A safe and adjustable water injection type hydrogen production tank and a use method thereof

Abstract

The present application relates to the field of energy storage, in particular to the field of hydrogen storage technology. The present application provides a portable, safe and adjustable water injection type hydrogen production tank. After water injection, the hydrogen can be prepared by opening the adjusting switch. The present application is achieved by the following means: a portable, safe and adjustable water injection type hydrogen production tank, comprising a vinyl chloride tank body, which is a cylinder body with an open upper end and a closed lower end. An upper cover is arranged at the open upper end of the tank body to close the open upper end. A cylindrical conductive metal nickel lining is arranged in the tank body, which has an open upper end and a closed lower end. A through hole is arranged at the center of the closed lower end of the cylindrical lining. The present application is easy to operate. The controlled preparation of hydrogen can be achieved by additionally injecting water into the safe and adjustable water injection type hydrogen production tank. No external electric field is required during the preparation of hydrogen, and no heating is required.

Description

Technical Field

[0001] This invention relates to the field of energy storage, and particularly to a hydrogen storage technology. Background Technology

[0002] Hydrogen energy, due to its abundant reserves, high calorific value, good combustion performance, and environmental friendliness, has become a recognized clean and renewable energy source, applicable to direct combustion power, home fuel cells, and fuel cell vehicles. Furthermore, hydrogen is also an important industrial raw material in the petrochemical industry. Hydrogen is primarily produced through the reforming of fossil fuels such as coal and natural gas, the production of hydrogen from industrial by-products, and water electrolysis. However, the reforming of fossil fuels and the production of hydrogen from industrial by-products often require large-scale equipment; after production, hydrogen typically needs high-pressure storage, placing high demands on hydrogen storage equipment and posing safety risks. The on-demand, controllable production of hydrogen is a highly safe solution.

[0003] Water electrolysis is a very convenient method for producing hydrogen, enabling small-scale, portable, and controllable hydrogen production. During water electrolysis, a direct current is passed through an electrolytic cell filled with electrolyte. Water molecules undergo electrochemical reactions at the electrodes, generating oxygen and hydrogen at the anode and cathode, respectively. Traditional water electrolysis methods include alkaline water electrolysis, polymer proton exchange membrane water electrolysis, and high-temperature oxide water electrolysis. However, water electrolysis requires an external electric field, and the electrolytic cell typically demands high-quality materials. Furthermore, while hydrogen storage materials can release hydrogen without an external electric field, the release process requires heating, and the preparation of hydrogen storage materials is often complex and costly. Summary of the Invention

[0004] In view of this, the present invention proposes a portable, safe, and adjustable water-filled hydrogen production tank, which can produce hydrogen by opening an adjustment switch after water is added. The objective of the present invention is achieved through the following means:

[0005] A portable, safe, and adjustable water-filled hydrogen production tank includes a vinyl chloride tank body, which is a cylindrical body with an open top and a closed bottom. A top cover is provided at the open top of the tank body for sealing the open top. A cylindrical conductive nickel liner with an open top and a closed bottom is provided inside the tank body. A through hole is provided at the center of the closed bottom of the cylindrical liner.

[0006] A cylindrical insulating porous cover with an open top and a closed bottom is provided inside the lining. A large through hole is provided at the center of the closed bottom of the insulating porous cover, and eight small through holes are evenly distributed around it.

[0007] A spiral zinc strip is installed inside an insulating porous cover, and solid potassium hydroxide is contained inside the tank.

[0008] The upper cover is provided with an air outlet, a water injection hole, and a potentiometer switch hole; the water injection hole at the top of the upper cover is provided with an internal thread, and a bolt with an external thread is screwed into the water injection hole; a valve is provided at the air outlet at the top of the upper cover; a potentiometer switch is provided in the potentiometer switch hole of the upper cover; a copper first electrical conductor sheet is provided vertically downward at the bottom of the upper cover, and the first electrical conductor sheet is attached to the cylindrical inner lining; a copper electrical conductor fixing seat is provided at the bottom of the upper cover, and the upper end of the metal zinc strip is fixedly connected to the electrical conductor fixing seat.

