CN210973871U

CN210973871U - Hydrogen production machine

Info

Publication number: CN210973871U
Application number: CN201921531982.1U
Authority: CN
Inventors: 张会强
Original assignee: Luoyang Woda Energy Saving Technology Co ltd
Current assignee: Luoyang Woda Energy Saving Technology Co ltd
Priority date: 2019-08-08
Filing date: 2019-09-16
Publication date: 2020-07-10
Anticipated expiration: 2029-09-16
Also published as: CN210973872U; CN211310826U; CN211310827U; CN210795757U; CN210915299U; CN211310825U; CN210915298U

Abstract

The utility model provides a hydrogen manufacturing machine, be in including stove courage and ring cover the outer casing of stove courage, the stove courage includes the oven and is located its combustion chamber be provided with the steam chamber between casing and the stove courage steam chamber upper portion sets up the catalysis room, catalysis room upper portion sets up the gas receiver, the gas receiver be connected with the device that is used for purifying hydrogen, the oven inboard set up a plurality of boiler tubes, it is a plurality of the boiler tube set up to the multilayer cyclic annular, each layer is provided with a plurality of boiler tubes for absorb heat production steam and let in the steam chamber. The utility model discloses can guarantee the good thermal diffusivity of oven under the condition of oven material cost not increased.

Description

Hydrogen production machine

Technical Field

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

Background

With the limited nature of conventional energy and the increasing prominence of environmental issues, new energy with the characteristics of environmental protection and regeneration is gaining more and more attention from various countries. In the research of various new energy sources, hydrogen is the first choice of researchers in a completely clean combustion mode and with the advantage of being renewable. As an ideal new energy source, the hydrogen has the following characteristics:

(1) the hydrogen has high heat release efficiency, can release 14 kilojoules of heat when burning 1 gram of hydrogen, is about 3 times of the heat release when burning 1 gram of gasoline, and can be recycled.

(2) The raw material of the hydrogen is mainly water, and 2 hydrogen atoms exist in 1 water molecule; and 71 percent of the surface of the floor ball is water, so that the resources are very rich.

(3) In the combustion process of hydrogen, besides releasing huge energy, combustion products only contain water, and the combustion products are free of pollution emission and environmental pollution, so that the hydrogen is also called as clean energy.

(4) Hydrogen gas is light in weight, low in density, convenient to transport and carry, easy to store, and has more significant advantages compared with electricity which is difficult to store.

(5) The hydrogen has wide application, can not only generate heat by combustion, but also produce various hydrogen-containing compounds and serve as a heat-absorbing working medium and the like.

Although hydrogen energy has many of the above advantages, the development of hydrogen energy is currently restricted by the high price of hydrogen gas.

In the prior art, a method for preparing hydrogen by using a raw material liquid of methanol and water appears, high-temperature devices such as a combustion furnace and a conventional industrial combustion furnace are required in equipment, the higher the temperature of a hearth is, the higher the requirement on high temperature resistance of furnace wall materials is, and if the high-temperature materials are used, the cost is increased, so that the heat dissipation of the furnace wall is ensured under the condition of not increasing the cost of the furnace wall materials, and the problem which needs to be solved urgently by the combustion furnace for preparing hydrogen is solved.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a hydrogen manufacturing machine can guarantee the good thermal diffusivity of oven under the condition of oven material cost not increasing.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a hydrogen manufacturing machine, is in including stove courage and ring cover the outer casing of stove courage, the stove courage includes the oven and is located its combustion chamber be provided with the steam chamber between casing and the stove courage steam chamber upper portion sets up the catalysis room, catalysis room upper portion sets up the gas receiver, the gas receiver be connected with the device that is used for purifying hydrogen, the oven inboard set up a plurality of boiler tubes, it is a plurality of the boiler tube set up to the multilayer annular, each layer is provided with a plurality of boiler tubes for absorb heat production steam and let in the steam chamber.

Furthermore, a plurality of furnace tubes are arranged in the combustion chamber, and the furnace tubes corresponding to the adjacent rings are arranged in a staggered manner. The furnace tubes are arranged as much as possible, so that heat can be uniformly diffused.

The inner side of the furnace wall is provided with an evaporation space and a raw material liquid chamber, and the evaporation space is communicated with the raw material liquid chamber through a plurality of furnace tubes.

Furthermore, the furnace tubes are provided with first fins, and the first fins are connected between the adjacent furnace tubes, so that the heat dissipation area is increased.

