JP4841993B2 - Hydrogen-containing gas generator - Google Patents

Description

  The present invention includes a reforming unit that reforms a hydrocarbon-based raw fuel using steam to generate a reforming process gas mainly composed of hydrogen gas, and a reforming process that is supplied from the reforming unit A carbon monoxide gas in the gas is converted to carbon dioxide gas, and the carbon monoxide gas in the reformed gas supplied from the shift unit is selectively oxidized to carbon dioxide using an oxygen-containing gas. The present invention relates to a hydrogen-containing gas generation apparatus provided with a selective oxidation unit and a mixed gas pipe that supplies the oxygen-containing gas and the reforming gas discharged from the shift unit to the selective oxidation unit in a mixed state.

Such a hydrogen-containing gas generating device reforms hydrocarbon-based raw fuel using steam in a reforming unit, and converts carbon monoxide gas in the reformed gas supplied from the reforming unit to the conversion unit. The carbon monoxide gas in the reforming treatment gas supplied from the transformation section is selectively oxidized to carbon dioxide using an oxygen-containing gas in the selective oxidation section, The hydrogen-containing gas generated by such a hydrogen-containing gas generator is used as a fuel for a polymer electrolyte fuel cell, for example. In general, the reforming section is heated by a heating burner so that the reforming process is performed at the reforming process temperature, and the combustion gas after the reforming section is heated is supplied to the steam generation section. The steam generating unit generates steam by heating with the supplied combustion gas, and supplies the steam generated in the steam generating unit together with raw fuel to the reforming unit through the mixed gas pipe to the reforming unit. Thus, a reforming gas containing hydrogen gas as a main component is generated.
In such a hydrogen-containing gas generation device, conventionally, the mixed gas pipe is formed to have a combined flow path portion including a straight main pipeline portion and a merged pipeline portion connected to the main pipeline portion. Then, the oxygen-containing gas flows through the main pipe part, and the reforming process gas flows through the merging pipe part, and the oxygen-containing gas is joined to the reforming process gas in the joining channel part and mixed. The reforming process gas mixed with the oxygen-containing gas is supplied to the selective oxidation unit (see, for example, Patent Document 1).
Incidentally, as such a hydrogen-containing gas generating device, a flat reforming vessel filled with a reforming reaction catalyst provided in the reforming portion, and a shift reaction catalyst provided in the shift portion are filled. The container for the flat transformation part and the flat selective oxidation container filled with the selective oxidation catalyst provided in the selective oxidation part are arranged in the thickness direction of the container to be compact. (For example, refer to Patent Document 2).
In the hydrogen-containing gas generating apparatus configured as described above, since the container for the shift section of the shift section and the container for the selective oxidation section of the selective oxidation section are aligned in the container thickness direction, in general, from the shift section In order to supply the discharged reforming process gas to the selective oxidation unit, the reforming process gas is flowed toward the selective oxidation unit side along the container thickness direction, and then the direction toward the selective oxidation unit side (container It is reasonable to change the flow direction to a direction that intersects the thickness direction) and flow toward the selective oxidation unit, and also select an oxygen-containing gas (generally air that is ventilated by a blower) In order to supply to the oxidation part, it is reasonable to simply flow in the direction toward the selective oxidation part side (direction intersecting the container thickness direction), so that the main pipe line portion extends in the direction intersecting the container arrangement direction. Provided in the form along, and provided in the form along the container alignment direction The merging pipe part is connected in a state of being orthogonal or substantially orthogonal to the main pipe part. As described above, the oxygen-containing gas is allowed to flow through the main pipe part and reformed through the merging pipe part. By flowing the processing gas, the location where the flow direction of the reforming processing gas is changed is the same as the location where the oxygen-containing gas is merged, thereby simplifying the configuration of the mixed gas piping.

JP 2005-071740 A JP 2005-231943 A

As described above, when the oxygen-containing gas is allowed to flow through the straight main pipeline portion and the reforming treatment gas is allowed to flow through the combined flow path portion connected to the main pipeline portion, Due to the pulsation of the amount of the reforming process gas supplied from the shift unit to the selective oxidation unit, there is a possibility that it is difficult to properly maintain the mixing ratio of the reforming process gas and the oxygen-containing gas supplied to the selective oxidation unit, As a result, there is a possibility that the selective oxidation process in the selective oxidation part cannot be performed satisfactorily.
If the explanation is added, the amount of water vapor generated in the water vapor generating part is repeatedly changed and increased, so that so-called pulsation is likely to occur, especially after heating the reforming part in the heating burner for heating the reforming part. In the case where steam is generated using combustion gas, the amount of combustion gas is also adjusted by adjusting the amount of fuel supplied to the heating burner in order to heat the reforming section to an appropriate temperature. Due to fluctuations, a large pulsation may occur in the amount of water vapor generated in the water vapor generation unit. When the amount of water vapor generated in the water vapor generation unit pulsates in this way, the amount of water vapor supplied to the reforming unit pulsates, and as a result, the amount of reforming process gas supplied from the reforming unit to the transformation unit As a result, the amount of the reformed gas supplied from the metamorphic part to the selective oxidation part also pulsates.

When the amount of the reforming process gas discharged from the metamorphic part increases due to the pulsation described above, the main pipe due to the large dynamic pressure of the reforming process gas flowing through the merged pipe part to the main pipe part Although the flow of the oxygen-containing gas flowing through the passage part is greatly hindered, it flows to the main pipe part through the merged pipe part when the amount of the reforming gas discharged from the metamorphic part is decreasing. Since the dynamic pressure of the reforming treatment gas is small, the flow of the oxygen-containing gas flowing in the main pipe portion is not greatly hindered, and as a result, the reforming supplied from the shift unit to the selective oxidation unit Due to the pulsation of the processing gas amount, the mixing ratio of the reforming processing gas supplied to the selective oxidation unit and the oxygen-containing gas changes greatly, making it difficult to maintain the mixing ratio properly.
By the way, for example, in order to make the reformed gas flow along the flow direction of the oxygen-containing gas, the mixing ratio is changed by connecting the merging pipe section to a state inclined with respect to the main pipe section. However, the configuration in which the merging pipe part is connected to the main pipe part in such a state that the merging pipe part is inclined with respect to the main pipe part is orthogonal or substantially orthogonal to the main pipe part. Compared to the connection configuration, the production becomes complicated and difficult to put into practical use.