[0009] One of the switch pins on the potentiometer switch is electrically connected to a first copper conductor, and the other switch pin is connected to a functional pin via a third copper conductor. The common pin is electrically connected to a copper conductor holder via a second copper conductor. The gas outlet is connected to an external gas collection container or hydrogen usage device via a valve.

[0010] A safety valve hole is provided on the upper cover, and a safety valve is installed in the safety valve hole.

[0011] The liner that is attached to the first electrical conductor sheet and the zinc strip fixed on the electrical conductor mounting base are connected or disconnected by a potentiometer switch, and the gas flow rate can also be adjusted by this potentiometer switch.

[0012] A protrusion is provided on the bottom surface of the tank body. The protrusion extends into the insulating porous cover through the lower sealed end of the inner lining and the lower sealed end of the insulating porous cover. The lower end of the zinc strip is fixedly connected to the protrusion, abuts against it, or leaves a gap between them.

[0013] Instructions for use of the portable, safe, adjustable water-filled hydrogen production tank:

[0014] First, add water into the tank through the water inlet. After water filling, tighten the water inlet bolt or close the water inlet valve. After the water dissolves the alkaline solid, open the gas outlet valve and turn the potentiometer switch to make the lining and the zinc strip conductive, thus generating hydrogen gas in the tank. Collect the hydrogen gas through the gas outlet or connect it to the gas consumption end.

[0015] Beneficial effects of the present invention

[0016] 1. This invention is easy to operate; simply adding water to a safe, adjustable water-filled hydrogen production tank enables controllable hydrogen production. No external electric field or heating is required during the hydrogen production process.

[0017] 2. It is safe and reliable during transport and storage, has a simple structure, and is easy to maintain.

[0018] 3. The hydrogen production rate can be adjusted via a potentiometer switch to meet the needs of users in different scenarios. Attached Figure Description

[0019] Figure 1Schematic diagram of a safe, adjustable water-filled hydrogen production tank;

[0020] Figure 2 A schematic diagram of the decomposition process for a safe, adjustable water-filled hydrogen production tank;

[0021] Figure 3 External schematic diagram of the adjustable water-filled hydrogen production tank cover for safety;

[0022] Figure 4 External schematic diagram of the adjustable water-filled hydrogen production tank cover for safety;

[0023] Figure 5 A schematic diagram of the interior of the adjustable water-filled hydrogen production tank cover for safety.

[0024] Figure 6 Schematic diagram of the inner lining of a safe, adjustable water-filled hydrogen production tank;

[0025] Figure 7 Schematic diagram of a safe, adjustable water-filled hydrogen production tank;

[0026] Figure 8 A schematic diagram of the shape of the built-in metallic zinc in the safe and adjustable water-injection hydrogen generator;

[0027] Figure 9 Schematic diagram of a safe, adjustable, water-filled, hydrogen-generating, insulating porous cover;

[0028] In the diagram: 1-Top cover, 2-Metallic zinc, 3-Insulating porous cover, 4-Inner liner, 5-Tank body, 6-Potential switch, 7-Gas outlet valve, 8-Water inlet bolt, 9-Safety valve, 10-First conductor piece, 11-Second conductor piece, 12-Third conductor piece, 13-Conductor fixing seat, 101-Potential switch hole, 102-Gas outlet valve hole, 103-Water inlet hole, 104-Safety valve hole, 501-Protrusion. Detailed Implementation

[0029] A safe and adjustable water-filled hydrogen production tank includes a polyvinyl chloride (PVC) tank body. The tank body is a cylindrical structure with an open top and a sealed bottom, with an inner diameter of 80 mm, an outer diameter of 100 mm, and an internal cavity height of 195 mm. The sealed lower portion of the tank body is 5 mm thick and has a cylindrical protrusion at its center, with a height of 25 mm and a diameter of 17 mm. The open top end of the tank body has external threads for tightening a threaded top cover. The tank body contains a cylindrical liner with an open top and a sealed bottom, with an outer diameter of 79.5 mm and a height of 190 mm. The sealed lower portion has a through-hole with a diameter of 18 mm at its center. The protrusion of the tank body passes through the through-hole at the lower end of the liner.

