Hydrogen supply system with buffering function and hydrogen using equipment

Abstract

The invention 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 field of energy technology, and in particular to a hydrogen supply system and hydrogen-using equipment with a buffering function. Background Art

[0002] Hydrogen-oxygen fuel cells use hydrogen as fuel and oxygen as oxidant. They directly convert the chemical energy of the fuel into electrical energy through electrochemical reactions. They are not limited by the Carnot cycle, have high energy conversion efficiency, and their reaction product is only water, which is green and efficient. Fuel cells are suitable as power systems for equipment such as UUVs (underwater unmanned vehicles). Compared with lithium-ion power systems, hydrogen-oxygen fuel cells have the advantages of high power density, long cruising range, and light weight. Compared with gas engine power systems, they have the advantages of low vibration and noise and almost no tail exhaust.

[0003] At present, most fuel cell hydrogen supply methods are based on simple hydrogen storage bottles. However, the larger the pressure and volume of the hydrogen storage bottle, the higher the safety risk level. In addition, methanol reforming and organic liquid hydrogen storage can also be used to supply hydrogen to fuel cells. However, such devices that produce hydrogen through chemical reactions inevitably have lags, and when the fuel cell changes load or is turned on and off, there will be problems with untimely response. Summary of the invention

[0004] Based on this, it is necessary to provide a hydrogen supply system with a buffer function. The hydrogen supply system with a buffer function of the present invention can reduce the volume of the hydrogen production system and increase its 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, comprising:

[0007] A reaction chamber, wherein the reaction chamber is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction;

[0008] A storage tank, the storage tank is connected to the reaction chamber, and the storage tank is used to store fuel for reforming to produce hydrogen, or reactants for organic liquid hydrogen storage;

[0009] a purification device connected to the reaction chamber for purifying hydrogen from the reaction chamber; and

[0010] A buffer device is connected to the purification device. The buffer device and the purification device are also used to connect to a dye battery for supplying hydrogen to the buffer device. The buffer device is used to store solid hydrogen storage materials for storage and buffering of purified hydrogen.

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

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

[0013] In some of the embodiments, the mass concentration of the methanol aqueous solution is 50wt%~70wt%.

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

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

[0016] In some of the embodiments, the water storage container is also connected to a hydrogen-using device to collect water generated by the hydrogen-using device.

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

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

[0019] In some embodiments, the purification device includes a gas-liquid separator, which is used to separate the organic liquid hydrogen storage product from hydrogen;

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

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

[0022] A hydrogen-using device, comprising the above-mentioned hydrogen supply system with buffering function, wherein 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, and a hydrogen-oxygen carbon removal machine.

[0023] The hydrogen supply system with buffering function of the present application adopts a buffer device for solid-state hydrogen storage, achieving a volume hydrogen storage density between 90g / L and 100g / L, without requiring additional accessory power consumption, thereby greatly reducing the volume hydrogen storage density of the buffer device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

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

[0026] FIG1 is a schematic diagram of a hydrogen supply system with a buffering function according to embodiments 1 and 2 of the present invention;

[0027] FIG2 is a schematic diagram of a hydrogen supply system with a buffering function according to Example 3 of the present invention;

[0028] FIG3 is a schematic diagram of a hydrogen supply system with a buffering function according to Example 4 of the present invention.

[0029] Description of Reference Numerals

[0030] 10. A hydrogen supply system with a buffering function; 100. A reaction chamber; 200. A storage box; 201. A water storage container; 202. A methanol storage container; 203. A mixer; 204. A mixing container; 205. A mixing pump; 300. A purification device; 301. A gas-liquid separator; 302. A waste container; 303. A waste pump; 400. A buffer device; 500. A drive pump; 600. A reflux pump; 20. Hydrogen-using equipment. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In this article, "optionally", "optional", "optional" means optional, that is, it means to be selected from any of the two parallel solutions of "yes" or "no". If there are multiple "optional" in a technical solution, unless otherwise specified and there is no contradiction or mutual restriction, each "optional" is independent. In this application, the descriptions such as "optionally contain" and "optionally include" mean "contain or not contain".

