CN218465503U

CN218465503U - Hydrogen production system

Info

Publication number: CN218465503U
Application number: CN202222720927.5U
Authority: CN
Inventors: 张建威; 卢进
Original assignee: Suzhou Gaomai New Energy Co ltd
Current assignee: Suzhou Gaomai New Energy Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2023-02-10
Anticipated expiration: 2032-10-14

Abstract

The utility model discloses a hydrogen production system relates to industry hydrogen preparation facilities field, and its technical scheme main points are: one includes methanol-water compounding jar, vaporizer, reformer, heat exchanger, purification device and is used for carrying out the combustor that heats vaporizer and reformer, methanol-water compounding jar, vaporizer, reformer, heat exchanger and purification device pass through the connecting pipe and connect in proper order, the combustor passes through the air supply pipe and connects on being located the connecting pipe between reformer and heat exchanger, be provided with the orifice plate in the air supply pipe, be connected with the air-blower that is used for to the air feed in the combustor on being located the air supply pipe between orifice plate and the combustor, be located between methanol-water compounding jar and the vaporizer still be provided with nitrogen gas on the connecting pipe and let in the device. The utility model has the advantages of simple structure, less heat loss, low energy consumption and low system operation cost.

Description

Hydrogen production system

Technical Field

The utility model relates to an industry hydrogen preparation facilities field, more specifically say, it relates to a hydrogen system.

Background

Hydrogen is the most widely used industrial gas, widely used in the fields of petroleum, chemical industry, electronics, medicine, etc., and is called factory blood. The preparation method of the hydrogen comprises the traditional hydrogen production by water electrolysis, hydrogen production by hydrogen-rich tail gas purification, and hydrogen production by cracking, decomposing and reforming of natural gas, coal, ammonia, methanol, heavy oil and the like which are used as raw materials, wherein the hydrogen production by methanol reforming is more applied due to the advantages of convenient raw material source, easy operation and the like.

An existing hydrogen production device is shown in fig. 2, and the technical points are as follows: include methanol-water blending tank 1, vaporizer 2, reformer 3, heat exchanger 4, purification device 5 and be used for carrying out the combustor 6 that heats to vaporizer 2 and reformer 3 through connecting pipe connection in proper order, combustor 6 passes through air supply pipe 10 and connects between heat exchanger 4 and purification device 5, be provided with governing valve 11 on the air supply pipe 10.

When the equipment works, methanol water is heated by the vaporizer 2 to form high-temperature steam, the high-temperature steam is subjected to catalytic reaction by the reformer 3 to generate hydrogen, carbon dioxide and a small amount of carbon monoxide mixed gas after the catalytic reaction, the mixed gas is called high-temperature hydrogen-rich gas, the high-temperature hydrogen-rich gas forms hydrogen-rich gas in a normal temperature state by the heat exchanger 4, the hydrogen-rich gas in the normal temperature state is divided into two paths, one path of the hydrogen-rich gas enters the purifying device 5 to be purified to obtain high-purity hydrogen, and the other path of the hydrogen-rich gas enters the combustor 6 to be combusted after being regulated and controlled by the throttle valve 11 according to preset flow, so that required working heat is provided for the vaporizer 2 and the reformer 3.

Among the above-mentioned equipment, governing valve 11 generally transfers for the low temperature, and governing valve 11 can't tolerate the high temperature, if the high-temperature gas of forcing in, causes very easily to adjust inefficacy, consequently in the working process, the hydrogen-rich gas body of normal atmospheric temperature state just accessible governing valve 11 to finally burn in getting into combustor 6, the hydrogen-rich gas body of high temperature can lose a large amount of heats after the cooling, can improve the energy consumption of system, increase cost.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a hydrogen production system has simple structure, and calorific loss is few, the energy consumption is low, the advantage with low costs of system operation.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a hydrogen production system, includes methanol-water blending tank, vaporizer, reformer, heat exchanger, purification device and is used for carrying out the combustor that heats to vaporizer and reformer, methanol-water blending tank, vaporizer, reformer, heat exchanger and purification device pass through the connecting pipe and connect in proper order, the combustor passes through the air supply pipe and connects on being located the connecting pipe between reformer and heat exchanger, be provided with the orifice plate in the air supply pipe, be connected with the air-blower that is used for to the air feed in the combustor on being located the air supply pipe between orifice plate and the combustor, be located between methanol-water blending tank and the vaporizer still be provided with nitrogen gas on the connecting pipe and let in the device.

