CN115057408A - Hydrogen production apparatus and method - Google Patents
Hydrogen production apparatus and method Download PDFInfo
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- CN115057408A CN115057408A CN202210666496.0A CN202210666496A CN115057408A CN 115057408 A CN115057408 A CN 115057408A CN 202210666496 A CN202210666496 A CN 202210666496A CN 115057408 A CN115057408 A CN 115057408A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
- C01B3/08—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents with metals
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/06—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to the technical field of hydrogen production, in particular to a hydrogen production device and a hydrogen production method. The method comprises the following steps: the water storage device is provided with a first water outlet; the device comprises a hydrogen production reactor, a first water inlet, a second water outlet, an air inlet, an air outlet and a temperature sensor, wherein a porous device and a heat dissipation device are arranged in a cavity of the hydrogen production reactor; the porous device is used for filling metal hydrogen storage materials, the heat dissipation device is sleeved outside the porous device, one end of the heat dissipation device is communicated with the second water inlet, and the other end of the heat dissipation device is communicated with the second water outlet. The hydrogen production device and the hydrogen production method can improve the hydrogen production rate and control the hydrogen production reaction temperature.
Description
Technical Field
The invention relates to the technical field of hydrogen production, in particular to a hydrogen production device and a hydrogen production method.
Background
The hydrogen energy is a high enthalpy energy source, and is concerned about solving the problems of energy crisis, environmental pollution and the like. At present, in the commercial application of hydrogen, the modes of high-pressure gaseous hydrogen storage, liquid hydrogen storage, metal hydrogen storage and the like are mainly adopted. Wherein, the high-pressure gaseous hydrogen storage has the problems of low energy density, easy leakage, poor safety and the like; the liquid hydrogen storage has the problems of short hydrogen storage time and high cost due to the heat insulation failure; the metal hydrogen storage has the advantages of immediate production and use, high energy density and the like, and is widely researched, developed and applied. In the field of metal hydrogen storage, the aluminum water hydrogen production technology is considered to be a hydrogen production scheme with low cost, high hydrogen storage density and environmental protection. However, the aluminum powder has active chemical characteristics, which causes the following problems in the hydrogen production reaction from aluminum water: 1) the reaction is violent, the reaction progress is difficult to control, the reaction temperature is high, the heat release is high, and the heat dissipation is difficult; 2) the reaction is insufficient, so that reactants and products coexist, and the hydrogen production rate is low; 3) the hydrogen production rate and the hydrogen pressure are unstable.
Disclosure of Invention
Therefore, a hydrogen production device and a hydrogen production method which can improve the hydrogen production rate and can control the hydrogen production reaction temperature are needed to be provided.
In one aspect of the present invention, there is provided a hydrogen production apparatus comprising:
the water storage device is provided with a first water outlet; and
the device comprises a hydrogen production reactor, a first water inlet, a second water outlet, an air inlet, an air outlet and a temperature sensor, wherein a porous device and a heat dissipation device are installed in a cavity of the hydrogen production reactor; the porous device is used for filling metal hydrogen storage materials, the heat dissipation device is sleeved outside the porous device, one end of the heat dissipation device is communicated with the second water inlet, and the other end of the heat dissipation device is communicated with the second water outlet.
In one embodiment, the hydrogen production reactor is further provided with a plurality of sets of fins.
In one embodiment, a water inlet pipe is installed at the first water inlet, an electromagnetic valve is arranged on the water inlet pipe, and a liquid spraying device is arranged at the end part of the water inlet pipe located in the hydrogen production reactor.
In one embodiment, the heat dissipation device is a metal tube, and the metal tube is spirally wound outside the porous device.
In one embodiment, the temperature sensors are multiple, and the multiple temperature sensors are distributed on the side wall of the hydrogen production reactor at equal intervals.
In one embodiment, the water storage device is further provided with a temperature sensor connector and a water-cooling radiator; the temperature sensor connector is electrically connected with the plurality of temperature sensors, and the water-cooling radiator is used for radiating heat in the water storage device.
In one embodiment, a pressure relief valve and a pressure sensor are further arranged on the hydrogen production reactor.
