Equipment and method for producing hydrogen by mixing, shearing and melting ice powder

Abstract

The invention relates to ice powder mixing, shearing and melting hydrogen production equipment and method, and relates to the technical field of hydrogen production. The ice powder mixing hydrogen production equipment comprises a box frame, an exchange membrane, a wire, a direct-current power supply, a pressure conveying device, a rotating device and a powder spraying device, the exchange membrane is arranged on the periphery of the box frame, wires are laid on the surfaces of the two sides of the exchange membrane respectively, the negative electrode of the direct-current power source is connected to the wire on the outer side surface of the exchange membrane, and the positive electrode of the direct-current power source is connected to the wire on the inner side surface of the exchange membrane; the pressure conveying device is used for extruding a mixture of ice powder and catalyst powder formed by water onto the rotating device, the rotating device is used for shearing and melting the mixture and throwing the mixture to the inner side surface of the exchange membrane, and a cathode electrocatalytic reaction is carried out to generate hydrogen; the powder spraying device is used for spraying the mixture to the outer side surface of the exchange membrane, and an anode electrocatalytic reaction is carried out to generate oxygen. According to the equipment and the method, the hydrogen can be produced by directly utilizing the solid ice widely existing in the nature.

Description

Technical Field

[0001] The present application relates to the technical field of hydrogen production, and in particular to an ice powder mixed shear melting hydrogen production device and method. Background Art

[0002] Hydrogen energy has excellent combustion performance and does not release pollutants after combustion. Hydrogen energy is recognized by the world as the cleanest energy. Therefore, vigorously developing hydrogen energy is an effective way to get rid of dependence on traditional fossil fuels and help my country achieve the "dual carbon" strategic goal. At the same time, the greening of hydrogen energy is also a direct way to achieve "carbon-free" energy, which has important value for industry research and promotion.

[0003] Hydrogen has been widely used in energy and chemical industry, aerospace, pharmaceutical, steel and metallurgy, etc. In addition, with the rapid development of fuel cell technology, hydrogen has also shown a huge market space in transportation, power generation, energy storage and other fields. The vast majority of my country's current hydrogen resources are gray hydrogen, accounting for about 80% of the total hydrogen production.

[0004] In the research related to the greening of hydrogen energy, electrolysis hydrogen production technology is the green hydrogen production process with the most application and research value. Previously, the electrolysis hydrogen production process was limited by factors such as the cost of technology application and the scale of application equipment, and its development lagged behind the by-product hydrogen of fossil fuels. However, with the gradual increase in the proportion of renewable energy utilization in recent years, especially the rapid development of renewable energy such as photovoltaics and wind power, conditions have been created for the full green chain of electrolysis hydrogen production technology. The development and promotion of electrolysis hydrogen production technology can accelerate the supply, promotion and use of hydrogen energy.

[0005] For electrolytic hydrogen production technology, the core of producing green hydrogen lies in the application of efficient electrolytic hydrogen production technology. At present, the hydrogen production technologies with high industrialization potential mainly include alkaline water electrolysis and proton exchange membrane water electrolysis. In addition, solid oxide electrolysis technology, anion exchange membrane water electrolysis technology, etc. have also become the main research directions.

[0006] (1) Alkaline electrolysis hydrogen production technology (ALK)

[0007] Alkaline electrolysis hydrogen production usually uses KOH or NaOH solution as the electrolyte, with a mass fraction of 20% to 30%. The diaphragm used is mostly made of porous polymer materials such as polyphenylene sulfide and polysulfone. At present, the alkaline water electrolysis technology has basically matured in my country and has formed a relatively complete industrial chain. The largest single-tank hydrogen production scale in the domestic large-scale application of electrolysis technology can reach 2000Nm 3 / h, the minimum DC power consumption can reach 4.2kWh / Nm 3The obvious disadvantages of this technology are that the current density is low during electrolysis, the efficiency of the electrolytic cell is low, and the footprint is large. Especially in the low temperature environment in winter, the equipment needs about 2 hours of preheating and startup time.

[0008] (2) Proton exchange membrane electrolysis hydrogen production technology (PEM)

[0009] The exchange membrane hydrogen production technology uses a proton exchange membrane as a diaphragm and does not require a liquid electrolyte. Compared with alkaline hydrogen production devices, the advantages of proton exchange membrane devices are flexible operation, small footprint, high hydrogen output pressure and purity, etc. The bipolar plates and stack cores required in the device must use rare metals, and the cost of this part accounts for about 10% of the cost of the entire proton exchange membrane electrolysis system, which greatly limits the industrial application of this hydrogen production technology.

