JP4410489B2 - Hydrogen production equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hydrogen production apparatus, and more particularly to a structure of a hydrogen permeation reaction tube constituting the same and a unit in which the hydrogen permeation reaction tubes are laminated.
[0002]
[Prior art]
Based on FIG. 12 and FIG. 13, an example of a conventional hydrogen production apparatus will be described. FIG. 12 is a schematic perspective view showing a part of a conventional hydrogen production apparatus in a cutaway view, and FIG. 13 is a schematic cross-sectional view taken along arrow GG in FIG.
[0003]
As an example of conventional hydrogen production equipment, raw material gas consisting of hydrocarbons such as methane and methanol and oxygen-containing hydrocarbons is mainly produced by steam reforming reaction and CO shift reaction to produce hydrogen and carbon dioxide, and hydrogen permeability Some metal membranes selectively separate and recover hydrogen. The thinner the hydrogen-permeable metal film is, the higher the performance is. For example, as described in JP-A-9-255306 (Patent Document 1), the thickness is 2 to 50 μm, which is a very thin nonporous thin film. is there. The reforming catalyst used in such a hydrogen production apparatus is generally in the form of particles.
[0004]
For example, a conventional hydrogen production apparatus 100 disclosed in Japanese Patent Application Laid-Open No. 6-321503 (Patent Document 2), as shown in FIG. 12 and FIG. An intermediate cylinder 103 and an inner cylinder 104, and the outer cylinder 102, the intermediate cylinder 103, and the inner cylinder 104 form an upright cylindrical shape. A second annular space 105 is formed between the cylinder 103 and the inner cylinder 104.
[0005]
A pre-reformer 106 is provided above the second annular space 105, and a catalyst layer 111 filled with the reforming catalyst c is formed in the second annular space 105 below the second annular space 105, and a hydrogen separation membrane. A plurality of modules 107 are arranged concentrically. The hydrogen separation membrane module 107 includes a third space portion 108 in which an outer wall and an inner wall having a metal membrane selectively permeating hydrogen with a support reinforcing member made of a stainless steel mesh and a stainless steel nonwoven fabric as a carrier are defined. A sweep gas pipe 118 is inserted into the third space 108 in each hydrogen separation membrane module 107.
[0006]
The combustion gas burner 109 burns the fuel gas introduced through the combustion gas pipe 110 with air in the inner cylindrical hollow portion 112, and converts the heat energy required for the steam reforming reaction into the second annular space portion 105. The catalyst layer 111 is supplied and maintained at a predetermined temperature. The combustion gas exits from the combustion gas outlet 115 through the space between the inner cylinder hollow portion 112, the bottom 101 of the outer cylinder 102, and the annular bottom 113 of the second annular space 105, and then through the first annular space 114. However, the catalyst layer 111 is heated in the meantime.
[0007]
A process feed gas composed of light hydrocarbons or a mixed gas of methanol gas and water vapor is introduced from a feed gas inlet 116 provided at the upper part of the second annular space portion 105, and a part thereof is hydrogen in the pre-reforming portion 106. And then flows into the catalyst layer 111 and is converted to hydrogen at a high temperature. The produced hydrogen is selectively separated and collected by permeating into the hydrogen separation membrane module 107, and flows out from the hydrogen outlet 119 provided in the upper portion thereof together with the sweep gas via the third space 108.
[0008]
The sweep gas is fed from the sweep gas inlet 117 at the top of the apparatus, flows down the sweep gas pipe 118, then flows into the third space 108 from the lower end opening, and rises along with the permeated hydrogen while sweeping the hydrogen gas. Spill from. The hydrogen partial pressure on the permeation side of the third space 108 is kept low by flowing the sweep gas and causing the hydrogen to flow out so as to extrude it. On the other hand, unreacted source gas that has passed through the catalyst layer 111, generated CO, CO₂The gas flows out of the system through an offgas outlet 121 via an offgas pipe 120 having an opening below the catalyst layer 111.