In one embodiment, the orifice plate is a circular plate, the outer circumferential wall of the circular plate is tightly matched with the inner circumferential wall of the air supply pipe, the circular plate is coaxial with the air supply pipe, and the circular plate is provided with a vent hole at the axis.

In one embodiment, the nitrogen gas introducing device comprises a nitrogen gas pipe connected with the connecting pipe and an electromagnetic valve arranged on the nitrogen gas pipe and used for controlling the on-off of the nitrogen gas in the nitrogen gas pipe.

In one embodiment, the purification apparatus is a PSA hydrogen purification apparatus.

In one embodiment, a raw material delivery pump is arranged on the connecting pipe between the methanol-water mixing tank and the nitrogen pipe.

In one embodiment, the hydrogen production system further comprises a preheater for initial heating of the vaporizer and reformer.

To sum up, the utility model discloses following beneficial effect has: the utility model discloses the during operation, the methanol-water forms high temperature steam after the vaporizer heating, carry out catalytic reaction through the reformer, generate hydrogen behind the catalytic reaction, carbon dioxide and a small amount of carbon monoxide mist, this mist is called high temperature hydrogen-rich gas body, this high temperature hydrogen-rich gas body falls into two the tunnel, through the orifice plate all the way and get into the combustor internal combustion according to the flow value that the orifice plate predetermines, in order to be the vaporizer, the reformer provides required work heat, another way is through the heat exchanger, becomes the hydrogen-rich gas body of normal atmospheric temperature, this hydrogen-rich gas body gets into the purification device purification and obtains high-purity hydrogen, the utility model discloses the hydrogen-rich gas body in the entering combustor, not through the cooling of heat exchanger, the direct combustion has reduced heat loss, has reduced the energy consumption, has reduced the cost of system operation, whole hydrogen manufacturing process, has saved the governing valve of controlling hydrogen-rich gas body flow, what simple structure and cost were lower throttle orifice plate, make the utility model discloses a structure is simpler, and small in size is more exquisite.

Drawings

FIG. 1 is a schematic diagram of a hydrogen production system according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a hydrogen production apparatus in the prior art.

In the figure: 1. a methanol-water mixing tank; 2. a vaporizer; 3. a reformer; 4. a heat exchanger; 5. a purification device; 6. a burner; 7. a restriction orifice plate; 8. a blower; 9. introducing nitrogen into the device; 91. a nitrogen gas pipe; 92. an electromagnetic valve; 10. a gas supply pipe; 11. and adjusting the valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present application provides a hydrogen production system, including a methanol-water mixing tank 1, a vaporizer 2, a reformer 3, a heat exchanger 4, a purification device 5, and a burner 6 for heating the vaporizer 2 and the reformer 3, wherein the methanol-water mixing tank 1, the vaporizer 2, the reformer 3, the heat exchanger 4, and the purification device 5 are sequentially connected by a connection pipe, and the burner 6 is connected to a connection pipe between the reformer 3 and the heat exchanger 4 by a gas supply pipe 10. Be provided with orifice plate 7 in the air supply pipe 10, be connected with the air-blower 8 that is used for the air feed in the combustor 6 on the air supply pipe 10 that is located between orifice plate 7 and the combustor 6, be located between methanol-water compounding jar 1 and the vaporizer 2 still be provided with nitrogen gas on the connecting pipe and let in device 9.

During operation, methanol water is heated by the vaporizer 2 to form high-temperature steam, the high-temperature steam is subjected to catalytic reaction by the reformer 3 to generate a mixed gas of hydrogen, carbon dioxide and a small amount of carbon monoxide after the catalytic reaction, the mixed gas is called as a high-temperature hydrogen-rich gas, the high-temperature hydrogen-rich gas is divided into two paths, one path of the high-temperature hydrogen-rich gas passes through the throttle orifice 7 and enters the combustor 6 to be combusted according to a flow value preset by the throttle orifice 7 to provide required working heat for the vaporizer 2 and the reformer 3, the other path of the high-temperature hydrogen-rich gas passes through the heat exchanger 4 to be changed into normal-temperature hydrogen-rich gas, and the hydrogen-rich gas enters the purifying device 5 to be purified to obtain high-purity hydrogen.