[0010] (3) Solid oxide electrolysis hydrogen production technology (SOEC)

[0011] The solid oxide water electrolysis method for producing hydrogen uses ceramic materials as electrolytes, which is essentially an application of ionization technology. The working temperature of this method usually needs to reach above 600°C, and the electrolysis efficiency is relatively high. However, because the working environment temperature requirements of the device are too high, high temperature conditions will lead to unsatisfactory chemical stability and mechanical stress of the material, which can easily cause sintering of the catalytic material during the hydrogen production process and a decrease in the activity of the catalyst used. At present, this technology is still in the experimental stage in the laboratory, and there is still a certain distance from actual industrial application.

[0012] (4) Anion exchange membrane electrolysis hydrogen production technology (AEM)

[0013] Anion exchange membrane electrolysis hydrogen production technology mainly consists of anion exchange membrane and two transition metal catalytic electrodes. This technology has the characteristics of low cost, fast start and stop, and low energy consumption, but there are still unresolved technical problems, such as the anion exchange membrane will degrade and perforate in a strong alkaline environment, causing a short circuit. It can be seen that the overall technology is still in the research stage.

[0014] It can be seen that all the existing hydrogen production technologies by electrolysis are achieved by using direct current to electrolyze liquid water or aqueous solutions. The cathode and anode electrolytic cells are separated by a membrane structure. The liquid water or aqueous solution circulates in the electrolytic cell and contacts the catalyst loaded on the electrode to produce an electrolytic reaction, releasing hydrogen in the cathode electrolytic cell and oxygen in the anode electrolytic cell. Summary of the invention

[0015] The purpose of the present application is to provide an ice powder mixed shear melting hydrogen production device and method, which can realize the direct utilization of solid ice widely existing in nature to produce hydrogen.

[0016] In order to achieve the above-mentioned object, in a first aspect, the present invention provides an ice powder mixed shear melting hydrogen production device, the ice powder mixed hydrogen production device comprises a box frame, an exchange membrane, a conductor, a DC power supply, a pressure conveying device, a rotating device and a powder spraying device;

[0017] The exchange membrane is arranged around the box frame so that the box frame forms an inner space and an outer space which are isolated from each other. Conductors are laid on both sides of the exchange membrane, the negative pole of the DC power supply is connected to the conductor on the outer surface of the exchange membrane, and the positive pole of the DC power supply is connected to the conductor on the inner surface of the exchange membrane.

[0018] The rotating device is arranged below the middle of the box frame, and the pressure conveying device is arranged above the middle of the box frame. The pressure conveying device is used to squeeze the mixture of ice powder and catalyst powder formed by water onto the rotating device. The rotating device is used to shear and melt the mixture and throw it to the inner surface of the exchange membrane, and a cathode electrocatalytic reaction occurs to produce hydrogen.

[0019] The powder spraying device is arranged outside the box frame, and is used to spray the mixture onto the outer surface of the exchange membrane, and generate oxygen by an anode electrocatalytic reaction.

[0020] In an optional embodiment, the rotating device includes a motor, a transmission shaft and a grinding wheel connected in sequence from bottom to top, and the grinding wheel is used to receive the mixture transmitted by the pressure delivery device, and then shear and melt the mixture and throw it to the inner surface of the exchange membrane.

[0021] In an optional embodiment, the pressure delivery device includes a pressure output component and a hollow cylinder connected in sequence from bottom to top, and the hollow cylinder is vertically arranged directly above the rotating device.

[0022] In an optional embodiment, the powder spraying device includes a funnel, a conduit and a spray gun connected in sequence, the spray gun includes a gun body, a nozzle and an air inlet end, the nozzle and the air inlet end are respectively arranged at both ends of the gun body, and the nozzle is used to spray the mixture onto the inner surface of the exchange membrane.

[0023] In a second aspect, the present invention provides an ice powder mixed shear melting hydrogen production method, the ice powder mixed shear melting hydrogen production method adopts the ice powder mixed shear melting hydrogen production equipment of the aforementioned embodiment, the method comprises:

[0024] S1: Loading a mixture of ice powder formed by water and catalyst powder into a pressure conveying device and a powder spraying device;

[0025] S2: Start the DC power supply; use the pressure conveying device to convey the mixture to the rotating device, use the rotating device to shear and melt the mixture and throw it to the inner surface of the exchange membrane, so that the cathode electrocatalytic reaction occurs to produce hydrogen; use the powder spraying device to spray the mixture onto the outer surface of the exchange membrane, so that the anode electrocatalytic reaction occurs to produce oxygen.

