阅读说明：本技术 用于制备氢气的装置及方法 (Apparatus and method for producing hydrogen ) 是由 杨磊 杨阳阳 高笑菲 刘伟明 张建荣 麻礼东 于 2019-12-24 设计创作，主要内容包括：本发明公开了一种用于制备氢气的装置及方法,所述装置包括：第一反应单元(1),包括第一端(A)和第二端(B),所述第一反应单元(1)内设置有多个载热颗粒(2)；加热单元,设置为加热所述多个载热颗粒(2)；连接至所述第一端(A)的第一输送管道(41)和第三输送管道(43)；以及连接至所述第二端(B)的第二输送管道(42)和第四输送管道(44)；其中,所述第一输送管道(41)设置为送入多个金属氧化物颗粒,所述第二输送管道(42)设置为送入甲烷气体,所述第三输送管道(43)设置为排出反应后包含有氢气的混合气体,所述第四输送管道(44)设置为排出反应后的液态金属。(The invention discloses a device and a method for preparing hydrogen, wherein the device comprises: a first reaction unit (1) comprising a first end (A) and a second end (B), wherein a plurality of heat carrying particles (2) are arranged in the first reaction unit (1); a heating unit arranged to heat said plurality of heat carrier particles (2); a first delivery duct (41) and a third delivery duct (43) connected to said first end (A); and a second delivery duct (42) and a fourth delivery duct (44) connected to said second end (B); wherein the first delivery pipe (41) is configured to feed a plurality of metal oxide particles, the second delivery pipe (42) is configured to feed methane gas, the third delivery pipe (43) is configured to discharge a mixed gas containing hydrogen after the reaction, and the fourth delivery pipe (44) is configured to discharge liquid metal after the reaction.)

1. An apparatus for producing hydrogen gas, comprising:

a first reaction unit (1) comprising a first end (A) and a second end (B), wherein a plurality of heat carrying particles (2) are arranged in the first reaction unit (1);

a heating unit arranged to heat said plurality of heat carrier particles (2);

a first delivery duct (41) and a third delivery duct (43) connected to said first end (A); and

a second delivery duct (42) and a fourth delivery duct (44) connected to said second end (B);

wherein the first delivery pipe (41) is configured to feed a plurality of metal oxide particles, the second delivery pipe (42) is configured to feed methane gas, the third delivery pipe (43) is configured to discharge a mixed gas containing hydrogen after the reaction, and the fourth delivery pipe (44) is configured to discharge liquid metal after the reaction.

2. The apparatus according to claim 1, further comprising a second reaction unit (5), wherein the second reaction unit (5) is connected to the first conveying pipe (41) and the fourth conveying pipe (44), wherein the liquid metal reacts in the second reaction unit (5) to form metal oxide and hydrogen, and the metal oxide is treated to obtain the metal oxide particles.

3. The apparatus according to claim 2, characterized in that the liquid metal reacts with water in the second reaction unit (5).

4. The apparatus according to claim 1, further comprising a first separation unit (6) and a fifth transfer duct (45), the first separation unit (6) being connected to the third transfer duct (43) and being arranged to separate unreacted methane gas from the mixed gas, the unreacted methane gas being fed to the first reaction unit (1) via the fifth transfer duct (45).

5. Device according to claim 1, further comprising a second separation unit (7) arranged at said second end (B) for separating pure liquid metal.

6. Device according to claim 1, characterized in that the size of said metal oxide particles is smaller than the size of the interstices between said plurality of heat carrier particles (2).

7. The device according to claim 1, characterized in that said heating unit comprises a light concentration unit (3) arranged to focus sunlight onto said first reaction unit (1) to heat said plurality of heat carrier particles (2).

8. Device according to claim 1, characterized in that the plurality of heat carrier particles (2) is heated to 1000-1200K.

9. Device according to claim 1, characterized in that the wetting angle of the liquid metal with respect to the surface of the heat carrier particles (2) is greater than a preset value.

10. A method for producing hydrogen comprising:

heating a plurality of heat carrier particles (2) in a first reaction unit (1);

after heating to a preset temperature, respectively feeding a plurality of metal oxide particles and methane gas from two ends of the first reaction unit (1) so that the metal oxide particles and the methane gas react in the first reaction unit (1); and

discharging the mixed gas containing hydrogen and liquid metal after reaction.