In this way, get into the hydrogen-rich gas body in the combustor 6, do not pass through the cooling of heat exchanger 4, direct combustion has reduced calorific loss, has reduced the energy consumption, has reduced the cost of system's operation, and whole hydrogen manufacturing process has saved the governing valve 11 of the hydrogen-rich gas body flow of control, and the substitute is simple structure and the lower throttle orifice 7 of cost, makes the utility model discloses a structure is simpler, and is small in size more.

On the above basis, the orifice plate 7 is a circular plate, the outer circumferential wall of the circular plate is tightly matched with the inner circumferential wall of the gas supply pipe 10, the circular plate is coaxial with the gas supply pipe 10, and the circular plate is located at the axis and provided with a vent hole. The orifice plate 7 is used for controlling the flow rate of the hydrogen-rich gas entering the burner 6, and the size of the diameter of the vent hole determines the flow rate through which the hydrogen-rich gas can pass.

On the basis, the nitrogen gas introducing device 9 comprises a nitrogen gas pipe 91 connected with the connecting pipe and an electromagnetic valve 92 arranged on the nitrogen gas pipe 91 and used for controlling the on-off of nitrogen gas in the nitrogen gas pipe 91, wherein the electromagnetic valve 92 can be periodically switched on and off to ensure that the air content is lower than the lower explosion limit.

Because hydrogen has inflammable and explosive characteristics, the whole system heating in-process does not allow the air to get into, otherwise has the explosion risk, and this system during operation, orifice plate 7 communicates with each other with external atmosphere all the time, and nitrogen gas lets in the setting of device 9, can sweep whole system through nitrogen gas, can discharge the air of sneaking into, has avoided the risk of explosion to nitrogen gas itself is inert gas, can not influence the hydrogen manufacturing ability of this system.

On the basis, the purification device 5 is a PSA hydrogen purification device 5. The PSA purification apparatus is also called a pressure swing adsorption hydrogen purification apparatus, which specifically uses the prior art and is not described in detail in this embodiment.

On the basis, a raw material delivery pump is arranged between the methanol-water mixing tank 1 and the nitrogen pipe 91 on the connecting pipe. The raw material delivery pump is used for pressurizing the methanol water so as to enhance the pressure after the methanol water enters the raw material delivery pump.

On the basis of the above, the hydrogen production system further comprises a pre-heater for initially heating the vaporizer 2 and the reformer 3, and the pre-heater may be an electric heating wire, a heating rod, or the like.

In the above-described embodiment, when the hydrogen-rich gas that can be ignited is not generated in the combustor 6 at the initial stage of the reaction in the hydrogen generation system, the preheater heats the vaporizer 2 and the reformer 3, and when the hydrogen-rich gas is ignited in the combustor 6, the preheater stops operating.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims

1. The utility model provides a hydrogen production system, includes methanol-water blending tank (1), vaporizer (2), reformer (3), heat exchanger (4), purification device (5) and is used for carrying out combustor (6) that heats vaporizer (2) and reformer (3), methanol-water blending tank (1), vaporizer (2), reformer (3), heat exchanger (4) and purification device (5) are connected its characterized in that through the connecting pipe order: combustor (6) are connected on being located the connecting pipe between reformer (3) and heat exchanger (4) through air supply pipe (10), be provided with orifice plate (7) in air supply pipe (10), be located and be connected with air-blower (8) that are used for air feed in combustor (6) on air supply pipe (10) between orifice plate (7) and combustor (6), be located between methanol-water compounding jar (1) and vaporizer (2) still be provided with nitrogen gas on the connecting pipe and let in device (9).

2. The hydrogen generation system of claim 1, wherein: the orifice plate (7) is a circular plate, the peripheral wall of circular plate closely cooperates with the internal perisporium of air supply pipe (10), the circular plate is coaxial with air supply pipe (10), the circular plate is located its axis department and has seted up the air vent.

3. The hydrogen production system of claim 1, wherein: the nitrogen introducing device (9) comprises a nitrogen pipe (91) connected with the connecting pipe and an electromagnetic valve (92) arranged on the nitrogen pipe (91) and used for controlling the on-off of nitrogen in the nitrogen pipe (91).

4. The hydrogen production system of claim 1, wherein: the purification device (5) is a PSA hydrogen purification device.

5. The hydrogen production system of claim 1, wherein: and a raw material delivery pump is arranged between the methanol-water mixing tank (1) and the nitrogen pipe (91) on the connecting pipe.

6. The hydrogen generation system of claim 1, wherein: the hydrogen production system further comprises a pre-heater for initial heating of the vaporizer (2) and the reformer (3).