[0026] In an optional implementation, before S1, the method further includes:

[0027] Solid ice naturally existing in nature is ground into ice powder by an ice grinder, and the ice powder is physically stirred and mixed with catalyst powder to prepare a mixture of ice powder and catalyst powder.

[0028] In an optional implementation manner, before S2, the method further includes:

[0029] Conductors are laid on both sides of the exchange membrane and fixed on the exchange membrane;

[0030] The exchange membrane with the conductors is arranged around the box frame, so that the box frame forms an inner space and an outer space which are isolated from each other;

[0031] The wire on the inner surface of the exchange membrane is connected to the negative electrode of the DC power supply, and the wire on the outer surface of the exchange membrane is connected to the positive electrode of the DC power supply.

[0032] In an optional embodiment, S2 includes:

[0033] Start the rotating device;

[0034] The pressure delivery device is started and delivers the mixture to the rotating device at a preset rate.

[0035] In an optional embodiment, S2 includes:

[0036] A plurality of powder spraying devices are used to evenly spray the mixture onto the exchange membranes around the box.

[0037] In an optional embodiment, after S2, the method includes:

[0038] S3: Extract the hydrogen inside the box and store it; discharge the oxygen outside the box into the atmosphere.

[0039] Through the above technical scheme, the equipment and method proposed in the embodiment of the present invention can completely solve the dilemma that all existing electrolytic hydrogen production technologies cannot realize the electrolytic decomposition of solid ice, and realize the direct mixing of ice powder and catalyst powder in unlimited proportions. The catalyst powder and ice powder can be directly physically mixed in any proportion, thereby greatly increasing the use of catalyst powder and improving the efficiency of hydrogen production by electrolysis. In addition, during use, the catalyst powder is directly and simply mixed with ice powder by a rubber plate, avoiding the complex operation of using impregnation, deposition, physical adsorption, ion exchange and other methods to coat the catalyst powder on the cathode and anode materials, greatly simplifying the use procedure of the catalyst powder and improving its economy during use.

[0040] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 This is a schematic diagram of the structure of the ice powder mixing shear melting hydrogen production equipment provided in an embodiment of the present application.

[0043] Icons: 1-box frame; 2-exchange membrane; 3-wire; 4-DC power supply; 5-motor; 6-drive shaft; 7-grinding wheel; 8-pressure output component; 9-hollow cylinder; 10-funnel; 11-conduit; 12-gun body; 13-nozzle; 14-air inlet end; 15-mixture; 16-water film. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] In nature, water exists not only in liquid form, but also in the form of solid ice. Ice is also composed of H2O, which is the same as the constituent components of water. Therefore, theoretically, a large amount of hydrogen and oxygen can also be produced by electrocatalytic electrolysis of ice powder in a suitable manner. However, in the current field of hydrogen energy, although the solid form of water - ice is widely present in nature, there are no devices and methods that can directly electrolyze solid ice to produce hydrogen at home and abroad, so it is impossible to develop and utilize the huge amount of ice in nature as a resource. The main reason is that ice is a solid form of water and cannot be arbitrarily flowed and transported like water. In the currently commonly used electrolysis technology, it cannot flow effectively in the device pipeline. In the electrolytic cell of the catalytic reaction, solid ice cannot effectively contact the electrode and catalyst, making it impossible to perform electrolysis reaction in the presence of solid ice, and ultimately making it impossible for the existing electrolytic hydrogen production technology to achieve electrocatalytic hydrogen production and utilization of solid ice, and ultimately unable to achieve direct utilization of solid ice that is widely present in nature.

[0048] Please refer to Figure 1 In order to realize the electrolysis hydrogen production technology so as to directly utilize natural solid ice as a resource, and to address the technical defect that all existing electrolysis hydrogen production technologies cannot realize the electrolytic decomposition of solid ice, this embodiment provides an ice powder mixed shear melting hydrogen production equipment.

[0049] Specifically, the ice powder mixing hydrogen production equipment includes a box frame 1, an exchange membrane 2, a conductor 3, a DC power supply 4, a pressure conveying device, a rotating device and a powder spraying device.