In one embodiment, the porous device is a metal woven mesh tube.
In one embodiment, the water pump further comprises a pump body, and the water inlet of the pump body is communicated with the first water outlet.
In one aspect of the present invention, a hydrogen production method is further provided, which uses the above hydrogen production apparatus, and includes the following steps:
filling a metal hydrogen storage material into the porous device, and inputting protective gas into the hydrogen production reactor through the gas inlet; and
inputting reaction water into the hydrogen production reactor through the first water inlet so that the reaction water reacts with the metal hydrogen storage material to prepare hydrogen, and outputting the generated hydrogen through the gas outlet; in the reaction process, when the temperature sensor displays that the temperature in the hydrogen production reactor is greater than or equal to the reaction temperature threshold value, the first water outlet is opened, so that the water in the water storage device is input into the heat dissipation device through the second water inlet and is output through the second water outlet to dissipate the heat generated by the hydrogen production reaction.
In one embodiment, the metallic hydrogen storage material comprises one or more of aluminum, rare earth compounds, titanium-based compounds, magnesium-based compounds, and metal alloys; and/or the metal alloy comprises one or more of aluminum, vanadium, niobium, and zirconium.
The hydrogen production device can quickly transfer heat generated by hydrogen production reaction to the external environment through the matching of the water storage device, the heat dissipation device and other components, achieves the purpose of controllable temperature of the hydrogen production reaction (such as an aluminum water hydrogen production technology), and is quick in heat dissipation and high in heat dissipation amount.
In addition, aiming at the problem that the hydrogen production rate is low because the metal hydrogen storage material is easy to harden and the reaction product is easy to cause in the reaction process of the metal hydrogen storage material with water, the invention is provided with the porous device to avoid the problem, so that the hydrogen production reaction has excellent reaction stability and high hydrogen production rate. The hydrogen production device can control the reaction pressure and temperature of the hydrogen production reaction, and further has stable hydrogen production rate and hydrogen pressure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a hydrogen plant according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of a hydrogen production reactor in one embodiment of the present invention;
FIG. 3 is a cross-sectional view A-A' of a hydrogen production reactor;
figure 4 is a top view of a hydrogen production reactor.
Description of reference numerals:
100. a water storage device; 101. a temperature sensor connector; 102. a water-cooled radiator; 200. a hydrogen production reactor; 201. a first water inlet; 202. a second water inlet; 203. a second water outlet; 204. an air inlet; 205. an air outlet; 206. a temperature sensor; 207. a porous device; 208. a heat sink; 209. a fin; 210. a water inlet pipe; 211. an electromagnetic valve; 212. a liquid spray device; 213. a pressure relief valve; 214. a pressure sensor; 215. an air inlet pipe; 216. an air outlet pipe; 217. a top cover; 218. a cavity; 300. and a pump body.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.
As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply mean that the first feature is at a greater or equal level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Understandably, in the field of metal hydrogen storage, the traditional hydrolysis hydrogen production reaction, such as the aluminum water hydrogen production technology, has the defects of violent and difficult control of the reaction, high heat production, difficult heat dissipation, low hydrogen production rate, unstable hydrogen production rate and hydrogen pressure and the like. Therefore, the invention provides a hydrogen production device, which can quickly transfer heat generated by hydrogen production reaction to the external environment through the matching of the water storage device 100, the heat dissipation device 200 and other components, achieves the purpose of temperature control of the hydrogen production reaction (such as an aluminum water hydrogen production technology), and has the advantages of quick heat dissipation and high heat dissipation amount. And the hydrogen production reaction has excellent reaction stability and high hydrogen production rate by arranging the porous device 207. The hydrogen production device can control the reaction pressure and temperature of the hydrogen production reaction, and further has stable hydrogen production rate and hydrogen pressure.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a hydrogen production apparatus in an embodiment of the present invention, and the hydrogen production apparatus provided in an embodiment of the present invention includes a water storage apparatus 100 and a hydrogen production reactor 200. Wherein:
(1) water storage device 100
The water storage device 100 is provided with a first water outlet and is communicated with a second water inlet 202 of the hydrogen production reactor 200 through the first water outlet so as to convey the water in the water storage device 100 into the hydrogen production reactor 200, thereby realizing heat dissipation of the hydrogen production reactor 200. Wherein, the first water outlet is located at the bottom of the water storage device 100.
