JP5196540B2 - Gas treatment device for fuel cell - Google Patents

Description

The present invention relates to a fuel cell gas processing apparatus such as a fuel cell reforming apparatus having a gas passage through which raw material gas, reformed gas or combustion gas passes.

  Patent Document 1 discloses a gas passage through which a raw material gas and a reformed gas pass, a first cylinder member that faces the gas passage and defines the gas passage, and an inner periphery of the first cylinder member so as to face the gas passage. A fuel reformer having a second cylinder member provided on the side or outer peripheral side and defining a gas passage is disclosed. According to this, the gas carrier is filled with the catalyst carrier carrying the CO reducing catalyst. As a result, the CO concentration contained in the reformed gas passing through the gas passage is reduced.

Further, Patent Document 2 discloses a gas passage for allowing the reformed gas to pass through, a first cylinder member that faces the gas passage and defines the gas passage, and an inner peripheral side of the first cylinder member so as to face the gas passage or A CO conversion unit structure of a fuel reformer having a second cylinder member provided on the outer peripheral side and defining a gas passage is disclosed. According to this, the gas carrier is filled with the catalyst carrier carrying the CO reducing catalyst. As a result, the CO concentration contained in the reformed gas passing through the gas passage is reduced.
JP 2005-15292 A JP 2002-274810 A

  According to the above-mentioned patent document, an aggregate of granular catalyst carriers carrying a CO reducing catalyst is accommodated in the gas passage. In this case, a structure in which the assembly is held by a gas passage plate such as a punching metal having a large number of through holes is common. For this reason, welding and brazing operations are required to fix a gas passage plate such as punching metal to the gas passage. Welding and brazing work requires skill and is likely to increase costs. For this reason, it is preferable to abolish welding and brazing as much as possible.

  The present invention has been made in view of the above circumstances, and an insertion member having gas permeability such as punching metal may not be directly fixed to the first cylinder member or the second cylinder member by welding or brazing. It is an object of the present invention to provide a fuel cell gas treatment device.

  (1) A fuel cell gas processing device according to aspect 1 includes a gas passage through which a raw material gas, a reformed gas, or a combustion gas passes, a first cylinder member that faces the gas passage and divides the gas passage, and a gas passage A second cylindrical member that is provided on the inner peripheral side or the outer peripheral side of the first cylindrical member so as to face the first cylindrical member, and a first cylindrical member and a second cylindrical member that secure gas permeability in the gas passage, An insertion member disposed between the first cylindrical member and the second cylinder in a radial direction of the first cylindrical member, in a cross section cut along the direction of gravity. The first cylindrical member has an inclination from the one end side of the insertion member toward the other end side as it goes downward in the direction of gravity from the one end side of the insertion member. And having a first inclined portion engageable with one end of the insertion member, and a second The member has an inclination from the other end side of the insertion member toward the one end side as it goes upward in the direction of gravity from the other end side of the insertion member, and vertically inverts the first cylindrical member and the second cylindrical member. In some cases, the insertion member has a second inclined portion engageable with the other end portion side.

  Here, the gas processing device is a reforming process for reforming a raw material gas to generate a reformed gas, and a shift for reducing the concentration of harmful gas contained in the reformed gas by a shift reaction using vapor phase water. At least one of reaction treatment, oxidation reaction treatment for reducing the concentration of harmful gas contained in the reformed gas by oxidation reaction, and methanation reaction treatment for reducing the concentration of harmful gas contained in the reformed gas by methanation reaction Can be implemented.

  The first cylinder member and the second cylinder member define a gas passage. The gas passage is a passage through which the raw material gas, the reformed gas, or the combustion gas passes. The base material of the first cylinder member and the second cylinder member may be metal or ceramic. The insertion member is disposed between the first cylinder member and the second cylinder member while ensuring gas permeability in the gas passage. In the cross-section cut along the direction of gravity, the insertion member has one end facing the first cylinder member and the other end facing the second cylinder member in the radial direction of the first cylinder member.

  The first cylindrical member has a first inclined portion that can be engaged with one end portion of the insertion member when the first cylindrical member and the second cylindrical member are in fixed positions in the vertical direction. The fixed position means a normal position in the vertical direction, and means that the first cylindrical member and the second cylindrical member are not inverted in the vertical direction. A 1st inclination part has the inclination which goes to the other end part side from the one end part side of an insertion member as it goes to the downward direction of a gravitational direction from the one end part side of an insertion member. Thereby, when the 1st cylinder member and the 2nd cylinder member are made into a fixed position, it is controlled that an insertion member detaches below by gravity.

  The second cylindrical member has a second inclined portion that can be engaged with the other end portion of the insertion member when the first cylindrical member and the second cylindrical member are turned upside down with respect to the fixed position. A 2nd inclination part has the inclination which goes to an end part from the other end part of an insertion member as it goes to the upper direction of a gravitational direction from the other end part of an insertion member. When the first cylinder member and the second cylinder member are turned upside down with respect to the fixed position, such as during assembly, the second inclined portion of the second cylinder member can be engaged with the other end of the insertion member. Become. Thereby, when the 1st cylinder member and the 2nd cylinder member are turned upside down with respect to a fixed position, it is controlled that an insertion member detaches below by gravity. Therefore, it is not necessary to fix the insertion member to the first cylinder member and the second cylinder member by welding or brazing.

  (2) A fuel cell gas treatment device according to aspect 2 includes a gas passage through which a gaseous source gas or reformed gas passes, a first cylinder member that faces the gas passage and divides the gas passage, A second cylinder member that is provided on an inner peripheral side or an outer peripheral side of the first cylinder member so as to face the gas path; and a first cylinder member and a second cylinder that ensure gas permeability in the gas path; An insertion member disposed between the first and second cylindrical members, wherein the insertion member has a cross-section cut along the direction of gravity and the insertion member has one end facing the first cylindrical member and the other end facing the second cylindrical member The first cylindrical member has an inclination from one end of the insertion member toward the other end as it goes downward in the direction of gravity from the one end of the insertion member, and one end of the insertion member It has the 1st inclined part which can be engaged in the section side.

  Here, the first cylinder member and the second cylinder member define a gas passage. The gas passage is a passage through which the raw material gas or the reformed gas passes. The base material of the first cylinder member and the second cylinder member may be metal or ceramic. The insertion member is disposed between the first cylinder member and the second cylinder member while ensuring gas permeability in the gas passage. In a cross section cut along the direction of gravity, the insertion member has one end facing the first cylinder member and the other end facing the second cylinder member in the radial direction of the first cylinder member.

  The first tube member has a first inclined portion that can be engaged with one end of the insertion member when the first tube member and the second tube member are in the fixed positions. A 1st inclination part has the inclination which goes to the other end part side from the one end part side of an insertion member as it goes to the downward direction of a gravitational direction from the one end part side of an insertion member. Thereby, when the 1st cylinder member and the 2nd cylinder member are made into a fixed position, it is suppressed that an insertion member detaches | leaves by gravity. Therefore, it is not necessary to fix the insertion member to the first cylinder member and the second cylinder member by welding or brazing.

  (3) The fuel cell gas treatment device according to each aspect may preferably include the following modes.

  -Preferably, the gas processing apparatus preferably has a reforming section that reforms the raw material gas into a reformed gas (anode gas). Further, preferably, a CO oxidation part that reduces harmful gas such as carbon monoxide contained in the reformed gas by an oxidation reaction treatment, and a harmful gas such as carbon monoxide contained in the reformed gas in the gas phase. A mode in which one or both of the shift parts to be reduced by a shift reaction process using water in a shape is provided can be employed.

  -Preferably, the catalyst carrier carrying the catalyst is accommodated in the gas passage, and the insertion member is a gas passage member that supports the catalyst carrier accommodated in the gas passage and has gas permeability. . The catalyst is contained in a catalyst for promoting the reforming reaction process of the raw material gas, an oxidation catalyst for reducing harmful gas such as carbon monoxide contained in the reformed gas by the oxidation reaction process, and the reformed gas. Reduction of harmful gases such as carbon monoxide by methanation reaction treatment, or shift reaction treatment using gas-phase water of harmful gases such as carbon monoxide contained in reformed gas The aspect which is the shift catalyst to be made can be adopted.

  A mode in which the insertion member is a gas passage member that supports the catalyst carrier accommodated in the gas passage and has gas permeability can be adopted. Since the dropout of the gas passage member is suppressed, the dropout of the catalyst carrier in the gas passage is suppressed. The aspect which is a heat-transfer member which improves the heat-transfer property with respect to a 1st cylinder and / or a 2nd cylinder can be employ | adopted for an insertion member. Since the drop-off of the heat transfer member is suppressed, good heat transfer to the first cylinder and / or the second cylinder is ensured. Preferably, the gas passage has a ring shape or a cylindrical shape, and the insertion member can adopt a ring shape or a cylindrical shape fitted to the gas passage.

  In the cross section cut along the direction of gravity, the first inclined portion of the first cylindrical member and the second inclined portion of the second cylindrical member are inclined in the same direction with respect to the central axis of the first cylindrical member. An embodiment is mentioned. In this case, since the first inclined portion and the second inclined portion face each other and are inclined in the same direction, the passage width of the gas passage is ensured, and the gas permeability is easily ensured. Preferably, it is possible to adopt a mode in which a mating inclined portion that faces the first inclined portion of the first cylindrical member and is inclined in the same direction is formed in the second cylindrical member. In this case, it is advantageous to secure the passage width of the gas passage.

  According to the aspect 1, in the case where the first cylinder member and the second cylinder member are in the fixed positions, the insertion member is suppressed from being separated downward due to gravity. Furthermore, even when the first cylinder member and the second cylinder member are turned upside down with respect to the fixed position during assembly, the second inclined portion of the second cylinder member is engaged with the other end side of the insertion member. It becomes possible. Thereby, when the 1st cylinder member and the 2nd cylinder member are turned upside down with respect to a fixed position, it is controlled that an insertion member detaches below by gravity.

