Mine water electrolysis hydrogen production device

Abstract

The utility model relates to a mine water electrolysis hydrogen production device, which belongs to the technical field of electrolysis hydrogen production devices, and comprises a reservoir, a heating tank, an alkali liquor box, an electrolytic bath, a heater, a first filter membrane and a second filter membrane, and outlets and inlets of the reservoir, the heating tank, the alkali liquor box and the electrolytic bath are sequentially communicated in series; the heater is fixed on the heating tank to heat mine water in the heating tank; the first filter membrane is fixed in a first connecting pipe between the outlet of the reservoir and the inlet of the heating tank; and the second filter membrane is fixed in the first connecting pipe between the outlet of the heating tank and the inlet of the alkali liquor box. According to the device, mine water purification and water electrolysis hydrogen production are ingeniously combined into a whole, mine water vapor heated and evaporated in the heating tank is mixed with alkali liquor in the alkali liquor box to form high-temperature electrolyte, secondary heating of the electrolyte can be avoided, and the electrolytic hydrogen production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic hydrogen production devices, in particular to a mine water electrolytic hydrogen production device. Background Art

[0002] Coal mining produces a large amount of mine water. If this water is not properly treated, it will not only cause serious damage to the environment but also waste the potential resources contained in it.

[0003] To address the challenges of mine water treatment and recover the chemical energy rich in it, research has emerged on using mine water electrolysis to produce hydrogen. However, mine water has a complex and diverse composition, containing a variety of minerals and impurities. Purification is required before hydrogen can be produced through electrolysis. This purification requires the construction of a desalination and purification plant, which significantly increases construction, operation, labor, and maintenance costs.

[0004] Therefore, how to design a mine water electrolysis hydrogen production device with simple structure, low cost and high hydrogen production efficiency is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] The utility model provides a mine water electrolysis hydrogen production device, which solves the technical problem of high preparation cost of existing mine water electrolysis hydrogen production devices.

[0006] The utility model solves the above technical problems with the following technical solutions: a mine water electrolysis hydrogen production device, comprising: a water reservoir, a heating tank, an alkali liquid tank, an electrolytic cell, a heater, a first filter membrane and a second filter membrane,

[0007] The outlet and inlet of the water reservoir, the heating tank, the alkali liquid tank and the electrolytic cell are connected in series in sequence through a first connecting pipe; the water reservoir is filled with mine water and its level is higher than the horizontal positions of the heating tank, the alkali liquid tank and the electrolytic cell; the heater is fixed on the heating tank to heat the mine water in the heating tank; the first filter membrane is fixed in the first connecting pipe between the outlet of the water reservoir and the inlet of the heating tank; the second filter membrane is fixed in the first connecting pipe between the outlet of the heating tank and the inlet of the alkali liquid tank.

[0008] The beneficial effects of this utility model are as follows: it cleverly combines mine water purification and electrolytic water hydrogen production into one. First, the height advantage of the water reservoir is used to provide flow power for the mine water, which can reduce water power equipment and reduce the preparation cost of the electrolytic hydrogen production device. Then, the first filter membrane and the second filter membrane are used to filter solid impurities and soluble impurities in the mine water, thereby improving the purification efficiency and purification effect of the mine water. Finally, the water vapor heated and evaporated in the heating tank is mixed with the alkali solution in the alkali solution tank to form a higher temperature (90°C) electrolyte, which can avoid secondary heating of the electrolyte, increase the electrolyte temperature, and improve the efficiency of electrolytic hydrogen production.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the outlet of the electrolytic cell is connected to the alkali liquid tank through a second connecting pipe, and the second connecting pipe is provided with a gas outlet hole.

[0011] Furthermore, the first filter membrane is a forward osmosis membrane, which comprises a support layer, an intermediate layer and an active layer bonded together in sequence;

[0012] The support layer of the forward osmosis membrane provides physical support for the entire membrane, ensuring that the forward osmosis membrane can withstand a certain amount of pressure without breaking in the complex environment of filtering mine water. At the same time, it also provides a water flow channel, allowing the mine water to smoothly pass through the bottom layer of the membrane and flow to the active layer for filtration;

[0013] The middle layer of the forward osmosis membrane is made of a special material called polysulfone, which enhances the bonding force between the support layer and the active layer of the forward osmosis membrane. Due to the complex composition of mine water, the forward osmosis membrane will be affected by various chemical and physical factors during the filtration process. The middle layer of the forward osmosis membrane can ensure a stronger connection between the support layer and the active layer, preventing the forward osmosis membrane from delamination during use. At the same time, it regulates water flow and material transfer, and regulates water flow to make the water more evenly distributed before reaching the active layer, thereby improving filtration efficiency.

[0014] The active layer of the forward osmosis membrane: made of polyamide material, can achieve selective separation of different substances in mine water.