Furthermore, the furnace tube is provided with second fins, and the second fins are arranged towards the combustion chamber, so that the heat dissipation area is increased.

Further, set up first filter plate between steam chamber and the catalysis room for intercommunication steam chamber and catalysis room, set up the second filter plate between catalysis room and the reservoir for intercommunication catalysis room and reservoir.

Further, the evaporation space comprises a steam outlet, which communicates with the inlet of the steam chamber.

Further, the shell comprises an outer shell and an inner shell, and heat preservation or insulation materials are filled between the outer shell and the inner shell.

Further, the combustion chamber comprises a burner and a combustion outlet, the burner is arranged at the upper part or the lower part of the combustion chamber, and the combustion outlet is arranged at the lower part or the upper part of the combustion chamber.

Compared with the prior art, a hydrogen generator have following beneficial effect:

(1) the utility model provides a hydrogen production machine adopts double-layer furnace tubes, so that mixed steam passes through the furnace tubes, and the furnace walls are cooled and radiated, and because the temperature of the combustion chamber is high, the catalyst is prevented from being too high after cooling, so that the catalyst can play a catalytic role to the maximum extent, the alcohol-based raw material can fully carry out chemical reaction, and the raw material liquid is uniformly heated, and the evaporation efficiency is high;

(2) the utility model provides a pair of hydrogen manufacturing machine, because the inside temperature of combustion chamber can reach 2200 ℃, can make gas combustion abundant, produce waste gas few, reduce the pollution of waste gas to the environment in a large number.

(3) The utility model provides a pair of hydrogen manufacturing machine makes the alcohol group raw materials including the methyl alcohol composition be heated and takes place the reaction under the catalyst effect and generate hydrogen for the mist of giving first place to, purifies out hydrogen with mist, and the energy consumption that is needed than synthesis method and electrolysis hydrogen manufacturing is low, and is with low costs.

Drawings

FIG. 1 is a diagram of a hydrogen production plant according to an embodiment of the present invention;

FIG. 2 is a sectional view of a liquid storage tank in a hydrogen production apparatus according to an embodiment of the present invention;

FIG. 3 is a sectional view of a hydrogen production machine according to an embodiment of the present invention;

FIG. 4 is a top view of a section E-E of a hydrogen generator according to an embodiment of the present invention;

FIG. 5 is a sectional view of a second hydrogen generator according to an embodiment of the present invention;

FIG. 6 is a top view of the section A-A of the second hydrogen generator of the present invention.

Description of reference numerals:

1-combustor, 10-shell, 101-outer shell, 102-inner shell, 103, top cover; 1031-outer cover, 1032-inner top wall, 104-base, 1041-outer bottom shell, 1042-inner bottom shell, 11-combustion chamber, 111-furnace wall, 111 a-first fin, 111 b-furnace tube, 111 c-second fin, 1111-first inner wall, 1112-second inner wall, 112-combustion outlet, 115-furnace inner wall, 12-raw material liquid chamber, 121-first interface, 122-second interface, 123-third interface, 124-fourth interface, 125-steam outlet, 126-first safety port, 13-steam chamber, 131-steam inlet, 14-catalysis chamber, 141-first filter plate, 142-second filter plate, 143-input and output port, 144-temperature sensor, 15-gas storage chamber, 151-gas output port, 152-a second safety port, 16-an evaporation space, 17-a combustor, 172-a fuel pipeline, 1721-a fuel inlet, 18-a furnace pipe, 2-a liquid storage tank, 21-a smoke exhaust pipe, 211-a smoke exhaust port, 212-a smoke exhaust interface, 22-a liquid storage cavity, 221-a liquid storage tank interface, 3-a gas storage tank and 31-a hydrogen outlet.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The descriptions in the present application relating to "first", "second", "upper", "middle", "lower", "top", "bottom", etc., are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated. Thus, features defined as "first," "second," "upper," "middle," "lower," "top," "bottom" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments can be combined with each other, but it is necessary to be able to realize that the technical solutions in the embodiments can be combined with each other on the basis of the realization of a person having ordinary skill in the art, and all that is required by the present invention is within the protection scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In the first embodiment, as shown in fig. 1 and 2, a hydrogen production apparatus includes a hydrogen production machine 1, a liquid storage tank 2, and a gas storage tank 3, wherein the liquid storage tank 2 is connected to the hydrogen production machine 1, used for supplementing raw material liquid into the hydrogen production machine 1 so as to maintain the preparation process of hydrogen-containing gas, the gas storage tank 3 is connected with the hydrogen production machine 1, used for collecting the hydrogen-containing gas prepared in the hydrogen production machine 1 and then communicated with a hydrogen purification device to prepare hydrogen, the raw material liquid in the liquid storage tank 2 is a mixed liquid of water and methanol in a certain proportion and is introduced into the hydrogen production machine 1, the mixed liquid of water and methanol in the hydrogen making machine 1 is heated to form mixed steam, the mixed steam is catalyzed by a catalyst to generate chemical reaction to generate mixed gas of hydrogen and carbon monoxide and a small amount of carbon dioxide, wherein, hydrogen is the main hydrogen, which is called hydrogen mixed gas for short, and the generated hydrogen mixed gas is introduced into the gas storage tank 3 for collection.

