WO2019021829A1 - Fuel cell device - Google Patents

Fuel cell device Download PDF

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Publication number
WO2019021829A1
WO2019021829A1 PCT/JP2018/026242 JP2018026242W WO2019021829A1 WO 2019021829 A1 WO2019021829 A1 WO 2019021829A1 JP 2018026242 W JP2018026242 W JP 2018026242W WO 2019021829 A1 WO2019021829 A1 WO 2019021829A1
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Prior art keywords
exhaust gas
fuel cell
combustion catalyst
cell device
chamber
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PCT/JP2018/026242
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French (fr)
Japanese (ja)
Inventor
鈴木　健吾
英徳 中間
伸起 堀内
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京セラ株式会社
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Priority to JP2019532500A priority Critical patent/JP6878591B2/en
Publication of WO2019021829A1 publication Critical patent/WO2019021829A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
    • H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the present disclosure relates to a fuel cell device.
  • Such a fuel cell device it is known to raise the temperature of the fuel cell by burning a fuel gas not used for power generation of the fuel cell.
  • a fuel gas not used for power generation of the fuel cell Such exhaust gas produced by the operation of the fuel cell system may contain components such as carbon monoxide produced by incomplete combustion of the fuel gas and unused fuel gas.
  • the fuel cell device of the present disclosure A fuel cell module having a cell stack in which a plurality of fuel cells are stacked; An exhaust gas flow path, one end of which is connected to the fuel cell module, into which exhaust gas discharged from the fuel cell module flows; A combustion catalyst disposed in the exhaust gas passage; A heater for heating an exhaust gas disposed in the exhaust gas flow path upstream of the combustion catalyst; And an exhaust gas regulating member disposed between the heater and the combustion catalyst for regulating the flow of the exhaust gas.
  • FIG. 1 is a block diagram showing the configuration of the fuel cell device of the embodiment.
  • FIG. 2 is a perspective view which shows the structure of the cell stack apparatus of the fuel cell apparatus of embodiment.
  • the same members are denoted by the same reference numerals.
  • the fuel cell device 1 includes a fuel cell module 2 configured to store the reformer 10 and the cell stack device 20 in a storage container (not shown).
  • the fuel cell device 1 includes a heat exchanger 31, a condensed water tank 32, a power conditioner 33, a fuel supply device 34, an air supply device 35, a reforming water pump 36, and the like for operating the fuel cell module 2. It is housed in an exterior case (not shown) with accessories. In the outer case, it is not necessary to store all of the accessories. For example, even if a heat storage tank 37 for storing a heat medium such as water heat exchanged with the heat exchanger 31 is disposed outside the outer case Good.
  • the reformer 10 is connected to a raw fuel supply pipe 100 for supplying a raw fuel such as hydrocarbon gas and a water supply pipe 101 for supplying reforming water.
  • the raw fuel supply pipe 100 and the water supply pipe 101 may be connected to the reformer 10 through an integrated pipe line.
  • the raw fuel supply pipe 100 is provided with a fuel supply device 34 for supplying the raw fuel to the reformer 10.
  • the raw fuel and the reforming water undergo a reforming reaction in the heated reformer 10 to produce a reformed gas containing hydrogen.
  • the reformed gas generated by the reformer 10 is supplied to the cell stack device 20 through the reformed gas supply pipe 102.
  • the cell stack device 20 includes a cell stack 23 in which a large number of manifolds 21 and fuel cells 22 are connected. Note that, in FIG. 2, a columnar solid oxide fuel cell is illustrated as the fuel cell 22.
  • the reformed gas supplied from the reformer 10 to the cell stack device 20 is supplied from the manifold 21 into the fuel cell 22.
  • air which is an oxygen-containing gas is introduced from the air supply passage 103 to the outside of the fuel cell 22.
  • An air supply device 35 is connected to the air supply path 103, and the air supply device 35 feeds air to the cell stack device 20.
  • the reformed gas passes through the fuel cell 22, it reacts with the air to generate power.
  • the reformed gas not used for power generation merges with the air not used for power generation at the top of the cell stack 23 and burns to generate high temperature exhaust gas. Further, the reformer 10 is heated by the heat generated by the combustion.
  • the electricity generated by the fuel cell module 2 is sent to the power conditioner 33, and can be used for power consumption, storage of electricity in storage batteries, and the like.
  • the reformer 10 and the cell stack device 20 have high temperatures, they are surrounded by a heat insulating material or the like and stored in a storage container (not shown), and are disposed as a fuel cell module 2 in an outer case together with accessories. .
  • the exhaust gas generated in the fuel cell module 2 is discharged from the cell stack device 20 and then supplied to the heat exchanger 31 through the exhaust gas flow path 104.
  • a circulation line 105 is connected to the heat exchanger 31, and heat exchange is performed between the medium introduced into the circulation line 105 and the exhaust gas. Water or the like can be used as the medium.
  • the exhaust gas is cooled and the medium is heated by the heat of the exhaust gas.
  • the exhaust gas is cooled and the water vapor contained in the exhaust gas is separated into water and gas.
  • the gas is exhausted to the outside through the exhaust passage 107. Water separated by cooling the exhaust gas is sent to the condensed water tank 32 through the condensed water recovery channel 106.
  • the water is purified through ion exchange and the like, and the purified water is introduced into the water supply pipe 101, and is supplied to the reformer 10 as the reforming water by the reforming water pump 36. Supplied. Unwanted water is drained from the drain 108.
  • the medium warmed by the heat exchanger 31 moves to the heat storage tank 37.
  • the medium can store heat while circulating through the circulation line 105.
  • the stored heat can be used for hot water supply and the like.
  • the medium stored in the heat storage tank 37 is water
  • the water of the heat storage tank 37 may be used for hot water supply.
  • a radiator may be provided to reduce the temperature of the medium supplied to the heat exchanger 31.
  • FIG. 3 is a cross-sectional view showing an exhaust gas flow path of the fuel cell device of the embodiment.
  • the exhaust gas flow path 104 connects the fuel cell module 2 and the heat exchanger 31.
  • the exhaust gas flow path 104 is configured by, for example, connecting the filter chamber 40, the heater chamber 50, the combustion catalyst chamber 60, and the connection chamber 70 in this order.
  • the pipeline constituting the exhaust gas flow path 104 consisting of the filter chamber 40, the heater chamber 50, the combustion catalyst chamber 60 and the connection chamber 70 is made of, for example, a stainless steel plate or the like.
  • the fuel cell module 2 is disposed above the exhaust gas flow path 104, and the exhaust port 29 of the fuel cell module 2 is provided on the bottom surface of the fuel cell module 2.
  • the heat exchanger 31 is disposed below the exhaust gas flow path 104.
  • the exhaust gas flow path 104 is provided so that the exhaust gas flows downward from above, and the exhaust gas flows into the filter chamber 40 from the exhaust port 29 of the fuel cell module 2 above, and the heater chamber 50 is burned.
  • the catalyst chamber 60 and the connection chamber 70 sequentially pass and flow out to the heat exchanger 31.
  • the upstream side of the filter chamber 40 communicates with the exhaust port 29 of the fuel cell module 2, and the downstream side communicates with the heater chamber 50.
  • the filter chamber 40 is composed of a tube 41 and is cylindrical.
  • a filter 42 which is a silica removing member and a filter supporting member 43 which is a third limiting member are provided.
