KR101663413B1 - An appratus for making hydrogen gas and the method of making it - Google Patents

Abstract

The present invention relates to an apparatus for producing hydrogen gas using electrolysis, comprising: a salt solution inlet 101; An electrolysis unit (102); A gas separation device 104; A chlorine solution reservoir 105; A saltwater storage tank 103; A hydrogen gas storage tank 106; An electric energy switching unit 107; And a DC power supply 108; Thereby increasing the solubility and reactivity of the chlorine gas, increasing the purity of the hydrogen gas and producing the hydrogen gas in a large quantity.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for producing hydrogen gas using electrolysis,

The present invention relates to an apparatus and method for producing hydrogen gas using electrolysis, and more particularly, to a method for producing high purity hydrogen gas by using the difference in specific gravity and solubility of a gas mixture generated in electrolysis.

The use of fossil fuels such as petroleum and coal pollutes the environment and it is urgent to develop alternative energy sources for finite consumption due to massive use.

Generally, hydrogen gas is used to convert the energy generated by the chemical reaction between hydrogen gas and oxygen into electric energy. In domestic, it is widely used in industries such as semiconductor industry and optical communication industry. Therefore, Various researches and developments have been carried out regarding the storage of the gas and the utilization of the hydrogen gas.

Conventionally, a method of producing hydrogen gas by decomposing water by an electrolysis method has been used to obtain the hydrogen gas as described above. However, such a manufacturing method has a problem that economical efficiency is low because excessive electricity is consumed to produce hydrogen gas.

In order to solve the above problems, hydrogen was produced and used as a steam reforming method using natural gas. However, in the process of producing hydrogen from natural gas, methane, which is a main component of natural gas, By

Hydrogen in the coal and hydrogen in the water vapor are decomposed to generate hydrogen and carbon monoxide, which is a by-product, thereby polluting the environment.

In order to solve the above problems, Japanese Patent Application Laid-Open No. 10-1243767 discloses a steam reforming reaction unit for reacting methane gas with water vapor to produce a synthesis gas, and a reforming unit for reforming carbon monoxide in the synthesis gas produced through the steam reforming reaction unit, A selective oxidation reaction unit for oxidizing carbon monoxide in the synthesis gas discharged through the hydrogen gas conversion reaction unit; and a selective oxidation reaction unit for oxidizing carbon monoxide in the synthesis gas discharged through the hydrogen gas conversion reaction unit, A cooling part for cooling the reaction part, a steam reforming part, and a main part for storing the hydrogen gas conversion part, the cooling part and the selective oxidation part in this order, wherein the hydrogen gas conversion part reacts with the waste heat of the steam reforming part Wherein the selective oxidation reaction unit comprises a synthesis gas generator A gas induction pipe communicating with the inlet port and provided in the left and right direction at the lower end of the reaction chamber, and a plurality of gas chambers communicating with the gas induction pipe and vertically installed in the reaction chamber, Wherein the gas guide tube and the gas injection tube are end-finished, and the gas injection tube includes a plurality of injection holes which are perforated with different directions.

The above-described technology has a problem in that it requires a lot of manufacturing cost due to a complicated configuration, and requires a skilled worker to operate the device.

Open Patent Publication No. 10-2014-120443 discloses a method of supplying a reaction raw material containing hydrocarbon into a cylindrical reactor through an inlet pipe, a reactor, a heater, a separation vessel, and a filter section, After the reaction heat of 800 ~ 1200 ℃ is supplied, it is decomposed into solid carbon and hydrogen and supplied to a cylindrical separating vessel. It separates the solid carbon and hydrogen through the separation vessel and discharges hydrogen gas And a manufacturing method thereof.

Open Patent Publication No. 10-2004-0080332 discloses a device for producing hydrogen gas by electrolysis by separating hydrogen and oxygen generated by electrolysis of water with a diaphragm between the anode and the cathode by separately generating an anode and an anode. There is a disadvantage that the diaphragm must be placed between the anode and the cathode, the mass production of the hydrogen gas is difficult, and the electrolysis of the pure water is not performed.