The hydrogen production machine 1 can also be provided with different raw materials, the raw material liquid can be a mixture of water and alcohols, such as a mixed liquid of water and ethanol, a mixed liquid of water and propanol, or a mixed liquid of methanol, and the like, and the prepared combustible gas is a mixed gas of hydrogen, carbon monoxide and carbon dioxide; the raw material liquid can also be alcohols, such as methanol, ethanol, propanol, glycerol and the like, and the prepared combustible gas is a mixed gas of hydrogen, carbon monoxide and carbon dioxide;

for the arranged catalyst, the corresponding catalyst in the prior art is selected according to different raw material liquid components, for example, the raw material of the hydrogen production machine in this embodiment is water and methanol raw material liquid, the catalyst is a special dehydrogenation catalyst, such as a copper-based catalyst and a nickel-based catalyst, and the general reaction temperature is 200 ℃ to 500 ℃, which is not described herein again in view of that the catalysts are all the prior art.

Similarly, the hydrogen purification apparatus may be an adsorption apparatus in the prior art, such as a conventional pressure swing adsorption separation apparatus, or may be another gas separation apparatus in the prior art, such as a conventional membrane separation apparatus, a low temperature condensation separation apparatus, or the like; since it is a prior art, it is not described herein in detail.

With reference to fig. 1, 3 and 4, the hydrogen production machine 1 mainly includes a housing 10 and an internal furnace 18, the housing 10 includes an outer housing 101 and an inner housing 102, a thermal insulation material is filled between the outer housing 101 and the inner housing 102, a top cover 103 covers the top of the housing 10, a square outer cover 1031 is arranged outside the top cover 103, an inner arched top wall 1032 is arranged inside the top cover 103, a thermal insulation material is filled between the outer cover 1031 and the inner top wall 1032, a base 104 is arranged at the bottom of the hydrogen production machine 1, an outer bottom shell 1041 is arranged outside the base 104, an inner bottom shell 1042 is arranged inside the base 104, and a fire-resistant material is arranged between.

The furnace 18 of the hydrogen production machine 1 comprises a furnace wall 111, the furnace wall 111, an inner top wall 1032 of the top cover 103 and an inner bottom shell 1042 enclose a cavity, the cavity is provided with an evaporation space 16, a combustion chamber 11 and a raw material liquid chamber 12 from top to bottom in sequence, and the evaporation space 16 is communicated with the raw material liquid chamber 12 through a plurality of furnace tubes 111b arranged in the combustion chamber 11; the bottom of the raw material liquid chamber 12 is provided with a second interface 122 and a third interface 123, the top of the evaporation space 16 is provided with a first interface 121 and a steam outlet 125, a liquid level device is arranged between the first interface 121 and the second interface 122, a liquid supplementing port is arranged in the third interface 123 and used for adding raw material liquid, the liquid level device is connected between the two interfaces with height difference, the liquid level device is not limited between the first interface 121 and the second interface 122, and the functions of other interfaces can be adjusted according to actual needs.

The upper part of the combustion chamber 11 is provided with a burner 17, the burner 17 can be introduced with combustible and ignited, so that the combustible is combusted in the combustion chamber 11 to generate heat, and the periphery of the burner 17 is filled with refractory materials; the lower part of the furnace wall 111 is provided with a combustion outlet 112 for discharging flue gas generated after the combustible is combusted; the bottom of the combustion chamber 11 is filled with refractory material and a fourth port 124 is provided for blowdown.