  • part of the function of the filter chamber 40 constituting the exhaust gas flow path 104 may be provided in the fuel cell module 2.
  • the filter chamber 40 may be provided inside the fuel cell module 2.
  • the filter 42 and the filter support member 43 which are silica removing members may be provided in the exhaust port 29 of the fuel cell module.
  • FIG. 4 is a perspective view showing a configuration example of a filter chamber of the fuel cell device of the embodiment.
  • the inner wall 41a of the filter chamber 40 is shown by an imaginary line.
  • the filter 42 is cylindrical and has a diameter substantially the same as the inner diameter of the tube 41, and the side surface of the filter 42 is in close contact with the inner wall 41 a of the tube 41.
  • the filter support member 43 provided below the filter 42 prevents the filter 42 from falling into the heater chamber 50.
  • the filter 42 is made of, for example, an Fe—Cr—Al stainless steel alloy coated with aluminum oxide (alumina), and can remove silica particles contained in the exhaust gas. By this, it is possible to reduce that the fuel catalyst is clogged with particles and the performance is degraded. Moreover, it can suppress that the microparticles
  • the filter support member 43 is, for example, an arc-shaped spring made of a ferritic stainless steel plate, and is attached so as to be in biased contact with the inner wall 41 a of the filter chamber 40. For example, even if the filter 42 tries to move downward due to vibration or the like, it is supported by the filter support member 43, so that the filter 42 can be prevented from falling into the heater chamber, and the position of the filter 42 can be stabilized. .
  • FIG. 5 is a perspective view showing another configuration example of the filter chamber of the fuel cell device of the embodiment.
  • the inner wall 41a of the filter chamber 40 is shown by an imaginary line.
  • the filter 42 is similar to that shown in FIG.
  • Filter support members 43a and 43b, which are arc-shaped springs, are provided above and below the filter 42 so as to sandwich the filter 42 from above and below. By this, it is possible to reduce positional deviation due to vibration or the like of the filter 42 at the time of transportation or the like.
  • the heater chamber 50 shown in FIG. 3 has a rectangular parallelepiped shape.
  • the upper portion of the heater chamber 50 is in communication with the filter chamber 40, and the lower portion is in communication with the combustion catalyst chamber 60.
  • a plurality of holes for inserting the heater 52 are provided in the inner wall 51a of the tube 51 constituting the heater chamber 50, and a plurality of rod-like heaters 52 are inserted.
  • the exhaust gas flowing into the heater chamber 50 is heated by the heater 52.
  • the heater 52 is controlled to heat the exhaust gas so that the temperature at which the combustion catalyst functions is exceeded. When the operation of the fuel cell device 1 is continued and the temperature of the exhaust gas is sufficiently high, the heater 52 may not be operated.
  • the heater chamber 50 is not limited to a rectangular parallelepiped, and may be cylindrical. Moreover, the heater 52 may be one.
  • An exhaust gas regulating member 53 is provided downstream of the heater 52.
  • 6 is a plan view showing the configuration of the exhaust gas regulating member of the fuel cell device of the embodiment
  • FIG. 7 is a cross-sectional view showing the AA cross section of the exhaust gas regulating member of the fuel cell device of the embodiment.
  • the exhaust gas regulating member 53 is a rectangular plate whose upper surface 53a is a rectangular shape along the inner wall 51a of the heater chamber 50, and is a perforated plate provided with a large number of holes 53b in the vertical and horizontal directions.
  • the shape of the opening of the exhaust gas regulating member 53 may be a mesh shape in addition to a punching metal shape provided with a large number of openings.
  • edge portions 53c and 53d of the exhaust gas regulating member 53 are bent to form leg portions 53e and 52f.
  • the cross section of the exhaust gas regulating member 53 is U-shaped.
  • the legs 53 e and 53 f are placed on the bottom surface 51 b of the tube 51.
  • the edges 53 c and 53 d of the exhaust gas control member 53 are bent, so that the strength of the exhaust gas control member 53 can be secured.
  • the shape of the exhaust gas regulating member 53 can be appropriately changed in accordance with the shape of the inner wall 51 a of the heater chamber 50.
  • the exhaust gas regulating member 53 increases the flow path resistance to the exhaust gas flowing to the combustion catalyst chamber 60 through the heater chamber 50, and the exhaust gas is retained in the heater chamber 50, and is heated by the heater 52 to increase the temperature. It becomes easy to do.
  • the exhaust gas control member 53 made of metal such as stainless steel plate is heated by the radiant heat of the heater 52, heat is transferred from the exhaust gas control member 53 to the exhaust gas when the exhaust gas passes through the exhaust gas control member 53. Conduction can further heat the exhaust gas.
  • the exhaust gas flowing from the heater chamber 50 is rectified by the exhaust gas control member 53 and sent to the combustion catalyst chamber 60.
  • the opening of the exhaust gas regulating member 53 may be provided so as to be located just under the heater 52. Accordingly, when the heater 52 is operated, the exhaust gas receives the heat of the heater 52 and then flows to the combustion catalyst chamber 60, so that the exhaust gas can be heated more efficiently.
  • the heating condition of the exhaust gas by the heater 52 is improved, the function of the combustion catalyst is enhanced, and the exhaust gas processing efficiency can be improved.
  • the combustion catalyst chamber 60 has a cylindrical shape, the upstream side communicates with the heater chamber 50, and the downstream side communicates with the connection chamber 70.
  • the combustion catalyst chamber 60 is composed of a pipe 61.
  • the shape of the combustion catalyst chamber 60 is cylindrical.
  • FIG. 8 is a perspective view showing a configuration example of a combustion catalyst chamber of the fuel cell device of the embodiment.
  • the phantom line indicates the inner wall 61 a of the tube 61.
  • the combustion catalyst holding member 64 is omitted in FIG.
  • a cylindrical combustion catalyst 62 is disposed in the tubular body 61.
  • the diameter of the combustion catalyst 62 is approximately the same as the inner diameter of the combustion catalyst chamber 60.
  • platinum or palladium is supported on a combustion catalyst in which platinum is supported on a porous alumina support, or on a Fe-Cr-Al stainless steel alloy coated with aluminum oxide (alumina).
  • a combustion catalyst can be used.
  • the combustion catalyst chamber 60 is not limited to a cylindrical shape, and the combustion catalyst 62 can also be appropriately changed according to the shape of the combustion catalyst chamber 60.
  • a combustion catalyst support member 63 which is a first limiting member, is provided above the combustion catalyst 62.
  • the combustion catalyst support member 63 is an arc-shaped spring, and is attached to the inner wall 61 a of the cylindrical combustion catalyst chamber 60 in an urging contact. For example, even if the combustion catalyst 62 attempts to move upward due to vibration or the like, the upper surface of the combustion catalyst 62 abuts on the combustion catalyst support member 63 to limit the displacement of the fuel catalyst. This allows the position of the combustion catalyst 62 to be stabilized.
  • a combustion catalyst holding member 64 which is a second limiting member is provided in contact with the lower surface of the combustion catalyst 62.
  • the outer diameter of the combustion catalyst holding member 64 is substantially equal to the diameter of the inner wall 61a, and the combustion catalyst holding member 64 is a disk-like member and has a circular opening. It consists of a leg 64b extending downward from the portion 64a.