[0030] The top cover is a cylinder with an inner diameter of 80mm and an outer diameter of 100mm. It is sealed at the top and open at the bottom, with internal threads at the bottom opening. The top cover also has internal threads for sealing the connection with the tank body. The sealed end of the top cover has four through holes. A potentiometer switch is installed in the central through hole of the sealed portion. The surrounding through holes are used to install the vent valve, safety valve, and water inlet bolts, respectively. A copper conductor holder inside the cover secures a spiral zinc strip. One of the switch feet of the potentiometer switch (WH138, Foshan Nanhai Xiangchao Electronic Assembly and Processing Plant) is electrically connected to the first copper conductor piece, which adheres to the inner lining after the top cover is tightened. The other switch foot of the potentiometer switch is connected to one of the functional feet via a third copper conductor piece. The common foot is electrically connected to the copper conductor holder via a second copper conductor piece. The vent is connected to an external gas collection container via a valve.

[0031] A second copper conductor is connected to a terminal of the potentiometer switch. A first conductor is vertically positioned downwards on the lower part of the top cover, through which the other terminal of the potentiometer switch passes. The zinc alloy has a diameter of 5mm, is wound into a spiral shape with an outer diameter of 60mm, and a total length of 50cm.

[0032] The inner liner is equipped with a cylindrical polyvinyl chloride insulating porous cover that is open at the top and closed at the bottom. A through hole with a diameter of 18mm is provided at the center of the closed end of the insulating porous cover. The cylindrical insulating porous cover is 1mm thick, has an inner diameter of 60mm, and a height of 180mm.

[0033] Example 1

[0034] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a 1mm thick nickel liner. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch, and adjust it to a fully connected state; at this point, the hydrogen production rate will be greater than 50mL / h. Turn off the potentiometer switch; the hydrogen production rate will then be less than 50mL / h.

[0035] Example 2

[0036] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a platinum liner with a thickness of 0.4mm. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch, and adjust it to a fully connected state. At this point, the hydrogen production rate is greater than 50mL / h. Turn off the potentiometer switch; the hydrogen production rate will then be less than 50mL / h.

[0037] Example 3

[0038] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a 2mm thick nickel foam liner. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch, and adjust it to a fully connected state; at this point, the hydrogen production rate will be greater than 50mL / h. Turn off the potentiometer switch; the hydrogen production rate will then be less than 50mL / h.

[0039] Comparative Example 1

[0040] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a 1mm thick copper liner. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch and adjust it to a fully connected state; the hydrogen production rate should be less than 50mL / h.

[0041] Comparative Example 2

[0042] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a 1mm thick tin liner. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch and adjust it to a fully connected state; the hydrogen production rate should be less than 50mL / h.

[0043] Comparative Example 3

[0044] Pre-fill with 100g of potassium hydroxide, tighten the top cap, and use a 1mm thick lead liner. Before use, add 500mL of water, tighten the water filler screw, and dissolve the potassium hydroxide in water for 10 minutes. Open the outlet valve, turn on the potentiometer switch and adjust it to a fully connected state; the hydrogen production rate should be less than 50mL / h.

[0045] Comparative Example 4

[0046] Without adding potassium hydroxide, tighten the top cap and use a lead liner with a thickness of 1 mm. Add 500 mL of water before use, tighten the water injection bolt, and let stand for 10 minutes. Open the outlet valve, turn on the potentiometer switch and adjust it to a fully connected state; the hydrogen production rate should be less than 50 mL / h.

[0047] Comparative Example 5

[0048] Add 100 mL of concentrated hydrochloric acid, tighten the top cap, and use a lead liner with a thickness of 1 mm. Before use, add 500 mL of water, tighten the water injection bolt, and let stand for 10 minutes. Open the gas outlet valve, adjust the potentiometer to the non-conductive state, and ensure the hydrogen production rate is greater than 50 mL / h. Hydrogen production cannot be stopped by the potentiometer.