  As a result, the gas-permeable insertion member disposed in the gas passage does not have to be directly fixed to the first cylinder member or the second cylinder member by welding or brazing. Even if it is a case where it is reversed upside down, drop-off of the insertion member arranged in the gas passage can be suppressed.

  According to the aspect 2, when the first cylinder member and the second cylinder member are in the fixed positions in the vertical direction, the insertion member is suppressed from being separated downward due to gravity. As a result, the gas-permeable insertion member disposed in the gas passage may not be directly fixed to the first cylinder member or the second cylinder member by welding or brazing.

(Embodiment 1)
Embodiment 1 of the present invention will be specifically described below with reference to the drawings. The reformer according to this embodiment is applied to fuel cell systems for stationary use, industrial use, vehicle use, and the like.

  FIG. 1 shows the overall concept of the reformer 1 (gas treatment device). 2 and 3 show the main part of the reformer 1. FIG. As shown in FIG. 1, a reformer 1 includes a reforming unit 2 that forms a combustion chamber 20, and a combustion unit 25 that functions as a heating source that is inserted (press-fitted) into the combustion chamber 20 to heat the reforming unit 2. The evaporation unit 50, the shift unit 60 (hazardous gas reduction unit), and the CO oxidation unit 53 (hazardous gas reduction unit). The combustion unit 25 is supplied with combustion fuel (or anode offgas discharged from the anode of the fuel cell) and combustion air. The reforming unit 2 has a cylindrical shape having a central axis P1 along the vertical direction, reforms a gaseous reforming fuel (reforming fuel material) with steam, and uses hydrogen as a main component. A reformed gas is generated (for example, 20 mol% or more). When the reforming fuel contains methane, the reforming reaction process is based on the following equation (1).

  As shown in FIG. 2, the reforming unit 2 includes an outer passage 21 (gas passage), an inner passage 22 (gas passage) formed coaxially with the outer passage 21, and an outer passage. And a return passage 23 (gas passage) that connects the upper portion of 21 and the upper portion of the inner passage 22. The inner passage 22 and the outer passage 21 are partitioned by a second heat insulation 47. A lower portion of the outer passage 21 is an inlet 2 i of the reforming unit 2. The lower part of the inner passage 22 is an outlet 2p of the reforming unit 2. The outer passage 21 and the inner passage 22 accommodate a catalyst carrier 20a carrying a reforming catalyst. Accordingly, the outer passage 21 and the inner passage 22 function as a catalyst housing passage. The catalyst carrier 20a is granular.

  As shown in FIG. 2, a first heat insulating layer 41 having a cylindrical shape is provided on the outer peripheral side of the reforming unit 2. The first heat insulating layer 41 includes a peripheral wall layer 41 a that is coaxial with the reforming portion 2 and a ceiling layer 41 c that covers the upper portion of the reforming portion 2. An intermediate lid 42 having a flange portion 42f is attached to the ceiling layer 41c. The inner peripheral surface and the outer peripheral surface of the first heat insulating layer 41 coaxially form a first combustion passage 43 (gas passage) and a second combustion passage 44 (gas passage) having a cylindrical shape communicating with the combustion chamber 20. . The second combustion passage 44 communicates with a combustion exhaust gas passage 45 communicating with the outside. Further, on the outer peripheral side of the second combustion passage 44 defined by the first heat insulating layer 41, an evaporation portion 50 for evaporating the reforming water is formed coaxially. The evaporation part 50 is formed in a cylindrical space with a narrow space width. A water inlet 50 i for supplying reforming water is formed in the lower part of the evaporation unit 50. A water vapor outlet 50p that discharges water vapor generated by heating the reforming water is formed in the upper part of the evaporation unit 50. For this reason, in the evaporation part 50, water and water vapor flow upward. However, water and water vapor may be allowed to flow downward in the evaporation unit 50.

  As shown in FIG. 2, a cylindrical CO oxidation unit 53 is coaxially provided adjacent to the outer peripheral side of the evaporation unit 50 via a cylindrical third insulating element 48. The third heat insulation layer 48 is effective in enhancing the heat insulation between the CO oxidation unit 53 and the evaporation unit 50 and ensuring the temperature of the CO oxidation unit 53. In the lower part of the CO oxidation unit 53, an inlet 53i communicating with a mixing chamber 81 described later is formed. An outlet 53p communicating with the anode of the fuel cell is formed in the upper part of the CO oxidation unit 53.

  As shown in FIG. 1, the combustion gas burned in the combustion chamber 20 descends the first combustion passage 43, rises up the second combustion passage 44, flows out from the combustion exhaust gas passage 45, and is discharged to the outside. . The evaporator 50 is heated by the combustion gas flowing through the second combustion passage 44.

  Furthermore, as shown in FIG. 1, the reformer 1 includes a heat exchange unit 54 disposed below the reforming unit 2, a shift unit 60 disposed below the heat exchange unit 54, and a shift unit 60. A warm-up unit 55 (operating when the temperature is excessively low) having an electric heater disposed between the heat exchange unit 54 and the heat exchange unit 54 is provided. Here, a heat exchanging unit 54 is provided downstream (downward) of the reforming unit 2. A shift unit 60 is provided downstream (downward) of the heat exchange unit 54. The heat exchange unit 54 includes a first heat exchange passage 54a and a second heat exchange passage 54c that can exchange heat with each other. The heat exchanging unit 54 includes a raw material inlet 54 i that supplies a reforming fuel (for example, a hydrocarbon-based gas) as a raw material gas, and a water vapor inlet 54 k that is supplied with water vapor generated in the evaporation unit 50.

  The shift unit 60 promotes a shift reaction process using water vapor based on the following formula (2), and reduces CO contained in the reformed gas. The CO shift unit 60 includes a catalyst carrier 60a having a shift catalyst that promotes the shift reaction process. The shift catalyst is, for example, a copper-zinc catalyst, but is not limited thereto. The catalyst carrier 60a is granular. As shown in FIG. 4, the shift unit 60 includes a reformed gas passage forming member 61 that forms a reformed gas passage through which the reformed gas flows. The reformed gas passage forming member 61 forms an inner cylinder 62 that functions as a cylindrical member that forms an inner first shift passage 61f (reformed gas passage) and an outer second shift passage 61s (reformed gas passage). An outer cylinder 63 functioning as a cylindrical member arranged coaxially with respect to the inner cylinder 62, and a first perforated plate 64 having a circular shape provided on the tip (lower end) side of the inner cylinder 62, A second perforated plate 65 having a ring shape provided on the base end (upper end) side of the inner cylinder 62, and a closing plate 66 for closing the lower surface opening of the outer cylinder 63 and the lower surface opening of the inner cylinder 62. . The perforated plate referred to in this specification can be formed of punching metal.

  Since the first shift passage 61f and the second shift passage 61s are partitioned by the inner cylinder 62, the inner cylinder 62 functions as a partition member. The first shift passage 61f and the second shift passage 61s accommodate a catalyst carrier 60a that carries a shift catalyst.

  The first perforated plate 64 and the closing plate 66 form a return passage 67, and the reformed gas in the first shift passage 61f is U-turned in the direction of arrow E and flows into the second shift passage 61s. The first perforated plate 64 prevents the catalyst carrier 60a carrying the shift catalyst from falling while ensuring gas permeability. The second porous plate 65 suppresses the scattering of the catalyst carrier 60a carrying the shift catalyst while ensuring gas permeability. The outer cylinder 63 is provided with a first forming member 71 (oxygen-containing gas passage forming member) that forms an air passage 70 (oxygen-containing gas passage) to which oxygen-containing air (oxygen-containing gas) is supplied.

The CO oxidation unit 53 is disposed downstream of the shift unit 60, and is an oxidation that oxidizes and reduces CO contained in the reformed gas purified by the shift unit 60 based on the following equation (3). The reaction process is promoted. For this reason, the CO oxidation unit 53 includes a catalyst carrier 53a having an oxidation catalyst that promotes the oxidation reaction process. The catalyst carrier 53a is granular. For example, a noble metal catalyst such as ruthenium-based, platinum-based, or platinum-ruthenium-based is employed as the oxidation catalyst, but is not limited thereto.
Formula (1) ... CH ₄ + H ₂ O → 3H ₂ + CO
Formula (2) ... CO + H ₂ O → H ₂ + CO ₂
Formula (3) ... CO + 1 / 2O ₂ → CO ₂
Next, the operation of the reformer 1 will be described with reference to FIG. In this case, combustion air is supplied to the combustion unit 25 and combustion fuel is supplied to the combustion unit 25. As a result, the combustion section 25 is ignited, and a fuel flame 25 c is generated in the combustion chamber 20. The combustion fuel may be gaseous fuel, liquid fuel, or pulverized fuel. Specifically, hydrocarbon fuel and alcohol fuel can be employed. For example, hydrocarbon city gas, LPG, kerosene, methanol, dimethyl ether, gasoline, biogas and the like can be employed. The reforming fuel may be gaseous fuel or liquid fuel. Specifically, hydrocarbon fuel and alcohol fuel can be employed. For example, hydrocarbon city gas, LPG, kerosene, methanol, dimethyl ether, gasoline, biogas and the like can be employed. The reforming unit 2 is heated to a high temperature (for example, 400 to 900 ° C.) by the combustion unit 25 so as to be suitable for the reforming reaction process. The evaporating unit 50 is also heated together with the reforming unit 2. The shift unit 60 and the CO oxidation unit 53 are indirectly heated.