  • the combustion catalyst holding member 64 When the combustion catalyst 62 tries to move downward, the combustion catalyst holding member 64 abuts, and the displacement of the combustion catalyst 62 is limited. Further, the leg portion 64 b of the combustion catalyst holding member 64 is mounted on the bottom surface 61 b of the pipe 61. Therefore, the combustion catalyst 62 does not contact the bottom surface 61b, and a space is secured between the combustion catalyst 62 and the bottom surface 61b.
  • the combustion catalyst 62 when the combustion catalyst 62 is in contact with the bottom surface 61b, the outlet of the exhaust gas passing through the combustion catalyst 62 is narrowed, and the exhaust gas is concentrated at the central portion of the combustion catalyst 62. There is a risk that the efficiency of processing However, by securing the space below the combustion catalyst 62 by the combustion catalyst holding member 64, the exhaust gas can flow through the entire combustion catalyst 62, so that the processing efficiency of the exhaust gas in the combustion catalyst 62 can be enhanced.
  • FIG. 9 is a perspective view showing another configuration example of the combustion catalyst chamber of the fuel cell device of the embodiment.
  • the phantom line indicates the inner wall 61 a of the tube 61.
  • a combustion catalyst support member 63a which is a first restriction member is provided above the combustion catalyst 62.
  • a combustion catalyst support member 63b which is a first limiting member, is provided below the combustion catalyst 62.
  • the combustion catalyst support members 63 a and 63 b are arc-shaped springs, and are attached to the inner wall 61 a of the combustion catalyst chamber 60 in an urging contact.
  • connection chamber 70 is formed of a tube 71.
  • connection chamber 70 is L-shaped, and the upstream side of the connection chamber 70 is connected to the combustion catalyst chamber 60, and the downstream side is connected to the side surface of the heat exchanger 31.
  • the connecting chamber 70 is L-shaped and connected to the side surface of the heat exchanger 31, thereby suppressing the overall height of the exhaust gas flow path 104 and the heat exchanger 31.
  • connection room 70 can be suitably changed according to the place of the exhaust gas inflow mouth of heat exchanger 31.
  • FIG. 10 is a cross-sectional view showing the configuration of the fuel cell module and the exhaust flow path of the fuel cell device of the embodiment.
  • the fuel cell module 2 has four cell stack devices 20 shown in FIG.
  • the cell stack device 20 is installed in the inner wall 26, and the inner wall 25 covers the outside of the inner wall 26. After the air supplied from the air supply path 103 and the reformed gas passing through the fuel cell 22 are reacted to generate electric power, the air and the reformed gas are merged above the fuel cell 22 and burnt. The vessel 10 is heated to become an exhaust gas.
  • the exhaust gas is led from the opening 26 a of the inner wall 26 above the reformer to the exhaust port 29 through the discharge flow path 27 formed in the space between the inner wall 26 and the inner wall 25.
  • the exhaust gas led to the exhaust port 29 flows into the filter chamber 40 of the exhaust gas passage 104 and moves toward the heat exchanger 31.
  • air which is an oxygen-containing gas, flows.
  • FIG. 11 is an exploded perspective view showing the configuration of the fuel cell device of the embodiment.
  • the fuel cell module 2, auxiliary equipment for operating each module, and piping for connecting them are housed in the exterior case 80.
  • the configuration is partially omitted.
  • the fuel cell device 1 divides the inside of the outer case 80 configured by the support 81 and the exterior plate 82 into upper and lower portions by a partition plate 83, and the fuel cell module 2 is accommodated on the upper side thereof. On the lower side, accessories for operating each module are stored. Further, an exhaust gas flow path 104 (not shown) connected to the bottom surface of the fuel cell module 2 is provided to penetrate the partition plate 83, and a heat exchanger 31 (shown in FIG. Not connected).
  • the partition plate 83 is provided with an air circulation port 84 for flowing the air on the lower side of the partition plate 83 to the upper side of the partition plate 83, and the air in the exterior case 80 is formed on the upper portion of the exterior plate 82.
  • An exhaust port 85 for exhausting is provided.
  • the heating condition of the exhaust gas by the heater 52 is improved, the function of the combustion catalyst is enhanced, and the exhaust gas processing efficiency can be improved.
  • this indication was explained in detail, this indication is not limited to the above-mentioned embodiment, In the range which does not deviate from the gist of this indication, various change, improvement, etc. are possible.

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Abstract

A fuel cell device which is provided with: a fuel cell module comprising a cell stack that is obtained by laminating a plurality of fuel cells; an exhaust gas channel which has one end connected to the fuel cell module, and into which the exhaust gas discharged from the fuel cell module flows; a combustion catalyst which is arranged within the exhaust gas channel; and a heater which is arranged in the upstream of the combustion catalyst within the exhaust gas channel, and which heats the exhaust gas. This fuel cell device is also provided with an exhaust gas regulation member, which regulates the flow of the exhaust gas, between the heater and the combustion catalyst.

Description

燃料電池装置Fuel cell device
　本開示は、燃料電池装置に関する。 The present disclosure relates to a fuel cell device.
　近年、次世代エネルギーとして、燃料ガス（水素含有ガス）と空気（酸素含有ガス）とを用いて電力を得ることができる燃料電池セルを収納容器内に収納してなる燃料電池モジュールと、燃料電池モジュールを動作させるための補機とを、筐体である外装ケース内に収納してなる燃料電池装置が種々提案されている。 In recent years, as a next-generation energy, a fuel cell module in which a fuel cell capable of obtaining electric power using fuel gas (hydrogen-containing gas) and air (oxygen-containing gas) is accommodated in a storage container, and fuel cell Various fuel cell devices have been proposed in which an auxiliary machine for operating a module is housed in an outer case which is a housing.
　このような燃料電池装置においては、燃料電池セルの発電で用いられなかった燃料ガスを燃焼させることによって、燃料電池セルの温度を上昇させることが知られている。このような、燃料電池装置の稼動に伴って生じる排ガス中に、燃料ガスが不完全燃焼して生じる一酸化炭素や、未使用の燃料ガスなどの成分が含まれる場合がある。 In such a fuel cell device, it is known to raise the temperature of the fuel cell by burning a fuel gas not used for power generation of the fuel cell. Such exhaust gas produced by the operation of the fuel cell system may contain components such as carbon monoxide produced by incomplete combustion of the fuel gas and unused fuel gas.
　これらの成分を含有する排ガスをそのまま排気すると、安全性や環境等への影響が懸念される。それゆえ、燃料電池装置の稼動に伴って生じる排ガス中に含有される成分を除去するための手段を設けた燃料電池装置が提案されている。たとえば、燃料電池セルから排出された排ガスを浄化するための燃焼触媒を具備する燃料電池装置が提案されている（たとえば、特許文献１を参照。）。 If exhaust gas containing these components is exhausted as it is, there is concern about the influence on safety, environment and the like. Therefore, there has been proposed a fuel cell device provided with means for removing the components contained in the exhaust gas produced as the fuel cell device operates. For example, a fuel cell apparatus having a combustion catalyst for purifying the exhaust gas discharged from the fuel cell has been proposed (see, for example, Patent Document 1).