[0009]
However, the conventional upright cylindrical hydrogen production apparatus 100 as described above has the following problems.
[0010]
Since the combustion gas burner 109 is installed in the center, the structure is such that heat is not easily transmitted to the outer side in the width direction of the hydrogen separation membrane module 107 arranged concentrically. It becomes a factor which reduces performance.
[0011]
Since the hydrogen separation membrane module 107 is disposed concentrically, the central furnace space (inner cylinder hollow portion 112) is large, which prevents the hydrogen production apparatus 100 from being made compact.
[0012]
In addition, the reformer cylinder itself is a welded pressure vessel, and the hydrogen separation membrane module cannot be replaced.
[0013]
[Patent Document 1]
JP-A-9-255306 (page 3)
[Patent Document 2]
JP-A-6-321503 (4th and 5th pages, FIGS. 4 and 5)
[0014]
[Problems to be solved by the invention]
The present invention eliminates the problems of such a conventional upright cylindrical hydrogen production apparatus, enables efficient heating, prevents a decrease in hydrogen permeation performance, enables compactness, and allows maintenance, processing, production, and assembly. It is an object of the present invention to provide an easy hydrogen production apparatus.
[0015]
[Means for Solving the Problems]
  (1) The present invention has been made to solve the above problems, and as its first means, hydrogen is generated from a process gas by a catalyst by heating with combustion gas, and only hydrogen is selectively permeated. In a hydrogen production apparatus that takes out hydrogen generated by a hydrogen separation membrane module that is partitioned by a metal membrane that forms a permeate space inside, the hydrogen separation membrane module is incorporated into each reaction tube of a plurality of reaction tubes.And a plurality of protrusions extending in the axial direction of the reaction tube on the surface of the reaction tube, and a plurality of the reaction tubes stacked so that the protrusions abut each other to flow a combustion gas The outer periphery is unitized with a pressure-resistant memberA hydrogen production apparatus is provided.
[0016]
  According to the first means, since the hydrogen separation membrane module is incorporated in each reaction tube of the plurality of reaction tubes, the reaction part is efficiently heated by flowing the combustion gas along the body part of the reaction tube. Therefore, the hydrogen permeation performance is prevented from being lowered, and the hydrogen production apparatus can be configured as a unit by stacking a plurality of reaction tubes, and the maintenance of the hydrogen separation membrane module and the like can be performed for each reaction tube.
In addition, a solid reactor unit can be created and the combustion gas flow path around the reaction tube is secured by the protrusions, enabling efficient heating and preventing hydrogen permeation performance from being lowered, enabling maintenance on a unit basis. Become.
(2) As a second means, a hydrogen separation membrane module in which hydrogen is generated from a process gas by a catalyst by heating with a combustion gas and is partitioned by a metal membrane that selectively permeates only hydrogen to form a permeate space inside. In the hydrogen production apparatus for taking out the hydrogen generated by the above, a plurality of the hydrogen separation membrane modules are incorporated in each reaction tube of the plurality of reaction tubes, and extend in the axial direction of the reaction tube on the reaction tube surface A plurality of the reaction tubes are stacked so as to sandwich the support member, and a flow path for flowing combustion gas is formed between the reaction tubes and the outer peripheral portion is unitized by a pressure-resistant member. A hydrogen production apparatus is provided.
According to the second means, a strong reactor unit can be formed and the combustion gas flow path around the reaction tube can be secured by the support member, the reaction tube can be made simple, and efficient heating can be achieved. The permeation performance is prevented from being lowered, and unit-by-unit maintenance becomes possible.
[0017]
  (3No.3As the means, the first meansOr second meansThe hydrogen production apparatus is characterized in that the hydrogen separation membrane module and the reaction tube are rectangular.