In some embodiments, the hydrogen production apparatus further comprises a pump body 300, wherein a water inlet of the pump body 300 is communicated with the first water outlet, and a water outlet of the pump body 300 is communicated with the second water inlet 202 of the hydrogen production reactor 200.
In some embodiments, the pump body 300 is not limited in kind and may be a water pump, for example, as long as water delivery is possible. Wherein, the pump body 300 may be located on a sidewall of the water storage device 100.
In some embodiments, the water storage apparatus 100 is further provided with a temperature sensor connector 101 and a water-cooled radiator 102, wherein the water-cooled radiator 102 is used for dissipating heat in the water storage apparatus 100. The temperature sensor connector 101 and the water-cooled radiator 102 may be located on a sidewall of the water storage apparatus 100.
Specifically, the water-cooled radiator 102 is communicated with the water storage device 100 through a pipeline, and heat in the water storage device 100 is taken away by forced circulation under the driving of a water pump of the water-cooled radiator 102, so that heat interaction between a water body in the water storage device 100 and an external environment (air) is realized.
In some embodiments, to better achieve heat dissipation of hydrogen production reactor 200, hydrogen production reactor 200 may be located within water storage device 100 to enable hydrogen production reactor 200 to be wrapped by a body of water within the water storage device, thereby enabling heat generated by hydrogen production reactor 200 to be transferred to the body of water within water storage device 100 via thermal convection.
In some embodiments, to increase the convenience of the hydrogen production apparatus, the bottom of the water storage apparatus 100 may be further provided with pulleys.
(2) Hydrogen production reactor 200
Referring to fig. 2, fig. 3 and fig. 4, the hydrogen production reactor 200 includes a first water inlet 201, a second water inlet 202, a second water outlet 203, a gas inlet 204, a gas outlet 205, a temperature sensor 206, a porous device 207, and a heat sink 208; the first water inlet 201, the air inlet 204 and the air outlet 205 are all located at the top of the hydrogen production reactor 200, the second water inlet 202, the second water outlet 203 and the temperature sensor 206 are all located on the side wall of the hydrogen production reactor 200, the porous device 207 is located inside the hydrogen production reactor 200, and the heat dissipation device 208 is sleeved outside the porous device 207.
The inlet port 204 is used to deliver a shielding gas into the hydrogen production reactor 200 to displace air within the hydrogen production reactor 200.
The gas outlet 205 is used for outputting hydrogen generated by the hydrogen production reaction, and in some embodiments, an end of the gas outlet 205 may be further connected to a condensing device, a drying device, and a buffering device (not shown) in sequence through a pipeline, so as to perform a post-treatment on the hydrogen.
The temperature sensor 206 is used for monitoring the temperature inside the hydrogen production reactor 200, in some embodiments, there may be a plurality of temperature sensors 206, a plurality of temperature sensors 206 are distributed on the side wall of the hydrogen production reactor 200 at equal intervals, and the plurality of temperature sensors 206 are electrically connected with the temperature sensor connector 101.
The porous means 207 is located within the hydrogen production reactor 200 for filling with a metallic hydrogen storage material. In some embodiments, there may be a plurality of porous devices 207, and a plurality of porous devices 207 are arranged at intervals in the hydrogen production reactor 200, and it is understood that each porous device 207 may also overlap one or more porous devices 207 in the height direction of the hydrogen production reactor 200.