　また、燃料電池装置が暖まっていない状態においては、排ガスおよび燃焼触媒が低温のため、燃料触媒が十分に機能しないおそれがある。そのため、加熱手段によって、排ガスを加熱する加熱手段を具備する燃料電池装置が提案されている（たとえば、特許文献２を参照。）。 In addition, when the fuel cell device is not warmed up, there is a possibility that the fuel catalyst may not function sufficiently because the exhaust gas and the combustion catalyst are at a low temperature. Therefore, a fuel cell apparatus has been proposed which comprises heating means for heating the exhaust gas by the heating means (see, for example, Patent Document 2).
特開２００６－３２２９１号公報Unexamined-Japanese-Patent No. 2006-32291 特開２０１０－１９２２７２号公報JP, 2010-192272, A
　本開示の燃料電池装置は、
　複数の燃料電池セルを積層したセルスタックを有する燃料電池モジュールと、
　前記燃料電池モジュールに一端が接続され、前記燃料電池モジュールから排出される排ガスが流入する排ガス流路と、
　前記排ガス流路内に配設される燃焼触媒と、
　前記燃焼触媒よりも上流側の前記排ガス流路内に配設される、排ガス加熱用のヒータと、
　前記ヒータと前記燃焼触媒との間に配設される、排ガスの流れを規制する排ガス規制部材と、を備える。 The fuel cell device of the present disclosure
A fuel cell module having a cell stack in which a plurality of fuel cells are stacked;
An exhaust gas flow path, one end of which is connected to the fuel cell module, into which exhaust gas discharged from the fuel cell module flows;
A combustion catalyst disposed in the exhaust gas passage;
A heater for heating an exhaust gas disposed in the exhaust gas flow path upstream of the combustion catalyst;
And an exhaust gas regulating member disposed between the heater and the combustion catalyst for regulating the flow of the exhaust gas.
　本開示の目的、特色、および利点は、下記の詳細な説明と図面とから、より明確になるであろう。
実施形態の燃料電池装置の構成を示すブロック図である。 実施形態の燃料電池装置のセルスタック装置の構成を示す斜視図である。 実施形態の燃料電池装置の排気流路の構成を示す断面図である。 実施形態の燃料電池装置のフィルタ室の構成を示す斜視図である。 実施形態の燃料電池装置のフィルタ室の他の構成を示す斜視図である。 実施形態の燃料電池装置の排ガス規制部材の構成を示す平面図である。 実施形態の燃料電池装置の排ガス規制部材の他の構成を示す断面図である。 実施形態の燃料電池装置の燃焼触媒室の構成を示す斜視図である。 実施形態の燃料電池装置の燃焼触媒室の他の構成を示す斜視図である。 実施形態の燃料電池装置の燃料電池モジュールと排気流路の構成を示す断面図である。 実施形態の燃料電池装置の構成を示す分解斜視図である。 The objects, features and advantages of the present disclosure will become more apparent from the following detailed description and the drawings.
It is a block diagram showing composition of a fuel cell device of an embodiment. It is a perspective view showing composition of a cell stack device of a fuel cell device of an embodiment. It is a sectional view showing the composition of the exhaust channel of the fuel cell device of an embodiment. It is a perspective view showing composition of a filter room of a fuel cell device of an embodiment. It is a perspective view showing other composition of a filter room of a fuel cell device of an embodiment. It is a top view which shows the structure of the exhaust gas control member of the fuel cell apparatus of embodiment. It is sectional drawing which shows the other structure of the exhaust gas control member of the fuel cell apparatus of embodiment. It is a perspective view showing composition of a combustion catalyst room of a fuel cell device of an embodiment. It is a perspective view showing other composition of a combustion catalyst room of a fuel cell device of an embodiment. It is sectional drawing which shows the structure of the fuel cell module of the fuel cell apparatus of embodiment, and an exhaust flow path. It is an exploded perspective view showing the composition of the fuel cell device of an embodiment.
　以下、図面を参考にして、実施形態を詳細に説明する。
　図１は、実施形態の燃料電池装置の構成を示すブロック図である。また、図２は、実施形態の燃料電池装置のセルスタック装置の構成を示す斜視図である。なお、以降の図において同一の部材については同一の番号を付するものとする。 Hereinafter, embodiments will be described in detail with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of the fuel cell device of the embodiment. Moreover, FIG. 2 is a perspective view which shows the structure of the cell stack apparatus of the fuel cell apparatus of embodiment. In the following drawings, the same members are denoted by the same reference numerals.
　燃料電池装置１は、収納容器（図示せず）に改質器１０およびセルスタック装置２０を収納して構成される燃料電池モジュール２を含む。また、燃料電池装置１は、燃料電池モジュール２を作動させるための、熱交換器３１、凝縮水タンク３２、パワーコンディショナ３３、燃料供給装置３４、空気供給装置３５および改質水ポンプ３６等の補機類とともに、外装ケース（図示せず）に納められている。外装ケース内には、補機類の全てが収められる必要はなく、たとえば、熱交換器３１と熱交換をした水などの熱媒体を蓄える蓄熱タンク３７を外装ケースの外部に配設してもよい。 The fuel cell device 1 includes a fuel cell module 2 configured to store the reformer 10 and the cell stack device 20 in a storage container (not shown). In addition, the fuel cell device 1 includes a heat exchanger 31, a condensed water tank 32, a power conditioner 33, a fuel supply device 34, an air supply device 35, a reforming water pump 36, and the like for operating the fuel cell module 2. It is housed in an exterior case (not shown) with accessories. In the outer case, it is not necessary to store all of the accessories. For example, even if a heat storage tank 37 for storing a heat medium such as water heat exchanged with the heat exchanger 31 is disposed outside the outer case Good.
　改質器１０には、炭化水素ガスなどの原燃料を供給する原燃料供給管１００と、改質水を供給する水供給管１０１とが接続されている。原燃料供給管１００と水供給管１０１とが一体となった管路で改質器１０に接続する構成であってもよい。 The reformer 10 is connected to a raw fuel supply pipe 100 for supplying a raw fuel such as hydrocarbon gas and a water supply pipe 101 for supplying reforming water. The raw fuel supply pipe 100 and the water supply pipe 101 may be connected to the reformer 10 through an integrated pipe line.
　原燃料供給管１００には、改質器１０に原燃料を送り込むための燃料供給装置３４が設けられている。原燃料と改質水とは、加熱された改質器１０で改質反応し、水素を含む改質ガスが生成される。改質器１０で生成された改質ガスは、改質ガス供給管１０２を通ってセルスタック装置２０に供給される。 The raw fuel supply pipe 100 is provided with a fuel supply device 34 for supplying the raw fuel to the reformer 10. The raw fuel and the reforming water undergo a reforming reaction in the heated reformer 10 to produce a reformed gas containing hydrogen. The reformed gas generated by the reformer 10 is supplied to the cell stack device 20 through the reformed gas supply pipe 102.
　セルスタック装置２０は、マニホールド２１および燃料電池セル２２を多数接続したセルスタック２３を含む。なお、図２においては、燃料電池セル２２として、柱状で固体酸化物形の燃料電池セルを例示している。 The cell stack device 20 includes a cell stack 23 in which a large number of manifolds 21 and fuel cells 22 are connected. Note that, in FIG. 2, a columnar solid oxide fuel cell is illustrated as the fuel cell 22.
