CN215711772U

CN215711772U - Hydrogen production system

Info

Publication number: CN215711772U
Application number: CN202120009161.2U
Authority: CN
Inventors: 张会强
Original assignee: Guangdong Alcohol Hydrogen New Energy Research Institute Co Ltd
Current assignee: Sichuan Woyouda Technology Co ltd
Priority date: 2020-12-10
Filing date: 2021-01-05
Publication date: 2022-02-01
Anticipated expiration: 2031-01-05
Also published as: CN112551485A; CN214299265U; CN114623427A; CN214745624U; CN112577031A; CN112661109A; CN112577034A; CN214700630U; CN214536110U; CN214936049U; CN214468510U; CN114620679A; CN216630747U; CN216844627U; CN214468520U; CN215112519U; CN216638915U; CN114620677A; CN114620678B; CN216549620U

Abstract

The utility model provides a hydrogen production system, which comprises at least one steam generator, a hydrogen storage tank and a hydrogen generator, wherein the steam generator is provided with a steam outlet; at least one hydrogen reactor connected to the steam generator and provided with a steam inlet; the steam generator and the hydrogen reactor are internally communicated with hot waste gas, and the steam generator and the hydrogen reactor are annularly arranged or arranged side by side. The utility model utilizes the hot waste gas to heat the hydrogen production device, thereby reducing the heating cost of the hydrogen production device and realizing the reutilization of the hot waste gas.

Description

Hydrogen production system

Technical Field

The utility model relates to the technical field of chemical equipment, in particular to a hydrogen production system.

Background

With the limited nature of conventional energy and the increasing projection of environmental problems, new energy with the characteristics of environmental protection and regeneration is more and more paid attention from various countries. In the research of various new energy sources, hydrogen becomes the first choice of researchers in a completely clean combustion mode and the advantage of being capable of being regenerated, and in the hydrogen production process, strict requirements on the hydrogen production environment are required to be met so as to cause accidents.

In the conventional hydrogen production process, methanol and water are generally used as raw material liquids, and a high-temperature apparatus such as a combustion furnace is used to heat the reaction to produce hydrogen. However, the combustion of the combustion furnace requires a large amount of fuel, the hot exhaust gas generated by combustion is directly discharged, the heating cost is high, and the heat in the hot exhaust gas is wasted.

SUMMERY OF THE UTILITY MODEL

To solve the above problems, the present invention provides a hydrogen production system comprising: at least one steam generator provided with a steam outlet; at least one hydrogen reactor connected to the steam generator and provided with a steam inlet; the steam generator and the hydrogen reactor are arranged annularly or in parallel. The steam generator with the inside of hydrogen reactor all leads to there is hot waste gas, just steam generator with the hydrogen reactor is the annular setting or sets up side by side.

The technical effect achieved after the technical scheme is adopted is as follows: heating the steam material in the steam reactor by the heat of the hot waste gas to generate steam required by hydrogen production reaction and discharging the steam through the steam outlet; and the steam discharged by the steam reactor enters the hydrogen reactor through the steam inlet, and the steam in the hydrogen reactor is heated through hot waste gas and reacts to generate hydrogen. The heating cost is reduced, and the recycling of the hot waste gas is realized.

Further, the steam generator and the hydrogen reactor are both provided with heat storage components, and the heat storage components are provided with a first end and a second end which are opposite along the length direction of the heat storage components; a plurality of hot waste gas transmission channels which penetrate through the first end and the second end and at least one gas transmission channel which also penetrates through the first end and the second end are arranged in the heat storage assembly, and the hot waste gas transmission channels and the gas transmission channels are arranged at intervals.

The technical effect achieved after the technical scheme is adopted is as follows: the thermal storage assembly is capable of absorbing and storing heat from the hot exhaust gas and heating the steam in the steam generator and the steam in the hydrogen reactor.

Furthermore, the heat storage assembly is formed by splicing a plurality of heat storage assemblies.

The technical effect achieved after the technical scheme is adopted is as follows: form the heat accumulation subassembly through the concatenation of a plurality of heat accumulation pieces, work as when the hot waste gas transmission path of heat accumulator is plugged up, only need change the heat accumulation piece of first end, and then reduce use cost.