  The present invention has been made in view of the above circumstances, and its purpose is to maintain the mixing ratio of the reformed gas and the oxygen-containing gas supplied to the selective oxidation unit appropriately, and to achieve the selective oxidation unit. It is in the point which provides the hydrogen-containing gas production | generation apparatus which can perform the selective oxidation process in (2) favorably.

In order to achieve this object, the first characteristic configuration of the hydrogen-containing gas generating apparatus according to the present invention is a reforming process mainly comprising hydrogen gas by reforming a hydrocarbon-based raw fuel using steam. A reforming unit that generates gas, a shift unit that converts carbon monoxide gas in the reforming process gas supplied from the reforming unit into carbon dioxide gas, and a reforming process gas that is supplied from the shift unit A selective oxidation unit that selectively oxidizes carbon monoxide gas to carbon dioxide using an oxygen-containing gas, and an oxygen-containing gas and a reformed gas discharged from the shift unit are supplied to the selective oxidation unit in a mixed state In the hydrogen-containing gas generating device provided with the mixed gas piping
The mixed gas pipe is provided with a combined flow path portion composed of a main pipeline portion having an orifice for stabilizing the flow rate and a merged pipeline portion connected to a location near the downstream side of the orifice in the main pipeline portion. The reforming process gas is made to flow through the main pipe portion and the oxygen-containing gas is made to flow through the merging pipe portion.

That is, since the mixed gas pipe includes a merged flow path portion including a merged pipeline portion connected to the main pipeline portion, the oxygen-containing gas flowing to the main pipeline portion through the merged pipeline portion passes through the main pipeline portion. For example, when the amount of the reforming process gas discharged from the metamorphic part increases due to pulsation, the main pipe line passes through the merging pipe part. The amount of oxygen-containing gas that flows to the part also increases, and when the amount of the reformed gas discharged from the metamorphic part decreases due to pulsation, the oxygen-containing gas that flows to the main line part through the merged line part The amount of gas will also decrease. In other words, the amount of the oxygen-containing gas that merges with the main pipeline portion changes in accordance with the increase / decrease change in the amount of the reforming treatment gas flowing through the main pipeline portion, so the reforming treatment supplied to the selective oxidation unit The selective oxidation treatment in the selective oxidation unit can be performed satisfactorily by suppressing the change in the mixing ratio between the gas and the oxygen-containing gas and maintaining it appropriately.
Further, the reforming process gas flowing through the main pipe portion passes through the orifice for stabilizing the flow rate, so that the fluctuation range of the flow rate due to pulsation is suppressed to a small width.
In addition, when the reforming gas passes through the orifice for stabilizing the flow rate, a negative pressure region is generated at a location near the downstream side of the orifice, and the magnitude of the negative pressure in the negative pressure region is improved. It tends to increase as the flow rate of the processing gas increases. For this reason, since the oxygen-containing gas that flows to the main pipeline portion through the merged pipeline portion connected to the downstream vicinity of the orifice in the main pipeline portion flows to be drawn in the negative pressure region, For example, when the amount of the reforming gas discharged from the metamorphic section increases due to pulsation, the amount of oxygen-containing gas that flows to the main pipe section through the merging pipe section also increases and is discharged from the metamorphic section. When the amount of the reforming gas to be reduced is reduced due to pulsation, the amount of oxygen-containing gas flowing to the main pipeline portion through the merged pipeline portion is also reduced.
In other words, the flow rate variation due to the pulsation of the reforming process gas is kept small by the orifice for stabilizing the flow rate, and the oxygen content that merges with the main pipeline portion is adjusted in accordance with the change in the amount of the reforming process gas. By changing the amount of gas, the selective oxidation treatment in the selective oxidation section is improved by suppressing the change in the mixing ratio between the reforming treatment gas and the oxygen-containing gas supplied to the selective oxidation section and maintaining it appropriately. Can be done.
Accordingly, it is possible to provide a hydrogen-containing gas generation device that can appropriately perform the selective oxidation process in the selective oxidation unit while maintaining an appropriate mixing ratio between the reforming process gas supplied to the selective oxidation unit and the oxygen-containing gas. I was able to do it.

The second characteristic configuration of the hydrogen-containing gas generating device according to the present invention is the first characteristic configuration,
The reforming section is configured to include a flat reforming section container filled with a reforming reaction catalyst that performs the reforming process, and the shift section performs the shift processing catalyst. The selective oxidation section includes a flat selective oxidation section container filled with a selective oxidation reaction catalyst that performs the selective oxidation treatment. The reforming section container, the shift section container, and the selective oxidation section container are arranged in a stacked state in the container thickness direction, and the mixed gas pipe is used for the reforming section. The container for the transformation part and the container for the selective oxidation part are disposed at the outer peripheral portion of the container laminated part arranged in a laminated state, the main pipe part is formed in a straight line, and the merged pipe part is It is connected in a state that is perpendicular or substantially perpendicular to the main conduit part, the merging The main pipeline portion in the portion is arranged with the connection height in a state along the container arrangement direction, and the merged pipeline portion in the merge channel portion is orthogonal to the vessel arrangement direction between the transformation portion and the selective oxidation portion. It is in the point which arrange | positions in the state along the up-down direction and forms in T shape .

  That is, the main pipeline portion is formed in a straight line, and the merging pipeline portion is connected in a state of being orthogonal or substantially orthogonal to the main pipeline portion, so that the oxygen containing fluid that flows to the main pipeline portion through the merging pipeline portion Since the gas flows in a form that is easily drawn in by the reforming treatment gas flowing through the main pipe portion, the oxygen-containing gas is generated in the negative pressure region formed in the vicinity of the downstream side of the orifice in the main pipe portion. As a result, it is more appropriate to increase or decrease the amount of oxygen-containing gas that merges with the main pipe portion in accordance with the increase or decrease of the amount of the reforming treatment gas. It can be done.
  Therefore, a hydrogen-containing gas generating device that can maintain the mixing ratio of the reforming process gas and the oxygen-containing gas supplied to the selective oxidation unit more appropriately and perform the selective oxidation process in the selective oxidation unit more satisfactorily. It came to be able to provide.
  Also, the reforming section container, the transformation section container, and the selective oxidation section container are arranged in a stacked state in the container thickness direction, and the mixed gas piping is provided at the outer peripheral portion of the container stacking section in which the containers are aligned in the stacked state. Since the container group and the mixed gas pipe can be arranged in a compact manner, it can be manufactured in an advantageous state in terms of installation space.
  Accordingly, the hydrogen-containing gas generation device has been provided so that it can be manufactured in an advantageous state in terms of installation space.