　改質器１０から、セルスタック装置２０に供給された改質ガスはマニホールド２１から燃料電池セル２２内に供給される。セルスタック装置２０において、燃料電池セル２２の外側には空気供給路１０３から酸素含有ガスである空気が導入されている。空気供給路１０３には、空気供給装置３５が接続されており、空気供給装置３５によって、セルスタック装置２０に空気を送り込む。改質ガスが燃料電池セル２２内を通過するときに、この空気と反応して発電が行われる。 The reformed gas supplied from the reformer 10 to the cell stack device 20 is supplied from the manifold 21 into the fuel cell 22. In the cell stack device 20, air which is an oxygen-containing gas is introduced from the air supply passage 103 to the outside of the fuel cell 22. An air supply device 35 is connected to the air supply path 103, and the air supply device 35 feeds air to the cell stack device 20. When the reformed gas passes through the fuel cell 22, it reacts with the air to generate power.
　発電に使用されなかった改質ガスは、セルスタック２３の上部で発電に使用されなかった空気と合流して燃焼し、高温の排ガスが生成される。また、燃焼で発生した熱によって改質器１０を加熱する。燃料電池モジュール２で発電された電気は、パワーコンディショナ３３に送られ、電力消費および蓄電池への蓄電などに用いることができる。 The reformed gas not used for power generation merges with the air not used for power generation at the top of the cell stack 23 and burns to generate high temperature exhaust gas. Further, the reformer 10 is heated by the heat generated by the combustion. The electricity generated by the fuel cell module 2 is sent to the power conditioner 33, and can be used for power consumption, storage of electricity in storage batteries, and the like.
　改質器１０およびセルスタック装置２０は高温となるため、断熱材などで包囲されて収納容器（図示せず）に収められ、燃料電池モジュール２として、補機とともに外装ケース内に配置されている。 Since the reformer 10 and the cell stack device 20 have high temperatures, they are surrounded by a heat insulating material or the like and stored in a storage container (not shown), and are disposed as a fuel cell module 2 in an outer case together with accessories. .
　燃料電池モジュール２内で生じた排ガスは、セルスタック装置２０から排出された後、排ガス流路１０４を通って熱交換器３１に供給される。熱交換器３１には、循環ライン１０５が接続されており、この循環ライン１０５に導入されている媒体と排ガスとで熱交換を行う。媒体としては、水などを用いることができる。 The exhaust gas generated in the fuel cell module 2 is discharged from the cell stack device 20 and then supplied to the heat exchanger 31 through the exhaust gas flow path 104. A circulation line 105 is connected to the heat exchanger 31, and heat exchange is performed between the medium introduced into the circulation line 105 and the exhaust gas. Water or the like can be used as the medium.
　熱交換によって、排ガスは冷却され、媒体は排ガスの熱によって加熱される。排ガスは冷却されて、排ガス中に含まれる水蒸気が、水と気体に分離される。気体は、排気流路１０７を通って外部に排出される。排ガスを冷却することによって分離された水は、凝縮水回収流路１０６を通って凝縮水タンク３２に送られる。 By means of heat exchange, the exhaust gas is cooled and the medium is heated by the heat of the exhaust gas. The exhaust gas is cooled and the water vapor contained in the exhaust gas is separated into water and gas. The gas is exhausted to the outside through the exhaust passage 107. Water separated by cooling the exhaust gas is sent to the condensed water tank 32 through the condensed water recovery channel 106.
　凝縮水タンク３２においては、水はイオン交換などを経て純水化され、純水化された水は、水供給管１０１に導入され、改質水ポンプ３６により改質水として改質器１０に供給される。不要な水はドレイン１０８から排出される。 In the condensed water tank 32, the water is purified through ion exchange and the like, and the purified water is introduced into the water supply pipe 101, and is supplied to the reformer 10 as the reforming water by the reforming water pump 36. Supplied. Unwanted water is drained from the drain 108.
　熱交換器３１で暖められた媒体は、蓄熱タンク３７に移動する。媒体は、循環ライン１０５を循環しながら熱を蓄えることができる。蓄えられた熱は、給湯などに利用することができる。蓄熱タンク３７に蓄えられた媒体が水の場合には、蓄熱タンク３７の水を給湯に利用してもよい。 The medium warmed by the heat exchanger 31 moves to the heat storage tank 37. The medium can store heat while circulating through the circulation line 105. The stored heat can be used for hot water supply and the like. When the medium stored in the heat storage tank 37 is water, the water of the heat storage tank 37 may be used for hot water supply.
　蓄熱タンク３７の媒体の温度が高くなりすぎた場合には、ラジエタを設けて熱交換器３１に供給する媒体の温度を低下させる構成にしてもよい。 If the temperature of the medium in the heat storage tank 37 becomes too high, a radiator may be provided to reduce the temperature of the medium supplied to the heat exchanger 31.
　図３は、実施形態の燃料電池装置の排ガス流路を示す断面図である。排ガス流路１０４は、燃料電池モジュール２と、熱交換器３１とを接続している。 FIG. 3 is a cross-sectional view showing an exhaust gas flow path of the fuel cell device of the embodiment. The exhaust gas flow path 104 connects the fuel cell module 2 and the heat exchanger 31.
　排ガス流路１０４は、たとえば、フィルタ室４０、ヒータ室５０、燃焼触媒室６０および接続室７０をこの順に連結して構成されている。フィルタ室４０、ヒータ室５０、燃焼触媒室６０および接続室７０からなる排ガス流路１０４を構成する管路は、たとえば、ステンレス鋼板などで構成されている The exhaust gas flow path 104 is configured by, for example, connecting the filter chamber 40, the heater chamber 50, the combustion catalyst chamber 60, and the connection chamber 70 in this order. The pipeline constituting the exhaust gas flow path 104 consisting of the filter chamber 40, the heater chamber 50, the combustion catalyst chamber 60 and the connection chamber 70 is made of, for example, a stainless steel plate or the like.
　排ガス流路１０４の上方には、燃料電池モジュール２が配置されており、燃料電池モジュール２の排気口２９は燃料電池モジュール２の底面に設けられている。排ガス流路１０４の下方には熱交換器３１が配置されている。 The fuel cell module 2 is disposed above the exhaust gas flow path 104, and the exhaust port 29 of the fuel cell module 2 is provided on the bottom surface of the fuel cell module 2. The heat exchanger 31 is disposed below the exhaust gas flow path 104.
　本実施形態においては、排ガス流路１０４は上方から下方に排ガスが流れるように設けられており、排ガスは上方の燃料電池モジュール２の排気口２９からフィルタ室４０に流入し、ヒータ室５０、燃焼触媒室６０および接続室７０を順に通過して、熱交換器３１に流出する。 In the present embodiment, the exhaust gas flow path 104 is provided so that the exhaust gas flows downward from above, and the exhaust gas flows into the filter chamber 40 from the exhaust port 29 of the fuel cell module 2 above, and the heater chamber 50 is burned. The catalyst chamber 60 and the connection chamber 70 sequentially pass and flow out to the heat exchanger 31.
　フィルタ室４０は、上流側が燃料電池モジュール２の排気口２９に連通し、下流側がヒータ室５０に連通している。フィルタ室４０は、管体４１で構成され、円筒状である。フィルタ室４０内には、シリカ除去部材であるフィルタ４２と、第３制限部材であるフィルタ支持部材４３とが設けられている。 The upstream side of the filter chamber 40 communicates with the exhaust port 29 of the fuel cell module 2, and the downstream side communicates with the heater chamber 50. The filter chamber 40 is composed of a tube 41 and is cylindrical. In the filter chamber 40, a filter 42 which is a silica removing member and a filter supporting member 43 which is a third limiting member are provided.