  When the reforming unit 2 is brought to an appropriate temperature region, reforming water (water before the reforming reaction process) is supplied to the water inlet 50 i of the evaporation unit 50. The reformed water is heated in the evaporating section 50 to be steamed. The generated water vapor rises in the evaporation unit 50, and reaches the merging zone 56 from the water vapor outlet 50 p of the evaporation unit 50 through the water vapor passage 75 through the water vapor inlet 54 k of the heat exchange unit 54. On the other hand, the reforming fuel (fuel raw material) is supplied from the raw material inlet 54 i of the heat exchanging section 54 to the joining area 56 of the heat exchanging section 54. As a result, the reforming fuel and the steam are merged and mixed in the merge area 56. The merged mixed fluid flows through the first heat exchange passage 54a on the low temperature side of the heat exchange section 54 and reaches the inlet 2i of the outer passage 21 of the reforming section 2. At this time, the high-temperature reformed gas discharged from the outlet 2p of the inner passage 22 of the reforming section 2 flows through the second heat exchange passage 54c of the heat exchange section 54. For this reason, the relatively high-temperature reformed gas and the mixed fluid having a temperature relatively lower than that of the reformed gas exchange heat with each other. Therefore, the mixed fluid before the reforming reaction process is preheated. The mixed fluid flows into the outer passage 21 of the reforming section 2 and flows in the direction of arrow A (upward, see FIG. 2), makes a U-turn through the return passage 23 and flows into the inner passage 22 and flows in the direction of arrow B (downward, FIG. 2). At this time, the mixed fluid in which the water vapor and the reforming fuel are mixed becomes a hydrogen-rich (30 mol% or more) reformed gas by the reforming reaction process shown in (1). This reformed gas may contain carbon monoxide.

  Further, the high-temperature reformed gas that has undergone the reforming reaction process flows from the outlet 2p of the inner passage 22 of the reforming section 2 into the heat exchanging section 54 in the direction of arrow C (see FIG. 2). That is, the high temperature reformed gas passes through the second heat exchange passage 54c on the high temperature side of the heat exchange section 54, thereby heating the mixed fluid in the first heat exchange passage 54a on the low temperature side. Furthermore, the reformed gas flows in the direction of arrow D (see FIG. 4) from the inlet 60i of the shift unit 60 into the first shift passage 61f of the shift unit 60 through the warm-up unit 55. In the shift unit 60, a shift reaction process using water vapor is performed as shown in the above-described formula (2). As a result, carbon monoxide contained in the reformed gas is reduced, and the reformed gas is purified.

Further, the reformed gas purified in the shift unit 60 flows in the directions of arrows E and G (see FIG. 4) in the shift unit 60 and reaches the mixing chamber 81. Furthermore, the reformed gas flows through the mixing chamber 81, flows from the outlet 81p of the mixing chamber 81 through the passage 85 in the directions of arrows H and I (see FIG. 2), and flows into the CO oxidation unit 53 from the inlet 53i. In the CO oxidation unit 53, the reformed gas flows in the direction of arrow J (upward, see FIG. 2). In the CO oxidation unit 53, as shown in the above formula (3), an oxidation reaction process (CO + 1 / 2O ₂ → CO ₂ ) using oxygen is performed. As a result, CO contained in the reformed gas is purified and further reduced. The reformed gas thus purified is supplied as an anode gas from the outlet 53p of the CO oxidation section 53 to the fuel electrode (anode) of the fuel cell. The air that functions as the cathode gas is supplied to the oxidant electrode (cathode) of the fuel cell. As a result, a power generation reaction process occurs in the fuel cell, and electric energy is generated. The off-gas (gas discharged from the anode of the fuel cell) after the anode gas power generation reaction treatment may contain hydrogen that has not been subjected to the power generation reaction treatment. For this reason, the off gas is supplied to the combustion unit 25 and burned, and becomes a heat source of the combustion unit 25. In addition, the whole reformer 1 is coat | covered with the coating layer 200 (refer FIG. 1) which makes the outer shell shape formed with the heat insulation material.

  Further, the reformer 1 of the present embodiment will be described with reference to FIG. The reformer 1 has a first cylinder 91, a second cylinder 92, a third cylinder 93, a fourth cylinder 94, a fifth cylinder 95, a sixth cylinder 96, a first cylinder 96, which function as cylinder members, from the inner periphery toward the outer periphery. The seventh cylinder 97, the eighth cylinder 98, and the ninth cylinder 99 are coaxial with the central axis P1. Each of the cylinders 91 to 99 has a substantially cylindrical shape that makes a round around the central axis, and is formed of a metal (for example, stainless steel). Here, in the reforming unit 2, the first cylinder 91, the second cylinder 92, the third cylinder 93, and the fourth cylinder 94 are arranged coaxially. The first cylinder 91 constitutes the innermost cylinder member of the reforming unit 2. The first cylinder 91 has a bottomed shape, and is a single positioning that protrudes downward (parallel to the central axis P1) fixed by welding or a fixture at the bottom bottom 91c and the center of the lower surface of the bottom 91c. A pin 91e (positioning protrusion). The positioning pin 91e protrudes along the central axis P1 on the central axis P1, and is formed of a metal such as stainless steel or ceramics.

  As shown in FIG. 3, a cylindrical inner passage 22 (in which a reforming catalyst carrier 20 a (contained material) is accommodated between the outer peripheral surface of the first cylinder 91 and the inner peripheral surface of the second cylinder 92. Gas passage and catalyst passage) are formed. A cylindrical outer passage 21 (gas passage, catalyst passage) in which the reforming catalyst carrier 20a is accommodated is formed by the outer peripheral surface of the third cylinder 93 and the inner peripheral surface of the fourth cylinder 94. . A first combustion passage 43 having a cylindrical shape is formed by the outer peripheral surface of the fourth cylinder 94 and the inner peripheral surface of the first heat insulating layer 41. The inner peripheral surface of the fifth cylinder 95 covers the outer peripheral surface of the first heat insulating layer 41. The outer peripheral surface of the fifth cylinder 95 and the inner peripheral surface of the sixth cylinder 96 form a second combustion passage 44 (gas passage) having a cylindrical shape. The upper opening of the sixth cylinder 96 is closed with a main lid 49. The outer peripheral surface of the sixth cylinder 96 and the inner peripheral surface of the seventh cylinder 97 form an evaporation section 50 formed in a cylindrical space. The outer peripheral surface of the seventh cylinder 97 and the inner peripheral surface of the eighth cylinder 98 are covered with a third heat insulating layer 48 having a ring shape or a cylindrical shape. The outer peripheral surface of the eighth cylinder 98 and the inner peripheral surface of the ninth cylinder 99 form a CO oxidation portion 53 having a ring shape or a cylindrical shape.

  As shown in FIG. 2, a metal main base 86 (base) is disposed below each cylinder. However, the main base 86 may be made of ceramics. The main base 86 has a first communication hole 86 f that communicates with the outer passage 21 of the reforming section 2 and a second communication hole 86 s that communicates with the inner passage 22 of the reforming section 2. The lower end of the third cylinder 93, the lower end of the fourth cylinder 94, and the lower end of the sixth cylinder 96 are fixed to the metal main base 86 by welding or the like. The lower ends of the first cylinder 91 and the second cylinder 92 are not in contact with the main base 86 and are not fixed to the main base 86. A ring-shaped lid 88 is joined to the upper end of the first cylinder 91 and the upper end of the fourth cylinder 94 by welding or a fixture.

  As shown in FIG. 3, a plate-shaped first gas passage member 110 (insertion member) having gas permeability is disposed below the outer passage 21 of the reforming unit 2. The first gas passage member 110 has a ring shape coaxial with the central axis P1, and is formed of a metal punching metal, a net member, or ceramics having a large number of through holes 110m penetrating in the thickness direction. . The first gas passage member 110 prevents the catalyst carrier 20a housed in the outer passage 21 from falling. A sub-base 87 is placed on the main base 86. The sub-base 87 is made of a refractory material or metal. A main gas passage member 150 having gas permeability is held between the sub-base 87 and the main base 86 to allow the reformed gas to pass therethrough. The main gas passage member 150 prevents the catalyst carrier 20a housed in the inner passage 22 from falling.

  As shown in FIG. 3, the lower end 92 d of the second cylinder 92 is not in contact with the main gas passage member 150 while approaching it. Therefore, a minute gap 92x (see FIG. 3) is formed between the lower end portion 92d and the main gas passage member 150. Therefore, even if the second cylinder 92 is thermally expanded in the axial direction, the lower end portion 92 d of the second cylinder 92 does not contact the main gas passage member 150. Therefore, damage to the lower end 92d of the second cylinder 92 and the main gas passage member 150 is suppressed. The minute gap 92x is set to such a size that the catalyst carrier 20a does not leak from here.

  As can be understood from FIGS. 2 and 3, the upper end (one end) of the first cylinder 91 is fixed to the upper end (one end) of the fourth cylinder 94 via a lid 88 by welding or a fixture. Has been. Therefore, the upper end portion (one end portion) of the first tube 91 has a free end shape before welding or before attachment of the fixture during assembly. Further, as can be understood from FIG. 2 and FIG. 3 at the time of assembly and use of the reformer 1, the lower ends of the first cylinder 91 and the second cylinder 92 constituting the reformer 20 are basically Is not in contact with the main base 86 and the sub-base 87, and is not fixed to the main base 86 and the sub-base 87, and has a free end shape. For this reason, it is not always easy to accurately position the first cylinder 91 in the radial direction when the reformer 1 is assembled. Therefore, when the reforming apparatus 1 is assembled as in the present embodiment, the positioning pin 91e of the first cylinder 91 can be inserted into the positioning hole 150e of the main gas passage member 150 to achieve high positioning performance in the radial direction. it makes sense.