If the reforming process gas is allowed to flow through the main line portion provided with the mixer, and the oxygen-containing gas is allowed to flow through the merged line portion to the mixer in the main line portion , reforming by pulsation is possible. As the flow rate of the processing gas changes, the magnitude of the negative pressure generated in the mixer is increased or decreased to increase or decrease the amount of oxygen-containing gas that flows through the merged conduit section. It becomes possible to do so. In other words, when the amount of the reforming gas discharged from the metamorphic part increases due to pulsation, the amount of oxygen-containing gas flowing to the mixer through the merging pipe portion is increased, and the gas is discharged from the metamorphic part. When the amount of the reforming gas to be reduced decreases due to pulsation, the amount of the oxygen-containing gas flowing to the mixer through the merging conduit portion can be reduced.
In this way, in accordance with the change in the amount of the reforming process gas, the amount of the oxygen-containing gas that merges with the main pipeline portion is also increased or decreased to change the reforming process gas supplied to the selective oxidation unit and the oxygen-containing gas. The change in the mixing ratio with the gas is suppressed and appropriately maintained, and the selective oxidation process in the selective oxidation unit can be performed satisfactorily.
Accordingly, it is possible to provide a hydrogen-containing gas generation device that can appropriately perform the selective oxidation process in the selective oxidation unit while maintaining an appropriate mixing ratio between the reforming process gas supplied to the selective oxidation unit and the oxygen-containing gas. Can

[Reference form]
Hereinafter, based on the drawings, a reference embodiment including a main configuration of an embodiment of the present invention will be described.
As shown in FIGS. 3 and 12 , the hydrogen-containing gas generation device P includes a desulfurization unit 1 that desulfurizes a hydrocarbon-based raw fuel gas such as natural gas, and steam that is supplied by evaporating supplied water by heating. The steam generation unit 2 to be generated and the raw fuel gas desulfurized by the desulfurization unit 1 using the steam generated by the steam generation unit 2 are reformed to generate a reformed gas mainly composed of hydrogen gas Supplied from the reforming unit 3, the reforming unit 4 for transforming the carbon monoxide gas in the reforming gas supplied from the reforming unit 3 into carbon dioxide gas using water vapor, and the transforming unit 4 The carbon monoxide gas remaining in the reforming gas is configured to include a selective oxidation unit 5 that selectively oxidizes carbon monoxide gas to carbon dioxide using an oxygen-containing gas, and has a low carbon monoxide gas content. A hydrogen-containing gas is generated.

  Further, the hydrogen-containing gas generation device P is reformed by passing a combustion gas for combustion to heat the reforming unit 3 and a reforming treatment gas discharged from the reforming unit 3. A reforming part heating flow part 7 for heating the part 3, a heating exhaust gas flow part 8 for passing the combustion exhaust gas discharged from the combustion part 6 and heating the steam generation part 2 with the combustion exhaust gas, The flue gas discharged from the heating exhaust gas flow part 8 is passed through, and the exhaust gas flowing part 9 for cooling that cools the metamorphic part 4 with the flue gas, and discharged from the flow part 7 for heating the reforming part The desulfurized raw fuel gas heat exchanger Ea that heats the desulfurized raw fuel gas desulfurized in the desulfurization section 1 by the high-temperature reforming gas that is generated, and the desulfurized raw fuel heat exchanger Ea Heating the raw fuel gas to be desulfurized in the desulfurization unit 1 with the reformed gas after replacement And an economizer Ec for recovering the exhaust heat of the combustion exhaust gas discharged from the cooling exhaust gas flow section 9 into the combustion gas and combustion air supplied to the combustion section 6 Is provided.

  The desulfurized raw fuel heat exchanger Ea is connected to the upstream heat exchange flow section 10 through which the reformed gas discharged from the reforming section heating flow section 7 flows, and the desulfurization section 1. The desulfurized raw fuel flow section 11 for allowing the desulfurized raw fuel gas to be supplied to the reforming section 3 after being desulfurized is provided so as to be capable of heat exchange, and the heat exchange section Eb for the raw fuel before desulfurization Includes a downstream heat exchange flow passage 12 through which the reformed gas discharged from the upstream heat exchange flow passage 10 flows, and a raw fuel gas to be desulfurized in the desulfurization portion 1. The raw fuel flow passage 13 before desulfurization is provided so as to be able to exchange heat.

  The economizer Ec passes the combustion gas supplied to the combustion section 6 to one side of the exhaust heat source exhaust gas passage section 14 through which the combustion exhaust gas discharged from the cooling exhaust gas passage section 9 flows. A combustion gas flow-through portion 15 to be flowed, and a combustion air flow-through portion 16 through which the combustion air supplied to the combustion portion 6 is flowed, and the exhaust heat source exhaust gas flow-through portion 14 and heat, respectively. It is configured to be exchangeable.

  As shown in FIGS. 1 and 3, the hydrogen-containing gas generation device P arranges a plurality of flat containers B forming a processing space S for processing a fluid in a laterally stacked manner, and arranges the plurality of containers B. The pressing means H is provided to press from both sides of the container arrangement direction in a state in which relative movement in a direction orthogonal to the container arrangement direction is allowed.

  And by the some process space S formed in the said some container B, each gas processing part of the said desulfurization part 1, the modification part 3, the transformation part 4, the selective oxidation part 5, the combustion part 6, and the said water vapor | steam production | generation Part 2, the reforming part heating flow part 7, the heating exhaust gas flow part 8, the cooling exhaust gas flow part 9, the upstream heat exchange flow part 10, and the desulfurized raw fuel flow part 11 The downstream heat exchange flow part 12, the pre-desulfurization raw fuel flow part 13, the exhaust heat source exhaust gas flow part 14, the combustion gas flow part 15, and the combustion air flow part 16 are configured. It is.

As shown in FIG. 3, seven containers B are arranged, and all of the seven containers are welded with the partition member 52 positioned between the pair of dish-shaped container forming members 51. The processing space S is provided on both sides of the partition member 52 in a connected manner.
In order to clarify the distinction between the seven containers B, for the sake of convenience, after the reference B indicating the container, reference numerals 1, 2, 3 indicating the order of arrangement from the left in FIGS. 7 is attached.