　また、排ガス流路１０４を構成するフィルタ室４０の機能の一部を燃料電池モジュール２内に設けてもよい。たとえば、フィルタ室４０は、燃料電池モジュール２の内部に設けることもでき、たとえば、シリカ除去部材であるフィルタ４２およびフィルタ支持部材４３は、燃料電池モジュールの排気口２９内に設けてもよい。 Further, part of the function of the filter chamber 40 constituting the exhaust gas flow path 104 may be provided in the fuel cell module 2. For example, the filter chamber 40 may be provided inside the fuel cell module 2. For example, the filter 42 and the filter support member 43 which are silica removing members may be provided in the exhaust port 29 of the fuel cell module.
　図４は、実施形態の燃料電池装置のフィルタ室の構成例を示す斜視図である。フィルタ室４０の内壁４１ａは仮想線で示している。フィルタ４２は円柱状であり、直径は管体４１の内径とほぼ同じであり、フィルタ４２の側面が管体４１の内壁４１ａに密着して設けられている。フィルタ４２の下方に設けられたフィルタ支持部材４３は、フィルタ４２が、ヒータ室５０に落下することを防いでいる。 FIG. 4 is a perspective view showing a configuration example of a filter chamber of the fuel cell device of the embodiment. The inner wall 41a of the filter chamber 40 is shown by an imaginary line. The filter 42 is cylindrical and has a diameter substantially the same as the inner diameter of the tube 41, and the side surface of the filter 42 is in close contact with the inner wall 41 a of the tube 41. The filter support member 43 provided below the filter 42 prevents the filter 42 from falling into the heater chamber 50.
　フィルタ４２は、たとえば、酸化アルミニウム（アルミナ）がコーティングされたＦｅ－Ｃｒ－Ａｌ系ステンレス合金で構成されており、排ガスに含まれるシリカ粒子を取り除くことが可能である。このことによって、燃料触媒に粒子が詰まって性能が低下することを軽減できる。また、排ガスとともにシリカの微粒子が大気中に放出されることを抑制することができる。 The filter 42 is made of, for example, an Fe—Cr—Al stainless steel alloy coated with aluminum oxide (alumina), and can remove silica particles contained in the exhaust gas. By this, it is possible to reduce that the fuel catalyst is clogged with particles and the performance is degraded. Moreover, it can suppress that the microparticles | fine-particles of a silica are discharge | released to air | atmosphere with waste gas.
　フィルタ支持部材４３は、たとえば、フェライト系ステンレス鋼板からなる円弧状のばねであり、フィルタ室４０の内壁４１ａに付勢接触するように取り付けられている。たとえば、振動などによって、フィルタ４２が下方に移動しようとしても、フィルタ支持部材４３によって支持されるので、フィルタ４２がヒータ室に落ちることを防ぐことができ、フィルタ４２の位置を安定させることができる。 The filter support member 43 is, for example, an arc-shaped spring made of a ferritic stainless steel plate, and is attached so as to be in biased contact with the inner wall 41 a of the filter chamber 40. For example, even if the filter 42 tries to move downward due to vibration or the like, it is supported by the filter support member 43, so that the filter 42 can be prevented from falling into the heater chamber, and the position of the filter 42 can be stabilized. .
　図５は、実施形態の燃料電池装置のフィルタ室の他の構成例を示す斜視図である。フィルタ室４０の内壁４１ａは仮想線で示している。フィルタ４２は、図３に示すものと同様である。フィルタ４２の上下に円弧状のばねであるフィルタ支持部材４３ａ、４３ｂが、フィルタ４２を上下から挟むように設けられている。このことによって、輸送時などにおいて、フィルタ４２の振動などによる位置ずれを軽減することができる。 FIG. 5 is a perspective view showing another configuration example of the filter chamber of the fuel cell device of the embodiment. The inner wall 41a of the filter chamber 40 is shown by an imaginary line. The filter 42 is similar to that shown in FIG. Filter support members 43a and 43b, which are arc-shaped springs, are provided above and below the filter 42 so as to sandwich the filter 42 from above and below. By this, it is possible to reduce positional deviation due to vibration or the like of the filter 42 at the time of transportation or the like.
　つぎに、図３に示すヒータ室５０は、直方体状である。ヒータ室５０は、上方がフィルタ室４０に連通しており、下方が燃焼触媒室６０に連通している。ヒータ室５０を構成する管体５１の内壁５１ａにはヒータ５２を挿入するための穴が複数設けられており、棒状のヒータ５２が複数挿入されている。 Next, the heater chamber 50 shown in FIG. 3 has a rectangular parallelepiped shape. The upper portion of the heater chamber 50 is in communication with the filter chamber 40, and the lower portion is in communication with the combustion catalyst chamber 60. A plurality of holes for inserting the heater 52 are provided in the inner wall 51a of the tube 51 constituting the heater chamber 50, and a plurality of rod-like heaters 52 are inserted.
　ヒータ室５０に流入した排ガスはヒータ５２によって加熱される。ヒータ５２を制御して、燃焼触媒が機能する温度を超えるように排ガスを加熱する。燃料電池装置１の運転が継続されて、排ガスの温度が十分高くなっている場合には、ヒータ５２は、動作させなくてもよい。なおヒータ室５０は直方体状に限られるものではなく、円柱状であってもよい。また、ヒータ５２は１つであってもよい。 The exhaust gas flowing into the heater chamber 50 is heated by the heater 52. The heater 52 is controlled to heat the exhaust gas so that the temperature at which the combustion catalyst functions is exceeded. When the operation of the fuel cell device 1 is continued and the temperature of the exhaust gas is sufficiently high, the heater 52 may not be operated. The heater chamber 50 is not limited to a rectangular parallelepiped, and may be cylindrical. Moreover, the heater 52 may be one.
　ヒータ５２の下流側に、排ガス規制部材５３が設けられている。図６は、実施形態の燃料電池装置の排ガス規制部材の構成を示す平面図であり、図７は、施形態の燃料電池装置の排ガス規制部材のＡ－Ａ断面を示す断面図である。 An exhaust gas regulating member 53 is provided downstream of the heater 52. 6 is a plan view showing the configuration of the exhaust gas regulating member of the fuel cell device of the embodiment, and FIG. 7 is a cross-sectional view showing the AA cross section of the exhaust gas regulating member of the fuel cell device of the embodiment.
　排ガス規制部材５３は、上面５３ａがヒータ室５０の内壁５１ａに沿った矩形状であり、孔５３ｂが縦横に多数設けられている穴あき板である。排ガス規制部材５３の開口の形状としては、開口が多数設けられたパンチングメタル状のほか、メッシュ状であってもよい。 The exhaust gas regulating member 53 is a rectangular plate whose upper surface 53a is a rectangular shape along the inner wall 51a of the heater chamber 50, and is a perforated plate provided with a large number of holes 53b in the vertical and horizontal directions. The shape of the opening of the exhaust gas regulating member 53 may be a mesh shape in addition to a punching metal shape provided with a large number of openings.
