A steam generator and hydrogen production system thereof

Abstract

The present invention provides a steam generator, the steam generator includes a heat storage device, the heat storage device includes a heat storage body, and has a first end and a second end opposite to each other along its length direction; a plurality of hot exhaust gas transmission channels penetrating the first end and the second end are provided, and at least one gas transmission channel also penetrating the first end and the second end is arranged between the plurality of hot exhaust gas transmission channels. The present invention solves the technical problem of environmental pollution and waste of resources caused by the hot exhaust gas generated by the combustion furnace being directly discharged into the air by the factory. The technical effect of reducing replacement costs and improving the heat utilization rate of hot exhaust gas is achieved.

Description

Technical Field

[0001] The present invention relates to the field of heat storage technology, and in particular to a steam generator and a hydrogen production system thereof. Background Art

[0002] With the limitation of conventional energy and the increasing prominence of environmental problems, new energy with environmental protection and renewable characteristics has been paid more and more attention by various countries. With the limitation of conventional energy and the increasing prominence of environmental problems, new energy with environmental protection and renewable characteristics has been paid more and more attention by various countries. In the research of various new energy sources, hydrogen has become the first choice of researchers due to its completely clean combustion mode and renewable advantages.

[0003] In the prior art, methanol and water are often used as raw materials to prepare hydrogen. In the process of preparing hydrogen, high-temperature devices such as combustion furnaces are often used. Traditional combustion furnaces usually use firewood, coal, diesel, and natural gas as fuel for heating. my country is the country with the largest production and use of coal-fired industrial steam generators in the world today.

[0004] However, if the waste heat of hot exhaust gas is utilized, on the one hand, the hot exhaust gas directly exchanges heat with the heat exchange medium. Since the hot exhaust gas circulates at a fast speed, most of the heat flows away with the hot exhaust gas, resulting in low heat exchange efficiency; on the other hand, when large heat storage bodies are used for waste heat utilization, their inlet ends that contact the hot exhaust gas are prone to blockage, and the overall replacement cost is high; in addition, depending on the application scenario, large heat storage bodies have poor applicability and low versatility. Summary of the invention

[0005] To solve the above problems, the present invention provides a steam generator, which reduces heating costs, realizes the reuse of the hot exhaust gas, and improves heat exchange efficiency, retains most of the heat of the hot exhaust gas, prevents heat waste, improves its versatility, saves costs, etc.

[0006] On the one hand, an embodiment of the present invention provides a steam generator, which includes a heat storage device, wherein the heat storage device includes a heat storage body, which has a first end and a second end opposite to each other along its length direction; a plurality of hot exhaust gas transmission channels passing through the first end and the second end are provided, and at least one gas transmission channel also passing through the first end and the second end is arranged between the plurality of hot exhaust gas transmission channels.

[0007] Furthermore, the heat storage body is formed by splicing a plurality of heat storage components.

[0008] In this embodiment, a heat storage body is formed by splicing a plurality of heat storage elements. When the hot exhaust gas transmission channel of the heat storage body is blocked, only the heat storage element at the first end needs to be replaced, thereby reducing the use cost.

[0009] Furthermore, the present invention provides a steam generator, comprising: a heat storage body having a first end and a second end opposite to each other along its length direction; a plurality of hot exhaust gas transmission channels passing through the first end and the second end, and a plurality of gas transmission channels also passing through the first end and the second end, which are arranged between the plurality of hot exhaust gas transmission channels.

[0010] In this embodiment, by arranging the heat storage body in the steam generator, on the one hand, the heating cost is reduced and the reuse of the hot exhaust gas is achieved; on the other hand, the heat storage body can store the heat in the hot exhaust gas to heat the steam material, thereby achieving the reuse of the hot exhaust gas.

[0011] Furthermore, the steam generator includes: a plurality of steam transmission pipes, each of the steam transmission pipes being arranged in a different gas transmission channel; a steam material holding portion, having a steam material holding space and provided with a steam material inlet connected to the steam material holding space, and being arranged at the first end, and the steam material holding space being connected to the plurality of steam transmission pipes; a steam holding portion, having a steam holding space and provided with a steam outlet connected to the steam holding space, and being arranged at the second end, and the steam holding space being connected to the plurality of steam transmission pipes.