[0018]
  First3According to the means, the first meansOr second meansIn addition to the above action, the reaction tube has a rectangular shape. By stacking and arranging the tubes, a large combustion section (furnace) is not required, making the hydrogen production system more compact and making the hydrogen separation membrane module rectangular. In this case, since other components can also be rectangular, process gas bypass can be reduced.
[0019]
  (4) Also,4As the means, the first means~ 3rdMeansAny one ofIn the hydrogen production apparatus, a plurality of reaction tubes are arranged and stacked so that a flow path for flowing combustion gas is formed between the reaction tubes, and the outer peripheral portion is covered with a pressure-resistant member to form a unit. A hydrogen production apparatus is provided.
[0020]
  First4According to the means, the first means~ 3rdThe means ofAny one ofIn addition to the action, a robust reactor unit is created and a combustion gas flow path around the reaction tube is secured, enabling efficient heating, preventing a decrease in hydrogen permeation performance, and enabling unit-by-unit maintenance .
[0025]
  (5No.5As a means of1st means to 4thAny of the meansOneIn the hydrogen production apparatus, a combustion part that generates the combustion gas on one side of a unit group consisting of a plurality of units, and a process gas, produced hydrogen, and off-gas piping to the reaction tube on the other side of the unit group And a hydrogen production apparatus comprising a header.
[0026]
  First5According to the means of1st means to 4thAny of the meansOneIn addition to the above operation, the hydrogen production apparatus can be configured compactly, enabling highly efficient hydrogen production, and facilitating the processing, production, assembly and maintenance of the hydrogen reaction apparatus.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
A hydrogen production apparatus according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view showing a cutaway portion of a comb-toothed torso-plate type hydrogen permeation reaction tube, which is a main part of a hydrogen production apparatus according to a first embodiment of the present invention, and FIG. FIG. 3 is a side cross-sectional view taken along the line AA, and FIG. 3 is an enlarged cross-sectional view taken along the line BB in FIG. Note that FIG. 1 corresponds to a CC arrow view in FIG. FIG. 4 is a cross-sectional view of a hydrogen permeation reactor unit in which a plurality of comb-tooth body plate-type hydrogen permeation reaction tubes (headers and the like are omitted) shown in the same direction as FIG. 3 are stacked, and FIG. 5 is a hydrogen permeation reactor unit and unit. 6 is a perspective view showing the positional relationship with the header, FIG. 6 is a cross-sectional plan view showing the connection structure between the hydrogen permeation reactor unit and the unit header as viewed in the direction of arrow D in FIG. 5, and FIG. It is a composition conceptual diagram of the hydrogen production device of a 1st embodiment of the case.
[0028]
As shown in FIGS. 1 to 3, a body comb-shaped hydrogen permeation reaction tube (hereinafter simply referred to as “hydrogen permeation reaction tube”), which is a main part of the hydrogen production apparatus 50 (see FIG. 7) of the present embodiment. 1) has a completely sealed square cylindrical (rectangular) casing 2, and the casing 2 has a rectangular parallelepiped by a casing body 2a, a casing side wall 2b, a casing front end 2c, and a casing rear end 2d. Forming.
[0029]
The casing body 2a has a plurality of flow path support protrusions 2e ("projections" of the present invention) extending on the surface in parallel with the cylindrical axis direction of the rectangular cylindrical body of the casing 2, as shown in FIG. As shown and described later, when a plurality of the hydrogen permeation reaction tubes 1 are stacked one above the other, the channel support protrusions 2e are abutted and a gap is formed between the channel support projections 2e. Is formed with a flow path in the cylinder axis direction and functions as a high-temperature combustion gas flow path 22 and a pressure support member.
[0030]
The hydrogen permeation reaction tube 1 is partitioned by a metal membrane (hydrogen permeable metal membrane) that selectively permeates only hydrogen, and a hydrogen separation membrane module 3 that forms a permeate side space inside, and a steam reforming reaction. The forming catalyst 4 to be performed is arranged in parallel with the cylinder axis direction, and a pre-reforming portion 5 filled with a pre-reforming catalyst is formed inside the casing rear end 2d side. In FIG. 1, reference numeral 6 denotes a partition plate that partitions the preliminary reforming section.