[0050] The exchange membrane 2 is arranged around the box frame 1 so that the box frame 1 forms an internal space and an external space that are isolated from each other. Wires 3 are laid on the two side surfaces of the exchange membrane 2 respectively, the negative electrode of the DC power supply 4 is connected to the wire 3 on the outer surface of the exchange membrane 2, and the positive electrode of the DC power supply 4 is connected to the wire 3 on the inner surface of the exchange membrane 2; the rotating device is arranged at the lower middle part of the box frame 1, and the pressure conveying device is arranged at the upper middle part of the box frame 1. The pressure conveying device is used to extrude a mixture 15 of ice powder and catalyst powder formed by water onto the rotating device, and the rotating device is used to shear and melt the mixture 15 and throw it to the inner surface of the exchange membrane 2, and a cathode electrocatalytic reaction occurs to produce hydrogen; the powder spraying device is arranged outside the box frame 1, and the powder spraying device is used to spray the mixture 15 onto the outer surface of the exchange membrane 2, and an anode electrocatalytic reaction occurs to produce oxygen.

[0051] The rotating device includes a motor 5, a transmission shaft 6 and a grinding wheel 7 connected in sequence from bottom to top. The grinding wheel 7 is used to receive the mixture 15 transmitted by the pressure conveying device, and then shear and melt the mixture 15 and throw it to the inner surface of the exchange membrane 2. The pressure conveying device includes a pressure output component 8 and a hollow cylinder 9 connected in sequence from bottom to top. The hollow cylinder 9 is vertically arranged directly above the rotating device. The powder spraying device includes a funnel 10, a conduit 11 and a spray gun connected in sequence. The spray gun includes a gun body 12, a nozzle 13 and an air inlet end 14. The nozzle 13 and the air inlet end 14 are respectively arranged at both ends of the gun body 12. The nozzle 13 is used to spray the mixture 15 onto the inner surface of the exchange membrane 2.

[0052] The basic principle of the ice powder mixed hydrogen production equipment is as follows: ice powder is a solid form of liquid water, also composed of H2O. In the related technology of electrocatalytic decomposition of liquid water to produce hydrogen, liquid water is in direct contact with the electrode, and undergoes electrochemical reaction with the active sites of the catalyst powder, releasing hydrogen and oxygen at the cathode and anode respectively; in contrast, although ice powder is a solid form of water, under the action of external shear force, ice can quickly undergo local melting and be converted back into liquid water. In this process, when the ice powder melts, it can also wrap the catalyst powder mixed in it in advance to form a liquid water droplet-catalyst powder mixed system. When this system adheres to the surface of the exchange membrane 2 of the cathode and anode, the basic reaction conditions for the electrocatalytic decomposition of liquid water are met. At this time, when the DC power supply 4 is turned on, the electrocatalytic decomposition of the ice powder to produce hydrogen can be realized.

[0053] Based on the basic principle of the ice powder mixed hydrogen production equipment, the working process of the ice powder mixed hydrogen production equipment can be designed: first, the solid ice naturally existing in frozen lakes, ponds and rivers is directly ground under low temperature conditions to prepare solid ice powder; then, the ice powder is directly physically stirred with catalyst powder (such as iron-nickel alloy powder) to form a mixture 15, and is loaded into a hollow cylinder 9 (which can be a hollow metal or organic glass cylinder) and appropriately compacted; then, the hollow cylinder 9 filled with ice powder is fixed to the middle top of the rectangular or cube box frame 1 and The pressure output component 8 on the outside of the box frame 1 outputs mechanical force, and the mixture 15 of ice powder and catalyst powder is slowly pushed downward from the top of the hollow cylinder 9 filled with ice powder. At this time, the high-speed rotating grinding wheel 7 located just below the hollow cylinder 9 quickly shears and grinds the mixture 15. Under the high-speed shear force of the grinding wheel 7, the ice powder will be instantly broken and melted. The huge centrifugal force generated by the high-speed rotating grinding wheel 7 will throw the melted ice powder to the surroundings inside the box frame 1. The rectangular proton or anion exchange membrane 2 is laid around the box frame 1 to grind the mixture 15. After the ice powder melts, the catalyst powder is wrapped inside. After being thrown out by the high-speed rotating grinding wheel 7, it adheres to the surface of the exchange membrane 2 under the adhesion of the low-temperature water droplets. At this time, the water droplets wrapped with the catalyst powder have the basic reaction conditions required for the electrocatalytic reaction to occur. In addition, a powder spraying device is used on the outside of the exchange membrane 2 to spray a mixture of ice powder and catalyst powder 15 onto the outer surface of the exchange membrane 2 at a high speed synchronously with the high-speed rotation process of the grinding wheel 7. Similar to the working principle of the grinding wheel 7, the ice powder will also be quickly sprayed by the high-speed spraying of the powder spraying device. A melting process occurs, and the catalyst powder is wrapped in the form of liquid water droplets and adhered to the outer surface of the exchange membrane 2; finally, the wire 3 on the inner surface of the exchange membrane 2 is connected to the negative electrode of the DC power supply 4, and the wire 3 on the outer surface of the exchange membrane 2 is connected to the positive electrode of the DC power supply 4. At this time, under the action of a suitable direct voltage, an electrocatalytic reaction will rapidly occur on both sides of the exchange membrane 2, and the liquid water coated on the inner surface of the exchange membrane 2 will be electrolyzed into hydrogen, and the liquid water on the outer surface of the exchange membrane 2 will be electrolyzed into oxygen, ultimately realizing the electrocatalytic decomposition of solid ice to produce hydrogen.