[0012] In this embodiment, the vapor material enters the vapor material storage space of the vapor material storage part through the vapor material inlet, and the vapor generating material is converted into vapor under high temperature and high pressure environment, and the vapor and the vapor generating material enter the vapor transmission pipe. Finally, the vapor enters the vapor storage space of the vapor storage part through the vapor transmission pipe, and is discharged from the vapor outlet of the vapor storage part.

[0013] Furthermore, the steam generator also includes: a first hot waste gas accommodating portion, having a first hot waste gas accommodating space and having a first hot waste gas inlet connected to the first hot waste gas accommodating space, and arranged at the first end, and the first hot waste gas accommodating space is connected to the multiple hot waste gas transmission channels; a first exhaust gas accommodating portion, having a first exhaust gas accommodating space and having a first exhaust gas outlet connected to the first exhaust gas accommodating space, and arranged at the second end, and the first exhaust gas accommodating space is connected to the multiple first hot waste gas transmission channels.

[0014] In this embodiment, the hot exhaust gas enters the first hot exhaust gas storage space of the first hot exhaust gas storage part from the first hot exhaust gas inlet. Then, the hot exhaust gas passes through the multiple hot exhaust gas transmission channels and exchanges heat with the heat storage body to become exhaust gas. Finally, the exhaust gas enters the first exhaust gas storage space of the first exhaust gas storage part from the multiple hot exhaust gas transmission channels and is discharged from the first exhaust gas outlet opened in the first exhaust gas storage part.

[0015] Furthermore, the first hot waste gas accommodating portion is sandwiched between the steam material accommodating portion and the heat storage body; the multiple steam transmission pipelines pass through the first hot waste gas accommodating portion; the first waste gas accommodating portion is sandwiched between the steam material accommodating portion and the heat storage body; the multiple steam transmission pipelines pass through the first waste gas accommodating portion.

[0016] In this embodiment, the gas transmission channel passes through the first hot exhaust gas accommodating portion and the first exhaust gas accommodating portion, so that the hot exhaust gas heats the multiple steam transmission pipelines throughout the process from input to output, thereby reducing the heating cost and realizing the reuse of the hot exhaust gas.

[0017] Furthermore, the steam generator also includes: a heat-insulating sleeve, which is sleeved on the outside of the heat storage body; and an electric heater, which is arranged in the steam containing space and extends into the steam transmission pipeline.

[0018] In this embodiment, the heat-insulating sleeve can block the heat transfer from the steam generator to the external environment, thereby reducing heat loss; and the electric heater can increase the evaporation rate of the steam material.

[0019] Furthermore, the present invention provides a hydrogen production system, comprising: any one of the above-mentioned steam generators; a hydrogen reaction section, which is provided with a hydrogen production space and is arranged in the gas transmission channel, and a hydrogen output port connected to the hydrogen production space is opened at a position close to the first end, and a steam input port connected to the hydrogen production space is opened at a position close to the second end; a hydrogen production catalyst is arranged in the hydrogen production space; a second hot waste gas accommodating section, which has a second hot waste gas accommodating space and has a second hot waste gas inlet connected to the second hot waste gas accommodating space, and is arranged at the first end, and the second hot waste gas accommodating space is connected to the multiple hot waste gas transmission channels; a second waste gas accommodating section, which has a second waste gas accommodating space and has a second waste gas outlet connected to the second waste gas accommodating space, and is arranged at the second end, and the second waste gas accommodating space is connected to the multiple hot waste gas transmission channels.

[0020] In this embodiment, by arranging the heat storage body in the steam generator, on the one hand, the heating cost is reduced and the reuse of the hot exhaust gas is achieved; on the other hand, the heat storage body can store the heat in the hot exhaust gas to heat the hydrogen reaction part, thereby achieving the reuse of the hot exhaust gas.

[0021] Furthermore, the hydrogen production system also includes: a heat-insulating sleeve, which is sleeved on the outside of the heat storage body; and an electric heater, which is arranged in the hydrogen production space.

[0022] In this embodiment, the thermal insulation sleeve can block the heat transfer from the hydrogen production system to the external environment, thereby reducing heat loss; and the electric heater can improve the hydrogen production efficiency in the hydrogen production space.

[0023] Furthermore, the hydrogen reaction part passes through the second hot waste gas storage part, and the hydrogen output port is opened on the side of the second hot waste gas storage part away from the heat storage body; the hydrogen reaction part passes through the second waste gas storage part, and the steam input port is opened on the side of the second waste gas storage part away from the heat storage body.