[0031]
As shown in FIG. 1, a process gas supply pipe 7 for supplying a process gas (hydrocarbon or a mixed gas of methanol gas and water vapor) x and an off-gas z such as an unreacted process gas are provided at the casing front end 2c. An off-gas pipe 9 for discharging and a hydrogen extracting pipe 8 for taking out the manufactured product hydrogen y pass therethrough. The off-gas pipe 9 opens to the inside of the casing front end 2c, and the process gas supply pipe 7 extends to the preliminary catalyst section 5 on the casing rear end 2d side. In addition, the production hydrogen extraction pipe 8 communicates with the hydrogen separation membrane module 3. The other ends of the pipes 7, 8 and 9 are connected to a unit header 30 which will be described later for collecting the respective gases.
[0032]
The process gas x is supplied from the process gas supply pipe 7 to the hydrogen permeation reaction tube 1 configured as described above, and first enters the pre-reformer 5, and a part of the process gas x is converted into hydrogen in advance. In addition, local heating of the hydrogen separation membrane module 3 is suppressed by heat absorption in the reaction, and the internal temperature is kept uniform. Thereafter, the hydrogen y passes through the partition plate 6 and flows through the gap between the molded catalyst 4 and the hydrogen separation membrane module 3, and only the hydrogen y produced by the steam reforming reaction by the molded catalyst 4 is transferred to the hydrogen separation membrane module 3. It is selectively separated by a hydrogen permeable metal membrane (not shown), recovered in the hydrogen separation membrane module 3, and taken out from the hydrogen extraction pipe 8. Further, the unreacted offgas z exits the gap and is taken out from the offgas pipe 9.
[0033]
As shown in FIG. 4, a plurality of hydrogen permeation reaction tubes 1 (three examples are shown in the figure) are stacked and sandwiched between reactor unit frames 21 to form one pressure-resistant hydrogen permeation reactor unit 20. To do. In the stacked state, as described above, the combustion gas flow path 22 is formed between the hydrogen permeation reaction tubes 1 by the flow path support protrusions 2e, and a high-temperature combustion gas from the combustion section 53 described later flows. Is configured to promote the reaction.
[0034]
The process gas supply pipe 7, the production hydrogen extraction pipe 8, and the off-gas pipe 9 of each hydrogen permeation reaction tube 1 of the hydrogen permeation reactor unit 20 are unit headers to be described later for collecting gas from each unit for each gas. 30. The conceptual diagram is shown in FIGS. 6 and 6, the hydrogen permeation reactor unit 20 shows only a plurality of stacked hydrogen permeation reaction tubes 1, and pressure-resistant members such as the reactor unit frame 21 surrounding the hydrogen permeation reaction tube 1 are not shown. is doing.
[0035]
As shown in FIG. 7, the hydrogen production apparatus 50 of the present embodiment is a unit that forms the heart of the hydrogen production apparatus 50 by arranging the hydrogen permeation reactor units 20 as described above in a plurality of necessary rows in the vertical and horizontal directions. Supply of high-temperature combustion gas to the group 51, a plurality of corresponding unit headers 30 and process headers 31, pipes such as process gas collection pipes 31, production hydrogen collection pipes 32, off-gas collection pipes 33, etc. And a combusting section 53 that is configured. The combustion gas supplied from the combustion unit 53 passes through the unit group 51 and is discharged from the combustion exhaust gas outlet 54.