The furnace tubes 111b are circular tubes, the plurality of furnace tubes 111b are annularly arranged and are arranged in two layers to form a first inner wall 1111 and a second inner wall 1112, the first inner wall 1111 comprises a plurality of furnace tubes 111b, a plurality of first fins 111a and a plurality of second fins 111c, the second fins 111c are connected between two adjacent furnace tubes 111b in a latitudinal direction, each furnace tube 111b is connected with the first fin 111a in a radial direction, the first fin 111a faces the center of the furnace tube 18, the second inner wall 1112 comprises a plurality of furnace tubes 111b, a plurality of first fins 111a and a plurality of second fins 111c, the second fins 111c are connected between two adjacent furnace tubes 111b in a latitudinal direction, each furnace tube 111b is connected with the first fins 111a in a radial direction, the first fins 111a face the center of the furnace tube 18, the upper portions of the furnace tubes 111b are connected with the furnace tubes 111, the lower portions of the furnace tubes 111b are connected with the lower portions of the furnace tubes 111, the plurality of the first inner wall 1111 and the plurality of, the first fins 111a and the second fins 111c are used to increase the heat dissipation area, and the connection manner of the furnace tube 111b and the first fins 111a and the second fins 111c is preferably welding.

An annular space is arranged between the inner shell 102 and the furnace wall 111, the inner top wall 1032 and the inner bottom shell 1042, the space is sequentially provided with an air storage chamber 15, a catalytic chamber 14 and an evaporation chamber 13 from top to bottom, the lower part of the steam chamber 13 is provided with a steam inlet 131 which is communicated with a steam outlet 125 through a pipeline, mixed steam discharged from the steam outlet 125 is led into the steam chamber 13, the bottom of the catalytic chamber 14 is connected with the steam chamber 13 and is provided with a first filter plate 141 which filters the mixed steam, the filtered mixed steam enters the catalytic chamber 14, the catalytic chamber 14 is filled with a catalyst, the mixed steam is heated under the action of the catalyst to form hydrogen mixed gas, the top of the catalytic chamber 14 is connected with the air storage chamber 15 and is provided with a second filter plate 142 which filters the generated hydrogen mixed gas and then is led into the air storage chamber 15, the space below the steam chamber 13 and the interlayer 114 is connected with, interface 151 intercommunication gas holder 3 gives vent to anger collects hydrogen with the leading-in gas holder 3 of hydrogen gas mixture to export through hydrogen export 31, purify hydrogen after being connected with hydrogen purification device, gas holder 3 still has the effect of regulating pressure in addition.

As shown in fig. 2, the liquid storage tank 2 includes at least two chambers, one is a liquid storage chamber 22, the other is a smoke exhaust pipe 21, the liquid storage chamber 22 is provided with a liquid storage tank interface 221, and is connected to the third interface 123 through a pipeline to supplement the raw material liquid in the raw material liquid chamber 12 of the hydrogen production machine 1; the bottom of the smoke exhaust pipe 21 is provided with a smoke exhaust interface 212, the top of the smoke exhaust pipe 21 is provided with a smoke exhaust port 211, the smoke exhaust interface 212 is connected with the combustion outlet 112, a smoke extractor is arranged on the smoke exhaust port 211, smoke combusted in the combustion chamber 11 is exhausted from the smoke exhaust port 211 at the top through the smoke exhaust pipe 21, the smoke can adsorb cigarette ash in the smoke exhaust pipe 21, and emission of harmful substances is reduced.

And the pipe 21 that discharges fume sets up inside stock solution chamber 22, thereby form heat transfer structure between the inside stock solution chamber 22 of liquid storage pot 2 and the pipe 21 of discharging fume for tail gas that produces in the combustion chamber 11 preheats the raw materials liquid in the stock solution chamber 22 at the exhaust in-process, can carry out abundant recycle to used heat.

The specific hydrogen production process is that the raw material liquid in the liquid storage tank 2 flows into the third interface 123 through the liquid storage tank interface 221, enters the raw material liquid chamber 12 at the bottom of the hydrogen production machine 1, the combustion chamber 11 is ignited to burn to provide heat, the liquid in the raw material liquid chamber 12 is heated to generate mixed steam, the mixed steam enters the evaporation space 16 through the multilayer furnace tube 111b, and is guided into the steam inlet 131 through the steam outlet 125, and enters the steam chamber 13, the mixed steam is filtered through the first filter plate 141 and enters the catalysis chamber 14, the mixed gas of hydrogen is generated through reaction under the action of a catalyst, the mixed gas of hydrogen primarily filters impurities through the second filter plate 142 and enters the gas storage chamber 15, so that the gas flow is prevented from flowing out with catalyst particles, and enters the gas storage tank 3 through the gas outlet 151.