In some embodiments, the shape and material of the porous means 207 are not limited, for example, the porous means 207 may be cylindrical (rod-shaped), regular prismatic, irregular prismatic, or the like. Preferably, the porous device 207 is a rod-shaped metal woven mesh tube, specifically, a tube with a mesh-shaped side wall can be formed by weaving metal wires, and the metal woven mesh tube has impermeability of the metal hydrogen storage material and water flow conductivity, that is, the metal woven mesh tube can ensure that the metal hydrogen storage material filled in the metal woven mesh tube cannot leak and simultaneously can enable water to flow in the metal woven mesh tube, so that hydrogen production through reaction of the metal hydrogen storage material and the water is realized. By filling the metal hydrogen storage material in the porous device 207, i.e. making the metal hydrogen storage material into a bar form, the problems of reactant and product hardening, low hydrogen yield and the like easily caused by adding excessive water into a small amount of metal hydrogen storage material can be avoided. Preferably, the metal woven mesh tube is a stainless steel woven mesh tube.
One end of the heat dissipation device 208 is communicated with the first water outlet via the second water inlet 202, and the other end of the heat dissipation device 208 is communicated with the second water outlet 203, so that the water in the water storage device 100 is conveyed into the heat dissipation device 208 in a circulating manner, and heat interaction between the water in the water storage device 100 and the heat dissipation device 208 is realized.
In some embodiments, the shape of the heat dissipation device 208 is not limited, and is based on being able to be sleeved outside the porous device 207 without affecting the water flow inside the porous device 207, for example, the heat dissipation device 208 may be a tube, and is spirally wound outside the porous device 207. In order to enhance the heat dissipation effect, in some embodiments, the material of the heat dissipation device 208 is metal, for example, iron, stainless steel, copper, etc., preferably copper, and more preferably brass. In one embodiment, the heat sink 208 is a brass metal tube that is helically wound around the exterior of the porous means 207.
In some embodiments, a plurality of sets of fins 209 are also provided on hydrogen production reactor 200. The heat exchange surface area of the hydrogen production reactor 200 can be increased by adding the fins 209, so that the heat dissipation effect can be further improved. The plurality of sets of fins 209 may be distributed on the sidewall and the bottom of the hydrogen production reactor 200, and preferably, the plurality of sets of fins 209 are distributed on the sidewall and the bottom of the hydrogen production reactor 200 at equal intervals.
In some embodiments, a water inlet pipe 210 is installed at the first water inlet 201, a solenoid valve 211 is arranged on the water inlet pipe 210, and a liquid spraying device 212 is arranged at the end of the water inlet pipe 210 located in the hydrogen production reactor 200. The electromagnetic valve 211 can regulate the flow rate of the water, and the liquid spraying device 212 can be any liquid spraying structure commonly used in the field, so as to uniformly disperse the water in the porous devices 207, for example, the liquid spraying device 212 can be a nozzle.
To improve the safety of the plant in use, in some embodiments, hydrogen production reactor 200 is provided with pressure relief valve 213 and pressure sensor 214. Wherein, pressure relief valve 213 and pressure sensor 214 may be located at the top of hydrogen production reactor 200. The pressure relief valve 213 can be automatically opened and closed according to the working pressure of the system, and is automatically opened under the high-pressure condition to discharge the gas inside the hydrogen production reactor 200, so as to reduce the pressure of the gas; and when the pressure is too low, the pressure relief valve 213 can be automatically closed, so that the hydrogen production reactor 200 recovers to normal pressure. The pressure value within hydrogen production reactor 200 may be obtained in real time by pressure sensor 214.
In some embodiments, an air inlet pipe 215 may be further installed at the air inlet 204, and an air outlet pipe 216 may be also installed at the air outlet 205.
In some embodiments, hydrogen production reactor 200 further comprises a top cap 217, said top cap 217 for sealing hydrogen production reactor 200. Wherein, first water inlet 201, air inlet 204, gas outlet 205, relief valve 213 and pressure sensor 214 all install on top cap 217.
In some embodiments, top cap 217 may be bolted to cavity 218 of hydrogen production reactor 200.
In some embodiments, to improve the tightness of hydrogen production reactor 200, a sealing ring is further provided on the side of top cap 217 located on hydrogen production reactor 200.
It should be noted that the connection means not specifically described in the present invention may be any connection means commonly used in the art, such as welding.