11. The method of claim 10, further comprising:

conveying the liquid metal to a second reaction unit (5) to react to generate metal oxide and hydrogen, wherein the metal oxide is treated to obtain metal oxide particles; and

feeding the obtained metal oxide particles to the first reaction unit (1).

12. A method according to claim 11, characterized by reacting the liquid metal with water in the second reaction unit (5).

13. The method of claim 10, further comprising:

the mixed gas is separated by a first separation unit (6), and the separated unreacted methane gas is sent to the first reaction unit (1).

14. The method of claim 10, further comprising:

the second separation unit (7) is used to separate the pure liquid metal.

15. Method according to claim 10, characterized in that said metal oxide particles are allowed to pass smoothly through the interstices between said plurality of heat carrier particles (2).

16. Method according to claim 10, characterized in that heating the plurality of heat carrier particles (2) comprises:

sunlight is focused to the first reaction unit (1) to heat the plurality of heat carrier particles (2) therein.

17. The method of claim 10, wherein the predetermined temperature is 1000K to 1200K.

18. Method according to claim 10, characterized in that the wetting angle of the liquid metal with respect to the surface of the heat carrier particles (2) is made greater than a preset value.

Technical Field

The embodiment of the invention relates to the field of gas preparation, in particular to a device and a method for preparing hydrogen.

Background

Hydrogen is used as an industrial raw material and a clean fuel, and has wide application requirements in various fields such as chemical industry, metallurgy, electronics, medicine, food, aerospace, energy and the like, so that the development of a device and a method for preparing hydrogen is of great significance.

At present, hydrogen is industrially produced mainly by water electrolysis and by using coal, petroleum and natural gas as raw materials, however, no matter which hydrogen production method is adopted, a large amount of electric energy or heat energy is consumed, a large amount of fossil fuel is needed for heat supply, on one hand, energy is wasted, and on the other hand, environmental pollution is caused by fuel combustion. In addition, the hydrogen production process may include complex extraction separation steps, which may result in increased plant complexity and increased hydrogen production costs.

Therefore, there is a need to develop an apparatus and a method for producing hydrogen, which can save energy, save cost, have a simple structure and are environmentally friendly.

Disclosure of Invention

A primary object of the present invention is to provide an apparatus and method for producing hydrogen to solve at least one of the above technical problems.

According to an aspect of the present invention, there is provided an apparatus for producing hydrogen, comprising: the first reaction unit comprises a first end and a second end, and a plurality of heat carrying particles are arranged in the first reaction unit; a heating unit arranged to heat the plurality of heat carrier particles; a first delivery conduit and a third delivery conduit connected to the first end; and second and fourth delivery conduits connected to the second end; the first conveying pipeline is set to be fed with a plurality of metal oxide particles, the second conveying pipeline is set to be fed with methane gas, the third conveying pipeline is set to be used for discharging mixed gas containing hydrogen after reaction, and the fourth conveying pipeline is set to be used for discharging liquid metal after reaction.

According to some embodiments, the apparatus further comprises a second reaction unit, the second reaction unit is connected with the first conveying pipeline and the fourth conveying pipeline, the liquid metal reacts in the second reaction unit to generate metal oxide and hydrogen, and the metal oxide is treated to obtain the metal oxide particles.

According to some embodiments, the liquid metal reacts with water within the second reaction unit.

According to some embodiments, the apparatus further comprises a first separation unit connected to the third transfer line and configured to separate unreacted methane gas from the mixed gas, the unreacted methane gas being sent to the first reaction unit via the fifth transfer line.

According to some embodiments, the device further comprises a second separation unit arranged at the second end for separating pure liquid metal.

According to some embodiments, the size of the metal oxide particles is smaller than the size of the interstices between the plurality of heat carrier particles.

According to some embodiments, the heating unit comprises a light concentration unit arranged to focus sunlight onto the first reaction unit to heat the plurality of heat carrier particles.

According to some embodiments, the plurality of heat carrier particles is heated to 1000K to 1200K.

According to some embodiments, the wetting angle of the liquid metal with respect to the surface of the heat carrier particles is greater than a preset value.