Open Patent Publication No. 10-2012-0115112 discloses a method for producing a chlorine gas and a hydrogen gas, which is a technique for separating chlorine gas and hydrogen gas using only the difference in specific gravity of the gas mixture of hydrogen and chlorine generated in electrolysis However, the purity of the hydrogen gas is low and it is inevitable to produce a small amount in order to increase the purity of the hydrogen gas.

Japanese Patent Laid-Open Publication No. 10-2004-0080332, Japanese Patent Application Laid-Open No. 10-2014-120443 Japanese Patent Application Laid-Open No. 10-2012-0115112, Registered Patent No. 10-1243767

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The main object of the present invention is to separate hydrogen gas and chlorine gas generated in electrolysis from each other in high purity in a mixed state in accordance with the purpose of use, and to produce hydrogen gas in a large amount.

In order to solve the above problems,

A salt solution inlet 101 for introducing a salt solution or seawater into the electrolysis unit 102 described below;

An electrolysis unit (102) for electrolyzing the salt solution or seawater introduced from the salt solution inlet (101) to generate hydrogen gas and chlorine gas, and to produce disinfection water containing sodium chloride in the aqueous solution;

A gas separator 104 for separating the hydrogen gas and chlorine gas generated from the electrolysis unit 102 by using difference in specific gravity difference and solubility in water;

A chlorine solution reservoir 105 into which chlorine gas separated from the gas separator 104 flows;

A chlorine storage tank (103) in which the chlorine solution in the chlorine solution storage tank (105) flows and stores the salt solution therein;

A hydrogen gas reservoir 106 for storing the hydrogen gas separated from the gas separator 104;

An electric energy conversion unit 107 for converting the hydrogen gas introduced from the hydrogen gas storage tank 106 into electric energy; And a DC power supply 108; The present invention provides an apparatus for producing hydrogen gas using electrolysis as means for solving the problems.

The gas separator 104 is a device for separating hydrogen gas and chlorine gas, and a plate-like or perforated plate-shaped partition wall is provided in the separator to contact the gas and water or the sodium chloride solution for a long time and smoothly With features,

The electrolytic unit 102 is equipped with a gas shutoff cover for hermetic sealing in order to block the inflow of external gas in addition to the gas generated during the electrolysis of the salt solution or seawater.

The apparatus for producing hydrogen gas using electrolysis according to the present invention is an apparatus for separating only hydrogen gas from a mixed gas generated in an electrolysis process by introducing a salt solution or seawater and electrolyzing the salt solution without diaphragm between electrode plates, And a device for separating hydrogen gas having high purity by using difference of specific gravity of gas, difference of solubility in water and reactivity with sodium chloride solution for the generated mixed gas, so that a large amount of hydrogen gas can be produced in a short time There are advantages.

1 is a schematic view of an apparatus for producing hydrogen gas using electrolysis of the present invention.
Fig. 2 shows the construction of a part of Fig. 1, showing the separation of hydrogen gas through a hydrogen separator device. Fig.
Fig. 3 shows the construction of a part of Fig. 1, showing a device for generating a hydrogen chloride and chlorine gas by introducing a salt solution to produce a chloride salt;

Best Mode for Carrying Out the Invention The present invention will be described in more detail based on the drawings and examples. While the present invention has been described with reference to certain embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities.

The claims of the present invention can be divided into a case where the description of the invention is reduced, a case where the description is enlarged, an case where the description is expanded, or a case where the same description is made.

The scope of the invention is narrower than the description in the description of the invention. In contrast to the case of the reduced substrate, the extended substrate is deemed to be included in the claim scope rather than the matters described in the detailed description of the invention. This is a case where a technical scope is broadly described. The same description refers to the case where the matters described in the detailed description of the invention are similarly described in the claims.

It should be apparent that the invention is not to be construed as limited in scope.

It is to be understood that the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, A, B, etc. may be used to describe various elements, but the elements should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The hydrogen gas producing apparatus of the present invention separates hydrogen gas and chlorine gas generated by mixing in the electrolytic process into high purity hydrogen gas by using the specific gravity difference and solubility of chlorine gas in water and reactivity with sodium chloride solution .