[0036]
According to the hydrogen production apparatus 50 of the present embodiment as described above, one or a plurality of hydrogen separation membrane modules 3 are incorporated in each hydrogen permeation reaction tube 1 of the plurality of hydrogen permeation reaction tubes 1. Therefore, it becomes possible to flow the combustion gas along the thinned casing body 2a of the cylindrical hydrogen permeation reaction tube 1 so as to efficiently heat the reaction section. Since it can be configured as a unit by laminating the permeation reaction tubes 1, processing, manufacturing, and assembly are easy, and maintenance is possible for each hydrogen permeation reaction tube 1, so that maintenance of the hydrogen separation membrane module 3 and the like is also easy.
[0037]
Further, since the shape of the hydrogen permeation reaction tube 1 is a rectangular cylindrical body, by stacking and arranging the tubes, a large combustion portion (furnace furnace) such as the conventional inner cylindrical hollow portion 112 shown in FIGS. ) In the center of the apparatus, and the hydrogen production apparatus 50 can be made compact. When the hydrogen separation membrane module 3 is rectangular, other components can also be rectangular, so the process gas x The hydrogen permeation reaction tube 1 can be easily processed, manufactured, and assembled.
[0038]
The surface of the casing body 2a of the hydrogen permeation reaction tube 1 is provided with a plurality of flow path support protrusions 2e extending in parallel with the cylindrical body axis direction, and the hydrogen permeation reaction tube 1 is joined to the flow path support protrusions 2e. The hydrogen permeation reactor unit 20 is configured by covering the outer periphery with a pressure-resistant member such as the reactor unit frame 21 to constitute a hydrogen permeation reactor unit 20, so that a strong reactor unit is formed and the hydrogen permeation reaction is performed by the flow path support protrusion 2e. The combustion gas flow path 23 around the pipe 1 is secured, a highly efficient hydrogen production apparatus 50 is obtained, and maintenance of the hydrogen permeation reactor unit 20 unit becomes possible.
[0039]
The hydrogen production apparatus 50 includes a combustion unit 53 that generates combustion gas at a lower part of a unit group 51 including a plurality of hydrogen permeation reactor units 20, and a header unit of each pipe to each hydrogen permeation reaction tube 1 at an upper part of the unit group 51. Since the assembly header portion 52 in which a plurality of 30 are arranged is arranged, the hydrogen production apparatus 50 can be configured in a compact manner, and high-efficiency hydrogen production is possible. In addition, the processing, production, and assembly of the hydrogen reaction apparatus 50 Maintenance becomes easy.
[0040]
The arrangement of the combustion section 53 and the assembly header section 52 with respect to the unit group 51 is not limited to the above, and may be arranged upside down in accordance with use conditions, arranged on the left and right, etc. 50 is configured by disposing a combustion portion 53 on one side of the unit group 51 and a collective header portion 52 on the other side.
[0041]
A hydrogen production apparatus according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a plan view showing a cutaway part of a trunk plate-type hydrogen permeation reaction tube, which is a main part of a hydrogen production apparatus according to the second embodiment of the present invention, and FIG. FIG. 10 is an enlarged cross-sectional view taken along the line FF in FIG. 9. FIG. 11 is a cross-sectional view of a hydrogen permeation reactor unit in which a plurality of trunk plate-type hydrogen permeation reaction tubes (headers and the like are omitted) shown in the same direction as FIG. 10 are stacked.
[0042]
The hydrogen production apparatus according to the present embodiment replaces the body comb-teeth type hydrogen permeation reaction tube 1 in the first embodiment with the body plate-type hydrogen permeation reaction tube 1 ′ and the flow path support (the present invention). The “supporting member” 10) is the same as in the first embodiment except that the “supporting member” 10) is used. Therefore, different points will be mainly described below, and other descriptions will be omitted. In the illustrated portion, the same reference numerals are given to the same portions as those in the first embodiment, and the description thereof is omitted.
[0043]
The body flat plate type hydrogen permeation reaction tube 1 ′ (hereinafter, simply referred to as “hydrogen permeation reaction tube 1 ′”) in the present embodiment has a rectangular cylindrical casing 2 ′. The casing body 2a ′ is not provided with the flow path support protrusion 2e and is a flat plate, except that it is different from the body comb-shaped hydrogen permeation reaction tube 1 of the first embodiment, and the others are configured similarly. .