In the second embodiment, as shown in fig. 5 and fig. 6, the hydrogen production machine 1 includes a furnace 18 and a shell 10 sleeved outside the furnace, the shell 10 is enclosed into a cylinder, the shell 10 includes an outer shell 101 and an inner shell 102, the inner shell 102 extends to the top to form an arched top surface, and a heat insulating material is filled between the outer shell 101 and the inner shell 102; the furnace pipe 18 of the hydrogen production machine 1 comprises a furnace wall 111 and a combustion chamber 11 positioned in the furnace wall 111, the furnace wall 111 surrounds to form a cylindrical cavity, the combustion chamber 11 is arranged inside, the top of the furnace wall 111 extends to form an arch, an evaporation space 16 is arranged at the upper part of the inner side of the furnace wall 111, the inner side of the evaporation space 16 is a furnace inner wall 115, a raw material liquid chamber 12 is arranged at the lower part of the inner side of the furnace wall 111, the inner side of the raw material liquid chamber 12 is a furnace inner wall 115, the furnace inner wall 115 extends to form an arch towards the top, a plurality of furnace tubes 111b are arranged at the middle part of, the first inner wall 1111 comprises a plurality of furnace tubes 111b, a plurality of first fins 111a and a plurality of second fins 111c, the second fins 111c are connected between two adjacent furnace tubes 111b in a weft direction, each furnace tube 111b is connected with the first fin 111a in the radial direction, and the first fins 111a face one side of the furnace inner wall 115; the second inner wall 1112 comprises a plurality of furnace tubes 111b, a plurality of first fins 111a and a plurality of second fins 111c, the second fins 111c are connected between two adjacent furnace tubes 111b in a weft direction, each furnace tube 111b is connected with the first fin 111a in a radial direction, the first fins 111a face one side of the inner wall 115 of the furnace, the plurality of furnace tubes 111b of the first inner wall 1111 and the plurality of furnace tubes 111b of the second inner wall 1112 are arranged in a staggered and spaced mode, the first fins 111a and the second fins 111c are used for increasing the heat dissipation area, the upper part of the inner wall 115 of the furnace is communicated with the combustion outlet 112, and the furnace tubes 111b are preferably welded with the first fins 111a and the second fins 111c in a connection mode.

The combustor 17 is connected to the lower portion of the combustion chamber 11, the combustor 17 is arranged in a space surrounded by the lower portion of the furnace wall 111, a bottom shell 104 is arranged on the outer ring of the combustor 17, a refractory material is filled in the bottom shell 104, a fuel pipeline 172 is connected to the bottom shell, a fuel inlet 1721 is formed in the fuel pipeline 172 and used for introducing gas or liquid fuel, an ignition device is arranged on the combustor 17, and preferably, the ignition device can automatically ignite, and flame detection can be performed after ignition is completed.

An evaporation space 16 is arranged between the upper part of the furnace wall 111 and the upper part of the inner wall 115 of the furnace, a raw material liquid chamber 12 is arranged between the lower part of the furnace wall 111 and the lower part of the inner wall 115 of the furnace, the raw material liquid chamber 12 is communicated with the evaporation space 16 through a plurality of furnace tubes 111b, and raw material liquid or mixed steam is introduced into the middle of the furnace tubes 111b and used for cooling the outer wall 113 of the furnace, so that the temperature is prevented from being overhigh, and the activity of the catalyst.

The bottom of the raw material liquid chamber 12 is provided with a first interface 121 and a fourth interface 124, the top of the evaporation space 16 is provided with a second interface 122 and a third interface 123, the side wall of the evaporation space 16 is provided with a steam outlet 125, a liquid level device is arranged between the first interface 121 and the second interface 122, the fourth interface 124 is a sewage discharge outlet and used for discharging waste liquid, a liquid supplementing port is arranged in the third interface 123 and used for adding raw material liquid, and the raw material liquid enters the evaporation space 16 and enters the raw material liquid chamber 12 through a furnace tube 111 b.