[0054] Based on the same technical concept, this embodiment also provides an ice powder mixed shear melting hydrogen production method, the ice powder mixed shear melting hydrogen production method adopts the above-mentioned ice powder mixed shear melting hydrogen production equipment, the method comprises the following steps:

[0055] 1) Grinding solid ice naturally existing in nature into ice powder by an ice grinding machine, and physically stirring and mixing the ice powder with catalyst powder to prepare a mixture of ice powder and catalyst powder 15.

[0056] 2) The mixture 15 of ice powder and catalyst powder formed by water is loaded into the pressure conveying device and the powder spraying device.

[0057] Specifically, the mixture 15 is loaded into the hollow cylinder 9 and compacted as much as possible by physical means; the hollow cylinder 9 filled with the mixture 15 is installed on the top of the box frame 1 and physically fixed; the numerically controlled pressure output component 8 is installed and fixed on the top of the hollow cylinder 9.

[0058] The mixture 15 is placed into the funnel 10, and the air inlet end 14 of the spray gun is connected to a low-pressure air source (<1.2 MPa).

[0059] 3) Start the DC power supply 4.

[0060] Of course, before starting the DC power supply 4, the assembly of the ice powder mixed hydrogen production equipment needs to be completed. First, the wires 3 are laid on the two side surfaces of the exchange membrane 2 respectively, and the wires 3 are fixed on the exchange membrane 2; then, the exchange membrane 2 with the wires 3 laid is arranged around the box frame 1, so that the box frame 1 forms an internal space and an external space that are isolated from each other; finally, the wires 3 on the inner surface of the exchange membrane 2 are connected to the negative electrode of the DC power supply 4, and the wires 3 on the outer surface of the exchange membrane 2 are connected to the positive electrode of the DC power supply 4. Among them, the motor 5, the transmission shaft 6 and the grinding wheel 7 need to be connected and fixed.

[0061] After starting the DC power supply 4, the positive and negative electrodes of the DC power supply 4 are connected to the two sides of the exchange membrane 2 respectively. Since the exchange membrane 2 is an insulator, when there is no liquid water or solution on both sides of the exchange membrane 2, no current flows through the two sides of the exchange membrane 2.

[0062] 4) The pressure conveying device is used to convey the mixture 15 to the rotating device, and the rotating device is used to shear and melt the mixture 15 and throw it to the inner surface of the exchange membrane 2, so that a cathode electrocatalytic reaction occurs to produce hydrogen.

[0063] Specifically, the high-speed motor 5 is started, and the grinding wheel 7 and the motor 5 are synchronously rotated at a high speed under the driving action of the transmission shaft 6. The pressure conveying device is started and the mixture 15 in the hollow cylinder 9 is pressed down at a preset rate, so that the mixture 15 in the hollow cylinder 9 is conveyed to the grinding wheel 7 of the rotating device. When the mixture 15 moves to the surface of the grinding wheel 7, the grinding wheel 7 quickly shears and melts the mixture 15 slowly leaking from the hollow cylinder 9 under the driving action of the motor 5, and the sheared and melted ice powder is quickly thrown to the inner surface of the exchange membrane 2 around it through the huge centrifugal force generated during the rapid rotation of the grinding wheel 7. Among them, the mixture 15 formed under the shearing and melting action of the grinding wheel 7 will become a water film 16, which is evenly spread on the inner surface of the exchange membrane 2 around the box frame 1. Under the action of a certain DC voltage output by the positive and negative electrodes of the DC power supply 4, the water film 16 formed by the mixture 15 quickly undergoes an electrochemical reaction, and reacts on the cathode side of the exchange membrane 2 to release hydrogen.