  As shown in FIGS. 5, 7, and 10, the second container B <b> 2, the fourth container B <b> 4, and the rightmost container B <b> 7 from the left of the plurality of containers are paired with a pair of dish-shaped container forming members 51. A basic type in which the peripheral portion is welded and connected with the partition member 52 positioned between the pair of container forming members 51 to form two processing spaces S, one on each side of the partition member 52. As a container Bs.

As shown in FIGS. 4, 6, 8, and 9, the leftmost container B1, the third container B3 from the left, the fifth container B5, and the sixth container B6 among the plurality of containers. Is formed in a laminating state on the back of the dish-shaped container forming member 51, and the processing space S is formed on both sides of the partition member 52 like the basic container Bs. Is a multi-processing space type container Bm in which three or more processing spaces S are formed by welding its peripheral part to the back of an adjacent one.
Then, when a description is given of the multi-processing space type container Bm, as shown in FIG. 4, the leftmost container B1 is the left side of the pair of dish-shaped container forming members 51. The auxiliary container forming member 53 is provided on the back portion to form a multi-processing space type container Bm having three processing spaces S arranged in the container alignment direction. As shown in FIG. In the container B3, the auxiliary container forming member 53 is provided on the back of the right dish-shaped container forming member 51 of the pair of dish-shaped container forming members 51, and the three processing spaces S are arranged in the container arrangement direction. As shown in FIG. 8, the fifth container B5 from the left is the auxiliary container forming member on each of the backs of the pair of dish-shaped container forming members 51. 53 is provided, and the four processing spaces S are arranged in the container arrangement direction. As shown in FIG. 9, the sixth container B6 from the left also has four processing spaces S in the container arrangement direction, like the fifth container B5 from the left. It is a multi-processing space type container Bm provided in an aligned state.

  As shown in FIG. 4, in the leftmost container B1 (multi-processing space type container Bm having three processing spaces S), the combustion gas flow passage 15 is configured in the leftmost processing space S, and the center The exhaust heat source exhaust gas flow portion 14 is configured in the processing space S, the combustion air flow portion 16 is configured in the rightmost processing space S, and the economizer Ec is configured in the leftmost container B1. It is.

  As shown in FIG. 5, the exhaust gas flow passage for heating in the left processing space S in the second container B2 from the left (basic container Bs having two processing spaces S in the container arrangement direction). 8, and the water vapor generation unit 2 is configured in the processing space S on the right side.

As shown in FIG. 6, in the third container B3 from the left (multi-processing space type container Bm having three processing spaces S in the container arrangement direction), the combustion section 6 in the processing space S at the left end. The reforming section 3 is configured in the central processing space S, and the reforming section heating flow section 7 is configured in the right processing space S.
That is, in the processing space S at the left end of the third container B3 from the left, the combustion gas ejection pipe 17 in which gas ejection holes (not shown) for ejecting the combustion gas are formed in a row and the combustion air are provided. Combustion air jet pipes 18 in which air jet holes (not shown) for jetting are formed in rows are provided, and the combustion gas jetted from the combustion gas jet pipe 17 in the processing space S is used as combustion air. Combustion is performed using combustion air ejected from the ejection pipe 18.

In addition, in the middle processing space S of the third container B3 from the left, the hydrocarbon-based raw fuel is reformed using steam to a reforming processing gas containing carbon monoxide gas mainly composed of hydrogen gas. The reforming reaction catalyst 19 such as ruthenium, nickel, platinum or the like to be processed is filled, and the processing space S is formed in the reforming section 3.
And the part which forms the center processing space S in the third container B3 from the left is provided for the reforming part 3 and used for the flat reforming part filled with the reforming reaction catalyst 19. It corresponds to the container b3.

  Further, the plate-shaped container forming member 51 that partitions the processing space S configured as the reforming unit 3 and the processing space S configured as the reforming unit heating flow-through unit 7 includes those adjacent to the container arrangement direction. A fluid passage portion 54 that communicates with the processing space S is provided, and the reformed gas that has been reformed in the reforming portion 3 flows into the reforming portion heating flow portion 7 through the fluid passage portion 54. It is comprised so that it may be made.

  Incidentally, in the reforming section 3, when the raw fuel gas is a natural gas-based city gas (13A) mainly composed of methane gas, the reforming reaction catalyst 19 catalyzes, for example, 600 to 750 ° C. Under the reforming treatment temperature in the range, methane gas and water vapor are reformed by the following reaction formula (1) to produce a reforming treatment gas containing at least hydrogen gas and carbon monoxide gas.

  As shown in FIG. 7, the upstream heat exchange flow passage 10 is configured in the left processing space S of the fourth container B4 (basic container Bs) from the left, and the right processing space S is formed in the right processing space S. The desulfurized raw fuel flow section 11 is configured, and the fourth vessel B4 from the left constitutes the post-desulfurized raw fuel heat exchanger Ea.

As shown in FIG. 8, in the fifth container B5 from the left (multi-processing space type container Bm having four processing spaces S in the container arrangement direction), the second processing space from the left end and the left. Each of S is filled with a desulfurization reaction catalyst 20 for desulfurizing a hydrocarbon-based raw fuel gas to constitute a desulfurization section 1, and the third processing space S from the left is a raw fuel flow section 13 before desulfurization. The processing space S at the right end is configured in the shift section 4 by filling it with an iron oxide-based or copper-zinc-based shift reaction catalyst 21 that converts carbon monoxide gas into carbon dioxide gas using water vapor. It is.
Incidentally, although details will be described later, since the transformation section 4 constituted by the fifth container B5 from the left is the first stage and the transformation section 4 is provided in four stages, the fifth container from the left will be described below. The metamorphic part 4 configured in B5 may be described as the first stage metamorphic part 4.
The portion of the fifth container B5 from the left that forms the right end processing space S is provided in the shift section 4 and is a flat shift section container b4 filled with the shift reaction catalyst 21. It corresponds to a part.