  Further, when the reformer 1 is used, even if the upper end (one end) of the first cylinder 91 is fixed by the lid 88, the lower end (other end) of the first cylinder 91 is as described above. The second cylinder 92, the main base 86, and the sub base 87 are not in contact with each other and have a free end shape. If it is a free end shape, even when the reformer 1 is used, the lower end portion (the other end portion) of the first cylinder 91 is affected by the pressure of the gas flowing through the inner passage 22 and the outer passage 21. May be displaced in the radial direction. Therefore, as described above, inserting the positioning pin 91e of the first cylinder 91 into the positioning hole 150e of the main gas passage member 150 and restraining the first cylinder 91 in the radial direction is meaningful in order to suppress the above-described displacement. There is.

  Further explanation will be added. According to the present embodiment, the main gas passage member 150 (positioning part) has a large number of through holes 150m penetrating in the thickness direction as shown in FIG. For example, it is formed of a punching metal or a net member. The positioning hole 150e has a circular shape. The positioning pin 91e is also circular in cross section. Here, the positioning pin 91e of the first cylinder 91 is inserted (press-fitted) into the positioning hole 150e of the main gas passage member 150 in a penetrating state and engaged with the positioning hole 150e (see FIG. 7). Accordingly, the positioning pin 91e is restrained in the radial direction of the first cylinder 91. Therefore, when the reforming apparatus 1 is assembled, good positioning accuracy in the radial direction of the first cylinder 91 is ensured. Therefore, the first cylinder 91 occupying the main elements of the reforming unit 2 is ensured with good coaxiality with respect to the central axis P1.

  Therefore, it is possible to contribute to making the passage width of the inner passage 22 formed by the first cylinder 91 uniform in both the circumferential direction and the axial length direction. For this reason, temperature unevenness of the catalyst carrier 20a carrying the reforming catalyst in the inner passage 22 is reduced. Accordingly, unevenness of the catalytic reaction processing of the catalyst carrier 20a in the inner passage 22 is reduced. Therefore, the reforming reaction process in the inner passage 22 is favorably performed.

  As described above, the passage width of the outer passage 21 that communicates with the inner passage 22 can be reduced if it can contribute to uniformizing the passage width of the inner passage 22 both in the circumferential direction and in the axial direction. This can contribute to uniforming both in the circumferential direction and in the axial length direction. For this reason, also in the outer passage 21, the temperature unevenness of the catalyst carrier 20a carrying the reforming catalyst is reduced. As a result, unevenness of the catalytic reaction processing of the catalyst carrier 20a in the outer passage 21 is reduced. Therefore, the reforming reaction process in the outer passage 21 is favorably performed.

  Here, the positioning pin 91e of the first cylinder 91 and the positioning hole 150e of the main gas passage member 150 are set to be positioned on the central axis P1. For this reason, the coaxiality of the 1st pipe | tube 91 with respect to the central axis P1 can be improved reliably. As shown in FIG. 7, the positioning pin 91e has an inclined guide surface 91f whose outer diameter decreases toward the tip. This facilitates the operation of inserting the positioning pin 91e into the positioning hole 150e of the main gas passage member 150 (positioning portion).

  Furthermore, according to this embodiment, as shown in FIG. 2, the inner peripheral surface of the first cylinder 91 forms a combustion chamber 20 that generates the combustion flame 25c. Since the high coaxiality in the radial direction of the first cylinder 91 is obtained as described above, the displacement of the combustion chamber 20 in the radial direction is also suppressed. Therefore, it is advantageous to generate a good combustion flame 25c, and the combustion efficiency can be increased.

  As described above, according to the present embodiment, the positioning pin 91e of the first cylinder 91 is inserted into the positioning hole 150 of the main gas passage member 150 (positioning portion) to position the first cylinder 91 in the radial direction. For this reason, even when the reformer is assembled and when the reformer is used, the displacement of the first cylinder 91 in the radial direction is effectively suppressed.

  Furthermore, since the positioning pin 91e of the first cylinder 91 is only inserted into the positioning hole 150 of the main gas passage member 150 (positioning portion), the lower end portion of the first cylinder 91 extends in the extending direction of the central axis P1. Along the free end. Therefore, the lower end portion of the first tube 91 is constrained in the direction perpendicular to the central axis P1, but has a free end along the direction in which the central axis P1 extends. In other words, when the reforming device 1 is assembled, the displacement of the positioning pin 91e and the first cylinder 91 is ensured satisfactorily in the direction in which the central axis P1 extends. Therefore, even when the amount of thermal expansion in the direction in which the central axis P1 extends is large, the thermal expansion absorbing action of the first cylinder 91 is obtained well.

  Further, according to the present embodiment, the flow directions of the combustion gas and the reformed gas are reversed, and the heating efficiency of the reformed gas can be increased. Moreover, since the 1st pipe | tube 91 is a suspended state, the temperature maintenance property of the modification part 20 can be improved. Further, the first cylinder 91 has a bottom portion 91c. The positioning pin 91e protrudes along the central axis P1i downward in the center of the bottom 91c of the first cylinder 91. Here, since the inner peripheral surface of the first cylinder 91 forms the combustion chamber 20 in which the combustion flame is generated, the bottom portion 91c of the first cylinder 91 faces the combustion flame and tends to be heated to a high temperature. In this regard, according to the present embodiment, as much as the surface area of the positioning pin 91e, the heat radiation area of the first tube 91 is increased, and overheating of the bottom 91c is suppressed. Further, the temperature of the catalyst carrier 20a in the vicinity of the positioning pin 91e, that is, on the outlet 2p side of the reforming unit 20, can be increased, which is advantageous for the reforming reaction. Further, at least a part of the positioning pin 91e is frequently in contact with the inner wall surface 150h forming the positioning hole 150e of the main gas passage member 150 (positioning portion) (see FIG. 7). That is, as shown in FIG. 7, when the outer diameter of the positioning pin 91e is DA and the inner diameter of the positioning hole 150e is DB, DA = DB and DA≈DB. In this case, even when the bottom 91c of the first cylinder 91 becomes hot due to the combustion flame, the heat of the bottom 91c of the first cylinder 91 is on the main gas passage member 150 (positioning part) side via the positioning pin 91e. Is transmitted to the main base 86 side. For this reason, overheating of the bottom part 91c of the 1st pipe | tube 91 heated with a combustion flame is suppressed further. In some cases, the positioning performance may be slightly lowered, but DA> DB may be set so that a minute gap is formed between the positioning pin 91e and the inner wall surface 150h of the positioning hole 150e. Furthermore, the catalyst carrier 20a in the vicinity of the positioning pin 91e can be heated as high as possible, and the reforming reactivity can be improved.

  For this reason, it becomes advantageous to suppress the temperature unevenness of the inner passage 22 formed by the first cylinder 91 in the reforming section 2. As a result, it becomes advantageous to suppress temperature unevenness of the catalyst carrier 20a carrying the reforming catalyst loaded in the inner passage 22. Therefore, it is advantageous to reduce the unevenness of the reforming reaction process in the catalyst carrier 20a carrying the reforming catalyst. If the positioning pin 91e and the main gas passage member 150 are made of the same material or similar materials, the amount of thermal expansion of the positioning pin 91e and the amount of thermal expansion of the main gas passage member 150 are matched to maintain the above contact degree. Is advantageous. However, the positioning pin 91e and the main gas passage member 150 may be formed of different materials. According to this embodiment, since the positioning pin 91e has a large aspect ratio (length / diameter) and the positioning pin 91e has a long axis shape, the passage of the reformed gas below the bottom portion 91c of the first cylinder 91 is improved. Damage is suppressed. The aspect ratio can be set, for example, within a range of 2-100, within a range of 2-50, and within a range of 3-20. Since the positioning pin 91e is fixed to the bottom 91c of the first cylinder 91 by welding or a fixture, the length and / or the diameter of the positioning pin 91e can be changed even when the type of the reformer 1 is changed. This can be dealt with by changing the size of the positioning hole 150e.

  As shown in FIG. 3, a second gas passage member 120 having a gas-permeable plate shape is held in the lower part of the CO oxidation unit 53. A third gas passage member 130 having a gas-permeable plate shape is held in the upper portion of the CO oxidation portion 53. The second gas passage member 120 and the third gas passage member 130 have a ring shape that is coaxial with the central axis P1, and have a number of through holes 120m and 130m penetrating in the thickness direction. Or it is formed with ceramics. The second gas passage member 120 prevents the catalyst carrier 53a (contained material) of the CO oxidation unit 53 from falling. The third gas passage member 130 covers the catalyst carrier 53a of the CO oxidation unit 53 while ensuring gas permeability. In the CO oxidation unit 53, a lower space 53d having a ring shape is formed below the second gas passage member 120, and an upper space 53u having a ring shape is formed above the second gas passage member 120. Yes.

  Furthermore, according to this embodiment, as shown in FIGS. 1 and 4, the mixing unit 80 having the mixing chamber 81 is provided. The mixing chamber 81 is provided adjacent to the shift unit 60 and downstream of the shift unit 60, and is positioned upstream of the CO oxidation unit 53. The central axis of the mixing chamber 81 is coaxial with the central axis P1. In the mixing chamber 81, a reformed gas that may contain carbon monoxide (toxic gas) generated in the reforming unit 2 (the reformed gas that flows through the shift unit 60 and is supplied to the CO oxidation unit 53). ) And air (oxygen-containing gas) is supplied from the inlet 70i of the air passage 70 and mixed.

  As shown in FIG. 4, the mixing chamber 81 forms a ring-shaped or cylindrical space that goes around the central axis P1. The second shift passage 61s as the reformed gas passage forms a passage extending with respect to the axis line (center axis line P1) of the mixing chamber 81. Therefore, the second shift passage 61s (reformed gas passage) flows the reformed gas along the direction in which the second shift passage 61s extends, that is, along the arrow G direction (upward). On the other hand, the air passage 70 functioning as an oxygen-containing gas passage directs air (oxygen-containing gas) in the radial direction (arrow R direction) along the direction perpendicular to the central axis P1 of the mixing chamber 81. Shed.