[0024] In this embodiment, the hydrogen reaction part passes through the second hot exhaust gas storage part and the second exhaust gas storage part, so that the hot exhaust gas heats the hydrogen reaction part throughout the process from input to output, thereby reducing the heating cost and realizing the reuse of the hot exhaust gas.

[0025] Furthermore, the steam outlet of each steam generator is connected to the steam input port.

[0026] After adopting the technical solution of the present invention, the following technical effects can be achieved:

[0027] i) utilizing the heat storage device in the steam generator to absorb and store heat in the hot exhaust gas to improve heat exchange efficiency;

[0028] ii) The heat storage device is configured as a spliced ​​type. When the heat storage device is clogged by particulate matter in the hot exhaust gas, only the heat storage body at the inlet end contacting the hot exhaust gas needs to be replaced, without replacing the entire heat storage device, thereby reducing replacement costs.

[0029] iii) According to different application scenarios, heat storage devices with various splicing methods and shapes are designed to improve the applicability and versatility of the heat storage devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a heat storage device 100 provided in Embodiment 1 of the present invention.

[0031] Figure 2 for Figure 1AA cross-sectional view of the middle heat storage body 10.

[0032] Figure 3 for Figure 1 A top view of the heat storage body 10.

[0033] Figure 4 This is a schematic structural diagram of a second heat storage device 100 provided in Embodiment 1 of the present invention.

[0034] Figure 5 for Figure 4 BB cross-sectional view of the middle heat storage body 10.

[0035] Figure 6 for Figure 4 A top view of the heat storage body 10.

[0036] Figure 7 This is a schematic structural diagram of a third heat storage device 100 provided in Embodiment 1 of the present invention.

[0037] Figure 8 This is a schematic structural diagram of a fourth heat storage device 100 provided in Embodiment 1 of the present invention.

[0038] Fig. 9 This is a schematic structural diagram of a fifth heat storage device 100 provided in Embodiment 1 of the present invention.

[0039] Fig.10 A cross-sectional view of a steam generator 200 provided in Embodiment 2 of the present invention.

[0040] Fig.11 A cross-sectional view of a hydrogen production system 300 provided in Embodiment 3 of the present invention.

[0041] Description of reference numerals:

[0042] 100-heat storage device; 10-heat storage body; 11-first end; 12-second end; 13-hot exhaust gas channel; 14-gas transmission channel; 15-first hot exhaust gas storage part; 151-first hot exhaust gas storage space; 152-first hot exhaust gas inlet; 16-first exhaust gas storage part; 161-first exhaust gas storage space; 162-first exhaust gas outlet; 200-steam generator; 14-steam transmission pipeline; 220-steam material storage part; 221-steam material storage Nanospace; 222-steam material inlet; 230-steam accommodating part; 231-steam accommodating space; 232-steam outlet; 25-second hot exhaust gas accommodating part; 251-second hot exhaust gas accommodating space; 252-second hot exhaust gas inlet; 26-second exhaust gas accommodating part; 261-second exhaust gas accommodating space; 262-second exhaust gas outlet; 300-hydrogen production system; 310-hydrogen reaction part; 311-hydrogen production space; 312-hydrogen output port; 313-steam input port. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] Embodiment 1:

[0045] See also Figures 1 to 9 The heat storage device 100, for example, includes a heat storage body 10. The heat storage body 10 has a first end 11 and a second end 12 opposite to each other along its length direction. Specifically, the heat storage body 10 is provided with a plurality of hot exhaust gas transmission channels 13 and at least one gas transmission channel 14; wherein the hot exhaust gas transmission channels 13 and the gas transmission channels 14 penetrate the first end 11 and the second end 12 of the heat storage body 10; and the gas transmission channels 14 are provided between the plurality of hot exhaust gas transmission channels 13.

[0046] For example, the hot exhaust gas enters from the first end 11, passes through the hot exhaust gas transmission channel 13, and is finally discharged from the second end 12; the gas to be heated enters from the first end 11, passes through the gas transmission channel 14, and is finally discharged from the second end 12; the heat storage body 10 absorbs and stores the heat of the hot exhaust gas, and transfers the heat to the gas to be heated in the gas transmission channel 14, thereby realizing the reuse of the hot exhaust gas and reducing the heating cost.