Further, the steam generator includes: a plurality of vapor delivery lines, each of said vapor delivery lines being disposed in a different one of said gas delivery channels; the vapor material accommodating part is provided with a vapor material accommodating space, is provided with a vapor material inlet communicated with the vapor material accommodating space, is arranged at the first end, and is communicated with the at least one gas transmission channel; the steam accommodating part is provided with a steam accommodating space, is provided with a steam outlet communicated with the steam accommodating space, is arranged at the second end, and is communicated with the at least one gas transmission channel.

The technical effect achieved after the technical scheme is adopted is as follows: the vapor material enters the vapor material accommodating space of the vapor material accommodating portion through the vapor material inlet, the vapor generating material is converted into vapor under a high-temperature and high-pressure environment, and the vapor generating material enter the vapor transmission pipeline. Finally, the vapor enters the vapor accommodation space of the vapor accommodation part through the vapor transmission pipe and is discharged from the vapor outlet of the vapor accommodation part.

Further, the steam generator further includes: the first hot waste gas accommodating part is provided with a first hot waste gas accommodating space, is provided with a first hot waste gas inlet communicated with the first hot waste gas accommodating space, and is arranged at the first end, and the first hot waste gas accommodating space is communicated with the plurality of hot waste gas transmission channels; the first waste gas containing part is provided with a first waste gas containing space, is provided with a first waste gas outlet communicated with the first waste gas containing space and is arranged at the second end, and the first waste gas containing space is communicated with the plurality of hot waste gas transmission channels.

The technical effect achieved after the technical scheme is adopted is as follows: the hot exhaust gas enters the first hot exhaust gas accommodating space of the first hot exhaust gas accommodating portion from the first hot exhaust gas inlet. Then, the heat is exchanged with the heat storage body through the plurality of hot exhaust gas transfer channels to become exhaust gas. Finally, the exhaust gas enters the first exhaust gas accommodating space of the first exhaust gas accommodating part from the plurality of hot exhaust gas conveying channels and is discharged from the first exhaust gas outlet formed in the first exhaust gas accommodating part.

Further, the hydrogen reactor comprises: the hydrogen reaction part is internally provided with a hydrogen production space and is arranged in the gas transmission channel; a hydrogen outlet communicated with the hydrogen production space is formed in the position, close to the first end, of the hydrogen reaction part; a steam input port communicated with the hydrogen production space is formed in the position, close to the second end, of the hydrogen reaction part; and the hydrogen production catalyst is arranged in the hydrogen production space.

The technical effect achieved after the technical scheme is adopted is as follows: and a hydrogen production catalyst is arranged in the hydrogen production space and is used for reacting with steam generated by the steam generator to produce hydrogen.

Further, the hydrogen reactor comprises: a second hot exhaust gas receiving part having a second hot exhaust gas receiving space, opened with a second hot exhaust gas inlet communicating with the second hot exhaust gas receiving space, and provided at the first end, the second hot exhaust gas receiving space communicating with the plurality of hot exhaust gas transfer passages; and the second waste gas accommodating part is provided with a second waste gas accommodating space and is provided with a second waste gas outlet communicated with the second waste gas accommodating space, and the second waste gas outlet is arranged at the second end and communicated with the plurality of hot waste gas transmission channels.

The technical effect achieved after the technical scheme is adopted is as follows: the hot waste gas passes through the second hot waste gas inlet, the second hot waste gas containing space, the hot waste gas transmission channel and the second waste gas containing space in sequence and is finally discharged from the second waste gas outlet. The temperature of the hydrogen reactor is maintained by heating the hot waste gas, and the hot waste gas is recycled, so that the energy-saving effect is realized.

Further, the hydrogen reaction part penetrates through the second hot waste gas accommodating part, and a hydrogen output port is formed in one side, far away from the heat storage component, of the second hot waste gas accommodating part; the hydrogen reaction part penetrates through the second waste gas accommodating part, and the steam input port is formed in one side, far away from the heat storage assembly, of the second waste gas accommodating part.

The technical effect achieved after the technical scheme is adopted is as follows: the hydrogen reaction part penetrates through the second hot waste gas containing part and the second waste gas containing part, so that the hydrogen reaction part is heated in the whole process from input to output of hot waste gas, the heating cost is reduced, and the hot waste gas is recycled.

Further, the hydrogen production system further comprises: the first heat-preservation sleeve is sleeved outside the plurality of steam transmission pipelines; and the second heat-insulating sleeve is sleeved outside the hydrogen reaction part.