[0044]
Therefore, in the hydrogen permeation reactor unit 20 ′ of the present embodiment shown in FIG. 11, since the casing body 2a ′ of the hydrogen permeation reaction tube 1 ′ is a flat plate, a plurality of stacked hydrogen permeation reaction tubes 1 ′. A flow path support member 10 disposed so as to extend in parallel to the axial direction of the cylinder of the hydrogen permeation reaction tube 1 ′ is sandwiched therebetween, and in a stacked state, the hydrogen permeation reaction tube 1 ′ In the meantime, the combustion gas flow path 22 is formed by the flow path support member 10, and the high temperature combustion gas from the combustion section 53 is allowed to flow to promote the reaction. For example, a square pipe is appropriate as the flow path support member 10, or a bar material may be used.
[0045]
In addition to the above, the configuration and the hydrogen production mechanism as the hydrogen production apparatus are the same as those of the hydrogen production apparatus 50 of the first embodiment, and the same effects as the hydrogen production apparatus 50 of the first embodiment described above. Can be played. The hydrogen production apparatus according to the present embodiment has a more structured structure because the combustion gas flow path 22 is secured by the flow path support member 10 and the casing body 2a ′ of the hydrogen permeation reaction tube 1 ′ is a flat plate. This simplifies the manufacturing cost.
[0046]
Although the present invention has been described with reference to the illustrated embodiment, the present invention is not limited to the above-described embodiment, and various modifications may be made to the specific structure within the scope of the present invention. Nor.
[0047]
For example, the hydrogen permeation reaction tubes 1, 1 ′ are, for example, other polygonal cylinders or cylindrical tubes instead of the casings 2, 2 ′ having a rectangular parallelepiped shape as in the embodiment. Even if it is a cylinder, it is arranged so that an appropriate combustion gas channel 22 is formed between the hydrogen permeation reaction tubes without the channel support protrusion 2e or the channel support material 10 (if it is cylindrical, it will burn even in a dense arrangement) A gas flow path is formed), or a flow path support protrusion 2e similar to the above is provided, or a similar flow path support material 15 is disposed to provide a combustion gas flow path 22, and similarly a hydrogen permeation reactor. A unit may be formed and the components in each hydrogen permeation reaction tube may be the same. However, from the viewpoints of space, processing, manufacture, assembly, strength, and the like of the apparatus configuration, it is more preferable that the hydrogen permeation reaction tube is a rectangular prismatic tube as in the above embodiment.
[0048]
【The invention's effect】
(1) According to the first aspect of the present invention, the hydrogen production apparatus generates hydrogen from the process gas by the catalyst by heating with the combustion gas, and is partitioned by the metal film that selectively permeates only hydrogen. In the hydrogen production apparatus for taking out the hydrogen generated by the hydrogen separation membrane module forming the space, the hydrogen separation membrane module is configured to be incorporated in each reaction tube of the plurality of reaction tubes. It is possible to efficiently heat the reaction part by flowing along the body part of the gas, preventing the hydrogen permeation performance from being lowered, and the hydrogen production device can be configured as a unit by stacking multiple reaction tubes. Manufacturing and assembly are easy, and maintenance is possible in units of reaction tubes, so that maintenance of the hydrogen separation membrane module and the like is also easy.
[0049]
(2) According to the invention of claim 2, in the hydrogen production apparatus of claim 1, since the hydrogen separation membrane module and the reaction tube are configured to be rectangular, the effect of the invention of claim 1 is achieved. In addition, since the reaction tube has a rectangular shape, stacking and arranging the tubes does not require a large combustion section (furnace), making the hydrogen production device more compact and making the hydrogen separation membrane module rectangular. Since other components can also be rectangular, process gas bypass can be reduced, and the processing tube can be easily processed, manufactured, and assembled.