[0064] 5) The mixture 15 is sprayed onto the outer surface of the exchange membrane 2 by using the powder spraying device, so that an anode electrocatalytic reaction occurs to produce oxygen.

[0065] Specifically, the mixture 15 is quickly sprayed onto the outer surface of the exchange membrane 2 fixed around the box frame 1 through the conduit 11 and the flat nozzle 13. It should be noted that in order to make the structural diagram shown in this embodiment more concise, Figure 1 The operation of the powder spraying device spraying from one side is only schematically shown, but in actual operation, multiple powder spraying devices are required to quickly and evenly spray the mixture 15 on all sides of the box frame 1. The mixture 15 will also quickly melt under the high-speed spraying action of the powder spraying device, and evenly spread on the outer surface of the exchange membrane 2 around the box frame 1 in the form of a water film 16. The water film 16 quickly undergoes an electrochemical reaction, reacting on the anode side of the exchange membrane 2 to release oxygen.

[0066] 6) Extract the hydrogen inside the box and store it; discharge the oxygen outside the box into the atmosphere.

[0067] Specifically, the device and method proposed in this embodiment are essentially electrocatalytic decomposition of liquid water, so that green hydrogen with high purity can be finally obtained. Since the cathode side of the exchange membrane 2 is completely enclosed in the box frame 1, and the anode side is completely distributed outside the box frame 1, the hydrogen produced by the reaction can be directly and efficiently separated from the oxygen through the isolation effect of the box frame 1. For example, a gas pipe is connected to the box frame 1 to directly collect and store the hydrogen released by the electrolysis reaction; the direct current anode decomposition reaction occurs on the surface of the exchange membrane 2 outside the box frame 1, and finally a high concentration of oxygen can be obtained, which can be directly discharged into the atmosphere without causing secondary pollution.

[0068] The ice powder mixed shear melting hydrogen production equipment and method provided in this embodiment have the following beneficial effects:

[0069] In all current water electrolysis hydrogen production technologies, the catalyst powder needs to be coated on the porous electrode material during use, so the amount of catalyst powder used in the electrolysis reaction will be limited by the porous structure and quantity of the electrode material. In addition, the catalyst powder needs to sacrifice a part of its volume during the coating process for anchoring and connection with the electrode material. Based on the above two reasons, in the traditional water electrolysis reaction technology, the amount of catalyst powder used and the effective use volume will be limited, and the unlimited use of catalyst powder cannot be achieved. The equipment and method proposed in this embodiment can completely solve this dilemma, realize the unlimited proportion of ice powder and catalyst powder directly mixed, and the catalyst powder and ice powder can be directly physically mixed in any proportion, thereby greatly increasing the amount of catalyst powder used and improving the efficiency of hydrogen production by electrolysis. In addition, the catalyst powder is directly and simply mixed with ice powder in the process of use, avoiding the complex operation of using impregnation, deposition, physical adsorption, ion exchange and other methods to coat the catalyst powder on the cathode and anode materials, greatly simplifying the catalyst use procedure and improving its economy during use.

[0070] The ice powder mixed shear melting hydrogen production equipment proposed in this embodiment can be unlimitedly replicated and expanded in series from a single set of equipment to form a large-scale ice powder-catalyst powder mixed shear melting rapid green hydrogen production equipment system. The series connection scheme is not limited by the number of sets, thereby maximizing the green hydrogen production efficiency and its commercial value.