The technical effect achieved after the technical scheme is adopted is as follows: arranging a first heat-preserving sleeve outside the steam transmission pipeline, wherein the first heat-preserving sleeve slows down heat loss of the steam transmission pipeline; and a second heat-insulating sleeve is arranged outside the hydrogen reaction part and can slow down heat loss of the hydrogen reaction part.

Further, the hydrogen production system further comprises: and the electric heater is arranged in the hydrogen reaction part.

The technical effect achieved after the technical scheme is adopted is as follows: and when the heat of the hot waste gas is not enough to enable the steam to react to generate hydrogen, starting the electric heater to heat the hydrogen reaction part, and enabling the temperature of the hydrogen reaction part to be always kept in a temperature state required by hydrogen production.

In summary, the above embodiments of the present application may have one or more of the following advantages or benefits:

(1) the hydrogen production device is heated by utilizing the hot waste gas, so that the heating cost of the hydrogen production device is reduced, and the reutilization of the hot waste gas is realized.

(2) The heat storage component is used for absorbing and storing the heat in the hot waste gas, and the heating efficiency of the hot waste gas is improved.

Drawings

Fig. 1 is a schematic structural diagram of a hydrogen production system 400 according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of hydrogen production system 400 shown in FIG. 1 from another perspective.

Fig. 3 is a schematic structural view of the thermal storage assembly 300.

Fig. 4 is a cross-sectional view a-a of the thermal mass body 310 of fig. 3.

Fig. 5 is a top view of the thermal mass body 310 of fig. 4.

Fig. 6 is a schematic structural view of a second thermal storage assembly 300.

Fig. 7 is a cross-sectional view of the thermal mass body 310 of fig. 6.

Fig. 8 is a top view of the thermal mass body 310 of fig. 6.

Fig. 9 is a schematic structural view of a third thermal storage assembly 300.

Fig. 10 is a schematic structural view of a fourth thermal storage assembly 300.

Fig. 11 is a schematic structural view of a fifth thermal storage assembly 300.

Fig. 12 is a sectional view of the steam generator 100.

Fig. 13 is a sectional view of the hydrogen reactor 200.

Description of reference numerals:

100-a steam generator; 110-a vapor transmission conduit; 120-a vapor material receptacle; 121-vapor material containment space; 122-vapor material inlet; 130-a vapor containment; 131-a vapor-containing space; 132-a vapor outlet; 140-a first hot exhaust gas receptacle; 141-a first hot exhaust gas receiving space; 142-a first hot exhaust gas inlet; 150-a first exhaust gas containment; 151-first exhaust gas containing space; 152-a first exhaust outlet;

200-a hydrogen reactor; 210-a hydrogen reaction part; 211-a hydrogen production space; 212-hydrogen gas outlet; 213-a vapor input port; 220-a second hot exhaust gas receptacle; 221-a second hot exhaust gas receiving space; 222-a second hot exhaust gas inlet; 230-a second exhaust gas receiving part; 231 — a second exhaust gas receiving space; 232-a second exhaust gas outlet;

300-a thermal storage component; 310-a thermal mass body; 311-a first end; 312-a second end; 313-hot exhaust gas transfer channel; 314-a gas delivery channel; 400-hydrogen production system.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1 and 2, a hydrogen production system 400 includes, for example, one steam generator 100 and two hydrogen reactors 200 connected to the steam generator 100. Wherein, the steam generator 100 is provided with a steam outlet, the hydrogen reactor 200 is provided with a steam inlet, and the steam prepared by the steam generator 100 enters the hydrogen reactor 200 through the steam outlet, the steam transmission pipeline and the steam inlet in sequence.

Specifically, the steam generator 100 heats the steam material by using the heat of the hot exhaust gas to generate steam required for the hydrogen production reaction, and discharges the steam through a steam outlet; the steam discharged from the steam generator 100 enters the hydrogen reactor 200 through the steam inlet, and the steam in the hydrogen reactor 200 is heated by the hot exhaust gas and reacts to generate hydrogen. For example, the steam generator 100 and the hydrogen reactor 200 may be disposed annularly or side by side, and are not limited herein.

Further, heat storage assemblies 300 are provided in both the steam generator 100 and the hydrogen reactor 200. The thermal storage assembly 300 has a first end 311 and a second end 312 opposite to each other along the length direction. Specifically, the heat storage assembly 300 is provided with a plurality of hot exhaust gas transfer passages 313 and at least one gas transfer passage 314; the hot exhaust gas transfer passage 313 and the gas transfer passage 314 penetrate through the first end 311 and the second end 312 of the heat storage assembly 300; the gas transfer passages 314 are interposed between the plurality of hot exhaust gas transfer passages 313.