[0037] In the present invention, unless otherwise stated, the sum of the parts of each component in the composition can be 100 parts by weight. Unless otherwise specified, the basis of the percentages (including weight percentages) of the present invention is the total weight of the composition. In addition, "wt%" herein means mass percentage, and "at%" means atomic percentage.

[0038] In the present application, when it comes to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values ​​in the numerical interval is considered to be continuous, and includes the two numerical endpoints (i.e., the minimum and maximum values) of the numerical interval, and each numerical value between the two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to an integer in the numerical interval, it includes the two endpoint integers of the numerical range, and each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe features or characteristics, 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. "Numerical interval" allows for a broad range of quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the 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 in the existing fuel cell hydrogen supply method: (1) The larger the pressure and volume specifications 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 when the fuel cell changes load or turns on and off, there will be a problem of untimely response. The hydrogen supply system with a buffering function will be described below in conjunction with the accompanying drawings.

[0041] The hydrogen supply system with buffering function provided in the embodiment of the present application is exemplarily shown in Figure 1, which is a schematic diagram of the structure of the hydrogen supply system with buffering function provided in the embodiment of the present application. The hydrogen supply system with buffering function of the present application can be used to supply hydrogen to a fuel cell.

[0042] In order to more clearly illustrate the structure of the hydrogen supply system with a buffer function, the hydrogen supply system with a buffer function will be introduced below with reference to the accompanying drawings.

[0043] Exemplarily, referring to FIG. 1 , 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 .

[0044] The reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction. The storage tank 200 is connected to the reaction chamber 100, and the storage tank 200 is used to store the fuel for reforming hydrogen production or the reactant for organic liquid hydrogen storage. The purification device 300 is connected to the reaction chamber 100 for purifying the 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 the dye battery for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid hydrogen storage materials for storing and buffering the purified hydrogen.

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

[0046] Conventional buffer tanks in the prior art use gaseous hydrogen for buffering. Based on the consideration that the system pressure resistance is not too high and it is not conducive to the hydrogen release reaction, the pressure in the buffer device 400 in this application is 200kPa~400kPa. At this time, the volumetric hydrogen storage density of the buffer device 400 is generally around 0.3g / L. The volumetric hydrogen storage density of the solid-state hydrogen storage system is 50g / L~100g / L. To store the same mass of hydrogen, the volume of the solid-state hydrogen storage system in this application is two orders of magnitude smaller than the volume of the gaseous hydrogen buffer tank in the conventional technology. The buffer device 400 used in this application can reduce the system volume.

[0047] In some embodiments, as shown in Fig. 1, one or more liquid fuels including ethanol, propane and diesel are stored in the storage tank 200. A catalyst for catalytic reforming reaction is fixed in the reaction chamber 100, and the reforming catalyst includes one or more of palladium carbon catalyst and copper-based catalyst.

[0048] In some embodiments, methanol aqueous solution is stored in the storage tank 200. A reforming catalyst for catalyzing the reforming reaction is fixed in the reaction chamber 100, and the reforming catalyst includes one or more of palladium carbon catalyst, copper-based catalyst, platinum group metal catalyst, and nickel-based catalyst.

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

[0050] In some embodiments, as shown in FIG2 , 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 through 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, as shown in FIG. 2 , a mixing pump 205 is provided 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 the embodiments, as shown in FIG. 2 , the water storage container 201 is also connected to the hydrogen-using device 20 to collect water generated by the hydrogen-using device 20 .

[0053] In some embodiments, one or both of palladium membrane purification and PSA purification are provided in the purification device 300 to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the generated hydrogen to reduce the impurity gas content and then merge it into the main pipeline.