According to another aspect of the present invention, there is provided a method for producing hydrogen, comprising: heating a plurality of heat carrier particles in a first reaction unit; after the reaction kettle is heated to a preset temperature, a plurality of metal oxide particles and methane gas are respectively fed from two ends of the first reaction unit, so that the metal oxide particles and the methane gas react in the first reaction unit; and discharging the mixed gas containing hydrogen after the reaction and the liquid metal.

According to some embodiments, the method further comprises: conveying the liquid metal to a second reaction unit to react to generate metal oxide and hydrogen, wherein the metal oxide is treated to obtain metal oxide particles; and feeding the obtained metal oxide particles to the first reaction unit.

According to some embodiments, the liquid metal is allowed to react with water within the second reaction unit.

According to some embodiments, the method further comprises: and separating the mixed gas by using a first separation unit, and sending the separated unreacted methane gas to the first reaction unit.

According to some embodiments, the method further comprises: the second separation unit is used to separate the pure liquid metal.

According to some embodiments, the metal oxide particles are allowed to pass smoothly through the gaps between the plurality of heat carrier particles.

According to some embodiments, heating the plurality of heat carrier particles comprises: sunlight is focused to the first reaction unit to heat the plurality of heat carrier particles therein.

According to some embodiments, the preset temperature is 1000K to 1200K.

According to some embodiments, the wetting angle of the liquid metal with respect to the surface of the heat carrier particles is made greater than a preset value.

In the apparatus for producing hydrogen according to an embodiment of the present invention, heat may be provided for the reaction in the first reaction unit by providing a heating unit to heat a plurality of heat carrier particles, which serve as energy storage carriers. In addition, the metal oxide particles and the methane gas flow in the gaps of the plurality of heat-carrying particles, and can fully contact with the heat-carrying particles, so that the heat exchange area is increased, and the reaction efficiency is improved. Meanwhile, the metal oxide particles are decomposed or reduced into liquid metal after reaction, and the liquid metal can freely flow out along the gaps of the heat-carrying particles without adopting complex extraction and separation equipment, so that the device has a simple structure. In addition, the metal oxide particles are used as the oxidant, so that the cost problem and the safety problem caused by adopting pure oxygen in the traditional process can be avoided.

Drawings

Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.

Fig. 1 shows a schematic view of an apparatus for producing hydrogen according to an exemplary embodiment of the present invention;

fig. 2 shows a flow diagram of a method for producing hydrogen according to an exemplary embodiment of the present invention; and

fig. 3 shows a flow diagram of a method for producing hydrogen according to another exemplary embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to simplify the drawing.

Fig. 1 shows a schematic view of an apparatus 100 for producing hydrogen gas according to an exemplary embodiment of the present invention. As shown in fig. 1, the apparatus 100 includes: the first reaction unit 1 comprises a first end A and a second end B, and a plurality of heat carrying particles 2 are arranged in the first reaction unit 1; a heating unit arranged to heat the plurality of heat carrier particles 2; a first delivery duct 41 and a third delivery duct 43 connected to the first end a; and a second delivery duct 42 and a fourth delivery duct 44 connected to the second end B; wherein the first transfer line 41 is configured to feed a plurality of metal oxide particles, the second transfer line 42 is configured to feed methane (CH4) gas, and the third transfer line 43 is configured to discharge hydrogen (H) gas contained after the reaction₂) And a fourth delivery conduit 44 is provided to discharge the reacted liquid metal.

In the apparatus 100 for producing hydrogen gas according to an embodiment of the present invention, heat may be provided for the reaction in the first reaction unit 1 by providing a heating unit to heat the plurality of heat carrier particles 2, and the plurality of heat carrier particles 2 serve as energy storage carriers. In addition, the metal oxide particles and the methane gas flow in the gaps between the plurality of heat transfer particles 2, and can sufficiently contact the heat transfer particles 2, thereby increasing the heat exchange area and improving the reaction efficiency. Meanwhile, the metal oxide particles are decomposed or reduced into liquid metal after reaction, and the liquid metal can freely flow out along the gaps of the heat-carrying particles 2 without adopting complex extraction and separation equipment, so that the device has a simple structure. In addition, the metal oxide particles are used as the oxidant, so that the cost problem and the safety problem caused by adopting pure oxygen in the traditional process can be avoided.