[0047] Preferably, the heat storage device 100 can be formed by splicing a plurality of heat storage bodies 10. Since the hot exhaust gas carries some dust or particulate matter, the heat storage body 10 needs to be replaced regularly to prevent the hot exhaust gas transmission channel 13 of the heat storage body 10 from being blocked, thereby affecting the heating efficiency of the gas in the gas transmission channel 14. By using a heat storage device 100 spliced ​​by a plurality of heat storage bodies 10, there is no need to replace the entire heat storage device 100.

[0048] For example, when the heat storage device 100 is clogged, it is often clogged at the hot exhaust gas input end, that is, the first end 11. At this time, only the heat storage body 10 near the first end 11 needs to be replaced, and the entire heat storage device 100 does not need to be replaced, thereby saving the cost of replacing the heat storage device 100.

[0049] Furthermore, the heat storage body 10 can be spliced ​​in an up-and-down manner and / or fan-shaped manner; the shape of the heat storage body 10 can be annular or cylindrical, which is not limited here. According to different application scenarios, heat storage devices with multiple splicing methods and multiple shapes are designed, thereby improving the applicability and versatility of the heat storage device.

[0050] Embodiment 2:

[0051] See also Fig.10 , which is a cross-sectional view of a steam generator 200 provided in Embodiment 2 of the present invention. The steam generator 200, for example, comprises: the heat storage body 10 as described in Embodiment 1, a plurality of steam transmission pipes 210, a first hot waste gas receiving portion 15, a steam material receiving portion 220, a first waste gas receiving portion 16, and a steam receiving portion 230.

[0052] The first hot waste gas accommodating portion 15 is provided at the first end 11 of the heat storage body 10; the first hot waste gas accommodating portion 15 has a first hot waste gas accommodating space 151; the first hot waste gas accommodating portion 15 is provided with a first hot waste gas inlet 152 connected to the first hot waste gas accommodating space 151; the first hot waste gas accommodating space 151 is connected to a plurality of hot waste gas transmission channels 13. The first hot waste gas accommodating portion 15 is provided at the first end 11 of the heat storage body 10, so that a buffer area can be formed in the steam generator 200, so that the hot waste gas enters the hot waste gas transmission channel 13 simultaneously and relatively evenly, thereby making the steam material more evenly heated.

[0053] Furthermore, the steam material accommodating part 220 is provided at the first end 11 of the heat storage body 10; the steam material accommodating part 220 has a steam material accommodating space 221; the steam material accommodating part 220 is provided with a steam material inlet 222 connected to the steam material accommodating space 221; the steam material accommodating space 221 is connected to a plurality of steam transmission pipelines 210. The steam material passes into the steam material accommodating space 221 from the steam material inlet 222, exchanges heat with the heat storage body 10, and becomes steam to enter the steam transmission pipeline 210.

[0054] Specifically, the first waste gas accommodating portion 16 is disposed at the second end 12 of the heat storage body 10; the first waste gas accommodating portion 16 has a first waste gas accommodating space 161; the first waste gas accommodating portion 16 is provided with a first waste gas outlet 162 connected to the first waste gas accommodating space 161; the first waste gas accommodating space 161 is connected to a plurality of hot waste gas transmission channels 13. The hot waste gas transfers heat energy to the heat storage body 10 to become waste gas, and the waste gas enters the first waste gas accommodating space 161 of the first waste gas accommodating portion 16 from the hot waste gas transmission channel 13, and is discharged from the first waste gas outlet 162 opened in the first waste gas accommodating space 161.

[0055] The steam receiving portion 230 is disposed at the second end 12 of the heat storage body 10; the steam receiving portion 230 has a steam receiving space 231; and the steam receiving portion 230 is provided with a steam outlet 232 connected to the steam receiving space 231. The steam in the steam transmission pipe 210 enters the steam receiving space 231 of the steam receiving portion 230 and is discharged from the steam outlet 232 provided in the steam receiving space 231.

[0056] Specifically, the first hot waste gas storage part 15 is sandwiched between the steam material storage part 220 and the heat storage body 10; multiple steam transmission pipelines 210 pass through the first hot waste gas storage part 15. The first waste gas storage part 16 is sandwiched between the steam storage part 230 and the heat storage body 10; multiple steam transmission pipelines 210 pass through the first waste gas storage part 16. The hot waste gas heats the multiple steam transmission pipelines 210 throughout the process from input to output, reducing the heating cost and improving the steam preparation efficiency.