For example, the hot exhaust gas enters from the first end 311, passes through the hot exhaust gas transfer passage 313, and finally exits from the second end 312; the gas to be heated enters from the first end 311, passes through the gas transmission channel 314, and finally exits from the second end 312; the heat storage assembly 300 absorbs and stores heat of the hot exhaust gas, and transfers the heat to the gas to be heated in the gas transmission channel 314, so that the hot exhaust gas is recycled, and the heating cost is reduced.

Preferably, the thermal storage assembly 300 may be formed by splicing a plurality of thermal storage body bodies 310. Since the hot exhaust gas carries some dust or particles, the heat accumulator body 310 needs to be replaced regularly to prevent the hot exhaust gas transfer passage 313 of the heat accumulator body 310 from being blocked and affecting the heating efficiency of the gas in the gas transfer passage 314. The use of the heat storage module 300 in which a plurality of heat storage body bodies 310 are joined together eliminates the need to replace the entire heat storage module 300.

For example, when the heat storage assembly 300 is clogged, the clogging tends to occur at the hot exhaust gas input end, i.e., the first end 311. At this time, only the heat storage body 310 near the first end 311 needs to be replaced, and the entire heat storage assembly 300 does not need to be replaced, thereby saving the cost of replacing the heat storage assembly 300.

Further, the heat accumulator body 310 may be spliced up and down and/or in a sector shape; the shape of the heat accumulator body 310 may be annular or cylindrical, and is not limited herein. According to different application scenes, the heat storage devices in various splicing modes and shapes are designed, so that the applicability and the universality of the heat storage device are improved.

Further, referring to fig. 3 to 12, the steam generator 100 includes, for example: a plurality of vapor transmission pipes 110, a first hot exhaust gas containing part 140, a vapor material containing part 120, a first exhaust gas containing part 150, and a vapor containing part 130.

Wherein the first hot exhaust gas receiver 140 is provided at the first end 311 of the heat storage module 300; the first hot exhaust gas accommodating part 140 has a first hot exhaust gas accommodating space 141; the first hot exhaust gas accommodating part 140 is opened with a first hot exhaust gas inlet 142 communicated with the first hot exhaust gas accommodating space 141; the first hot exhaust gas accommodating space 141 communicates with the plurality of hot exhaust gas transfer passages 313. The provision of the first hot exhaust gas receiving portion 140 at the first end 311 of the thermal storage assembly 300 provides a buffer area within the steam generator 100 for allowing the hot exhaust gases to simultaneously and relatively uniformly enter the hot exhaust gas transfer passage 313, thereby allowing the vapor material to be heated more uniformly.

Further, the vapor material containing portion 120 is provided at the first end 311 of the thermal storage member 300; the vapor material containing portion 120 has a vapor material containing space 121; the vapor material accommodating part 120 is provided with a vapor material inlet 122 communicated with the vapor material accommodating space 121; the vapor material accommodating space 121 communicates with the plurality of vapor transmission pipes 110. The vapor material passes from the vapor material inlet 122 into the vapor material containing space 121 and exchanges heat with the thermal storage assembly 300 to become vapor that enters the vapor transmission conduit 110.

Specifically, the first exhaust gas receiver 150 is provided at the second end 312 of the heat storage assembly 300; the first exhaust gas containing part 150 has a first exhaust gas containing space 151; the first exhaust gas accommodating part 150 is opened with a first exhaust gas outlet 152 communicated with the first exhaust gas accommodating space 151; the first exhaust gas accommodating space 151 communicates with a plurality of hot exhaust gas transfer passages 313. The hot exhaust gas transfers heat energy to the heat storage module 300 to become exhaust gas, and the exhaust gas enters the first exhaust gas receiving space 151 of the first exhaust gas receiving portion 150 from the hot exhaust gas transfer passage 313 and is discharged from the first exhaust gas outlet 152 formed in the first exhaust gas receiving space 151.

Wherein the vapor-receiving portion 130 is provided at the second end 312 of the thermal storage assembly 300; the vapor accommodation portion 130 has a vapor accommodation space 131; the vapor storage 130 is opened with a vapor outlet 132 communicating with the vapor storage space 131. The vapor in the vapor transmission pipe 110 enters the vapor accommodation space 131 of the vapor accommodation part 130 and is discharged from the vapor outlet 132 opened in the vapor accommodation space 131.