  Also, a dish-shaped container forming member 51 that partitions the leftmost processing space S and the second processing space S from the left in the fifth container B5 from the left, the second processing space S from the left and the third from the left. Each of the partition members 52 that partition the individual processing space S is provided with a fluid flow portion 54 that communicates the processing space S on both sides. And the desulfurization part 1 comprised in the 2nd process space S from the left is made into the 1st step, the desulfurization part 1 comprised in the process space S of the left end is made into the 2nd step, and the raw fuel gas to be desulfurized is After the pre-desulfurization raw fuel flow part 13 is passed and preheated, each desulfurization part 1 is made to flow in the order of the first stage and the second stage to perform desulfurization treatment.

In addition, a dish-shaped partition for separating the third processing space S from the left constituting the raw fuel flow passage 13 before desulfurization in the fifth container B5 from the left and the right end processing space S constituting the right end transformation section 4 is provided. The container forming member 51 is used as a heat transfer wall, through the heat transfer wall, the raw fuel gas to be desulfurized that flows through the raw fuel flow passage 13 before desulfurization, and the reformed process gas that is to be subjected to the shift treatment through the shift portion 4 And heat exchange with each other.
In other words, the transformation section 4 in the fifth container B5 from the left is also used as the downstream heat exchange flow section 12, so that the raw fuel flow section 13 before desulfurization and the downstream heat exchange flow path are formed. The part 12 constitutes the heat exchanger Eb for raw fuel before desulfurization.

  As shown in FIG. 9, in the sixth container B6 from the left (multi-processing space type container Bm having four processing spaces S in the container arrangement direction), the left end processing space S is passed through the cooling exhaust gas passage. Each of the second, third from the left, and right end processing spaces S of the flow section 9 is filled with the shift reaction catalyst 21 and formed in the shift section 4.

In addition, the partition member 52 that partitions the second processing space S from the left and the third processing space S from the left in the sixth container B6 from the left, the third processing space S from the left, and the rightmost processing space Each of the dish-like container forming members 51 that partition S is provided with a fluid flow portion 54 that communicates the processing space S on both sides. Then, the transformation section 4 constituted by the second processing space S from the left is the second stage, the transformation section 4 constituted by the third processing space S from the left is the third stage, and the rightmost processing space. The metamorphic section 4 constituted by S is the fourth stage, and an external gas processing flow path from the first stage metamorphic section 4 constituted by the fifth container B5 from the left to the second stage metamorphic section 4 The reforming process gas is supplied at 32, and the reforming process gas is caused to flow through each of the transforming sections 4 in the order of the second, third, and fourth stages, and the modification process is performed.
And the part which forms the 2nd-4th process space S from the left in the 6th container B6 from the left is provided in the said shift part 4, and the flat-shaped shift | alteration with which the said catalyst 21 for shift reaction was filled. It corresponds to a part of the part container b4. That is, the portion that forms the rightmost processing space S in the fifth container B5 from the left and the portion that forms the second to fourth processing spaces S from the left in the sixth container B6 from the left, A flat conversion portion container b4 that is provided in the shift portion 4 and is filled with the shift reaction catalyst 21 is formed.

  Incidentally, in the shift unit 4, carbon monoxide and water vapor in the reformed gas supplied from the reforming unit 3 are, for example, in the range of 150 to 400 ° C. by the catalytic action of the shift reaction catalyst 21. Under the modification treatment temperature, the modification reaction is performed according to the following reaction formula (2).

As shown in FIG. 10, in the seventh container from the left, that is, the rightmost container B7 (basic container Bs), the left processing space S is used for heat transfer adjustment without using anything, and the right processing space S is used. The selective oxidation unit 5 is configured by filling a noble metal-based selective oxidation catalyst 22 such as platinum, ruthenium, or rhodium that selectively oxidizes carbon monoxide gas.
The portion forming the right processing space S in the rightmost container B7 corresponds to the flat selective oxidation section container b5 provided in the selective oxidation section 5 and filled with the selective oxidation reaction catalyst 22. To do.

  Incidentally, in the selective oxidation unit 5, the catalytic action of the selective oxidation reaction catalyst 22 remains in the reformed gas after the shift treatment at a selective oxidation temperature of 80 to 150 ° C., for example. The carbon oxide gas is selectively oxidized by the following reaction formula (3).

As shown in FIGS. 1 and 3, the seven containers B described above are arranged outside the leftmost container B1, between the leftmost container B1 and the second container B2 from the left, and the second one from the left. The container B2 and the third container B3 from the left, the third container B3 from the left and the fourth container B4 from the left, the fourth container B4 from the left and the five containers from the left The heat insulating material 23 is arranged in close contact with the container B5 of the eye and between the fifth container B5 from the left and the sixth container B6 from the left. By means H, the seven containers B in close contact with each other are pressed from both sides in the container arrangement direction while allowing relative movement in a direction perpendicular to the container arrangement direction.
That is, the plurality of containers B are juxtaposed in a state where the heat transfer amount adjusting heat insulating material 23 is interposed between the containers B that need to adjust the heat transfer amount.
Further, by arranging the above-mentioned seven containers B in a laterally stacked manner, the reformer container b3, the shift container b4 and the selective oxidation container b5 are stacked in the container thickness direction. Will be lined up.

The pressing means H will be described based on FIGS.
The pressing means H includes a pair of holding plates 71 arranged in contact with both ends in the arrangement direction in a state where a plurality of containers B are arranged side by side as described above, and six sets for connecting the pair of holding plates 71. The screw type connecting means is provided.
The screw type connecting means includes a bolt 72, a pair of nuts 73, and a pair of spring washers 74.
Each holding plate 71 is formed in an L shape, and each holding plate 71 is reinforced by two reinforcing ribs 75.
Then, with the bolts 72 inserted through the pair of holding plates 71, the nuts 73 are tightened from both sides of the bolts 72 via the spring washers 74, whereby the plurality of containers B are relatively aligned in the direction orthogonal to the arrangement direction. It is designed to be pressed from both sides in the alignment direction while allowing movement. Further, the expansion and contraction of the containers B in the arrangement direction is allowed by the expansion and contraction action of the spring washer 74.
The hydrogen-containing gas generation device P is installed in a state where the pair of holding plates 71 are erected and supported by the pair of holding plates 71.

