based on the consideration of system pressure resistance not being too high and being not conducive to hydrogen release reaction, the internal pressure of the buffering device 400 in the present application is 200kPa~400kPa, at this time, the volume hydrogen storage density of the buffering device 400 is generally about 0.3g / L, and the volume hydrogen storage density of the solid hydrogen storage system is 50g / L~100g / L. For storing the same mass of hydrogen, the volume of the solid hydrogen storage system of the present application is two orders of magnitude smaller than that of the gaseous hydrogen buffer tank in the conventional technology. The buffering device 400 adopted by the present application can reduce the system volume.

[0047] In some embodiments, referring to Figure 1 as shown in the drawings, the storage tank 200 stores one or more liquid fuels including ethanol, propane and diesel. The reaction chamber 100 is fixed with a catalyst for catalytic reforming reaction, and the reforming catalyst includes one or more of palladium-carbon catalyst and copper-based catalyst.

[0048] In some embodiments, the storage tank 200 contains an aqueous methanol solution. The reaction chamber 100 contains a reforming catalyst for catalytic reforming, which includes one or more of palladium-on-carbon catalysts, copper-based catalysts, platinum group metal catalysts, and nickel-based catalysts.

[0049] In some embodiments, the mass concentration of the methanol aqueous solution is 50 wt% to 70 wt%. The mass concentration of the methanol aqueous solution includes, but is not limited to, 50 wt%, 55 wt%, 60 wt%, 65 wt%, 70 wt%, or any range between the foregoing.

[0050] In some of these embodiments, see Figure 2 As shown, the storage tank 200 includes a water storage container 201, a methanol storage container 202, a mixer 203, and a mixing container 204. The water storage container 201 and the methanol storage container 202 are connected to the mixing container 204 via the mixer 203.

[0051] In some embodiments, a mixing pump 205 is provided between the water storage container 201 and the mixer 203 and / or between the methanol storage container 202 and the mixer 203. Preferably, see Figure 2 As shown, a mixing pump 205 is installed between the water storage container 201 and the mixer 203, and between the methanol storage container 202 and the mixer 203.

[0052] In some of these embodiments, see Figure 2 As shown, the water storage container 201 is also connected to the hydrogen-using device 20 to collect water generated from the hydrogen-using device 20.

[0053] In some embodiments, the purification device 300 is equipped with one or both of palladium membrane purification and PSA purification to purify the hydrogen produced from the water in the reaction chamber 100. The purification device 300 is used to purify the generated hydrogen, reduce the content of impurity gases, and then connect it to the main pipeline.

[0054] It should be noted that palladium membrane purification is a technology that utilizes the selective permeability of palladium metal to hydrogen to achieve gas separation and purification. Palladium and its alloys allow hydrogen molecules to pass through in atomic form while blocking most other gases (including oxygen, nitrogen, carbon monoxide, etc.), thereby achieving the goal of extracting high-purity hydrogen from a gas mixture. This technology is widely used in the chemical, electronics, and energy industries, especially in fuel cell hydrogen supply systems. The working principle of a palladium membrane is as follows: Utilizing the selective permeability of the palladium membrane to hydrogen, at a certain temperature, hydrogen dissociates into hydrogen atoms on one side of the palladium membrane, then dissolves in the palladium and diffuses to the other side. Finally, it recombines into hydrogen molecules on the other side of the palladium membrane and escapes, thus achieving hydrogen purification.

[0055] PSA purification, or Pressure Swing Adsorption, is a widely used technique for gas separation and purification, particularly suitable for extracting specific components such as hydrogen, nitrogen, or oxygen from a mixture. The PSA process relies on the selective adsorption properties of the adsorbent material, which adsorbs and desorbs target gases under different pressure conditions, allowing for gas separation. The working principle of PSA purification is as follows: (1) High-pressure adsorption stage: At a higher pressure, the raw gas passes through an adsorption tower containing a selective adsorbent. During this process, the adsorbent selectively adsorbs certain components (usually impurities) in the mixed gas, while allowing the target gas (such as hydrogen) to pass through. (2) Low-pressure desorption stage: When the adsorbent approaches saturation, it is switched to a low-pressure or vacuum state, causing the previously adsorbed components to desorb from the adsorbent and be discharged outside the system. At this time, the adsorbent returns to its initial state, preparing for the next cycle. (3) Cycle operation: Typically, a PSA device contains at least two or more adsorption towers that alternately perform adsorption-regeneration processes to ensure continuous production of target gas.