Another embodiment of the present invention provides a method for producing hydrogen, which includes the steps of:
step S100: filling a metal hydrogen storage material into the porous device 207, and inputting protective gas through the gas inlet 204;
the air within hydrogen production reactor 200 may be vented by introducing a shielding gas. The protective gas is not limited, and a gas commonly used in the art is selected as the protective gas, and may be, for example, nitrogen, argon, or a mixed gas of nitrogen and argon.
Step S200: inputting reaction water into the hydrogen production reactor 200 through the first water inlet 201, so that the reaction water reacts with the metal hydrogen storage material to prepare hydrogen, and outputting the generated hydrogen through the gas outlet 205; it should be noted that, in the process of preparing hydrogen, when the temperature sensor 206 indicates that the temperature in the hydrogen production reactor 200 is greater than or equal to the reaction temperature threshold, the first water outlet is opened, so that the water in the water storage device 100 is input into the heat dissipation device 208 through the second water inlet 202. The reaction temperature threshold refers to the maximum temperature that can be produced by the reaction of a metallic hydrogen storage material with water.
In one embodiment, the metallic hydrogen storage material is not limited and any metallic hydrogen storage material known in the art may be used, including but not limited to one or more of aluminum, rare earth compounds, titanium-based compounds, magnesium-based compounds, and metal alloys comprising one or more of aluminum, vanadium, niobium, and zirconium.
The present invention will be described in detail with reference to examples.
Example 1
A hydrogen production apparatus shown in FIGS. 1 to 4 is used. As shown in fig. 1 to 4, the pump body 300, the temperature sensor connector 101 and the water-cooled heat sink 102 are welded to the side wall of the water storage device 100. The hydrogen production reactor 200 is located in the water storage device 100 and is wrapped by a water body.
The hydrogen production reactor 200 is composed of a top cover 217 and a cavity 218 which are connected by bolts, and in order to improve the tightness, the top cover 217 is further provided with a sealing ring at one side of the cavity 218. The cavity 218 is provided with a temperature sensor 206, a fin 209, a second water inlet 202 and a second water outlet 203, and the temperature sensor 206 is electrically connected with the temperature sensor connector 101. The top cover 217 is respectively provided with a first water inlet 201, an air inlet 204, an air outlet 205, a pressure relief valve 213, a pressure sensor 214 and a water inlet pipe 210 installed in the first water inlet 201, and the water inlet pipe 210 is also provided with an electromagnetic valve 211, an air inlet pipe 215 installed in the air inlet 204 and an air outlet pipe 216 installed in the air outlet 205. The air inlet pipe 215 is further provided with a liquid spraying device 212 at one end located in the cavity 218. The cavity 218 is provided with a porous device 207 and a heat dissipation device 208 sleeved outside the porous device 207.
Wherein, the porous device 207 is a mesh tube woven by 316 stainless steel wires, which can lead water to flow while sealing the aluminum powder; the liquid spray device 212 is a spray head; the heat sink 208 is a helical brass tube. The method comprises the following specific steps:
1) respectively filling 5kg of aluminum powder into 13 porous devices 207, fully compacting, preparing aluminum rods, and uniformly arranging the aluminum rods in the hydrogen production reactor 200 at intervals;
2) inputting nitrogen into the hydrogen production reactor 200 via the inlet pipe 210 to purge air from the hydrogen production reactor 200;
3) 10L of water is input to the spray head through the water inlet pipe 210, and water is uniformly dispersed to the aluminum rod through the spray head, so that aluminum powder reacts with the water to produce hydrogen, and the produced hydrogen is output through the air outlet 205; the heat generated in the process of preparing hydrogen firstly carries out heat convection through the water in the hydrogen production reactor 200 and the water storage device 100, and the heat is transferred into the water; meanwhile, observing the temperature sensor 206, when the reaction temperature threshold reaches 100 ℃, starting the water-cooled radiator 102, conveying the water body into the radiator 208 through the second water inlet 202, and flowing out through the water outlet end of the radiator 208, so as to perform heat dissipation in a circulating and reciprocating manner. The pressure in hydrogen production reactor 200 can be known by pressure sensor 214 and automatically regulated by pressure relief valve 213 to maintain the pressure in hydrogen production reactor 200 at a normal level. Experiments show that in the process of producing hydrogen by reacting 5kg of aluminum powder with water, the hydrogen production device can control the temperature of hydrogen production by reaction within 70 ℃ from 150 ℃, and the temperature of the water body in the water storage device 100 is not more than 35 ℃; the hydrogen production rate is 80-90%, the produced hydrogen flow is stable at 10-30L/min, and the hydrogen can be continuously produced for more than 10 h. The hydrogen production device provided by the invention realizes good regulation and control of hydrogen production reaction temperature and pressure, and has high hydrogen production rate.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A hydrogen production apparatus, comprising:
the water storage device is provided with a first water outlet; and
the device comprises a hydrogen production reactor, a first water inlet, a second water outlet, an air inlet, an air outlet and a temperature sensor, wherein a porous device and a heat dissipation device are installed in a cavity of the hydrogen production reactor; the porous device is used for filling metal hydrogen storage materials, the heat dissipation device is sleeved outside the porous device, one end of the heat dissipation device is communicated with the second water inlet, and the other end of the heat dissipation device is communicated with the second water outlet.