[0015] Furthermore, the second filter membrane is a phase change migration membrane, and the phase change migration membrane includes a support layer, an intermediate layer and an active layer bonded together in sequence;

[0016] Phase change migration membrane heating support layer: Made of porous polyester material, it provides mechanical support for the membrane, ensuring that the membrane maintains a stable shape during use and prevents rupture or deformation due to pressure and other factors. At the same time, its porous structure allows water vapor to pass through, playing the role of water vapor transmission;

[0017] The middle layer of the phase change migration membrane can enhance the bonding strength between the support layer and other layers, or regulate the transmission of water vapor to make the transmission of water vapor more uniform and stable;

[0018] The active layer of the phase change migration membrane is made of a polymer material with special properties. It can selectively adsorb or permeate water vapor based on the differences in physical or chemical properties between water vapor and other substances, preventing other gas or liquid molecules from passing through. When environmental conditions change (such as temperature, pressure, etc.), the water vapor in the active layer will undergo a phase change, thereby realizing the migration of water vapor.

[0019] Furthermore, the bonding force between the supporting layer and the active layer is enhanced. The bottom surface of the heating tank is provided with a slag discharge hole for discharging solid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a mine water electrolysis hydrogen production device of the utility model;

[0021] Figure 2 This is a schematic structural diagram of the first filter membrane in a mine water electrolysis hydrogen production device of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the second filter membrane in a mine water electrolysis hydrogen production device of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Water reservoir, 2. Heating tank, 21. Slag discharge hole, 3. Alkali liquid tank, 4. Electrolytic cell, 5. Heater, 6. First filter membrane, 7. Second filter membrane, 8. Gas outlet hole. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] like Figure 1 As shown, a mine water electrolysis hydrogen production device includes: a water reservoir 1, a heating tank 2, an alkali liquid tank 3, an electrolytic cell 4, a heater 5, a first filter membrane 6 and a second filter membrane 7.

[0027] The outlets and inlets of the water reservoir 1, the heating tank 2, the alkali liquid tank 3 and the electrolytic cell 4 are connected in series in sequence through a first connecting pipe; the water reservoir 1 is filled with mine water and its level is higher than the horizontal positions of the heating tank 2, the alkali liquid tank 3 and the electrolytic cell 4; the heater 5 is fixed on the heating tank 2 to heat the mine water in the heating tank 2; the first filter membrane 6 is fixed in the first connecting pipe between the outlet of the water reservoir 1 and the inlet of the heating tank 2; the second filter membrane 7 is fixed in the first connecting pipe between the outlet of the heating tank 2 and the inlet of the alkali liquid tank 3.

[0028] In some specific embodiments, the outlet of the electrolytic cell 4 is connected to the alkali liquid tank 3 through a second connecting pipe, and the second connecting pipe is provided with a gas outlet 8.

[0029] In some specific embodiments, the first filter membrane 6 is a forward osmosis membrane.

[0030] In some specific embodiments, the second filter membrane 7 is a phase change migration membrane.

[0031] Specifically, the forward osmosis membrane and the phase change migration membrane have the same structure, both including a support layer, an intermediate layer and an active layer bonded together in sequence. Among them, the active layer of the forward osmosis membrane can realize the selective separation of different substances in mine water; water vapor undergoes phase change in the active layer of the phase change migration membrane.

[0032] Specifically, the bottom surface of the heating tank 2 is provided with a slag discharge hole 21 for discharging solid waste.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A mine water electrolysis hydrogen production device, characterized in that: include: A water reservoir (1), a heating tank (2), an alkali liquid tank (3), an electrolytic cell (4), a heater (5), a first filter membrane (6) and a second filter membrane (7), The outlets and inlets of the water reservoir (1), the heating tank (2), the alkali liquid tank (3) and the electrolytic cell (4) are sequentially connected in series through a first connecting pipe; the water reservoir (1) contains mine water and its level is higher than the horizontal positions of the heating tank (2), the alkali liquid tank (3) and the electrolytic cell (4); the heater (5) is fixed on the heating tank (2) to heat the mine water in the heating tank (2); the first filter membrane (6) is fixed in the first connecting pipe between the outlet of the water reservoir (1) and the inlet of the heating tank (2); and the second filter membrane (7) is fixed in the first connecting pipe between the outlet of the heating tank (2) and the inlet of the alkali liquid tank (3).

2. A mine water electrolysis hydrogen production device according to claim 1, characterized in that: The outlet of the electrolytic cell (4) is connected to the alkali liquid tank (3) via a second connecting pipe, and a gas outlet hole (8) is provided on the second connecting pipe.

3. The mine water electrolysis hydrogen production device according to claim 1, characterized in that: The first filter membrane (6) is a forward osmosis membrane.

4. A mine water electrolysis hydrogen production device according to claim 3, characterized in that: The second filter membrane (7) is a phase change migration membrane.

5. A mine water electrolysis hydrogen production device according to claim 4, characterized in that: The forward osmosis membrane and the phase change migration membrane have the same structure and both comprise a support layer, an intermediate layer and an active layer which are bonded and connected in sequence.

6. The mine water electrolysis hydrogen production device according to claim 1, characterized in that: The bottom surface of the heating tank (2) is provided with a slag discharge hole (21) for discharging solid waste.

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