  Here, as shown in FIG. 4, a direction changing portion 82 is provided on the inner peripheral side of the mixing chamber 81. The direction changing unit 82 has a function of guiding the reformed gas supplied from the second shift passage 61s as the reformed gas passage and air to collide with each other. Specifically, in the cross section passing through the central axis line P1 (FIGS. 1 and 4), the direction changing portion 82 is provided so as to make one round around the central axis line P1, and is substantially straight with respect to the central axis line P1. It has the inclined surface 82a inclined in the shape (linear cross section). The inclination angle θ1 of the inclined surface 82a with respect to the direction parallel to the central axis P1 can be in the range of 20 to 80 degrees, in the range of 30 to 60 degrees, or in the range of 35 to 55 degrees.

  As shown in FIG. 4, the direction changing part 82 is inclined with respect to the central axis P1 of the mixing chamber (reforming part 2). The direction changing part 82 is inclined so as to reduce in diameter as it goes downward in the direction of gravity. That is, the direction change part 82 inclines so that it may expand in diameter as it goes upwards. When the air is not supplied to the mixing chamber 81, the direction changing unit 82 causes the reformed gas flowing in the second shift passage 61 s in the direction indicated by the arrow G (the direction along the central axis P <b> 1) to flow outward in the mixing chamber 81. Directed in the direction of arrow S. Further, when the reformed gas is not flowing, the direction changing unit 82 causes the air flowing in the direction of the arrow R in the air passage 70 to flow in the direction in which the axis (center axis P1) of the mixing chamber 81 extends in the mixing chamber 81. Directed in the direction of arrow T shown in FIG. As a result, in the mixing chamber 81, the direction changing unit 82 guides the reformed gas and air so that the reformed gas and air collide with each other. For this reason, the reformed gas and air tend to collide with each other in the mixing chamber 81. Therefore, turbulent flow proceeds in the mixing chamber 81, and the mixing property of the reformed gas and air in the mixing chamber 81 can be enhanced.

  According to the present embodiment, the direction changing portion 82 is formed by expanding the base end portion 62b of the inner cylinder 62 into a conical shape in the radially outward direction. As described above, since the direction changing part 82 is formed by a part of the inner cylinder 62, no separate parts are required, and the number of parts can be reduced. The above-described inner cylinder 62 functions as a partition member that partitions the first shift passage 61 f of the shift unit 60 and the mixing unit 80. The mixing chamber 81 is formed using an inner cylinder 62 (partition member) that partitions the first shift passage 61 f of the shift unit 60 and the mixing unit 80. In this case, the first shift passage 61f and the mixing unit 80 of the shift unit 60 are provided adjacent to each other via the inner cylinder 62 (partition member).

  FIG. 6 schematically shows a conceptual form in which the mixed state is visually recognized from a plane. As shown in FIG. 6, the reformed gas supplied to the mixing chamber 81 is directed in the radially outward direction (arrow S direction) by the direction changing unit 82. On the other hand, the air supplied to the mixing chamber 81 from the inlet 70i of the air passage 70 is directed in the radial direction (arrow R direction) and further hits the direction changing portion 82, and then the arrow T direction (see FIG. 4). Orient. For this reason, especially in the vicinity of the inlet 70i of the air passage 70, the degree of collision as a counterflow between the air and the reformed gas increases. Thereby, the turbulent flow in the mixing chamber 81 is promoted. Therefore, the uniform mixing property of the air and the reformed gas in the mixing chamber 81 is increased. In particular, in the vicinity of the inlet 70i of the air passage 70, the above-described uniform mixing property increases.

Here, the inlet 70 i of the air passage 70 is provided at a position farthest from the outlet 81 p in the mixing chamber 81. The air supplied from the inlet 70 i of the air passage 70 to the mixing chamber 81 flows along the circumferential direction of the mixing chamber 81 and is discharged from the outlet 81 p of the mixing chamber 81. As described above, if the mixing property of the air and the reformed gas in the mixing chamber 81 is improved, when the reformed gas containing air is supplied from the inlet 53i to the CO oxidation unit 53, the CO oxidation reaction in the CO oxidation unit 53 is performed. Processing can be carried out satisfactorily. Here, since the amount of air to be mixed is overwhelmingly small with respect to the amount of the reformed gas (the gas after passing through the shift portion), it is difficult to uniformly mix the two. The main component of the reformed gas is hydrogen, and the main components of air are oxygen and nitrogen. The specific gravity of the two is quite different, and it is difficult to uniformly mix the two. In order to promote the reaction between the two, it is important to mix them uniformly. If the configuration in which the direction changing portion 82 is formed in the mixing chamber 81 is adopted, the uniform mixing property of hydrogen and oxygen in the mixing chamber 81 is improved. In addition, since the oxygen concentration is reduced downstream of the CO oxidation unit 53, a CO reduction effect by the methanation reaction process (CO + 3H ₂ → CH ₄ + H ₂ O) can also be expected.

Furthermore, according to the present embodiment, as shown in FIG. 4, the mixing chamber 81 to which air is supplied is adjacent to the inlet 60 i and the outlet 60 p of the shift unit 60. For this reason, it can be expected that the inlet 60i of the shift unit 60 that performs the shift reaction process with heat generation is actively cooled by air (atmosphere). In this case, excessive temperature increase in the shift unit 60 is suppressed. Therefore, it is possible to promote the shift reaction process by the shift unit 60 and contribute to the reduction of carbon monoxide. Here, the shift reaction treatment is based on the above formula (2) (CO + H ₂ O → H ₂ + CO ₂ ). If the shift unit 60 is excessively heated, the above-described shift reaction process with heat generation is likely to be hindered. As can be understood from FIG. 4, when the reformed gas flowing on the outer peripheral side hits the inclined surface 82c of the direction changing section 82 at the inlet 60i of the shift section 60, the reformed gas is directed in the direction of the arrow KA (see FIG. 4). Guidance is directed toward the central axis P1.

  Furthermore, according to this embodiment, as shown in FIG. 6, the mixing chamber 81 is extended in the ring shape (or cylinder shape) around the central axis P1. Therefore, a passage distance (passage distance from the inlet 70i to the outlet 81p) flowing through the mixing chamber 81 itself is secured. Therefore, a mixing distance for mixing the air and the reformed gas in the mixing chamber 81 can be secured, which is advantageous for further improving the mixing property of the air and the reformed gas.

  In addition, according to the present embodiment, as shown in FIG. 1, a passage extending from the outlet 81 p of the mixing chamber 81 of the mixing unit 80 adjacent to the shift unit 60 to the inlet 53 i of the CO oxidation unit 53. 85 is extended. That is, the mixing chamber 81 of the mixing unit 80 is disposed upstream of the CO oxidation unit 53, and there is a passage distance of a passage 85 that connects the mixing chamber 81 and the CO oxidation unit 53. For this reason, when the reformed gas containing air flows through the passage 85, the reformed gas and air can be further mixed by diffusion or the like in the passage 85 (pipe upstream of the CO oxidation unit 53), thereby further improving the mixing property. It can be expected to increase further. Therefore, it is advantageous to improve the oxidation reaction processability in the CO oxidation part 53.

  Further, according to the present embodiment, as described above, as shown in FIG. 4, the shift unit 60 forms the first shift passage 61f that houses the catalyst carrier 60a carrying the shift catalyst and flows the reformed gas. The inner cylinder 62, the outer cylinder 63 that houses the catalyst carrier 60 a that supports the shift catalyst and that forms the second shift passage 61 s through which the reformed gas flows, and the inner cylinder 62 so as to face the front end portion 62 c of the inner cylinder 62. And a first perforated plate 64 disposed along the direction perpendicular to the axis of the outer cylinder 63. The first perforated plate 64 has a through hole 64m penetrating in the thickness direction.

  As shown in FIG. 5, a minute gap 68 having a gap width K <b> 1 is formed between the distal end portion 62 c of the inner cylinder 62 and the first porous plate 64. Thereby, even when the thermal expansion along the axial direction of the inner cylinder 62 is large, the tip end portion 62c of the inner cylinder 62 is prevented from colliding with the first porous plate 64 excessively. Accordingly, the first perforated plate 64 and the inner cylinder 62 are made thin, and their life and durability are ensured. In particular, deformation of the first porous plate 64 having a large number of through holes 64m is suppressed.

  Now, the main part of the present embodiment will be described with reference to FIGS. 8 and 9 show a cross section of the main part cut along the direction of gravity. FIG. 8 shows a case where the third cylinder 93 and the fourth cylinder 94 (the reforming apparatus 1) are at fixed positions in the vertical direction. The fixed position is used in many operations at the time of assembling the reformer 1, and is further used when the reformer 1 is used. As shown in FIG. 8, the first gas passage member 110 has a ring shape that is coaxial with the central axis P1, and is disposed below the outer passage 21 (gas passage) that houses the catalyst carrier 20a. And the fall of the catalyst carrier 20a accommodated in the outer passage 21 is suppressed.

In FIG. 8, the arrow RW direction indicates the radial direction of the third cylinder 93 and the fourth cylinder 94. In the arrow RW direction, the first gas passage member 110 faces the one end portion 110e that is the inner edge portion in the radial direction facing the third tube 93 (first tube member) and the fourth tube 94 (second tube member). has a second end portion 110 f is the outer edge in the radial direction, the upper surface 110u facing the catalyst carrier 20a, a lower surface 110d, a ring hole 110r.