Specifically, the first hot exhaust gas containing portion 140 is interposed between the vapor material containing portion 120 and the heat storage module 300; the plurality of vapor transmission pipes 110 pass through the first hot exhaust gas accommodating part 140. The first exhaust gas containing section 150 is interposed between the vapor containing section 130 and the heat storage module 300; the plurality of vapor transmission pipes 110 pass through the first exhaust gas containing part 150. In the process from input to output of the hot exhaust gas, the plurality of steam transmission pipelines 110 are heated in the whole process, so that the heating cost is reduced, and the steam preparation efficiency is improved.

Further, the steam generator 100 further includes a heat insulating sleeve and an electric heater. Wherein, the heat-preserving sleeve is sleeved outside the heat storage component 300; the electric heater is disposed in the vapor-containing space 131 and extends into the vapor transmission line 110. The thermal sleeve prevents heat transfer between the interior of the steam generator 100 and the external environment, preventing heat loss. Providing the electric heater in the vapor-containing space 131 enables the vapor material to be more rapidly evaporated into vapor.

Referring to fig. 13, a cross-sectional view of a hydrogen production system 300 according to a third embodiment of the present invention is shown. Hydrogen production system 300 includes, for example: the heat storage assembly 300, the hydrogen reaction part 210, the hydrogen production catalyst, the second hot exhaust gas container 220, and the second exhaust gas container 230.

Wherein the second hot exhaust gas receiver 220 is provided at the first end 311 of the heat storage module 300; specifically, the second hot exhaust gas accommodating part 220 has a second hot exhaust gas accommodating space 221; the second hot exhaust gas receiving portion 220 is opened with a second hot exhaust gas inlet 222 communicating with the plurality of second hot exhaust gas receiving spaces 221. The second exhaust gas receiver 230 is provided at the second end 312 of the heat storage assembly 300; the second exhaust gas containing part 230 has a second exhaust gas containing space 231; the second exhaust gas accommodating part 230 is opened with a second exhaust gas outlet 232 communicating with the plurality of second exhaust gas accommodating spaces 231.

The hot exhaust gas enters the second hot exhaust gas inlet 222 from the second hot exhaust gas inlet 222, the heat energy is transferred to the heat storage assembly 300 through the hot exhaust gas transfer passage 313 to become exhaust gas, and the exhaust gas enters the second exhaust gas accommodating space 231 of the second exhaust gas accommodating portion 230 from the hot exhaust gas transfer passage 313 and is discharged from the second exhaust gas outlet 232 formed in the second exhaust gas accommodating space 231.

Further, the hydrogen reaction part 210 is provided in the gas delivery passage 14; specifically, a hydrogen production space 211 is provided in the hydrogen reaction part 210; the hydrogen reaction part 210 is provided with a hydrogen output port 212 of the hydrogen production space 211 at a position close to the first end 311; the hydrogen reaction part 210 is provided with a steam input port 213 near the second end 312 and communicated with the hydrogen production space 211.

Further, a hydrogen production catalyst is provided in the hydrogen production space 211. The steam enters the hydrogen production space 211 of the hydrogen reaction part 210 from the steam input port 213, hydrogen is generated under the combined action of the heat storage assembly 300 and the hydrogen production catalyst, and the prepared hydrogen is discharged from the hydrogen output port 212. The hydrogen production catalyst can improve the hydrogen production reaction rate, promote the hydrogen production reaction to proceed towards the positive direction as much as possible, generate more hydrogen and further improve the hydrogen conversion rate.

Preferably, hydrogen production system 300 also includes a thermal sleeve and an electric heater. Wherein, the heat-preserving sleeve is sleeved outside the heat storage component 300; the electric heater is disposed in the hydrogen production space 211. The heat-insulating sleeve can prevent the heat transfer between the interior of the hydrogen production system 300 and the external environment, and prevent the heat loss. The electric heater can further heat the hydrogen production space 211, so that the heating diversification of the hydrogen production system 300 is realized, and the hydrogen production efficiency is further improved.

Specifically, the hydrogen reaction part 210 passes through the second hot exhaust gas receiving part 220, and a hydrogen outlet 212 is opened at a side of the second hot exhaust gas receiving part 220 away from the heat storage assembly 300. The hydrogen reaction part 210 passes through the second exhaust gas receiving part 230, and a vapor input port 213 is opened at a side of the second exhaust gas receiving part 230 away from the heat storage assembly 300.