As shown in FIGS. 3 and 12, as shown in FIGS. 3 and 12, the raw fuel supply flow path 31 is connected to the upper part of the raw fuel flow passage 13 before desulfurization, and the second stage desulfurization section 1. And the lower part of the desulfurized raw fuel flow part 11 and the upper part of the desulfurized raw fuel flow part 11 and the upper part of the reforming part 3 of the reforming part heating flow part 7. The upper stage and the upper part of the upstream heat exchange flow part 10, and the lower stage of the upstream heat exchange flow part 10 and the downstream heat exchange flow part 12 of the first stage 4, the upper part of the first stage of the transformation part 4 and the upper part of the second stage of the transformation part 4, the lower part of the fourth stage of the transformation part 4 and the lower part of the selective oxidation part 5. In addition, the gas treatment channel 32 is connected, and the upper part of the selective oxidation unit 5 and the fuel gas supply unit of the fuel cell G are connected by the fuel gas channel 33, before desulfurization. Raw fuel flow part 13, first stage, second stage desulfurization part 1, post-desulfurization raw fuel flow part 11, reforming part 3, reforming part heating flow part 7, upstream heat exchange flow The gas processing path to the fuel cell G is formed by sequentially flowing through the section 10, the first stage, the second stage, the third stage, the fourth stage, the transformation section 4 and the selective oxidation section 5.
An ejector 35 for mixing water vapor into the raw fuel gas after desulfurization is provided at a portion where the second stage desulfurization unit 1 and the post-desulfurized raw fuel flow-through unit 11 in the gas processing flow path 32 are connected. .

  That is, the raw fuel gas is desulfurized in the first-stage and second-stage desulfurization sections 1, and the steam supplied from the steam generation section 2 to the raw fuel gas through the steam flow path 34 is ejected to the desulfurized raw fuel gas. The raw fuel gas mixed with the water vapor is reformed in the reforming unit 3, and the reformed gas is converted into the first, second, third, and fourth stage transformation units. 4, air as an oxygen-containing gas from a selective oxidation blower 42, which will be described later, is merged with the reformed reformed gas, and the reformed gas that has been merged with the air is selectively oxidized. 5, a hydrogen-containing gas having a low carbon monoxide content is generated, and the hydrogen-containing gas is supplied as fuel gas to the fuel cell G through the fuel gas flow path 33.

In the fuel cell G, the fuel gas from the fuel gas flow path 33 is supplied to the fuel electrode, the air from the reaction blower 36 is supplied to the oxygen electrode, and the hydrogen in the fuel gas and the oxygen in the air Power is generated by an electrochemical reaction. Incidentally, as the fuel cell G, for example, a polymer type using a polymer membrane as an electrolyte layer is used.

  The upper part of the combustion part 6 and the upper part of the heating exhaust gas flow part 8, the lower part of the heating exhaust gas flow part 8 and the upper part of the cooling exhaust gas flow part 9, and the cooling exhaust gas flow The lower part of the part 9 and the lower part of the exhaust heat source exhaust gas flow part 14 of the economizer Ec are connected by the combustion exhaust gas flow path 37 respectively, and the combustion exhaust gas discharged from the combustion part 6 is passed through the exhaust gas for heating. The exhaust gas flow section 9 for cooling, the exhaust gas flow section 9 for cooling, and the exhaust heat source exhaust gas flow section 14 of the economizer Ec are configured to flow in this order.

  In the combustion gas flow path 38 for leading off gas discharged from the fuel electrode of the fuel cell G as combustion gas to be burned in the combustion section 6, combustion of the off gas discharge section of the fuel cell G and the economizer Ec The upper part of the combustion gas flow part 15 is connected to the lower part of the combustion gas flow part 15 and the combustion gas ejection pipe 17 provided in the combustion part 6.

  Further, the combustion blower 39 and the upper part of the combustion air flow part 16 of the economizer Ec are connected to the lower part of the combustion air flow part 16 and the combustion air jet pipe 18 provided in the combustion part 6. Are connected by a combustion air flow path 40, respectively.

  Then, in the economizer Ec, the exhaust heat of the combustion exhaust gas is recovered into the combustion gas and the combustion air, the combustion gas and the combustion air are preheated, and the combustion gas and the combustion air thus preheated are used. Is supplied to the combustion section 6 and combusted.

  A raw material water supply channel 41 for supplying raw water for generating steam for reforming treatment is connected to the lower part of the water vapor generating unit 2, and the water vapor generating unit 2 is heated by the heating exhaust gas flow unit 8. The water vapor flow path 34 for guiding the water vapor generated in step 1 is connected to the ejector 35.

  That is, the processing space S adjacent to the reforming unit 3 is configured as the combustion unit 6 that combusts the combustion gas to heat the reforming unit 3, and one of the two processing spaces S adjacent to each other is formed. The heating gas exhaust part 2 is configured to evaporate the supplied water by heating, and the other is configured to pass the combustion exhaust gas discharged from the combustion part 6 to heat the steam generation part 2. The steam generated in the steam generating unit 2 is supplied to the reforming unit 3 for reforming reaction.

By configuring as described above, the hydrogen-containing gas generation device P that generates a hydrogen-containing gas with a low carbon monoxide gas content using hydrocarbon-based raw fuel and steam is used for the raw fuel reforming process. The water vapor generation unit 2 that generates water vapor is also provided integrally.
Further, although it is necessary to heat each of the reforming unit 3 and the steam generating unit 2, water is evaporated at a temperature lower than the temperature at which the raw fuel and the steam undergo the reforming reaction. Provided adjacent to the reforming unit 3, the combustion unit 6 heats the reforming unit 3 to a high temperature, and the combustion exhaust gas discharged from the combustion unit 6 flows through the exhaust gas for heating adjacent to the steam generation unit 2. The water vapor generating part 2 is heated by flowing through the part 8.
That is, since both the reforming unit 3 and the water vapor generating unit 2 are heated to suitable temperatures by the single combustion unit 6, it is possible to reduce the cost of the apparatus and reduce the energy consumption.

  The selective oxidation blower 42 and the gas processing flow path 32 are connected by a selective oxidation air flow path 43. Incidentally, the portion where the selective oxidation air passage 43 is connected in the gas processing channel 32 is connected to the lower part of the fourth stage of the transformation unit 4 and the lower part of the selective oxidation unit 5 in the gas processing channel 32. It is a flow path.

Next, a description will be given of the mixing of the reformed reformed gas and the air for selective oxidation.
As shown in FIGS. 3 and 12, the reforming process gas transformed by the transformation unit 4 is discharged from the lower part of the fourth stage transformation unit 4, and the fourth stage in the gas treatment channel 32. The selective oxidation unit 5 is supplied through a flow path connecting the lower part of the shift unit 4 and the lower part of the selective oxidation unit 5. The air from the selective oxidation blower 42 flows through the selective oxidation air flow passage 43 and then joins the gas treatment flow passage 32 and is mixed with the reforming treatment gas. 5 is supplied.