The first and second transfer pipes 41 and 42, which serve as raw material input pipes, may be used to continuously feed a plurality of metal oxide particles and methane gas into the first reaction unit 1, respectively. The third delivery pipe 43 and the fourth delivery pipe 44 are used as output pipes of the reaction product, and can be used for discharging the mixed gas containing hydrogen after the reaction and the liquid metal after the reaction in time. Therefore, the raw materials continuously enter, the reaction products are discharged in time, and meanwhile, the light condensing unit 3 keeps condensing and irradiating the first reaction unit 1 to heat the plurality of heat carrying particles 2, so that the reaction in the first reaction unit 1 can be continuously carried out. The first transfer pipe 41 may be connected to a first storage unit storing a large amount of metal oxide particles, and the second transfer pipe 42 may be connected to a second storage unit storing a large amount of methane gas. The discharged mixed gas containing hydrogen can be separated to obtain hydrogen for various purposes, and the discharged liquid metal can be separately treated or utilized. The first end a may be an upper end of the first reaction unit 1, and the second end B may be a lower end of the first reaction unit 1, to which the plurality of metal oxide particles and the liquid metal may freely flow under gravity.

The heating unit may comprise a light concentration unit 3 arranged to focus sunlight onto the first reaction unit 1 to heat the plurality of heat carrier particles 2. The light-condensing unit 3 may automatically track the position of the sun and focus sunlight to the first reaction unit 1. The first reaction unit 1 can be provided with a large-area light transmission window, sunlight can irradiate the heat-carrying particles 2 in the first reaction unit 1 through the light transmission window, and the light transmission window can be made of quartz glass with high temperature resistance, high pressure resistance and good light transmission. Sunlight is focused to the first reaction unit 1 through the light condensation unit 3 to heat the heat carrying particles 2, so that clean solar energy can be used as external energy to provide heat energy for reaction, fossil fuel is not consumed, and the device is energy-saving and environment-friendly.

The heating unit may also be any other device suitable for heating the plurality of heat carrier particles 2, as long as the plurality of heat carrier particles 2 are made to act as energy storage carriers within the first reaction unit 1. For example, the heating unit may be an electric heating device.

The heat carrying particles 2 can be ceramic particles (such as silicon carbide ceramic particles) with stable physical and chemical properties, so that the physical properties of the heat carrying particles themselves are not obviously changed in a high-temperature environment, and the heat carrying particles do not react with other substances in the first reaction unit 1. The heat-carrying particles 2 can have good heat absorption performance, so that solar energy can be effectively utilized for photothermal conversion, and sufficient heat energy is provided for hydrogen production reaction. The heat carrier particles 2 can be dark particles and the heat carrier particles 2 can be high-density particles. The particle diameter of the plurality of heat transfer particles 2 may be 1 to 100mm, and may be appropriately selected according to the first reaction unit 1.

The metal oxide particles react with methane gas in the first reaction unit 1 as follows:

X_mO_n+nCH₄→mX+nCO+2nH₂(1)

wherein X represents a certain metal element, X_mO_nRepresents a metal oxide.

According to the formula (1), after the metal oxide particles react with methane gas, corresponding metal simple substances are generated, and the molar ratio is 1: 2 carbon monoxide gas (CO) and hydrogen gas (H)₂). The carbon monoxide gas and the hydrogen gas in a molar ratio of 1: 2 are mixed gas having high industrial utility value.

The above reaction is desirably carried out at a temperature, for example, Fe at 1200K or less, depending on the change of the standard Gibbs free energy depending on the reaction temperature₃O₄、ZnO、SnO₂Can be substituted by CH₄Reduced to the corresponding elemental metal, thus CH₄Are each independently of Fe₃O₄ZnO and SnO₂It is thermodynamically feasible to have a gas-solid phase reaction at 1200K or less.

In an embodiment of the invention, a plurality of metal oxide particles enter from a first end a of the first reaction unit 1 and flow along the interstices of the plurality of heat carrier particles 2 towards a second end B, while continuously absorbing the heat of the heat carrier particles 2. At the same time, methane gas enters from the second end B of the first reaction unit 1 and flows along the gaps of the plurality of heat carrier particles 2 to the first end a, and the heat of the heat carrier particles 2 is continuously absorbed in the flowing process. Thus, after heat is extracted, the metal oxide particles and methane gas can react at a certain temperature. The plurality of metal oxide particles and the methane gas flow in a large number of gaps between the plurality of heat carrier particles 2, respectively, so that the heat exchange area can be increased, and the reaction efficiency can be improved. The size of the metal oxide particles may be smaller than the size of the interstices between the plurality of heat carrier particles 2, thereby enabling the metal oxide particles to pass smoothly through the interstices between the plurality of heat carrier particles 2.