Further, the apparatus of the present invention is characterized in that the salt solution is introduced into the electrolysis tank, the gas generated in the electrolysis process is collected by the gas separation tank, the hydrogen chloride contained in the treated water is stored separately as an aqueous solution, Apparatus and method.

1 is a schematic view of an apparatus for producing hydrogen gas using electrolysis according to the present invention. As shown in FIG. 1, a salt solution inlet 101, an electrolysis unit 102, a chlorination storage tank 103, a gas separation unit 104, A chlorine solution reservoir 105, a hydrogen gas reservoir 106, an electric energy switching unit 107, and a DC power supply unit 108.

The salt solution inlet 101 is a device for supplying a salt (NaCl) solution or seawater to the electrolysis unit 102.

The electrolytic unit 102 electrolyzes the inflow water containing the electrolyte to generate hydrogen and chlorine gas, and produces disinfection water containing sodium chloride in the aqueous solution.

The sodium chloride is sodium hypochlorite, and residual chlorine (HOCl, OCL ^- ) is generated during the electrolysis of chlorine ions in the water during the electrolysis process, which is stored in the chlorine storage tank 103.

Inside the electrolysis unit 102, an anode and a cathode are formed.

The anode uses an insoluble electrode.

The positive electrode and the negative electrode are disposed to be spaced apart from each other at regular intervals, and a partition wall is formed to allow the flow of the influent water to pass through the electrode plate.

The positive electrode and the negative electrode may be made of the same material, or the negative electrode may be made of a stainless steel material.

The decontamination storage tank 103 serves to store treated water containing residual chlorine remaining in the water during electrolysis.

The conglomerate reservoir (103) is composed of a reservoir in the form of a tank having high durability against decontamination and chlorine gas.

As materials having high durability against halide and chlorine gas Polyethylene (PE) or polypropylene (PP) is preferably used. However, it should be understood that the present invention is not limited thereto, and those skilled in the art can surely select the material thereof without departing from the object or effect of the present invention.

The gas separator 104 is a device for separating hydrogen gas and chlorine gas generated in the electrolysis unit 102, and is configured to have a plate-like or perforated plate-shaped partition wall therein.

In the gas separator 104, high-purity hydrogen gas is separated using difference in specific gravity between hydrogen gas and chlorine gas and difference in solubility in water.

The chlorine solution reservoir 105 is supplied with chlorine gas separated from the gas separator 104.

The hydrogen gas reservoir 106 serves to compress and store the hydrogen gas separated from the gas separator 104 through the gas filter in a state of high purity.

The DC power supply unit 108 converts the AC current into a DC current and supplies the DC power to a power source for generating gas in the electrolytic cell. It serves as a supplier.

2 is a diagram showing the separation of hydrogen gas through a hydrogen separator device.

Here, the hydrogen gas concentration measuring sensor 109 is installed above the gas separator 104, and serves to measure the concentration of the hydrogen gas and give a signal for changing the operating condition such as opening and closing of the valve.

The gas filtration unit 110 is constituted by an air filter, and functions to filter other impurity gases other than hydrogen gas for high purity of hydrogen.

The high-pressure gas pump 111 compresses and stores the generated hydrogen in the hydrogen gas storage tank 106.

Due to the above-described structure, the gas generated through electrolysis passes through the solvent or the sodium solution layer and is separated into high-purity hydrogen due to the difference in specific gravity and solubility. At this time, it is important to efficiently separate the chlorine gas generated to increase the purity of the generated hydrogen gas. For this purpose, the volume of the solvent is adjusted to dissolve the chlorine gas in the solvent, or the reaction time with the sodium chloride solution is kept long. The first and second stages of the partition walls in the gas separation apparatus 104 are plate- It is preferable to form the porous plate type in order to efficiently perform gas separation. However, the present invention is not limited to this, and it is obvious that those skilled in the art can appropriately design and change the shape, number and position of the partition walls in the gas separation apparatus.

The separated hydrogen gas is placed in the gas filtration unit 110 to increase the purity of hydrogen before it is collected in the storage tank. And other impurity gases other than hydrogen gas are filtered through the gas filtration unit 110 to collect high purity hydrogen gas.

The hydrogen gas separated through the above process can be used as an energy source, the secondary salt can be used as disinfection water, and the hydrogen can be stored in a high-pressure vessel at a certain pressure or more using a high-pressure pump.