  Then, as shown in FIG. 11, the flow path from the location where the selective oxidation air passage 43 is connected to the location connected to the selective oxidation section 5 in the gas treatment flow path 32 is divided into air and the transformation section 4. It is constituted by a mixed gas pipe 44 for supplying the reforming process gas discharged from the gas to the selective oxidation unit 5 in a mixed state, and is used for selective oxidation from a location connected to the transformation unit 4 in the gas processing flow path 32. The flow path to the location where the air flow path 43 is connected is configured by a reforming process gas pipe 45 that supplies the reforming process gas to the selective oxidation unit 5, and the selective oxidation air flow path 43. Is constituted by an air pipe 46 for supplying air to the selective oxidation unit 5. The mixed gas pipe 44, the reforming process gas pipe 45, and the air pipe 46 are arranged such that the reforming section container b3, the shift section container b4, and the selective oxidation section container b5 are stacked. It arrange | positions in the outer peripheral location of a container lamination part.

As shown in FIG. 11, the mixed gas pipe 44 is a combined flow path composed of a linear main pipeline portion 47 a and a merged pipeline portion 47 b connected in a state orthogonal or substantially orthogonal to the main pipeline portion 47 a. The reforming gas pipe 45 is connected to the main pipeline portion 47a, the reforming processing gas flows through the main pipeline portion 47a, and the merging pipeline portion is formed. The air pipe 46 is connected to 47b so that air flows through the merging pipe portion 47b.
In other words, the mixed gas pipe 44 is provided with a combined flow path portion 47 at the upstream end portion, and the downstream end portion is connected to the lower portion of the right side container forming member 51 in the right end container B7 for reforming. The reformed process gas from the process gas pipe 45 is mixed with the air from the air pipe 46 in the combined flow path portion 47 and supplied to the selective oxidation unit 5.
The reforming process gas pipe 45 has an upstream end connected to the lower portion of the right auxiliary container forming member 53 in the sixth container B6 from the left, and a downstream end connected to the main channel portion in the combined channel portion 47. It is connected to the upstream end of 47a and is configured to supply the reformed reformed gas from the shift section 4 to the selective oxidation section 5 via the mixed gas pipe 44, and the air pipe 46 The upstream end is connected to the selective oxidation blower 42 and the downstream end is connected to the upstream end of the merging pipe portion 47b in the combined flow path portion 47, so that the air from the selective oxidation blower 42 is supplied. The selective oxidation unit 5 is configured to be supplied through the mixed gas pipe 44.
Incidentally, the upstream end of the main body portion of the mixed gas pipe 44 is connected to the downstream end of the main conduit portion 47a, and the downstream end of the merging conduit portion 47b is the longitudinal direction of the main conduit portion 47a. Connected to the middle part.

Next, specific configurations of the mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 will be described.
The mixed gas pipe 44 has a height that connects the reforming gas pipe 45 to the lower part of the right auxiliary container forming member 53 in the sixth container B6, and the right container forming member 51 in the rightmost container B7. The connection height, which is the height for connecting the mixed gas pipe 44 to the lower part of the container, is arranged in a state along the container arrangement direction, and the right end thereof is connected to the lower part of the right side container forming member 51 in the right end container B7. In addition, the left end portion is configured to include a joint channel portion 47. And the main pipe line part 47a in the combined flow path part 47 is arranged in a state in which the connection height is along the container arrangement direction, and the merged pipe line part 47b in the combined flow path part 47 is the sixth container B6 from the left. And the rightmost container B7, that is, between the shift section 4 and the selective oxidation section 5 are arranged in a state along the vertical direction perpendicular to the container arrangement direction. Further, the joining channel portion 47 is formed in a T shape by connecting the joining conduit portion 47b to the main conduit portion 47a in a state orthogonal from below.

The reforming process gas pipe 45 is arranged with the connection height along the container arrangement direction, and the left end thereof is connected to the lower part of the right auxiliary container forming member 53 in the sixth container B6 from the left. The right end portion is connected to the main pipeline portion 47 a of the combined flow path portion 47.
In addition, the air pipe 46 is provided on the downstream side from the left between the transformation unit 4 and the selective oxidation unit 5 along the vertical direction, and the upper end thereof is connected to the merged conduit portion 47 b of the merged channel portion 47. It is.

When the mixed gas pipe 44 is described further, the mixed gas pipe 44 has a length from the point where the merging pipe part 47b is connected to the main pipe part 47a to the selective oxidation unit 5. The main pipe line portion 47a is configured to have a shape that is at least five times the pipe diameter.
That is, by extending the length from the location where the merging conduit portion 47b is connected to the main conduit portion 47a to the selective oxidation unit 5 in this way, It is configured to promote mixing with air.
And in order to lengthen this length, the said confluence | merging pipe line part 47b is located near the transformation part 4 between the transformation part 4 and the selective oxidation part 5. FIG.

Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Mainly, the configurations of the mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 are the same as those of the above reference embodiment. because are constituted in, for points that are configured similarly to the reference embodiment, and simplify the description indicated by the same reference numerals to avoid redundant description, mainly, reference embodiment differs mixed gas piping 44, Kai The configurations of the quality processing gas pipe 45 and the air pipe 46 will be described.

As shown in FIG. 13, the mixed gas pipe 44 includes a main pipe section 47a having an orifice 48 for stabilizing the flow rate, and a merging pipe line connected to a location near the downstream side of the orifice 48 in the main pipe section 47a. A joint passage portion 47 including a portion 47b is formed, and the reforming process gas pipe 45 is connected to the main conduit portion 47a to flow the reforming treatment gas through the main conduit portion 47a; In addition, the air pipe 46 is connected to the merging conduit portion 47b so that air flows through the merging conduit portion 47b.
The main pipeline portion 47a is formed in a straight line shape, and the merging pipeline portion 47b is connected in a state of being orthogonal or substantially orthogonal to the main pipeline portion 47a.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. The above-described reference embodiment is mainly except that the configuration of the mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 is different. Since the configuration is the same as that of the embodiment , the same configuration as the reference embodiment and the embodiment is simplified by giving the same reference numerals to avoid redundant description, and mainly the reference. The configurations of the mixed gas piping 44, the reforming gas piping 45, and the air piping 46, which are different from the embodiment and the embodiment , will be described.