In order to facilitate the smooth discharge of the reacted elemental metal, the invention makes the reacted elemental metal in a liquid state, so that the reacted elemental metal can freely flow out from the gaps among the plurality of heat-carrying particles 2. Specifically, a metal having a melting point lower than the reaction temperature may be selected. For example, the melting point of metal zinc is 692K, and when the reaction temperature is higher than 692K, the reduced zinc is in a liquid state. In one embodiment of the invention, a plurality of heat carrier particles 2 can be heated to 1000K to 1200K to provide a corresponding reaction temperature. In another embodiment, the plurality of heat carrier particles 2 can be heated to 1093K 1180K. The metal oxide particles may be zinc oxide particles.

In order to ensure that the liquid metal after the reaction can flow out smoothly and sufficiently from the gaps between the plurality of heat carrier particles 2, in one embodiment of the invention, the wetting angle of the liquid metal with respect to the surface of the heat carrier particles 2 can be made greater than a preset value. Since the larger the wetting angle, the higher the degree of "non-wetting", the present invention makes the liquid metal "non-wetting" with respect to the surface of the heat carrier particles 2, so that the liquid metal does not stick to the heat carrier particles 2, but can be sufficiently and rapidly discharged from the first reaction unit 1. The surface of the heat transfer particles 2 can be roughened sufficiently by hardening and sanding, so as to achieve the effect of "non-wetting", in which the contact angle of the liquid metal increases with increasing roughness of the surface of the heat transfer particles 2, and the liquid metal is less wetting. Furthermore, the rough surface of the heat carrier particles 2 also facilitates the passage of the metal oxide particles through the interstices of the heat carrier particles 2.

Referring to fig. 1, in one embodiment, the apparatus 100 may further include a second reaction unit 5, the second reaction unit 5 is connected to the first conveying pipe 41 and the fourth conveying pipe 44, the liquid metal reacts in the second reaction unit 5 to generate metal oxide and hydrogen, and the metal oxide is treated to obtain the metal oxide particles. Therefore, the liquid metal as a reaction product can be recycled, the liquid metal is reacted and treated to obtain metal oxide particles which are used as reaction raw materials for continuous use, and pure hydrogen can be generated by the reaction for various purposes. That is, the liquid metal generated in the first reaction unit 1 flows into the fourth conveying pipe 44 under the action of gravity and flows to the second reaction unit 5 through the fourth conveying pipe 44, the liquid metal reacts in the second reaction unit 5 to generate metal oxide and hydrogen, the metal oxide is treated to obtain metal oxide particles, and the metal oxide particles are conveyed back to the first reaction unit 1 through the first conveying pipe 41 to participate in the reaction. It can thus be seen that in this example, hydrogen can be produced from two routes: firstly, metal oxide particles react with methane gas in the first reaction unit 1 to generate the metal oxide particles; secondly, the liquid metal reacts in the second reaction unit 5 to generate metal oxide at the same time. The gas obtained in the first way is mixed gas, and needs to be further separated to obtain hydrogen, and the gas obtained in the second way is pure hydrogen.

For example, the liquid metal may react with water in the second reaction unit 5, and the reaction equation is as follows:

mX+nH₂O→X_mO_n+nH₂(2)

according to the formula (2), the liquid metal is subjected to hydrolysis reaction to generate metal oxide and hydrogen, so that the aim of hydrogen production is fulfilled. Some properties are relatively stable and can react with H₂Reaction of O to H₂The metal of (B) includes Fe, Zn, Mg, Ca, Al, Ti, Sn, etc.

The apparatus 100 may further comprise a second separation unit 7 arranged at the second end B for separating pure liquid metal. The second separation unit 7 is arranged between the first reaction unit 1 and the second reaction unit 5, and can remove impurities in the reacted liquid metal, so that the pure liquid metal enters the second reaction unit 5 to react to generate pure metal oxide.