[0057] Furthermore, the steam generator 200 also includes a heat-insulating sleeve and an electric heater. The heat-insulating sleeve is sleeved on the outside of the heat storage body 10; the electric heater is arranged in the steam receiving space 231 and extends into the steam transmission pipeline 210. The heat-insulating sleeve can prevent the internal heat transfer between the steam generator 200 and the external environment to prevent heat loss. The electric heater is arranged in the steam receiving space 231, so that the steam material can evaporate into steam more quickly.

[0058] Embodiment three:

[0059] See also Fig.11 , which is a cross-sectional view of a hydrogen production system 300 provided in Embodiment 3 of the present invention. The hydrogen production system 300 includes, for example, the heat storage body 10 as described in Embodiment 1, a hydrogen reaction unit 310, a hydrogen production catalyst, a second hot waste gas receiving unit 25, and a second waste gas receiving unit 26.

[0060] The second hot waste gas accommodating portion 25 is disposed at the first end 11 of the heat storage body 10; specifically, the second hot waste gas accommodating portion 25 has a second hot waste gas accommodating space 251; the second hot waste gas accommodating portion 25 is provided with a second hot waste gas inlet 252 connected to a plurality of second hot waste gas inlets 252. The second exhaust gas accommodating portion 26 is disposed at the second end 12 of the heat storage body 10; the second exhaust gas accommodating portion 26 has a second exhaust gas accommodating space 261; the second exhaust gas accommodating portion 26 is provided with a second exhaust gas outlet 262 connected to a plurality of second exhaust gas accommodating spaces 261.

[0061] The hot exhaust gas enters the second hot exhaust gas inlet 252 from the second hot exhaust gas inlet 252, transfers the heat energy to the heat storage body 10 through the hot exhaust gas transmission channel 13 to become exhaust gas, and the exhaust gas enters the second exhaust gas accommodating space 261 of the second exhaust gas accommodating part 26 from the hot exhaust gas transmission channel 13, and is discharged from the second exhaust gas outlet 262 opened in the second exhaust gas accommodating space 261.

[0062] Furthermore, the hydrogen reaction unit 310 is arranged in the gas transmission channel 14; specifically, a hydrogen production space 311 is provided in the hydrogen reaction unit 310; the hydrogen reaction unit 310 is provided with a hydrogen output port 312 of the hydrogen production space 311 at a position close to the first end 11; the hydrogen reaction unit 310 is provided with a steam input port 313 connected to the hydrogen production space 311 at a position close to the second end 12.

[0063] Furthermore, a hydrogen production catalyst is provided in the hydrogen production space 311. Steam enters the hydrogen production space 311 of the hydrogen reaction part 310 from the steam input port 313, and hydrogen is generated under the joint action of the heat storage body 10 and the hydrogen production catalyst, and the prepared hydrogen is discharged from the hydrogen output port 312. The hydrogen production catalyst can increase the hydrogen production reaction rate, promote the hydrogen production reaction to proceed in the forward direction as much as possible, generate more hydrogen, and thus improve the hydrogen conversion rate.

[0064] Preferably, the hydrogen production system 300 further includes a heat preservation sleeve and an electric heater. The heat preservation sleeve is sleeved on the outside of the heat storage body 10; the electric heater is arranged in the hydrogen production space 311. The heat preservation sleeve can prevent the heat transfer between the inside of the hydrogen production system 300 and the external environment, thereby preventing heat loss. The electric heater can further heat the hydrogen production space 311, realize the diversification of the heating of the hydrogen production system 300, and further improve the hydrogen production efficiency.

[0065] Specifically, the hydrogen reaction part 310 passes through the second hot waste gas storage part 25, and a hydrogen output port 312 is provided on the side of the second hot waste gas storage part 25 away from the heat storage body 10. The hydrogen reaction part 310 passes through the second waste gas storage part 26, and a steam input port 313 is provided on the side of the second waste gas storage part 26 away from the heat storage body 10.