  As shown in FIG. 8, the third cylinder 93 has a first inclined portion 300 provided below the one end portion 110 e of the first gas passage member 110 in the fixed position. The first inclined portion 300 moves from the one end portion 110e side of the first gas passage member 110 toward the other end portion 110f side from the one end portion 110e side of the first gas passage member 110 toward the lower side of the gravity direction (arrow GD direction). It has an inclination which goes to, ie, goes to the direction of arrow X1 (outward direction). Thereby, the one end part 110e of the first gas passage member 110 is engaged with and supported by the first inclined part 300. As a result, when the third cylinder 93 and the fourth cylinder 94 are in the fixed positions as shown in FIG. 8, the first gas passage member 110 is suppressed from being separated downward due to gravity. Therefore, even when the catalyst carrier 20a in the outer passage 21 (gas passage) has a weight at a fixed position, the upper surface 110u of the first gas passage member 110 can favorably support the catalyst carrier 20a.

  Further, as shown in FIG. 8, the fourth cylinder 94 has a second inclined portion 400. The second inclined part 400 is inclined in the same direction as the first inclined part 300. At the fixed position, the second inclined portion 400 moves from the other end portion 110f side of the first gas passage member 110 toward the upper side in the gravity direction (arrow GU direction) from the other end portion 110f side of the first gas passage member 110. It has an inclination toward the one end 110e side, that is, toward the arrow X2 direction (the direction opposite to the arrow X1 direction) which is the radial direction. In the fixed position, the second inclined portion 400 is disposed above the other end portion 110f of the first gas passage member 110.

  On the other hand, FIG. 9 shows a case where the third cylinder 93 and the fourth cylinder 94 are turned upside down with respect to the fixed position. The upper surface 110u is on the lower side, and the lower surface 110d is on the upper side. Such a reversal position is used in a certain operation at the time of assembling the reformer 1, and is not basically used when the reformer 1 is used. As shown in FIG. 9, when the third cylinder 93 and the fourth cylinder 94 are turned upside down, the second inclined portion 400 of the fourth cylinder 94 (second cylinder member) is not limited to the first gas passage member 110. Engages on the end 110f side. Thereby, in the assembly work of the reformer 1, when the first cylinder 93 and the second cylinder 94 are turned upside down, the first gas passage member 110 is suppressed from being separated downward due to gravity, and the work efficiency is improved. improves.

  Here, as shown in FIG. 8, the second inclined portion 400 and the first inclined portion 300 are inclined in the same direction and run in parallel. Furthermore, the second inclined portion 400 has a counterpart inclined portion 401 that is extended so as to run along the first inclined portion 300 while facing the first inclined portion 300. For this reason, the passage width tc (see FIG. 8) between the inclined portions 300 and 400 is ensured satisfactorily, and gas permeability is ensured. In addition, the 1st inclination part 300, the 2nd inclination part 400, and the other party inclination part 401 have comprised the cone shape which makes one round around the central axis P1, respectively.

  When assembling, generally, the ring-shaped first gas passage member 110 is fitted on the outer circumference of the third cylinder 93, and then the fourth cylinder 94 is fitted on the outer circumference of the third cylinder 93.

  In the fixed position shown in FIG. 8, the weight of the reforming catalyst 20 a that is a stored material acts on the first gas passage member 110. Since the one end portion 110e of the first gas passage member 110 is directly supported by the first inclined portion 300, it is possible to cope with the weight of the reforming catalyst 20a located directly above the one end portion 110e. On the other hand, the other end portion 110 f of the first gas passage member 110 is not directly supported by the first inclined portion 300 or the second inclined portion 400. However, as shown in FIG. 8, at the fixed position, the second inclined portion 400 is provided above the other end portion 110f, and therefore, the reforming catalyst 20a positioned right above the other end portion 110f has one end. There is a small amount of small area WA compared to the portion 110e. For this reason, even if the other end portion 110f is not directly supported, it is possible to cope with the weight of the reforming catalyst 20a located directly above the other end portion 110f.

  Next, the case of the CO oxidation unit 53 will be described with reference to FIGS. 10 and 11 show a cross section of the main part cut along the direction of gravity. As shown in FIG. 10, the second gas passage member 120 is disposed below the gas passage 53 s of the CO oxidation unit 53, and suppresses the fall of the catalyst carrier 53 a accommodated in the CO oxidation unit 53. As shown in FIG. 10, in the radial direction (arrow RW direction), the second gas passage member 120 includes an end 120 e that is an outer edge facing the ninth cylinder 99 (first cylinder member), and an eighth cylinder 98. It has the other end part 120f which is an inner edge part which faces (2nd cylinder member), the upper surface 120u, the lower surface 120d, the through-hole 120m, and the ring hole 120r.

  FIG. 10 shows a case where the eighth cylinder 98 and the ninth cylinder 99 are in fixed positions in the vertical direction. The fixed position is used in many operations at the time of assembling the reformer 1, and is further used when the reformer 1 is used. As shown in FIG. 10, in the case of the fixed position, the ninth cylinder 99 (first cylinder member) has a first inclined portion 500 that engages with the one end 120 e side of the second gas passage member 120. The first inclined portion 500 moves from the one end portion 120e side of the second gas passage member 120 toward the other end portion 120f side from the one end portion 120e side of the second gas passage member 120 toward the lower side in the direction of gravity (arrow GD direction). It has an inclination which goes to the direction of the arrow X3 (inward direction). Thus, when the ninth cylinder 99 and the eighth cylinder 98 are in the fixed positions, the one end portion 120e of the second gas passage member 120 is engaged with the first inclined portion 500 located below the second gas passage member 120. As a result, the second gas passage member 120 is suppressed from being separated downward due to gravity. Therefore, even when the catalyst carrier 53a, which is a material contained in the passage (gas passage) of the CO oxidation unit 53, is weighted, the second gas passage member 120 is not in the above-mentioned fixed position shown in FIG. Can be favorably supported.

  As shown in FIG. 10, the eighth cylinder 98 (second cylinder member) has a second inclined portion 600. In the fixed position, the second inclined portion 600 is disposed on the upper side of the other end portion 120 f of the second gas passage member 120 and is inclined in the same direction as the first inclined portion 500.

  In the fixed position, as shown in FIG. 10, the second inclined portion 600 increases from the other end 120 f side of the second gas passage member 120 toward the upper side in the direction of gravity (arrow GU direction). The other end portion 120f is inclined toward the one end portion 120e side, that is, toward the arrow X4 direction (radially outward direction) opposite to the arrow X3 direction.

  On the other hand, FIG. 11 shows a case where the ninth cylinder 99 and the eighth cylinder 98 are turned upside down with respect to the fixed positions. Such a reversal position is used in a certain operation at the time of assembling the reformer 1, and is not basically used when the reformer 1 is used. As shown in FIG. 11, when the ninth cylinder 99 and the eighth cylinder 98 are turned upside down, the upper surface 120u of the second gas passage member 120 is on the lower side and the lower surface 120d is on the upper side. In the reverse position, the second inclined portion 600 of the eighth cylinder 98 is located below the other end portion 120f of the second gas passage member 120 and engages with the other end portion 120f. As a result, when the ninth cylinder 99 and the eighth cylinder 98 are turned upside down, the second gas passage member 120 is suppressed from being detached downward due to gravity. Here, since the first inclined portion 500 and the second inclined portion 600 are inclined in the same direction, the passage width td (see FIG. 11) between the first inclined portion 500 and the second inclined portion 600 is good. Secured. Each of the first inclined portion 500 and the second inclined portion 600 has a conical shape that makes one round around the central axis P1.

  Further, at the fixed position shown in FIG. 10, the weight of the oxidation catalyst 53 a acts on the second gas passage member 120. One end 120 e of the second gas passage member 120 is directly supported by the first inclined portion 500. For this reason, the one end part 120e can cope with the weight of the reforming catalyst 20a located directly above the one end part 120e. On the other hand, the other end 120 f of the second gas passage member 120 is not directly supported by the first inclined portion 500 or the second inclined portion 600. However, in the fixed position shown in FIG. 10, the second inclined portion 600 is provided above the other end portion 120f. Therefore, there is a small amount of region WB in which the oxidation catalyst 53a located immediately above the other end portion 120f is smaller than the one end portion 120e. For this reason, even if the other end 120f is not directly supported, it is possible to cope with the weight of the oxidation catalyst 53a located directly above the other end 120f.

  According to this embodiment as described above, the first gas passage member 110 and the second gas passage member 120 may not be fixed by welding, brazing, or the like. As described above, when the first gas passage member 110 and the second gas passage member 120 are equipped, since the welded portion and the brazed portion can be eliminated, the deformation of the welded portion and the brazed portion due to thermal expansion is suppressed, Durability is improved.

  An example of the assembly procedure will be described. (1) The second heat insulating layer 47 is sandwiched between the second cylinder 92 and the third cylinder 93. In this state, the second cylinder 92 and the upper part of the third cylinder 93 in FIG. 3 are welded to join the second cylinder 92 and the third cylinder 93 into a combined body. (2) The combined body is positioned with respect to the first cylinder 91 and the sub-base 87 and the main gas passage member 150 are disposed. (3) The ring-shaped first gas passage member 110 is inserted into the outside of the third cylinder 93 from above. (4) The fourth cylinder 94 is disposed, and the catalyst carrier 20a that supports the reforming catalyst is placed in the space serving as the reforming section. (5) A cover 88 is attached. (6) The fifth cylinder 95, the sixth cylinder 96, and the seventh cylinder 97 are attached to the combined body, and then the combined body is turned upside down. In this case, the fifth cylinder 95, the sixth cylinder 96, and the seventh cylinder 97 may be mounted upside down. (7) The eighth cylinder 98 is attached to the outside of the seventh cylinder 97, and the joint between the seventh cylinder 97 and the eighth cylinder 98 is welded. (8) The second gas passage member 120 is inserted outside the eighth cylinder 98 in the state of being inverted upside down. (9) The ninth cylinder 99 is attached, and the coupling portion between the seventh cylinder 97 and the ninth cylinder 99 is welded and coupled. (10) Undo inversion of the conjugate. Thereafter, an oxidation catalyst 53a for CO oxidation is added. (11) The ring-shaped third gas passage member 130 and the outlet member of the CO oxidation unit 53 are attached. In order to work by inverting vertically as described above, the position where the eighth cylinder 98 and the ninth cylinder 99 are attached to the seventh cylinder 97 is on the inner side (center axis side) with respect to the catalyst layer. Good workability such as welding. In addition, after forming the reforming part, it is better to work upside down when attaching the shift part and assembling the heat insulating layer.