Referring to fig. 1, the apparatus 100 may further include a first separation unit 6 and a fifth transfer pipe 45, and the first separation unit 6 is connected to the third transfer pipe 43 and is configured to separate unreacted methane gas from the mixed gas, which is fed into the first reaction unit 1 through the fifth transfer pipe 45. The mixed gas discharged from the third transfer pipe 43 may include carbon monoxide and hydrogen generated by the reaction, and unreacted methane gas. The first separation unit 6 separates unreacted methane gas to obtain a mixed gas of carbon monoxide and hydrogen. Unreacted methane gas is conveyed to the first separation unit 6 again to participate in the reaction, so that the waste of raw materials can be avoided, carbon emission is prevented, and the method is economical and environment-friendly. The first separation unit 6 may separate the mixed gas using a membrane separation technique.

Fig. 2 shows a flow diagram of a method for producing hydrogen according to an exemplary embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:

s1, heating the plurality of heat transfer particles 2 in the first reaction unit 1;

s2, after heating to a preset temperature, respectively feeding a plurality of metal oxide particles and methane gas from two ends of the first reaction unit 1, so that the metal oxide particles and the methane gas react in the first reaction unit 1; and

and S3, discharging the mixed gas containing hydrogen and liquid metal after reaction.

The step S1 may include: sunlight is focused to the first reaction unit 1 to heat the plurality of heat carrier particles 2 therein. Alternatively, the plurality of heat carrier particles 2 can also be heated by electrical heating.

The step S2 may include: so that the metal oxide particles can pass through the gaps between the plurality of heat carrier particles 2 smoothly. Thereby, the metal oxide particles and the methane gas can flow together through the gap to react, and simultaneously, the heat of the plurality of heat carrier particles 2 can be respectively obtained in the flowing process to ensure that the reaction is carried out at a certain temperature.

In the step S2, the preset temperature may be 1000K to 1200K.

The method may further comprise: the wetting angle of the liquid metal relative to the surface of the heat carrier particles 2 is larger than a preset value, so that the reacted liquid metal can be fully discharged.

Fig. 3 shows a flow chart of a method for producing hydrogen according to another exemplary embodiment of the present invention, and the method shown in fig. 3 is different from that of fig. 2 in that it further includes the steps of:

s4, conveying the liquid metal to a second reaction unit 5 to react to generate metal oxide and hydrogen, wherein the metal oxide is treated to obtain metal oxide particles; and

s5, feeding the obtained metal oxide particles to the first reaction unit 1.

Therefore, the liquid metal as a reaction product can be reacted and treated to become metal oxide particles to be used as a raw material for recycling, so that resources are saved; the hydrogen gas produced at the same time can be used for various purposes. In particular, the liquid metal may be caused to react with water in the second reaction unit 5.

Before the liquid metal is conveyed to the second reaction unit 5, pure liquid metal can be separated by using the second separation unit 7, so that the metal oxide particles can be prepared by using the pure liquid metal, and impurities can be prevented from being introduced.

The method may further comprise:

the mixed gas is separated by the first separation unit 6, and the separated unreacted methane gas is sent to the first reaction unit 1 to participate in the reaction, so that the raw materials are fully utilized and carbon emission is prevented.

According to the above description, the apparatus and method for producing hydrogen of the present invention can achieve at least the following technical effects:

(1) clean solar energy is utilized to provide heat energy, so that the energy is saved and the environment is protected;

(2) a plurality of heat carrying particles are used for collecting and providing heat, and simultaneously, metal oxide particles and methane gas flow in gaps of the heat carrying particles, so that heat exchange is sufficient, and the reaction efficiency is high;

(3) the reacted metal forms a liquid state, can flow freely, is convenient for discharging products, does not need complex extraction and separation equipment, has simple device structure and saves cost;

(4) the methane gas is adopted to produce hydrogen, and the raw material source is wide;

(5) can realize the closed cyclic utilization of reactants, improve the economic benefit and has no carbon emission in the production process.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to be illustrative of embodiments of the invention and should not be construed as limiting the invention. The various components in the drawings are not to scale in order to clearly illustrate the details of the various components, and so the proportions of the various components in the drawings should not be taken as limiting.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.