[0050]
(3) According to the invention of claim 3, in the hydrogen production apparatus according to claim 1 or 2, the reaction tube is arranged so that a flow path for flowing combustion gas is formed between the reaction tubes. In addition to the effect of the invention of claim 1 or claim 2, a solid reactor unit can be formed and the periphery of the reaction tube. The combustion gas flow path is ensured, efficient heating is possible, the hydrogen permeation performance is prevented from being lowered, a highly efficient hydrogen production apparatus is obtained, and maintenance in units is possible.
[0051]
(4) According to the invention of claim 4, in the hydrogen production apparatus according to claim 1 or 2, a plurality of protrusions extending in the axial direction of the reaction tube are provided on the reaction tube surface. A plurality of reaction tubes are stacked such that the protrusions face each other to form a flow path for flowing combustion gas, and the outer peripheral portion is covered with a pressure-resistant member to form a unit. In addition to the effect of the invention of 2, the reactor unit can be made strong, the combustion gas flow path around the reaction tube can be secured by the protrusions, and efficient heating can be performed to prevent the deterioration of the hydrogen permeation performance. An efficient hydrogen production system can be obtained, and unit-by-unit maintenance becomes possible.
[0052]
(5) According to the invention of claim 5, in the hydrogen production apparatus according to claim 1 or 2, a plurality of support members extending in the axial direction of the reaction tube are arranged on the surface of the reaction tube, A plurality of the reaction tubes are stacked so as to sandwich the support member, and a flow path for flowing combustion gas is formed between the reaction tubes, and the outer peripheral portion is covered with a pressure-resistant member so as to form a unit. In addition to the effects of the invention of claim 1 or claim 2, a strong reactor unit can be formed, and a combustion gas flow path around the reaction tube can be secured by the support member, the reaction tube can be made a simple structure, and the production cost can be reduced. Reduced and efficient heating is possible, and a reduction in hydrogen permeation performance is prevented, a highly efficient hydrogen production apparatus is obtained, and maintenance in units is possible.
[0053]
(6) According to the invention of claim 6, in the hydrogen production apparatus according to any one of claims 3 to 5, combustion for generating the combustion gas on one side of a unit group consisting of a plurality of the units. Since the process gas, manufactured hydrogen, off-gas piping and header for the reaction tube are arranged on the other side of the unit and the unit group, the invention of any one of claims 3 to 5 is provided. In addition to the effects, the hydrogen production apparatus can be configured in a compact manner, enabling highly efficient hydrogen production, and facilitating the processing, production, assembly, and maintenance of the hydrogen reaction apparatus.
[Brief description of the drawings]
FIG. 1 is a plan view showing a part of a body comb-teeth hydrogen permeation reaction tube, which is a main part of a hydrogen production apparatus according to a first embodiment of the present invention.
FIG. 2 is a side cross-sectional view taken along the line AA in FIG.
FIG. 3 is an enlarged cross-sectional view taken along the line BB in FIG. 2;
4 is a cross-sectional view of a hydrogen permeation reactor unit in which a plurality of trunk comb-shaped hydrogen permeation reaction tubes are stacked in the same direction as FIG.
FIG. 5 is a perspective view showing a positional relationship between a hydrogen permeation reactor unit and a unit header.
6 is a plan cross-sectional view showing a connection structure between a hydrogen permeation reactor unit and a unit header as viewed in the direction of arrow D in FIG. 5;
FIG. 7 is a conceptual diagram of the configuration of the hydrogen production apparatus according to the first embodiment.
FIG. 8 is a plan view showing a main part of a hydrogen production apparatus according to a second embodiment of the present invention, with a part of a trunk plate-type hydrogen permeation reaction tube cut away.
FIG. 9 is a side cross-sectional view taken along the line EE in FIG.
10 is an enlarged cross-sectional view taken along line FF in FIG.