[0049] As can be seen from Examples 1-3 above, the present invention can achieve rapid hydrogen production by using either a nickel or platinum liner. However, by replacing the liner material with copper, tin, or lead in Comparative Examples 1-3, rapid hydrogen production could not be achieved. Comparative Example 4 shows that even when only water is added to the tank, rapid hydrogen production is still not achievable. In Comparative Example 5, when a large amount of hydrochloric acid is added to the tank, hydrogen production becomes uncontrollable. Therefore, the use of an alkaline solution is essential in this invention.

Claims

1. A safe and adjustable water-filled hydrogen production tank, comprising a tank body, wherein the tank body is a cylindrical body with an open top and a closed bottom, a top cover for sealing the top opening is provided at the top opening end of the tank body, a cylindrical conductive liner with an open top and a closed bottom is provided inside the tank body, and a through hole is provided at the center of the closed bottom end of the cylindrical liner. The lining material includes one or both of metallic nickel sheets and nickel foam. A cylindrical insulating porous cover with an open top and a closed bottom is provided inside the lining. A large through hole is provided at the center of the closed bottom of the insulating porous cover, and eight small through holes are evenly distributed around it. A zinc strip is installed inside an insulating porous cover, and a water-soluble alkaline solid is contained inside the tank. The water-soluble alkaline solid includes one or more of sodium hydroxide, lithium hydroxide, or potassium hydroxide; The zinc strip is a spiral-shaped zinc strip; A protrusion is provided on the bottom surface of the tank body. The protrusion extends into the insulating porous cover through the lower sealed end of the inner lining and the lower sealed end of the insulating porous cover. The lower end of the zinc strip is fixedly connected to the protrusion, abuts against it, or leaves a gap between them. The upper cover is provided with an air outlet, a water injection hole, and a potentiometer switch hole; a valve is provided at the water injection hole at the upper part of the upper cover, or an internal thread is provided in the water injection hole and a bolt with an external thread is screwed into the water injection hole; a valve is provided at the air outlet at the upper part of the upper cover; a potentiometer switch is provided in the potentiometer switch hole of the upper cover; a first electrical conductor sheet is provided vertically downward at the lower part of the upper cover, and the first electrical conductor sheet is attached to the cylindrical inner liner; an electrical conductor fixing seat is provided at the lower part of the upper cover, and the upper end of the metal zinc strip is fixedly connected to the electrical conductor fixing seat; One of the switch pins on the potentiometer switch is electrically connected to the first conductor plate, and the other switch pin is connected to a functional pin of the potentiometer switch through the third conductor plate. The common pin of the potentiometer switch is electrically connected to the conductor mounting base through the second conductor plate. The liner that is attached to the first electrical conductor sheet and the zinc strip fixed on the electrical conductor mounting base are connected or disconnected by a potentiometer switch, or the gas flow rate is adjusted by this potentiometer switch. Instructions for using the hydrogen production tank: First, add water into the tank through the water inlet. After water filling, tighten the water inlet bolt or close the water inlet valve. After the water dissolves the alkaline solid, open the gas outlet valve and turn the potentiometer switch to make the lining and the zinc strip conductive, thus generating hydrogen gas in the tank. Collect the hydrogen gas through the gas outlet or connect it to the gas consumption end.

2. The hydrogen production tank according to claim 1, characterized in that: The water inlet is connected to an external water source via a valve. The outlet is connected to an external gas collection container or hydrogen usage device via a valve; A safety valve hole is provided on the upper cover, and a safety valve is installed in the safety valve hole.

3. The hydrogen production tank according to claim 1, characterized in that: The tank body and the top cover are made of one or more of the following materials: polyethylene, polypropylene, polyvinyl chloride, and nylon. The electrical conductor sheet and the electrical conductor fixing base are made of one or more of copper, silver, and lead. The water-soluble alkaline solid is potassium hydroxide.

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