　また、排ガス規制部材５３の縁部５３ｃ、５３ｄは折曲げられて脚部５３ｅ，５２ｆが形成されている。排ガス規制部材５３の断面は、コの字状である。また、脚部５３ｅ，５３ｆは、管体５１の底面５１ｂ上に載置されている。排ガス規制部材５３は、縁部５３ｃ，５３ｄが折曲げられているので、排ガス規制部材５３の強度を確保することができる。なお、排ガス規制部材５３の形状は、ヒータ室５０の内壁５１ａの形状に合わせて適宜変更することができる。 Further, the edge portions 53c and 53d of the exhaust gas regulating member 53 are bent to form leg portions 53e and 52f. The cross section of the exhaust gas regulating member 53 is U-shaped. The legs 53 e and 53 f are placed on the bottom surface 51 b of the tube 51. The edges 53 c and 53 d of the exhaust gas control member 53 are bent, so that the strength of the exhaust gas control member 53 can be secured. The shape of the exhaust gas regulating member 53 can be appropriately changed in accordance with the shape of the inner wall 51 a of the heater chamber 50.
　排ガス規制部材５３によって、ヒータ室５０を通って燃焼触媒室６０へ流れる排ガスに対する流路抵抗が増加し、排ガスがヒータ室５０内に滞留するようになって、ヒータ５２で加熱され、温度が上昇しやすくなる。 The exhaust gas regulating member 53 increases the flow path resistance to the exhaust gas flowing to the combustion catalyst chamber 60 through the heater chamber 50, and the exhaust gas is retained in the heater chamber 50, and is heated by the heater 52 to increase the temperature. It becomes easy to do.
　また、ステンレス鋼板などの金属で構成されている排ガス規制部材５３は、ヒータ５２の輻射熱で加熱されているので、排ガスが排ガス規制部材５３を通過することによって、排ガス規制部材５３から排ガスに熱が伝導して排ガスをさらに加熱することができる。排ガス規制部材５３によって、ヒータ室５０から流れる排ガスは整流されて燃焼触媒室６０に送られる。 Further, since the exhaust gas control member 53 made of metal such as stainless steel plate is heated by the radiant heat of the heater 52, heat is transferred from the exhaust gas control member 53 to the exhaust gas when the exhaust gas passes through the exhaust gas control member 53. Conduction can further heat the exhaust gas. The exhaust gas flowing from the heater chamber 50 is rectified by the exhaust gas control member 53 and sent to the combustion catalyst chamber 60.
　特に、ヒータ５２にて排ガスをより効率よく加熱するにあたっては、排ガス規制部材５３の開口を、ヒータ５２の直下にのみ位置するように設けることがよい。それにより、ヒータ５２を稼働させたときに、排ガスがヒータ５２の熱を受けた後に、燃焼触媒室６０に流れることとなり、より効率よく排ガスを加熱することができる。 In particular, in order to heat the exhaust gas more efficiently by the heater 52, the opening of the exhaust gas regulating member 53 may be provided so as to be located just under the heater 52. Accordingly, when the heater 52 is operated, the exhaust gas receives the heat of the heater 52 and then flows to the combustion catalyst chamber 60, so that the exhaust gas can be heated more efficiently.
　以上、詳述したように、本実施形態の燃料電池装置１によれば、ヒータ５２による排ガスの加熱状況が改善され、燃焼触媒の機能が高まって、排ガスの処理効率を向上させることができる。 As described above, according to the fuel cell apparatus 1 of the present embodiment, the heating condition of the exhaust gas by the heater 52 is improved, the function of the combustion catalyst is enhanced, and the exhaust gas processing efficiency can be improved.
　つぎに、図３において、燃焼触媒室６０は円筒状であり、上流側がヒータ室５０と連通し、下流側が接続室７０と連通している。燃焼触媒室６０は、管体６１で構成されている。燃焼触媒室６０の形状は円柱状である。 Next, in FIG. 3, the combustion catalyst chamber 60 has a cylindrical shape, the upstream side communicates with the heater chamber 50, and the downstream side communicates with the connection chamber 70. The combustion catalyst chamber 60 is composed of a pipe 61. The shape of the combustion catalyst chamber 60 is cylindrical.
　図８は、実施形態の燃料電池装置の燃焼触媒室の構成例を示す斜視図である。仮想線は、管体６１の内壁６１ａを示す。なお、図８において、燃焼触媒保持部材６４は省略されている。 FIG. 8 is a perspective view showing a configuration example of a combustion catalyst chamber of the fuel cell device of the embodiment. The phantom line indicates the inner wall 61 a of the tube 61. The combustion catalyst holding member 64 is omitted in FIG.
　管体６１内に、円柱状の燃焼触媒６２が配設されている。燃焼触媒６２の直径は、燃焼触媒室６０の内径とほぼ同じである。燃焼触媒６２としては、たとえば、多孔質のアルミナ担持体に白金を担持させた燃焼触媒や、酸化アルミニウム（アルミナ）がコーティングされたＦｅ－Ｃｒ－Ａｌ系ステンレス合金に白金、パラジウムを坦持させた燃焼触媒を用いることができる。なお、燃焼触媒室６０は円筒状に限られるものではなく、また燃焼触媒６２も燃焼触媒室６０の形状に合わせて適宜変更可能である。 A cylindrical combustion catalyst 62 is disposed in the tubular body 61. The diameter of the combustion catalyst 62 is approximately the same as the inner diameter of the combustion catalyst chamber 60. As the combustion catalyst 62, for example, platinum or palladium is supported on a combustion catalyst in which platinum is supported on a porous alumina support, or on a Fe-Cr-Al stainless steel alloy coated with aluminum oxide (alumina). A combustion catalyst can be used. The combustion catalyst chamber 60 is not limited to a cylindrical shape, and the combustion catalyst 62 can also be appropriately changed according to the shape of the combustion catalyst chamber 60.
　燃焼触媒６２の上方に、第１制限部材である燃焼触媒支持部材６３が設けられている。燃焼触媒支持部材６３は、円弧状のばねであり、円筒状の燃焼触媒室６０の内壁６１ａに付勢接触して取付けられている。たとえば、振動などによって、燃焼触媒６２が上方に移動しようとしても、燃焼触媒６２の上面が、燃焼触媒支持部材６３に当接して、燃料触媒の変位を制限する。このことによって、燃焼触媒６２の位置を安定させることができる。 Above the combustion catalyst 62, a combustion catalyst support member 63, which is a first limiting member, is provided. The combustion catalyst support member 63 is an arc-shaped spring, and is attached to the inner wall 61 a of the cylindrical combustion catalyst chamber 60 in an urging contact. For example, even if the combustion catalyst 62 attempts to move upward due to vibration or the like, the upper surface of the combustion catalyst 62 abuts on the combustion catalyst support member 63 to limit the displacement of the fuel catalyst. This allows the position of the combustion catalyst 62 to be stabilized.
　燃焼触媒６２の下面に当接して、第２制限部材である燃焼触媒保持部材６４が設けられている。燃焼触媒保持部材６４の外径は、内壁６１ａの直径とほぼ等しく、燃焼触媒保持部材６４は、円盤状の部材であって、円形の開口を有しており、円環部６４ａと、円環部６４ａから下方に伸びる脚部６４ｂとからなっている。 A combustion catalyst holding member 64 which is a second limiting member is provided in contact with the lower surface of the combustion catalyst 62. The outer diameter of the combustion catalyst holding member 64 is substantially equal to the diameter of the inner wall 61a, and the combustion catalyst holding member 64 is a disk-like member and has a circular opening. It consists of a leg 64b extending downward from the portion 64a.