Fig. 3 shows the construction of a part of Fig. 1, showing a device for generating a hydrogen chloride and chlorine gas by introducing a salt solution to produce a chloride salt; As shown in the figure, the apparatus includes a salt solution inflow unit 101, a sequestering tank 103, an electrolysis unit 102, and a DC power supply unit 108, and flows into the electrolysis unit from the salt solution inflow unit to generate gas The power supply to the electrolysis unit is operated to supply from the DC power supply.

It is possible to maximize the effect of discharging the partition wall in the electrolysis unit 102 over the water surface of the generated gas and to reduce the amount of the salt solution by reusing the electrolyte remaining in the treated water as influent water through the transportation. The upper cover of the electrolysis unit 102 is made of a material resistant to chlorine gas corrosion so as to have a function of blocking external gas inflow and a function of collecting generated hydrogen at an upper portion thereof. As shown in FIG.

The gas generated by electrolyzing the salt solution or the seawater through the apparatus having the above-described configuration is injected into the lower part of the gas separator filled with water or sodium chloride solution, and sufficiently contacts the water or the sodium chloride solution in the plate- The chlorine gas is dissolved in water or reacted with sodium chloride solution to be converted into hypochlorous acid, and the hydrogen gas ascends upward due to the difference in specific gravity, and is separated from the mixed gas at the partition walls provided with the perforated plate, As a method for further increasing the purity of the captured hydrogen gas, an air filter may be installed to filter out other off-gas to store high-purity hydrogen gas in a high-pressure gas storage container using a pressure pump.

3 is a view showing an electrolytic apparatus for injecting a salt solution or seawater to generate hydrogen gas and chlorine gas. The upper part of the electrolytic cell in which the gas is generated is equipped with a gas shutoff lid for blocking external gas such as air from entering the gas separation vessel. The treated water that generates the gas is transferred to the separate storage tank as an aqueous solution containing hypochlorous acid ions and used as sterilized disinfectant water.

101: Salt solution inlet part 102: Electrolysis unit
103: Teflon storage tank 104: Gas separation unit
105: Chlorine solution reservoir 106: Hydrogen gas reservoir
107: Electric energy conversion part 108: DC power supply part
109: hydrogen gas concentration measuring sensor 110: gas filtration section
111: High pressure gas pump

Claims (3)

A salt solution inlet 101 for introducing a salt solution or seawater into the electrolysis unit 102 described below;
An electrolysis unit (102) for electrolyzing the salt solution or seawater introduced from the salt solution inlet (101) to generate hydrogen gas and chlorine gas, and to produce disinfection water containing sodium chloride in the aqueous solution;
A gas separator 104 for separating the hydrogen gas and chlorine gas generated from the electrolysis unit 102 by using difference in specific gravity difference and solubility in water;
A chlorine solution reservoir 105 into which chlorine gas separated from the gas separator 104 flows;
A chlorine storage tank (103) in which the chlorine solution in the chlorine solution storage tank (105) flows and stores the salt solution therein;
A hydrogen gas reservoir 106 for storing the hydrogen gas separated from the gas separator 104;
An electric energy conversion unit 107 for converting the hydrogen gas introduced from the hydrogen gas storage tank 106 into electric energy; And a DC power supply 108;
A hydrogen gas concentration measuring sensor 109 installed on the gas separator 104 to measure the concentration of hydrogen gas;
A gas filtering unit 110 composed of an air filter and filtering out other impurity gases other than hydrogen gas;
A high-pressure gas pump 111 for compressing and storing generated hydrogen in a hydrogen gas reservoir 106; Respectively,
The gas separator 104 is a device for separating hydrogen gas and chlorine gas. The separator is provided with plate-shaped and perforated-plate-shaped partition walls. The first and second plates are plate-shaped. And is characterized in that the contact between the gas and water or the sodium chloride solution is performed for a long period of time and smoothly,
The electrolytic unit 102 is equipped with a gas-blocking cover for hermetic sealing in order to block the inflow of external gas in addition to the gas generated during the electrolysis of the salt solution or the seawater. Gas production equipment delete delete

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