Further, the hydrogen production system 300 includes any of the vapor generators 100 described above, with the vapor outlet 132 of each vapor generator 100 communicating with the vapor input port 213. For example, the steam produced from the steam generator 100 and reaching the temperature required for production passes through the steam transmission pipeline 110 and the steam accommodating part 130 in sequence, and is finally input into the hydrogen production system 300 from the steam outlet 132, and the steam reacts with the hydrogen production catalyst in the hydrogen production system 300 to generate hydrogen, and the hydrogen is output through the hydrogen output port 212.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. A hydrogen production system, comprising:

at least one steam generator provided with a steam outlet;

at least one hydrogen reactor connected to the steam generator and provided with a steam inlet;

the steam generator and the hydrogen reactor are internally communicated with hot waste gas, and the steam generator and the hydrogen reactor are annularly arranged or arranged side by side.

2. The hydrogen generation system of claim 1, wherein the steam generator and the hydrogen reactor each include a thermal storage assembly having first and second opposite ends along a length thereof;

a plurality of hot waste gas transmission channels which penetrate through the first end and the second end and at least one gas transmission channel which also penetrates through the first end and the second end are arranged in the heat storage assembly, and the hot waste gas transmission channels and the gas transmission channels are arranged at intervals.

3. The hydrogen generation system of claim 2, wherein the heat storage assembly is formed by splicing a plurality of heat storage assemblies.

4. The hydrogen generation system of claim 2 or 3, wherein the vapor generator comprises:

a plurality of vapor delivery lines, each of said vapor delivery lines being disposed in a different one of said gas delivery channels;

the vapor material accommodating part is provided with a vapor material accommodating space, is provided with a vapor material inlet communicated with the vapor material accommodating space, is arranged at the first end, and is communicated with the at least one gas transmission channel;

the steam accommodating part is provided with a steam accommodating space, is provided with a steam outlet communicated with the steam accommodating space, is arranged at the second end, and is communicated with the at least one gas transmission channel.

5. The hydrogen generation system of claim 4, wherein the vapor generator further comprises:

the first hot waste gas accommodating part is provided with a first hot waste gas accommodating space, is provided with a first hot waste gas inlet communicated with the first hot waste gas accommodating space, and is arranged at the first end, and the first hot waste gas accommodating space is communicated with the plurality of hot waste gas transmission channels;

the first waste gas containing part is provided with a first waste gas containing space, is provided with a first waste gas outlet communicated with the first waste gas containing space and is arranged at the second end, and the first waste gas containing space is communicated with the plurality of hot waste gas transmission channels.

6. The hydrogen generation system of claim 5, wherein the hydrogen reactor comprises:

the hydrogen reaction part is internally provided with a hydrogen production space and is arranged in the gas transmission channel; a hydrogen outlet communicated with the hydrogen production space is formed in the position, close to the first end, of the hydrogen reaction part; a steam input port communicated with the hydrogen production space is formed in the position, close to the second end, of the hydrogen reaction part;

and the hydrogen production catalyst is arranged in the hydrogen production space.

7. The hydrogen generation system of claim 6, wherein the hydrogen reactor further comprises:

a second hot exhaust gas receiving part having a second hot exhaust gas receiving space, opened with a second hot exhaust gas inlet communicating with the second hot exhaust gas receiving space, and provided at the first end, the second hot exhaust gas receiving space communicating with the plurality of hot exhaust gas transfer passages;

and the second waste gas accommodating part is provided with a second waste gas accommodating space and is provided with a second waste gas outlet communicated with the second waste gas accommodating space, and the second waste gas outlet is arranged at the second end and communicated with the plurality of hot waste gas transmission channels.

8. The hydrogen production system as claimed in claim 7,

the hydrogen reaction part penetrates through the second hot waste gas accommodating part, and a hydrogen output port is formed in one side, far away from the heat storage assembly, of the second hot waste gas accommodating part;

the hydrogen reaction part penetrates through the second waste gas accommodating part, and the steam input port is formed in one side, far away from the heat storage assembly, of the second waste gas accommodating part.

9. The hydrogen production system of claim 8, further comprising:

the first heat-preservation sleeve is sleeved outside the plurality of steam transmission pipelines;

and the second heat-insulating sleeve is sleeved outside the hydrogen reaction part.

10. The hydrogen production system of claim 8, further comprising:

and the electric heater is arranged in the hydrogen reaction part.