[0066] Further, the hydrogen production system 300 includes any one of the above-mentioned steam generators 200, and the steam outlet 232 of each steam generator 200 is connected to the steam input port 313. For example, the steam produced from the steam generator 200 and reaching the temperature required for production passes through the steam transmission pipeline 210 and the steam receiving portion 230 in sequence, and is finally input into the hydrogen production system 300 from the steam outlet 232. The steam reacts with the hydrogen production catalyst in the hydrogen production system 300 to produce hydrogen, and the hydrogen is output through the hydrogen output port 312.

[0067] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A steam generator, comprising a heat storage device, wherein the heat storage device comprises a heat storage body having a first end and a second end opposite to each other along its length direction; characterized in that: A plurality of hot waste gas transmission channels penetrating the first end and the second end and at least one gas transmission channel also penetrating the first end and the second end are provided in the heat storage body, and the hot waste gas transmission channels are spaced apart from the gas transmission channels. The heat storage device is formed by splicing a plurality of heat storage bodies; The steam generator also includes: a vapor material containing portion, having a vapor material containing space and a vapor material inlet connected to the vapor material containing space, and arranged at the first end, wherein the vapor material containing space is connected to the plurality of gas transmission channels; a steam containing part, having a steam containing space and a steam outlet connected to the steam containing space, and arranged at the second end, wherein the steam containing space is connected to the plurality of gas transmission channels; Wherein, the gas medium flowing in the gas transmission channel is steam, and there are a plurality of gas transmission channels; A first hot waste gas accommodating portion has a first hot waste gas accommodating space and is provided with a first hot waste gas inlet connected to the first hot waste gas accommodating space and is arranged at the first end, the first hot waste gas accommodating space is connected to a plurality of the hot waste gas transmission channels, the first hot waste gas accommodating portion is arranged at the first end of the heat storage body, and can form a buffer area in the steam generator, so that the hot waste gas enters the hot waste gas transmission channel simultaneously and relatively evenly, thereby making the steam material more evenly heated; a first exhaust gas accommodating portion, comprising a first exhaust gas accommodating space and a first exhaust gas outlet connected to the first exhaust gas accommodating space, and arranged at the second end, wherein the first exhaust gas accommodating space is connected to the plurality of hot exhaust gas transmission channels; The first hot waste gas storage part is sandwiched between the steam material storage part and the heat storage body; the plurality of gas transmission channels pass through the first hot waste gas storage part; The first waste gas accommodating portion is sandwiched between the steam accommodating portion and the heat storage body; the plurality of gas transmission channels pass through the first waste gas accommodating portion; The steam generator further comprises a heat-insulating sleeve, which is sleeved on the outside of the heat storage body.

2. The steam generator according to claim 1, characterized in that: The plurality of heat storage body bodies are spliced ​​in an up-and-down manner and / or in a fan-shaped manner.

3. The steam generator according to claim 1 or 2, characterized in that: The shape of the heat storage body is annular or cylindrical.

4. A hydrogen production system, characterized in that: include: The steam generator according to any one of claims 1 to 3; There is one gas transmission channel; A hydrogen reaction part, wherein the hydrogen reaction part is arranged in the gas transmission channel, and a hydrogen production space is arranged in the hydrogen reaction part; the hydrogen reaction part is provided with a hydrogen output port connected to the hydrogen production space at a position close to the first end; the hydrogen reaction part is provided with a steam input port connected to the hydrogen production space at a position close to the second end; The hydrogen production catalyst is arranged in the hydrogen production space.

5. The hydrogen production system according to claim 4, characterized in that: Also includes: A second hot waste gas accommodating portion, comprising a second hot waste gas accommodating space and a second hot waste gas inlet connected to the second hot waste gas accommodating space, and arranged at the first end, wherein the second hot waste gas accommodating space is connected to the plurality of hot waste gas transmission channels; The second exhaust gas accommodating portion has a second exhaust gas accommodating space and a second exhaust gas outlet connected to the second exhaust gas accommodating space, and is arranged at the second end. The second exhaust gas accommodating space is connected to the multiple hot exhaust gas transmission channels.

6. The hydrogen production system according to claim 5, characterized in that: The hydrogen reaction part passes through the second hot waste gas storage part, and the hydrogen output port is opened on a side of the second hot waste gas storage part away from the heat storage body; The hydrogen reaction part passes through the second exhaust gas containing part, and the steam input port is opened on a side of the second exhaust gas containing part away from the heat storage body.

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