[0056] In some embodiments, referring to FIG. 1, the storage tank 200 stores organic liquid hydrogen storage materials including one or more of benzene, toluene, xylene, carbazole, and nitrogen ethyl carbazole, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, which includes a palladium platinum-based catalyst and a nickel-based catalyst. Figure 3 The working principle of organic liquid hydrogen storage is as follows: (1) Hydrogenation process: Under certain conditions (usually high temperature and high pressure), hydrogen is added to the selected organic carrier to form a hydrogen-rich compound. This process is called "hydrogenation" or "hydrogenation". (2) Dehydrogenation process: When hydrogen is needed, the hydrogen-rich material releases hydrogen through a catalytic reaction, while restoring the original organic carrier. This process is called "dehydrogenation" or "dehydrogenation".

[0057] In some embodiments, referring to FIG. 1, the storage tank 200 stores organic liquid hydrogen storage materials including one or more of benzene, toluene, xylene, carbazole, and nitrogen ethyl carbazole, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, which includes a palladium platinum-based catalyst and a nickel-based catalyst. Figure 3 In some embodiments, referring to FIG. 1, the storage tank 200 stores organic liquid hydrogen storage materials including one or more of benzene, toluene, xylene, carbazole, and nitrogen ethyl carbazole, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, which includes a palladium platinum-based catalyst and a nickel-based catalyst.

[0058] In some embodiments, referring to FIG. 1, the storage tank 200 stores organic liquid hydrogen storage materials including one or more of benzene, toluene, xylene, carbazole, and nitrogen ethyl carbazole, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, which includes a palladium platinum-based catalyst and a nickel-based catalyst. Figure 3As shown, the gas-liquid separator 301 is also connected with a waste container 302 for collecting the organic liquid hydrogen storage product after gas-liquid separation. A waste pump 303 is arranged on the pipeline between the gas-liquid separator 301 and the waste container 302.

[0059] In some embodiments, the buffer device 400 contains solid-state hydrogen storage alloys, such as lanthanum-nickel series, iron-titanium series, magnesium hydride, etc. The main features of solid-state hydrogen storage alloys include: (1) high energy density: compared with high-pressure gaseous and low-temperature liquid hydrogen storage, solid-state hydrogen storage alloys can provide higher mass energy density, which means that more hydrogen can be stored under the same weight. (2) Safety: Since hydrogen is chemically combined in the alloy, the risk of leakage is low under normal operating conditions, and it is more secure than high-pressure gas hydrogen storage. (3) Controllability: The absorption and release of hydrogen can be controlled by adjusting the temperature and pressure, which makes the hydrogen storage process easier to manage and adjust. (4) Cycle life: Some high-quality hydrogen storage alloys have good cycle stability and can perform thousands of hydrogen absorption and release cycles without significant performance degradation. (5) Environmental adaptability: Certain hydrogen storage alloys can work in a wide temperature range, suitable for different climate conditions.

[0060] In some embodiments, the solid-state hydrogen storage alloy includes: rare earth series hydrogen storage alloy (such as LaNi5): These alloys usually contain lanthanum series elements and have good hydrogen absorption and release performance. Magnesium-based hydrogen storage alloy (such as MgH2): Magnesium and its compounds are of interest due to their high theoretical hydrogen storage capacity, but have problems such as activation difficulty in practical application. Titanium series hydrogen storage alloy (such as TiFe): This type of alloy has relatively low cost, but may need pretreatment to improve its hydrogen absorption capacity. Zirconium series hydrogen storage alloy (such as ZrV2): These alloys have good kinetic performance and are suitable for rapid hydrogen charging and discharging.

[0061] In some embodiments, a driving pump 500 is arranged between the reaction chamber 100 and the storage tank 200.

[0062] An embodiment of the present application provides a hydrogen-using equipment 20.

[0063] A hydrogen-using equipment 20, the hydrogen-using equipment 20 comprising the hydrogen supply system with a buffer function described above, the hydrogen-using equipment 20 being a PEM fuel cell (Proton Exchange Membrane Fuel Cell, PEMFC), a solid oxide fuel cell, a hydrogen internal combustion engine, a hydrogen catalytic combustion device, a hydrogen reduction furnace, a hydrogen-oxygen decarburization machine.

[0064] Embodiment 1

[0065] A hydrogen supply system with a buffer function, comprising a reaction chamber 100, a storage tank 200, a purification device 300, and a buffer device 400.