(Embodiment 2)
FIG. 12 shows a second embodiment. The present embodiment shows basically the same configuration and operational effects as the first embodiment. As shown in FIG. 12, a ring-shaped reinforcing rib 118 extends toward the direction away from the outer passage 21 at the other end portion 110 f of the first gas passage member 110 </ b> B. That is, the reinforcing rib 118 is extended downward at a fixed position. Therefore, the other end portion 110f of the first gas passage member 110B is reinforced by the reinforcing rib 118. Even if the other end portion 110f is not directly supported by the fourth cylinder 94, the other end portion 110f is reinforced by the reinforcing rib 118, so that the other end portion 110f of the first gas passage member 110B is connected to the outer passage 21. It is possible to satisfactorily counter the weight load of the accommodated catalyst carrier 20a.

(Embodiment 3)
FIG. 13 shows a third embodiment. The present embodiment shows basically the same configuration and operational effects as the first embodiment. FIG. 13 shows a case where the third cylinder 93 (first cylinder member) and the fourth cylinder 94H (second cylinder member) are not turned upside down and are in a fixed position. As shown in FIG. 13, the third cylinder 93 includes a first inclined portion 300 that engages with and supports the one end portion 110 e of the first gas passage member 110 in the fixed position. Thereby, the one end 110e of the first gas passage member 110 is engaged with and supported by the first inclined portion 300. As a result, as shown in FIG. 13, when the third cylinder 93 and the fourth cylinder 94H are in the fixed positions in the vertical direction, the first gas passage member 110 is suppressed from being separated downward due to gravity. Therefore, at the fixed position, the first gas passage member 110 can favorably support the catalyst carrier 20a in the outer passage 21 (gas passage). Therefore, the first gas passage member 110 may not be fixed to the third cylinder 93 by welding or brazing. However, as shown in FIG. 13, in the fourth cylinder 94H, the second inclined portion that engages with the other end portion 110f of the first gas passage member 110 at the time of upside down is higher than the first inclined portion 300. Not provided. The second gas passage member 120 may also be supported by the structure shown in FIG.

(Embodiment 4)
FIG. 14 shows a fourth embodiment. The present embodiment shows basically the same configuration and operational effects as the first embodiment. FIG. 14 shows a case where the third cylinder 93 and the fourth cylinder 94K are not turned upside down and are in a fixed position. As shown in FIG. 14, the third cylinder 93 has a first inclined portion 300 that can be engaged with the one end 110 e side of the first gas passage member 110 in the fixed position. As a result, the one end portion 110 e of the first gas passage member 110 is engaged with the first inclined portion 300. As a result, as shown in FIG. 14, when the third cylinder 93 and the fourth cylinder 94K are at fixed positions in the vertical direction, the first gas passage member 110 is suppressed from being separated downward due to gravity. Therefore, at the fixed position, the first gas passage member 110 can favorably support the catalyst carrier 20a in the outer passage 21 (gas passage). Therefore, the first gas passage member 110 may not be fixed to the third cylinder 93 by welding or brazing.

  However, as shown in FIG. 14, in the fourth cylinder 94 </ b> K, the second inclined portion that engages with the other end portion 110 f of the first gas passage member 110 at the time of upside down is higher than the first inclined portion 300. Not provided. In the fourth cylinder 94 </ b> K, a mating inclined portion 943 that is inclined in the same direction as the first inclined portion 300 while facing the first inclined portion 300 is provided. Thus, in the fixed position, the inclined parallel running portion 943 is inclined in the same direction as the first inclined portion 300 and is disposed below the first gas passage member 110. The second gas passage member 120 may also be supported by the structure shown in FIG.

(Embodiment 5)
15 to 17 show the fifth embodiment. The present embodiment shows basically the same configuration and operational effects as the first embodiment. The sixth cylinder 96 and the fifth cylinder 95 form a second combustion passage 44 (gas passage) that forms a cylindrical space. Between the sixth cylinder 96 and the fifth cylinder 95, heat transfer fins 46 (heat transfer members) made of metal are inserted as insertion members. The heat transfer fin 46 has a peak portion 46m that comes into contact with the sixth cylinder 96 and the fifth cylinder 95 so as to be able to transfer heat, and end portions 46a and 46c in the circumferential direction.

  16 and 17 show a cross section of the main part cut along the direction of gravity. As shown in FIG. 16, in the radial direction (arrow RW direction) of the fifth cylinder 95 and the sixth cylinder 96, the heat transfer fin 46 is one end that is an outer edge portion facing the sixth cylinder 96 (first cylinder member). Portions 46ed and 46eu, and other end portions 46fd and 46fu which are radially inner edges facing the fifth cylinder 95 (second cylinder member), and further include an upper surface 46u and a lower surface 46d. The one end 46ed and the other end 46fd are located on the lower side. The one end 46eu and the other end 46fu are located on the upper side.

  FIG. 16 shows a case where the position is fixed in the vertical direction. The fixed position is used in many operations at the time of assembling the reformer 1, and is further used when the reformer 1 is used. As shown in FIG. 16, in the case of the fixed position, the sixth cylinder 96 has a first inclined portion 700 that engages with the one end portion 46ed side of the heat transfer fin 46. The first inclined portion 700 is directed from the one end portion 46ed side of the heat transfer fin 46 to the lower side in the direction of gravity (arrow GD direction) from the one end portion 46e side of the heat transfer fin 46 toward the other end portion 46f side. That is, it has an inclination toward the arrow X3 direction (inward radial direction). Thus, when the position is fixed, the one end portion 46ed of the heat transfer fin 46 is engaged with and supported by the first inclined portion 700 on the lower side. As a result, the heat transfer fins 46 are prevented from separating downward due to gravity.

  As shown in FIG. 16, the fifth cylinder 95 (second cylinder member) has a second inclined portion 800. The second inclined portion 800 is inclined in the same direction as the first inclined portion 700 with respect to the central axis P1. In the fixed position shown in FIG. 16, the second inclined portion 800 is disposed above the other end portion 46 fu of the heat transfer fin 46. In the fixed position, the second inclined portion 700 extends from the other end 46fu side of the heat transfer fin 46 toward the upper end in the direction of gravity (arrow GU direction) from the other end 46fu side to the one end 46eu side. In the direction of the arrow X4 (outward direction) which is opposite to the direction of the arrow X3.

  On the other hand, FIG. 17 shows a case where the vertical position is reversed with respect to the fixed position. Such a reversal position is used in a certain operation at the time of assembling the reformer 1, and is not basically used when the reformer 1 is used. When upside down, as shown in FIG. 17, the upper surface 46u of the heat transfer fin 46 is on the lower side and the lower surface 46d is on the upper side. The second inclined portion 800 of the fifth cylinder 95 is located below the other end portion 46fu below the heat transfer fin 46, and engages with and supports the lower other end portion 46fu. Accordingly, when the plate is turned upside down, the second inclined portion 800 prevents the heat transfer fins 46 from being separated downward due to gravity.

  Further, as shown in FIG. 16, the fifth cylinder 95 is formed with a counterpart inclined part 710 that faces the first inclined part 700 of the sixth cylinder 96 and is inclined in the same direction. For this reason, the passage width tx between the 1st inclination part 700 and the other party inclination part 710 is maintained favorably, and gas permeability is ensured. Further, as shown in FIG. 16, the sixth cylinder 96 is formed with a counterpart inclined part 810 that is inclined in the same direction while facing the second inclined part 800 of the fifth cylinder 95. For this reason, the passage width ty between the second inclined portion 800 and the counterpart inclined portion 810 is well maintained, and gas permeability is ensured.

  In addition, the 1st inclination part 700, the 2nd inclination part 800, the other party inclination part 710, and the other party inclination part 810 have comprised the cone shape which makes one circumference | surroundings around the center axis line P1, respectively. According to the present embodiment as described above, the heat transfer fins 46 need not be fixed by welding, brazing, or the like, as described above. Since the welded portion and the brazed portion can be eliminated, deformation of the welded portion and the brazed portion due to thermal expansion is suppressed, and the durability of the heat transfer fin 46 is improved.

(Other)
In the first embodiment described above, the first gas passage member 110 is formed in a continuous ring shape so as to continuously make a round around the central axis P1, but not limited to this, the first gas passing member 110 is 1 around the central axis P1. Although it goes around, it may be divided into a plurality of arcs. The second gas passage member 120 is formed in a continuous ring shape so as to continuously make a round around the central axis P1. However, the second gas passing member 120 is not limited to this, but has a plurality of rounds around the central axis P1. It may be divided into a plurality of arcs.

  The positioning pin 91e and the positioning hole 150e are provided in the central axis P1, but are not limited to this, and may be positioned away from the central axis P1 in the radial direction. In short, any position may be used as long as a cylinder such as the first cylinder 91 can be positioned in the radial direction thereof.