As shown in FIG. 14 , the mixed gas pipe 44 includes a main channel portion 47 a having a mixer 49 and a junction channel portion 47 b connected to the mixer 49 in the main pipeline portion 47 a. 47, the reforming process gas pipe 45 is connected to the main pipe part 47a, the reforming process gas flows through the main pipe part 47a, and the merging pipe part 47b. The air pipe 46 is connected to the air pipe 46 so that air flows through the merging pipe portion 47b.
The main pipeline portion 47a is formed in a straight line shape, and the merging pipeline portion 47b is connected to the mixer 49 so as to be orthogonal or substantially orthogonal to the main pipeline portion 47a.

[Another embodiment]
(1) In the above embodiment, for example, the main pipeline portion 47a in the combined flow passage portion 47 is arranged in a state along the horizontal direction intersecting the container arrangement direction, and the main pipeline portion 47a is arranged on one side in the container arrangement direction. The arrangement of the mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 may be changed as appropriate, such as connecting the merging pipe portion 47 b in a state of being orthogonal or substantially orthogonal.

(2) In the above embodiment , the main pipeline portion 47a is formed in a straight line shape, and the merging pipeline portion 47b is connected in a state orthogonal or substantially orthogonal to the main pipeline portion 47a. For example, the main pipeline portion 47a It is not necessary to form the main pipeline portion 47a in a straight line, for example, by bending or curving a portion where the junction pipeline portion 47b is connected, and the junction pipeline portion 47b is inclined with respect to the main pipeline portion 47a. You may connect to the state.

(3) In the second embodiment , the merging conduit portion 47b is connected to the mixer 49 so as to be orthogonal or substantially orthogonal to the main conduit portion 47a, but the merging conduit portion 47b is connected to the main conduit. You may connect to the mixer 49 in the state inclined with respect to the part 47a, or you may connect the merge pipe part 47b to the mixer 49 in the state which becomes parallel with respect to the main pipe part 47a.

(4) In the above embodiment, the reformer container b3, the shift container b4, and the selective oxidation container b5 are arranged side by side in the container thickness direction, and the outer periphery of the container stack section arranged in a stacked state. The mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 are disposed at the locations, but the reforming section container b3, the shift section container b4, and the selective oxidation section container b5 are used as containers. The mixed gas pipe 44, the reforming gas pipe 45, and the air pipe 46 may not be arranged in the outer peripheral portion of the container stacking portion.

(5) In the above-described embodiment, the mixed gas pipe 44, the reforming process gas pipe 45, and the air pipe 46 may be provided with a processing section such as a flow section that can exchange heat with other flow sections. Good.

(6) In the above embodiment, when the pipes are connected, the pipes may be formed by a single pipe member. Specifically, the main body part and the main pipe part of the mixed gas pipe 44 Connection of 47a, connection of main pipe portion 47a and reforming process gas pipe 45, connection of merge pipe portion 47b and air pipe 46, etc. You may comprise with a member.

Front view of hydrogen-containing gas generator Side view of hydrogen-containing gas generator Longitudinal front view of main parts of hydrogen-containing gas generator Perspective view showing the leftmost container Perspective view showing the second container from the left Perspective view showing the third container from the left Perspective view showing the fourth container from the left Perspective view showing the fifth container from the left Perspective view showing the sixth container from the left Perspective view showing the rightmost container Partially cutaway front view of hydrogen-containing gas generator Block diagram showing the overall configuration of the hydrogen-containing gas generator Partially cutaway front view of a hydrogen-containing gas generator according to a second embodiment Partially cutaway front view of a hydrogen-containing gas generator according to a third embodiment

Explanation of symbols

3 reforming section 4 shift section 5 selective oxidation section 19 catalyst for reforming reaction 21 catalyst for shift reaction 21 catalyst for selective oxidation reaction 44 piping for mixed gas 47 joint flow passage portion 47a main conduit portion 47b confluence conduit portion 48 orifice 49 mixing B3 Container for reforming section b4 Container for transformation section b5 Container for selective oxidation section P Hydrogen-containing gas generator

Claims (2)

A reforming unit for reforming a hydrocarbon-based raw fuel using steam to generate a reformed gas mainly composed of hydrogen gas; and
A metamorphic section for transforming carbon monoxide gas in the reforming gas supplied from the reforming section into carbon dioxide gas;
A selective oxidation unit that selectively oxidizes carbon monoxide gas in the reformed gas supplied from the shift unit to carbon dioxide using an oxygen-containing gas;
A hydrogen-containing gas generation device provided with a mixed gas pipe for supplying an oxygen-containing gas and a reforming gas discharged from the shift unit to the selective oxidation unit in a mixed state,
The mixed gas pipe is provided with a combined flow path portion composed of a main pipeline portion having an orifice for stabilizing the flow rate and a merged pipeline portion connected to a location near the downstream side of the orifice in the main pipeline portion. A hydrogen-containing gas generating apparatus that is formed and configured to flow a reforming process gas through the main pipe portion and to flow an oxygen-containing gas through the merging pipe portion. The reforming part is configured to include a flat reforming part container filled with a reforming reaction catalyst that performs the reforming process,
The shift section is configured to include a flat shift section container filled with a shift reaction catalyst for the shift process,
The selective oxidation unit includes a flat selective oxidation unit container filled with a selective oxidation reaction catalyst for performing the selective oxidation treatment,
A container for the reforming section, a container for the transformation section, and a container for the selective oxidation section are provided side by side in a stacked state in the container thickness direction;
The mixed gas pipe is disposed at an outer peripheral portion of a container stacking portion in which the container for the reforming unit, the container for the transformation unit, and the container for the selective oxidation unit are arranged in a stacked state, and the main pipe portion is It is formed in a straight line, and the merging conduit portion is connected in a state of being orthogonal or substantially orthogonal to the main conduit portion, and the main conduit portion in the merging passage portion is in a state where the connection height is along the container arrangement direction. The confluence channel portion in the confluence portion is formed in a T-shape between the metamorphic portion and the selective oxidation portion in a state along the vertical direction perpendicular to the container arrangement direction. The hydrogen-containing gas generator according to claim 1.

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