[0054] It should be noted that palladium membrane purification is a technology that uses the selective permeability of palladium metal to hydrogen to achieve gas separation and purification. Palladium and its alloys can allow hydrogen molecules to pass through in atomic form while blocking most other gases (including oxygen, nitrogen, carbon monoxide, etc.), thereby achieving the purpose of extracting high-purity hydrogen from mixed gases. This technology is widely used in the chemical, electronic and energy fields, especially in fuel cell hydrogen supply systems. The working principle of the palladium membrane: using 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 palladium and diffuses to the other side, and finally recombine into hydrogen molecules on the other side of the palladium membrane and escapes, thereby achieving hydrogen purification.

[0055] PSA purification, or Pressure Swing Adsorption, is a widely used technology for gas separation and purification. This technology is particularly suitable for extracting specific components from mixed gases, such as hydrogen, nitrogen or oxygen. The PSA process mainly relies on the selective adsorption characteristics of the adsorbent material to adsorb and desorb the target gas under different pressure conditions to achieve gas separation. The working principle of PSA purification: (1) High-pressure adsorption stage: Under high pressure, the raw gas passes through an adsorption tower equipped with a selective adsorbent. During this process, the adsorbent selectively adsorbs certain components (usually impurities) in the mixed gas and allows the target gas (such as hydrogen) to pass through. (2) Low-pressure desorption stage: When the adsorbent is close to saturation, it switches to a low pressure or vacuum state, so that the previously adsorbed components are desorbed from the adsorbent and discharged from the system. At this time, the adsorbent returns to its initial state and is ready to enter the next cycle. (3) Cyclic operation: Usually, a PSA device contains at least two or more adsorption towers, which alternately perform the adsorption-regeneration process to ensure continuous production of the target gas.

[0056] In some embodiments, as shown in FIG3 , the storage tank 200 stores one or more organic liquid hydrogen storage materials including benzene, toluene, xylene, carbazole and ethylcarbazole, and the reaction chamber 100 is fixed with a hydrogen storage catalyst for catalyzing organic liquid hydrogen storage, and the hydrogen storage catalyst includes a palladium-platinum-based catalyst and a nickel-based catalyst. Liquid organic hydrogen storage materials (LOHC) are a technology that stores hydrogen in liquid organic compounds through chemical reactions. This method uses specific organic molecules to reversibly absorb and release hydrogen under the action of appropriate catalysts. Compared with traditional high-pressure gaseous or low-temperature liquid hydrogen storage methods, LOHC has the advantages of higher safety, easier transportation and the ability to utilize existing fuel infrastructure. Working principle of organic liquid hydrogen storage: (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 and returns to the original organic carrier. This process is called "dehydrogenation" or "dehydrogenation".

[0057] In some of the embodiments, as shown in FIG. 3 , the purification device 300 includes a gas-liquid separator 301 , and the gas-liquid separator 301 is used to separate the organic liquid hydrogen storage product from hydrogen.

[0058] In some embodiments, as shown in FIG3 , the gas-liquid separator 301 is further connected to a waste container 302 for collecting the organic liquid hydrogen storage product after gas-liquid separation. A waste pump 303 is provided on the pipeline between the gas-liquid separator 301 and the waste container 302 .

[0059] In some of the embodiments, a solid hydrogen storage alloy is placed in the buffer device 400, such as lanthanum nickel series, iron titanium series, magnesium hydride, etc. The main features of solid hydrogen storage alloys include: (1) High energy density: Compared with high-pressure gaseous and low-temperature liquid hydrogen storage, solid 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 bound in the alloy, the risk of leakage is lower under normal operating conditions, which is safer 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 undergo thousands of hydrogen absorption and desorption cycles without significant performance degradation. (5) Environmental adaptability: Some hydrogen storage alloys can operate in a wide temperature range and are suitable for different climatic conditions.