2. The hydrogen generation apparatus of claim 1 wherein the hydrogen generation reactor is further provided with a plurality of sets of fins.
3. The hydrogen production device according to claim 1, wherein a water inlet pipe is installed at the first water inlet, an electromagnetic valve is arranged on the water inlet pipe, and a liquid spraying device is arranged at the end part of the water inlet pipe located in the hydrogen production reactor.
4. The hydrogen generation assembly of claim 1, wherein the heat dissipation assembly is a metal tube and the metal tube is spirally wound outside the porous assembly.
5. The hydrogen production apparatus according to claim 1, wherein the temperature sensor is provided in plurality, and the plurality of temperature sensors are distributed on the side wall of the hydrogen production reactor at equal intervals.
6. The hydrogen production plant according to claim 5, characterized in that the water storage device is further provided with a temperature sensor connector and a water-cooled radiator; the temperature sensor connector is electrically connected with the plurality of temperature sensors, and the water-cooling radiator is used for radiating heat in the water storage device.
7. The hydrogen production device according to claims 1 to 6, characterized in that a pressure relief valve and a pressure sensor are further arranged on the hydrogen production reactor.
8. The hydrogen generation device according to claims 1 to 6, wherein the porous device is a metal woven mesh tube.
9. The hydrogen production device according to claims 1 to 6, further comprising a pump body, wherein a water inlet of the pump body is communicated with the first water outlet.
10. A hydrogen production method characterized by using the hydrogen production apparatus according to any one of claims 1 to 9, comprising the steps of:
filling a metal hydrogen storage material into the porous device, and inputting protective gas into the hydrogen production reactor through the gas inlet; and
inputting reaction water into the hydrogen production reactor through the first water inlet so that the reaction water reacts with the metal hydrogen storage material to prepare hydrogen, and outputting the generated hydrogen through the gas outlet; in the reaction process, when the temperature sensor displays that the temperature in the hydrogen production reactor is greater than or equal to the reaction temperature threshold value, the second water outlet is opened, so that the water in the water storage device is input into the heat dissipation device through the second water inlet and is output through the second water outlet to dissipate heat generated by the hydrogen production reaction.
11. The method for producing hydrogen of claim 10, wherein the metallic hydrogen storage material comprises one or more of aluminum, rare earth compounds, titanium-based compounds, magnesium-based compounds, and metal alloys;
and/or the metal alloy comprises one or more of aluminum, vanadium, niobium, and zirconium.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115805045A (en) * | 2022-10-14 | 2023-03-17 | 清华大学 | Aluminum water hydrogen production device and control method thereof |
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| CN113488686A (en) * | 2021-06-17 | 2021-10-08 | 清研华科新能源研究院(南京)有限公司 | Flow-controllable hydrogen storage system and method |
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| CN115805045A (en) * | 2022-10-14 | 2023-03-17 | 清华大学 | Aluminum water hydrogen production device and control method thereof |
| CN115805045B (en) * | 2022-10-14 | 2024-04-09 | 清华大学 | Control method of aluminum water hydrogen production device |
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