[0066] Referring to Figure 1 As shown, the reaction chamber 100 is used for hydrogen production by reforming or hydrogen release from organic liquid hydrogen storage. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is arranged between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used for storing fuel for hydrogen production by reforming or reactant for hydrogen release from organic liquid hydrogen storage. The purification device 300 is connected to the reaction chamber 100 for purifying hydrogen from the reaction chamber 100. The buffer device 400 is connected to the purification device 300. The buffer device 400 and the purification device 300 are also used for connecting to a dye cell for supplying hydrogen to the buffer device 400. The buffer device 400 is used for storing solid hydrogen storage material for storing and buffering purified hydrogen.

[0067] Referring to Figure 1 As shown, the storage tank 200 stores liquid fuel including ethanol and propane. The reaction chamber 100 is fixed with a catalyst for catalytic reforming reaction, and the reforming catalyst includes palladium-carbon catalyst and copper-based catalyst.

[0068] The purification device 300 is provided with a palladium membrane for purifying hydrogen produced by the reaction chamber 100. The purification device 300 is used for purifying produced hydrogen, reducing the content of impurity gas, and then merging into a main pipeline.

[0069] The buffer device 400 contains solid hydrogen storage alloy, and rare earth hydrogen storage alloy LaNi5.

[0070] Example 2

[0071] A hydrogen supply system with a buffering function includes a reaction chamber 100, a storage tank 200, a purification device 300, and a buffer device 400.

[0072] Referring to Figure 1 As shown, the reaction chamber 100 is used for hydrogen production by reforming or hydrogen release from organic liquid hydrogen storage. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is arranged between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used for storing fuel for hydrogen production by reforming or reactant for hydrogen release from organic liquid hydrogen storage. The purification device 300 is connected to the reaction chamber 100 for purifying hydrogen from the reaction chamber 100. The buffer device 400 is connected to the purification device 300. The buffer device 400 and the purification device 300 are also used for connecting to a dye cell for supplying hydrogen to the buffer device 400. The buffer device 400 is used for storing solid hydrogen storage material for storing and buffering purified hydrogen.

[0073] Referring to Figure 1As shown, in some embodiments, the storage tank 200 stores methanol aqueous solution. The reforming catalyst for catalytic reforming reaction is fixed in the reaction chamber 100, and the reforming catalyst includes palladium-carbon catalyst.

[0074] The mass concentration of the methanol aqueous solution is 60wt%.

[0075] The purification device 300 is provided with palladium membrane purification and PSA purification to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the produced hydrogen, reduce the content of impurity gas, and then flow into the main pipeline.

[0076] The buffer device 400 contains solid-state hydrogen storage alloy, magnesium-based hydrogen storage alloy MgH2.

[0077] Embodiment 3

[0078] A hydrogen supply system with a buffer function, including a reaction chamber 100, a storage tank 200, a purification device 300, and a buffer device 400.

[0079] Referring to Figure 2 As shown, the reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage hydrogen release reaction. The storage tank 200 is connected with the reaction chamber 100, and the driving pump 500 is arranged between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store the fuel for reforming hydrogen production or the reactant of organic liquid hydrogen storage. The purification device 300 is connected with the reaction chamber 100 for purifying the hydrogen from the reaction chamber 100. The buffer device 400 is connected with the purification device 300. The buffer device 400 and the purification device 300 are also used to connect the dye cell for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid-state hydrogen storage material for storing and buffering the purified hydrogen.

[0080] Referring to Figure 2 As shown, the storage tank 200 includes a water storage container 201, a methanol storage container 202, a mixer 203, and a mixed material container 204. The water storage container 201 and the methanol storage container 202 are connected with the mixed material container 204 through the mixer 203.

[0081] Referring to Figure 2 As shown, the mixing pump 205 is arranged between the water storage container 201 and the mixer 203 and / or between the methanol storage container 202 and the mixer 203.

[0082] Referring to Figure 2 As shown, the water storage container 201 is also connected with the hydrogen-consuming equipment 20 to collect the water produced by the hydrogen-consuming equipment 20.

[0083] Referring to Figure 2As shown, a backflow pump 600 is arranged between the water storage container 201 and the hydrogen using device 20.

[0084] A palladium membrane purification is arranged in the purification device 300 to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the produced hydrogen, reduce the content of impurity gas, and then flow into the main pipeline.

[0085] The buffer device 400 contains solid-state hydrogen storage alloy, titanium-based hydrogen storage alloy TiFe.

[0086] Example 4

[0087] A hydrogen supply system with a buffer function, comprising a reaction chamber 100, a storage tank 200, a purification device 300, and a buffer device 400.