FIG. 11 is a cross-sectional view of a hydrogen permeation reactor unit in which a plurality of trunk flat plate hydrogen permeation reaction tubes shown in the same direction as FIG. 10 are stacked.
FIG. 12 is a schematic perspective view showing a part of a conventional hydrogen production apparatus in a cutaway state.
13 is a schematic cross-sectional view taken along arrow GG in FIG.
[Explanation of symbols]
1 Body comb-shaped hydrogen permeation reaction tube
1 'flat plate hydrogen permeation reaction tube
2, 2 'casing
2a, 2a 'casing body
2b Casing side wall
2c Casing front end
2d casing rear end
2e Channel support protrusion
3 Hydrogen separation membrane module
4 Molding catalyst
5 Preliminary reforming section
6 Partition plate
7 Process gas supply pipe
8 Production hydrogen extraction pipe
9 Off-gas pipe
10 Channel support material
20, 20 'hydrogen permeation reactor unit
21 Reactor unit frame
22 Combustion gas flow path
30 Unit header
31 Process gas collecting pipe
32 Production hydrogen collecting pipe
33 Off-gas collecting pipe
50 Hydrogen production equipment
51 units
52 Set header
53 Combustion section
54 Combustion exhaust gas outlet
100 Hydrogen production equipment
101 Bottom
102 outer cylinder
103 middle cylinder
104 inner cylinder
105 Second annular space
106 Pre-reformer
107 Hydrogen separation membrane module
108 3rd space
109 Combustion gas burner
110 Combustion gas pipe
111 catalyst layer
112 Inner cylinder hollow
113 annular bottom
114 1st annular space part
115 Combustion gas outlet
116 Feed gas outlet
117 Sweep gas inlet
118 Sweep gas pipe
119 Hydrogen outlet
120 Off-gas pipe
121 Off-gas outlet

Claims (5)

Hydrogen production by generating hydrogen from a process gas by heating with combustion gas and extracting hydrogen generated by a hydrogen separation membrane module that is partitioned by a metal membrane that selectively permeates only hydrogen to form a permeate space inside in the apparatus, Ri Na incorporating the hydrogen separation membrane modules to each reaction tube each of the plurality of reaction tubes, and,
A plurality of protrusions extending in the axial direction of the reaction tube are provided on the reaction tube surface, and a plurality of the reaction tubes are stacked so that the protrusions face each other to form a flow path for flowing combustion gas A hydrogen production apparatus characterized in that an outer peripheral portion is formed into a unit by a pressure-resistant member . Hydrogen production that generates hydrogen from a process gas by a catalyst by heating with combustion gas, and extracts the hydrogen produced by a hydrogen separation membrane module that is partitioned by a metal membrane that selectively permeates only hydrogen and forms a permeate space inside. In the apparatus, the hydrogen separation membrane module is incorporated into each of the plurality of reaction tubes, and
  A plurality of support members extending in the axial direction of the reaction tube are arranged on the surface of the reaction tube, a plurality of the reaction tubes are stacked so as to sandwich the support member, and a flow of flowing combustion gas between the reaction tubes A hydrogen production apparatus characterized in that a path is formed and an outer peripheral portion is unitized by a pressure-resistant member. The hydrogen production apparatus according to claim 1 or 2 , wherein the hydrogen separation membrane module and the reaction tube are rectangular. The hydrogen production apparatus according to any one of claims 1 to 3 , wherein a plurality of reaction tubes are arranged and stacked so that a flow path for flowing combustion gas is formed between the reaction tubes, and an outer peripheral portion is formed. A hydrogen production apparatus characterized by being unitized by a pressure-resistant member. 5. The hydrogen production apparatus according to claim 1, wherein the combustion unit that generates the combustion gas on one side of a unit group including a plurality of units, and the reaction on the other side of the unit group. A hydrogen production apparatus comprising a pipe and a header for process gas, produced hydrogen, off-gas, and a header.

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