The liquid level device is connected between two interfaces with height difference, not only limited between the first interface 121 and the second interface 122, but also the functions of other interfaces can be adjusted according to actual needs.

A steam chamber 13, a catalytic chamber 14 and an air storage chamber 15 are sequentially and annularly arranged from bottom to top between the furnace wall 111 and the inner shell 102, a steam inlet 131 is arranged at the lower part of the steam chamber 13 and is communicated with a steam outlet 125 through a pipeline, mixed steam discharged from the steam outlet 125 is led into the steam chamber 13, a first filter plate 141 is arranged at the position, connected with the steam chamber 13, of the bottom of the catalytic chamber 14 and is used for filtering the mixed steam, the filtered mixed steam enters the catalytic chamber 14, a catalyst is filled in the catalytic chamber 14, the mixed steam is heated under the action of the catalyst to form mixed gas of hydrogen and carbon monoxide, a second filter plate 142 is arranged at the position, connected with the air storage chamber 15, of the top of the catalytic chamber 14 and is used for filtering the generated mixed gas of hydrogen and is led into the air storage chamber 15, an air outlet port 151 and a second safety port 152 are arranged at the upper part of the air storage chamber 15, the air outlet port, the pressure stability of the hydrogen mixed gas in the hydrogen production machine 1 is ensured.

The other settings are the same as the first embodiment.

In the above embodiment, the bottom of the inner shell 102 is an arched bottom surface or a flat bottom surface, the top of the inner shell 102 is arranged to be a flat top surface or an arched top surface, the bottom of the furnace wall 111 is an arched bottom surface or a flat bottom surface, and the top of the furnace wall 111 is arranged to be a flat top surface or an arched top surface.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hydrogen generator, is in including stove courage (18) and ring cover casing (10) outside stove courage (18), stove courage (18) are including oven (111) and combustion chamber (11) that are located it, characterized in that be provided with steam chamber (13) between casing (10) and stove courage (18) steam chamber (13) upper portion sets up catalytic chamber (14), catalytic chamber (14) upper portion sets up gas storage chamber (15), gas storage chamber (15) be connected with the device that is used for purifying hydrogen, oven (111) inboard set up a plurality of boiler tubes (111b), a plurality of boiler tube (111b) set up to the multilayer annular, each layer is provided with a plurality of boiler tubes for absorb heat and produce steam and let in steam chamber (13).

2. The hydrogen generator according to claim 1, wherein a plurality of the furnace tubes (111b) are arranged in the combustion chamber (11), and the furnace tubes (111b) corresponding to adjacent rings are arranged in a staggered manner.

3. The hydrogen generator according to claim 2, characterized in that an evaporation space (16) and a raw material liquid chamber (12) are provided inside the furnace wall (111), and the evaporation space (16) is communicated with the raw material liquid chamber (12) through a plurality of furnace tubes (111 b).

4. The hydrogen production machine according to claim 3, wherein the furnace tubes (111b) are provided with first fins (111a), and the first fins (111a) are connected between adjacent furnace tubes (111 b).

5. The hydrogen generator according to claim 3, wherein the furnace tube (111b) is provided with a second fin (111c), and the second fin (111c) is arranged towards the combustion chamber (11).

6. The hydrogen generator as claimed in claim 1, characterized in that a first filter plate (141) is arranged between the steam chamber (13) and the catalytic chamber (14) for communicating the steam chamber (13) with the catalytic chamber (14), and a second filter plate (142) is arranged between the catalytic chamber (14) and the gas storage chamber (15) for communicating the catalytic chamber (14) with the gas storage chamber (15).

7. The hydrogen generator according to claim 3, characterized in that the evaporation space (16) comprises steam vents (125), the steam vents (125) communicating with the inlet of the steam chamber (13).

8. The hydrogen production machine according to claim 1, characterized in that the housing (10) comprises an outer housing (101) and an inner housing (102), and a thermal insulation material is filled between the outer housing (101) and the inner housing (102).

9. The hydrogen generator according to claim 1, characterized in that the combustion chamber (11) comprises a burner (17) and a combustion outlet (112), wherein the burner (17) is arranged at the upper part or the lower part of the combustion chamber (11), and the combustion outlet (112) is arranged at the lower part or the upper part of the combustion chamber (11).

10. The hydrogen production machine according to claim 8, characterized in that the top of the inner shell (102) is provided with a flat-top or arched top surface, and the top of the furnace wall (111) is provided with a flat-top or arched top surface.