[0060] In some of the embodiments, the solid hydrogen storage alloy includes: Rare earth hydrogen storage alloys (such as LaNi5): These alloys usually contain lanthanide elements and have good hydrogen absorption and desorption properties. Magnesium-based hydrogen storage alloys (such as MgH2): Magnesium and its compounds have attracted attention due to their high theoretical hydrogen storage capacity, but there are problems such as difficulty in activation in practical applications. Titanium-based hydrogen storage alloys (such as TiFe): These alloys are relatively low in cost, but may require pretreatment to improve their hydrogen absorption capacity. Zirconium-based hydrogen storage alloys (such as ZrV2): These alloys have good kinetic properties and are suitable for rapid hydrogen charging and desorption.

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

[0062] An embodiment of the present application provides a hydrogen utilization device 20 .

[0063] A hydrogen-using device 20 includes the above-mentioned hydrogen supply system with buffering function, and the hydrogen-using device 20 is 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, and a hydrogen-oxygen carbon removal machine.

[0064] Example 1

[0065] 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.

[0066] As shown in FIG1 , the reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is provided between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store fuel for reforming hydrogen production 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 battery for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid hydrogen storage materials for storing and buffering the purified hydrogen.

[0067] As shown in FIG1 , liquid fuels including ethanol and propane are stored in the storage tank 200. A catalyst for catalytic reforming reaction is fixed in the reaction chamber 100, and the reforming catalyst includes a palladium-carbon catalyst and a copper-based catalyst.

[0068] The purification device 300 is provided with a palladium membrane purification to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the generated hydrogen to reduce the impurity gas content and then merge it into the main pipeline.

[0069] The buffer device 400 contains a solid hydrogen storage alloy, a 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] As shown in FIG1 , the reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is provided between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store fuel for reforming hydrogen production 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 battery for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid hydrogen storage materials for storing and buffering the purified hydrogen.

[0073] As shown in Fig. 1, in some embodiments, a methanol aqueous solution is stored in the storage tank 200. A reforming catalyst for catalyzing the reforming reaction is fixed in the reaction chamber 100, and the reforming catalyst includes a palladium carbon catalyst.

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

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

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

[0077] Example 3

[0078] 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.

[0079] As shown in FIG2 , the reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is provided between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store fuel for reforming hydrogen production 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 battery for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid hydrogen storage materials for storing and buffering the purified hydrogen.

[0080] 2 , 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 .

[0081] As shown in FIG. 2 , 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 .

[0082] As shown in FIG. 2 , the water storage container 201 is also connected to the hydrogen-using device 20 to collect water generated by the hydrogen-using device 20 .

[0083] As shown in FIG. 2 , a reflux pump 600 is provided between the water storage container 201 and the hydrogen-using device 20 .

[0084] The purification device 300 is provided with a palladium membrane purification to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the generated hydrogen to reduce the impurity gas content and then merge it into the main pipeline.

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

[0086] Example 4

[0087] 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.

[0088] As shown in FIG3 , the reaction chamber 100 is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction. The storage tank 200 is connected to the reaction chamber 100, and a driving pump 500 is provided between the reaction chamber 100 and the storage tank 200. The storage tank 200 is used to store fuel for reforming hydrogen production 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 battery for supplying hydrogen to the buffer device 400. The buffer device 400 is used to store solid hydrogen storage materials for storing and buffering the purified hydrogen.

[0089] As shown in FIG3 , the storage box 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, and the hydrogen storage catalyst includes a palladium-platinum-based catalyst and a nickel-based catalyst. The purification device 300 includes a gas-liquid separator 301, and the gas-liquid separator 301 is used to separate the organic liquid hydrogen storage product from hydrogen. The gas-liquid separator 301 is also connected to a waste container 302 for collecting the organic liquid hydrogen storage product after gas-liquid separation.

[0090] The purification device 300 is provided with a palladium membrane purification and a PSA purification to purify the hydrogen produced by the reaction chamber 100. The purification device 300 is used to purify the generated hydrogen, reduce the impurity gas content, and then merge into the main pipeline.