[0088] Referring to Figure 3 As shown, the reaction chamber 100 is used for hydrogen production by reforming or hydrogen release reaction of organic liquid hydrogen storage. The storage tank 200 is connected to the reaction chamber 100, and a drive pump 500 is arranged between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store fuel for hydrogen production by reforming or reactants for organic liquid hydrogen storage. The purification device 300 is connected to the reaction chamber 100 for purifying hydrogen from the reaction chamber 100. The buffer device 400 is connected to the purification device 300. The buffer device 400 and the purification device 300 are also used to connect to a dye cell for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid-state hydrogen storage materials for storing and buffering purified hydrogen.

[0089] Referring to Figure 3 As shown, the storage tank 200 stores organic liquid hydrogen storage materials including benzene and toluene, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, which includes palladium platinum-based catalyst and nickel-based catalyst. The purification device 300 includes a gas-liquid separator 301 for separating organic liquid hydrogen storage products and hydrogen. The gas-liquid separator 301 is also connected to a waste container 302 for collecting organic liquid hydrogen storage products after gas-liquid separation.

[0090] A palladium membrane purification and a PSA purification are arranged in the purification device 300 to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the produced hydrogen, reduce the content of impurity gas, and then flow into the main pipeline.

[0091] The buffer device 400 contains solid-state hydrogen storage alloy: zirconium-based hydrogen storage alloy ZrV2.

[0092] In summary, the hydrogen supply system with buffering function has the buffering device 400 to store hydrogen in solid state, realizes the volume hydrogen storage density between 90g / L and 100g / L, does not need extra accessory power consumption, and greatly reduces the volume hydrogen storage density of the buffering device 400.

[0093] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0094] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0095] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A hydrogen supply system with buffering function, characterized in that, The system comprises: a reaction chamber for hydrogen production by reforming or organic liquid hydrogen storage; a storage tank connected to the reaction chamber for storing fuel for hydrogen production by reforming or reactants for organic liquid hydrogen storage; a purification device connected to the reaction chamber for purifying hydrogen from the reaction chamber; and a buffer device connected to the purification device for storing solid hydrogen storage material to store and buffer purified hydrogen, and connected to a dye cell for supplying hydrogen to the buffer device. The storage tank stores one or more of ethanol, propane and diesel, and the reaction chamber is provided with one or more of a palladium-carbon catalyst, a copper-based catalyst for catalytic reforming reaction.

2. The hydrogen supply system having a buffer function according to claim 1, characterized by, The storage tank stores aqueous methanol solution, and the reaction chamber is provided with one or more of a palladium-carbon catalyst, a copper-based catalyst, a platinum group metal catalyst, a nickel-based catalyst for catalytic reforming reaction.

3. The hydrogen supply system having a buffer function according to claim 1, characterized by, The aqueous methanol solution has a mass concentration of 50wt%-70wt%.

4. The hydrogen supply system having a buffer function according to claim 3, characterized by, The storage tank comprises a water storage container, a methanol storage container, a mixer and a mixed container, and the water storage container and the methanol storage container are connected to the mixer and the mixed container.

5. The hydrogen supply system having a buffer function according to any one of claims 3 to 4, characterized by, The hydrogen supply system with a buffer function further satisfies at least one of the following conditions:

6. The hydrogen supply system having a buffer function according to claim 5, wherein (1) a mixing pump is arranged between the water storage container and the mixer and / or between the methanol storage container and the mixer; (2) the water storage container is further connected to a hydrogen-consuming device to collect water produced by the hydrogen-consuming device. The purification device is provided with one or both of a palladium membrane purification device and a PSA purification device to purify hydrogen produced by the reaction chamber.

7. The hydrogen supply system having a buffer function according to any one of claims 2 to 4 and 6, characterized by The storage tank stores one or more of benzene, toluene, xylene, carbazole and nitrogen ethyl carbazole as organic liquid hydrogen storage material, and the reaction chamber is provided with a hydrogen storage catalyst for catalytic organic liquid hydrogen storage, which comprises a palladium-platinum-based catalyst and a nickel-based catalyst.

8. The hydrogen supply system having a buffer function according to claim 7, wherein The purification device comprises a gas-liquid separator for separating organic liquid hydrogen storage products and hydrogen; 9. The hydrogen supply system having a buffer function according to claim 8, wherein The gas-liquid separator is further connected to a waste container for collecting organic liquid hydrogen storage products after gas-liquid separation. The hydrogen-consuming device comprises the hydrogen supply system with a buffer function according to any one of claims 1-9, and the hydrogen-consuming device is a PEM fuel cell, a solid oxide fuel cell, a hydrogen internal combustion engine, a hydrogen catalytic combustion device, a hydrogen reduction furnace or a hydrogen-oxygen carbon removal machine.

10. A hydrogen using apparatus characterized by comprising: ​

Images