  In the first embodiment, the reformed gas is applied to the direction changing unit 82 to change the direction in the radially outward direction in the mixing chamber 81. However, the present invention is not limited thereto, and the reformed gas is applied to the direction changing unit to mix the mixing chamber. In this case, the direction may be changed toward the radially inward direction to cause collision with air. In this case, the air is supplied to the mixing chamber 81 so as to be directed outward in the radial direction. Although air is supplied to the mixing chamber 81, the present invention is not limited to this, and oxygen gas may be supplied. An oxygen-enriched gas enriched in oxygen concentration may be supplied. The direction changing portion 82 is inclined so as to decrease in diameter as it goes downward in the gravitational direction, but is not limited thereto, and may be configured to be inclined so as to decrease in diameter as it goes upward in the gravitational direction. it can. In this case, the reformed gas flowing downward hits the direction changing portion and is changed in direction. The number of the inlets 70i of the air passage 70 for supplying air to the mixing chamber 81 is not particularly limited, and may be plural.

  In the first embodiment, the reforming unit 2 includes both the inner passage 21 and the outer passage 22, but is not limited thereto, and only one of them may be used. The evaporation unit 50 is integrated with the reforming unit 2, but is not limited thereto, and the evaporation unit 50 may be separated from the reforming unit 2. Although the shift unit 60 is integrally connected to the reforming unit 2, the shift unit 60 may be separated from the reforming unit 2 without being limited thereto. In some cases, the shift unit 60 may be eliminated. The warm-up unit 55 may be provided as necessary. Although the reforming unit 2 is disposed above the shift unit 60, the present invention is not limited thereto, and the reforming unit 2 may be disposed below or beside the CO shift unit 60. Although the combustion unit 25 is disposed above the reforming unit 2, it may be disposed below the reforming unit 2. In some cases, the first heat insulation layer 41 and the third heat insulation layer 48 may be eliminated.

  In the first embodiment, the reforming unit 2, the CO oxidation unit 53, and the evaporation unit 50 are arranged coaxially, but they may not be coaxial and may be non-coaxial types. Each catalyst is not limited to those described above. The catalyst carrier 20a carrying the reforming catalyst, the catalyst carrier 60a carrying the shift catalyst, and the catalyst carrier 53a carrying the oxidation catalyst are in the form of particles. However, the present invention is not limited to this. But it ’s okay. In the first embodiment, the catalyst carrier 60a supporting the shift catalyst is not accommodated in the mixing chamber 81, but may be accommodated in some cases. Instead of the CO oxidation part 53, a methanation reaction part that reduces carbon monoxide by a methanation reaction may be used. The covering layer 200 and the positioning pin 91e may be provided as necessary. The present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications within a range not departing from the gist. Examples of the stainless steel used for the first cylinder 91 to the ninth cylinder 99 are SUS310 and SUS304, NCA-1 (Nisshin Steel Co., Ltd., ferritic stainless steel for high-temperature oxidation containing aluminum), etc. Is exemplified. The pipe used for the reformer 1 is exemplified by SUS316L.

  The present invention can be used in a reformer used in a fuel cell system.

It is a longitudinal cross-sectional view cut | disconnected along the gravity direction which concerns on Embodiment 1 and shows a reformer. FIG. 3 is a longitudinal sectional view illustrating the vicinity of a reforming unit of the reformer according to the first embodiment. FIG. 3 is a longitudinal sectional view showing, in an enlarged manner, the vicinity of the reforming unit of the reformer according to the first embodiment. FIG. 4 is a longitudinal sectional view illustrating the vicinity of a mixing chamber in an enlarged manner according to the first embodiment. FIG. 3 is an enlarged longitudinal sectional view showing a vicinity of a tip portion of an inner cylinder of a CO shift unit according to the first embodiment. FIG. 4 is a cross-sectional view schematically showing a mixing mode in a mixing chamber of a CO shift unit according to the first embodiment. It is a longitudinal cross-sectional view which concerns on Embodiment 1 and shows the state in which the positioning pin is inserted in the positioning hole. FIG. 4 is a longitudinal sectional view illustrating the vicinity of a first gas passage member at a fixed position according to the first embodiment. FIG. 4 is a longitudinal sectional view illustrating the vicinity of a first gas passage member at a reverse position according to the first embodiment. FIG. 4 is a longitudinal sectional view illustrating the vicinity of a second gas passage member at a fixed position according to the first embodiment. FIG. 4 is a longitudinal sectional view illustrating the vicinity of a second gas passage member at a reverse position according to the first embodiment. FIG. 10 is a longitudinal sectional view illustrating the vicinity of a first gas passage member at a fixed position according to the second embodiment. FIG. 10 is a longitudinal sectional view illustrating the vicinity of a first gas passage member at a fixed position according to the third embodiment. FIG. 10 is a longitudinal sectional view illustrating the vicinity of a first gas passage member at a fixed position according to a fourth embodiment. FIG. 10 is a plan view showing the vicinity of a heat transfer fin according to the fifth embodiment. FIG. 10 is a longitudinal sectional view showing the vicinity of heat transfer fins at a fixed position according to the fifth embodiment. FIG. 10 is a longitudinal sectional view showing the vicinity of heat transfer fins at a reversal position according to the fifth embodiment.

Explanation of symbols

  1 is a reformer, 2 is a reformer, 20a is a catalyst carrier, 20 is a combustion chamber, 21 is an outer passage (gas passage), 22 is an inner passage (gas passage), 25 is a combustion portion (heating source), 41 Is a first heat insulating layer, 42 is an intermediate lid, 42f is a flange portion, 43 is a first combustion passage (gas passage), 44 is a second combustion passage (gas passage), 46 is a heat transfer fin (heat transfer member, insertion member) ), 50 is an evaporation section, 53 is a CO oxidation section, 54 is a heat exchange section, 60 is a shift section, 61 is a reformed gas passage forming member, 61f is a first shift passage, 61s is a second shift passage, and 62 is an inner portion. Cylinder, 63 is an outer cylinder, 64 is a first gas passage plate, 65 is a second gas passage plate, 66 is a closing plate, 70 is an air passage, 71 is a first forming member, 75 is a water vapor passage, 80 is a mixing section, 81 is a mixing chamber, 82 is a direction changing portion, 86 is a main base (base), 91 is a first cylinder, 91c is a bottom, 91 Is a positioning pin (positioning protrusion), 95 is a fifth cylinder (first cylinder member), 96 is a sixth cylinder (second cylinder member), 96a is a protrusion, 96b is a convex surface, 96c is a concave surface, and 96w is The top part, 110 is a first gas passage member (insertion member), 110e is one end part, 110f is the other end part, 120 is a second gas passage member (insertion member), 120e is one end part, 120f is the other end part, 150 is The main gas passage member, 150e is a positioning hole, 300 is a first inclined portion, and 400 is a second inclined portion.

Claims (8)

A gas passage through which the raw material gas, the reformed gas or the combustion gas passes; a first cylinder member which faces the gas passage and defines the gas passage; and an inner portion of the first cylinder member so as to face the gas passage A second cylinder member provided on the circumferential side or the outer circumference side and defining the gas passage, and an insertion disposed between the first cylinder member and the second cylinder member while ensuring gas permeability in the gas passage. Comprising a member,
In a cross section cut along the direction of gravity, the insertion member has one end facing the first cylinder member and the other end facing the second cylinder member in the radial direction of the first cylinder member. And
The first cylindrical member has an inclination from the one end side of the insertion member toward the other end side as it goes downward in the direction of gravity from the one end side of the insertion member. It has a first inclined part that can be engaged on one end side,
The second cylindrical member has an inclination from the other end side of the insertion member toward the one end side as it goes upward in the direction of gravity from the other end side of the insertion member, and the first cylindrical member and A gas processing apparatus for a fuel cell, comprising a second inclined portion that can be engaged with the other end of the insertion member when the second cylindrical member is turned upside down. A gas passage through which the raw material gas, the reformed gas or the combustion gas passes; a first cylinder member which faces the gas passage and defines the gas passage; and an inner portion of the first cylinder member so as to face the gas passage A second cylinder member provided on the circumferential side or the outer circumference side and defining the gas passage, and an insertion disposed between the first cylinder member and the second cylinder member while ensuring gas permeability in the gas passage. Comprising a member,
In the cross section cut along the direction of gravity, in the radial direction of the first cylinder member, the insertion member has one end facing the first cylinder member and the other end facing the second cylinder member. Have
The first cylindrical member has an inclination from the one end portion of the insertion member toward the other end portion as it goes downward in the direction of gravity from the one end portion side of the insertion member, and one end portion side of the insertion member A fuel cell gas processing device having a first inclined portion engageable with the fuel cell. And the catalyst carrier supporting the catalytic is accommodated in the gas passage, wherein said insertion member is a gas passage member having a gas passage of while supporting the catalyst carrier contained in the gas passage The gas treatment apparatus for a fuel cell according to claim 1 or 2 . Before SL insertion member for a fuel cell gas processing device according to claim 1 or 2, characterized in that a heat transfer member to enhance the heat transfer to said first tubular member and / or the second tubular member. Before SL gas passage has no space of the tubular shape, and the insertion member is any one of claims 1 to 4, characterized in that forms a ring-shaped or tubular shape fitted to the gas passage 2. A gas treatment device for a fuel cell according to 1. In cross section cut along a gravity direction, the The said second inclined portion of the first inclined portion and the second tubular member of the first tubular member, the same orientation with respect to the central axis of the first cylindrical member The gas processing apparatus for a fuel cell according to claim 1, which is inclined. Mating inclined portion inclined in the same direction with facing said first inclined portion of the front Symbol first tubular member, any one of the preceding claims, characterized in that it is formed in the second tubular member one The fuel cell gas treatment device according to Item . Before SL gas passage for a fuel cell gas processing device according to any one of claims 1 to 7, characterized in that the raw material gas or reformed gas constitutes a reforming unit to pass.

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