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

[0092] To summarize, the hydrogen supply system with buffering function of the present application adopts a buffer device 400 for solid-state hydrogen storage, achieving a volume hydrogen storage density between 90g / L and 100g / L, without requiring additional accessory power consumption, thereby greatly reducing the volume hydrogen storage density of the buffer device 400.

[0093] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0095] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hydrogen supply system with a buffering function, characterized in that: include: A reaction chamber, wherein the reaction chamber is used for reforming hydrogen production or organic liquid hydrogen storage and dehydrogenation reaction; A storage tank, the storage tank is connected to the reaction chamber, and the storage tank is used to store fuel for reforming to produce hydrogen, or reactants for organic liquid hydrogen storage; a purification device connected to the reaction chamber for purifying hydrogen from the reaction chamber; as well as A buffer device is connected to the purification device. The buffer device and the purification device are also used to connect to a dye battery for supplying hydrogen to the buffer device. The buffer device is used to store solid hydrogen storage materials for storage and buffering of purified hydrogen.

2. The hydrogen supply system with buffering function according to claim 1, characterized in that: The storage tank stores one or more liquid fuels including ethanol, propane and diesel, and the reaction chamber is fixed with a catalyst for catalytic reforming reaction, and the reforming catalyst includes one or more of a palladium-carbon catalyst and a copper-based catalyst.

3. The hydrogen supply system with buffering function according to claim 1, characterized in that: A methanol aqueous solution is stored in the storage box, and a reforming catalyst for catalyzing the reforming reaction is fixed in the reaction chamber. The reforming catalyst includes one or more of a palladium-carbon catalyst, a copper-based catalyst, a platinum group metal catalyst, and a nickel-based catalyst.

4. The hydrogen supply system with buffering function according to claim 3, characterized in that: The mass concentration of the methanol aqueous solution is 50wt%~70wt%.

5. The hydrogen supply system with buffering function according to any one of claims 3 to 4, characterized in that: The storage box includes a water storage container, a methanol storage container, a mixer and a mixing container, and the water storage container and the methanol storage container are connected to the mixing container through the mixer.

6. The hydrogen supply system with buffering function according to claim 5, characterized in that: The hydrogen supply system with buffer function also meets at least one of the following conditions: (1) A mixing pump is provided between the water storage container and the mixer and / or between the methanol storage container and the mixer; (2) The water storage container is also connected to the hydrogen-using equipment to collect water generated by the hydrogen-using equipment.

7. The hydrogen supply system with buffering function according to any one of claims 2 to 4 and 6, characterized in that: The purification device is provided with one or both of palladium membrane purification and PSA purification to purify the hydrogen produced by the reaction chamber.

8. The hydrogen supply system with buffering function according to claim 7, characterized in that: The storage material box stores one or more organic liquid hydrogen storage materials selected from the group consisting of benzene, toluene, xylene, carbazole and ethylcarbazole. The reaction chamber is fixed with a hydrogen storage catalyst for catalyzing the organic liquid hydrogen storage. The hydrogen storage catalyst includes a palladium-platinum-based catalyst and a nickel-based catalyst.

9. The hydrogen supply system with buffering function according to claim 8, characterized in that: The purification device comprises a gas-liquid separator, which is used to separate the organic liquid hydrogen storage product from hydrogen; The gas-liquid separator is also connected to a waste container for collecting the organic liquid hydrogen storage product after gas-liquid separation.

10. A hydrogen-using device, characterized in that: The hydrogen-using equipment includes the hydrogen supply system with buffering function as described in any one of claims 1 to 9, and the hydrogen-using equipment is a PEM fuel cell, a solid oxide fuel cell, a hydrogen internal combustion engine, a hydrogen catalytic combustion device, a hydrogen reduction furnace, and a hydrogen-oxygen carbon removal machine.

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