[0071] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0072] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An ice powder mixing shear melting hydrogen production equipment, characterized in that: The ice powder mixed hydrogen production equipment comprises a box frame (1), an exchange membrane (2), a conductor (3), a DC power supply (4), a pressure conveying device, a rotating device and a powder spraying device; The exchange membrane (2) is arranged around the box frame (1) so that the box frame (1) forms an inner space and an outer space that are isolated from each other. The wires (3) are laid on the two side surfaces of the exchange membrane (2), the negative electrode of the DC power supply (4) is connected to the wire (3) on the outer surface of the exchange membrane (2), and the positive electrode of the DC power supply (4) is connected to the wire (3) on the inner surface of the exchange membrane (2); The rotating device is arranged below the middle of the box frame (1), and the pressure conveying device is arranged above the middle of the box frame (1). The pressure conveying device is used to squeeze a mixture (15) of ice powder and catalyst powder formed by water onto the rotating device. The rotating device is used to shear and melt the mixture (15) and throw it onto the inner surface of the exchange membrane (2), and a cathode electrocatalytic reaction occurs to produce hydrogen. The powder spraying device is arranged outside the box frame (1), and is used to spray the mixture (15) onto the outer surface of the exchange membrane (2), and to generate an anode electrocatalytic reaction to produce oxygen.

2. The ice powder mixing shear melting hydrogen production equipment according to claim 1, characterized in that: The rotating device comprises a motor (5), a transmission shaft (6) and a grinding wheel (7) which are connected in sequence from bottom to top. The grinding wheel (7) is used to receive the mixture (15) transmitted by the pressure conveying device, and then shear and melt the mixture (15) and throw it onto the inner surface of the exchange membrane (2).

3. The ice powder mixing shear melting hydrogen production equipment according to claim 1, characterized in that: The pressure delivery device comprises a pressure output component (8) and a hollow cylinder (9) which are connected in sequence from bottom to top, and the hollow cylinder (9) is vertically arranged directly above the rotating device.

4. The ice powder mixing shear melting hydrogen production equipment according to claim 1, characterized in that: The powder spraying device comprises a funnel (10), a conduit (11) and a spray gun which are connected in sequence, the spray gun comprises a gun body (12), a nozzle (13) and an air inlet end (14), the nozzle (13) and the air inlet end (14) are respectively arranged at two ends of the gun body (12), and the nozzle (13) is used to spray the mixture (15) onto the inner surface of the exchange membrane (2).

5. A method for producing hydrogen by mixing ice powder and shear melting, characterized in that: The ice powder mixed shear melting hydrogen production method adopts the ice powder mixed shear melting hydrogen production equipment according to claim 1, and the method comprises: S1: loading a mixture (15) of ice powder formed by water and catalyst powder into a pressure conveying device and a powder spraying device; S2: starting the DC power supply (4); using the pressure conveying device to convey the mixture (15) to the rotating device, using the rotating device to shear and melt the mixture (15) and throw it to the inner surface of the exchange membrane (2), so that a cathode electrocatalytic reaction occurs to produce hydrogen; using the powder spraying device to spray the mixture (15) onto the outer surface of the exchange membrane (2), so that an anode electrocatalytic reaction occurs to produce oxygen.

6. The method for producing hydrogen by mixing ice powder and shearing and melting according to claim 5, characterized in that: Before S1, the method further includes: Solid ice naturally existing in nature is ground into ice powder by an ice grinder, and the ice powder is physically stirred and mixed with catalyst powder to prepare a mixture of ice powder and catalyst powder (15).

7. The method for producing hydrogen by mixing ice powder and shearing and melting according to claim 5, characterized in that: Before S2, the method further includes: Conductors (3) are laid on the surfaces of both sides of the exchange membrane (2) respectively, and the conductors (3) are fixed on the exchange membrane (2); The exchange membrane (2) on which the conductive wire (3) is laid is arranged around the box frame (1), so that the box frame (1) forms an inner space and an outer space which are isolated from each other; The wire (3) on the inner surface of the exchange membrane (2) is connected to the negative electrode of a DC power source (4), and the wire (3) on the outer surface of the exchange membrane (2) is connected to the positive electrode of a DC power source (4).

8. The method for producing hydrogen by mixing ice powder and shearing and melting according to claim 5, characterized in that S2 include: Starting the rotating device; The pressure delivery device is started to deliver the mixture (15) to the rotating device at a preset rate.

9. The method for producing hydrogen by mixing ice powder and shearing and melting according to claim 5, characterized in that S2 include: The mixture (15) is evenly sprayed onto the exchange membrane (2) around the box using a plurality of the powder spraying devices.

10. The method for producing hydrogen by mixing ice powder and shear melting according to claim 5, characterized in that: After S2, the method includes: S3: Extract the hydrogen inside the box and store it; discharge the oxygen outside the box into the atmosphere.

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