　燃焼触媒６２が下方に移動しようとすると、燃焼触媒保持部材６４が当接して、燃焼触媒６２の変位を制限する。また、燃焼触媒保持部材６４の脚部６４ｂは、管体６１の底面６１ｂ上に載置されている。このため、燃焼触媒６２は、底面６１ｂに接触せず、燃焼触媒６２と、底面６１ｂとの間に空間が確保される。 When the combustion catalyst 62 tries to move downward, the combustion catalyst holding member 64 abuts, and the displacement of the combustion catalyst 62 is limited. Further, the leg portion 64 b of the combustion catalyst holding member 64 is mounted on the bottom surface 61 b of the pipe 61. Therefore, the combustion catalyst 62 does not contact the bottom surface 61b, and a space is secured between the combustion catalyst 62 and the bottom surface 61b.
　たとえば、燃焼触媒６２が底面６１ｂと接触していると、燃焼触媒６２を通過する排ガスの出口が狭くなり、燃焼触媒６２の中央部に排ガスが集中するので、流路抵抗が大きくなったり、排ガスを処理する効率が悪くなったりするおそれがある。しかしながら、燃焼触媒保持部材６４によって燃焼触媒６２下方の空間を確保することで、燃焼触媒６２全体に排ガスを流すことができるので、燃焼触媒６２おける排ガスの処理効率を高めることができる。 For example, when the combustion catalyst 62 is in contact with the bottom surface 61b, the outlet of the exhaust gas passing through the combustion catalyst 62 is narrowed, and the exhaust gas is concentrated at the central portion of the combustion catalyst 62. There is a risk that the efficiency of processing However, by securing the space below the combustion catalyst 62 by the combustion catalyst holding member 64, the exhaust gas can flow through the entire combustion catalyst 62, so that the processing efficiency of the exhaust gas in the combustion catalyst 62 can be enhanced.
　図９は、実施形態の燃料電池装置の燃焼触媒室の他の構成例を示す斜視図である。仮想線は、管体６１の内壁６１ａを示す。 FIG. 9 is a perspective view showing another configuration example of the combustion catalyst chamber of the fuel cell device of the embodiment. The phantom line indicates the inner wall 61 a of the tube 61.
　燃焼触媒６２の上方に、第１制限部材である燃焼触媒支持部材６３ａが設けられている。また、前述の燃焼触媒保持部材６４に代えて、燃焼触媒６２の下方に、第１制限部材である燃焼触媒支持部材６３ｂが設けられている。燃焼触媒支持部材６３ａ，６３ｂは、円弧状のばねであり、燃焼触媒室６０の内壁６１ａに付勢接触して取付けられている。 Above the combustion catalyst 62, a combustion catalyst support member 63a which is a first restriction member is provided. Further, instead of the above-described combustion catalyst holding member 64, a combustion catalyst support member 63b, which is a first limiting member, is provided below the combustion catalyst 62. The combustion catalyst support members 63 a and 63 b are arc-shaped springs, and are attached to the inner wall 61 a of the combustion catalyst chamber 60 in an urging contact.
　このように、燃焼触媒６２の上下を燃焼触媒支持部材６３ａ，６３ｂで挟むことによって、燃焼触媒６２の位置ずれを抑制することができる。また、燃焼触媒６２は、底面６１ｂに接触せず、燃焼触媒６２と、底面６１ｂとの間に空間が確保されているので、燃焼触媒６２全体に排ガスを流すことができるので、燃焼触媒６２おける排ガスの処理効率を高めることができる。 By thus sandwiching the upper and lower sides of the combustion catalyst 62 with the combustion catalyst support members 63a and 63b, positional deviation of the combustion catalyst 62 can be suppressed. Further, since the combustion catalyst 62 does not contact the bottom surface 61 b and a space is secured between the combustion catalyst 62 and the bottom surface 61 b, the exhaust gas can flow through the entire combustion catalyst 62. The exhaust gas treatment efficiency can be enhanced.
　つぎに、燃焼触媒室６０の下流側には開口６０ａが設けられており、開口６０ａに接続室７０が接続されている。接続室７０は管体７１で形成されている。 Next, an opening 60a is provided on the downstream side of the combustion catalyst chamber 60, and a connection chamber 70 is connected to the opening 60a. The connection chamber 70 is formed of a tube 71.
　接続室７０はＬ字状であり、接続室７０の上流側は、燃焼触媒室６０に接続され、下流側は、熱交換器３１の側面に接続している。このように接続室７０をＬ字状にして熱交換器３１の側面に接続する構成とすることによって、排ガス流路１０４および熱交換器３１を含む全体の高さを抑制する。 The connection chamber 70 is L-shaped, and the upstream side of the connection chamber 70 is connected to the combustion catalyst chamber 60, and the downstream side is connected to the side surface of the heat exchanger 31. As described above, the connecting chamber 70 is L-shaped and connected to the side surface of the heat exchanger 31, thereby suppressing the overall height of the exhaust gas flow path 104 and the heat exchanger 31.
　また、このことによって、燃料電池装置１の高さを抑え、小型化を実現することができる。なお、接続室７０は、熱交換器３１の排ガス流入口の場所に合わせて適宜変更することができる。 Moreover, the height of the fuel cell apparatus 1 can be restrained by this, and size reduction can be implement | achieved. Connection room 70 can be suitably changed according to the place of the exhaust gas inflow mouth of heat exchanger 31.
　図１０は、実施形態の燃料電池装置の燃料電池モジュールと排気流路の構成を示す断面図である。燃料電池モジュール２は、図２に示すセルスタック装置２０が４つ横並びに収納容器３０に納められている。 FIG. 10 is a cross-sectional view showing the configuration of the fuel cell module and the exhaust flow path of the fuel cell device of the embodiment. The fuel cell module 2 has four cell stack devices 20 shown in FIG.
　セルスタック装置２０は内壁２６内に設置され、内壁２６の外側を中壁２５が覆っている。空気供給路１０３から供給された空気と燃料電池セル２２内を通る改質ガスを反応させて発電を行った後、空気と改質ガスは燃料電池セル２２上方で合流して燃焼し、改質器１０を加熱し、排ガスになる。 The cell stack device 20 is installed in the inner wall 26, and the inner wall 25 covers the outside of the inner wall 26. After the air supplied from the air supply path 103 and the reformed gas passing through the fuel cell 22 are reacted to generate electric power, the air and the reformed gas are merged above the fuel cell 22 and burnt. The vessel 10 is heated to become an exhaust gas.
　排ガスは、改質器上方の内壁２６の開口２６ａから内壁２６と中壁２５の間の空間に形成された排出流路２７を通って排気口２９へ導かれる。排気口２９に導かれた排ガスは、排ガス流路１０４のフィルタ室４０に流入して、熱交換器３１へ向かって移動していく。なお、外壁２４と、中壁２５との間の空間２８には、酸素含有ガスである空気が流通している。 The exhaust gas is led from the opening 26 a of the inner wall 26 above the reformer to the exhaust port 29 through the discharge flow path 27 formed in the space between the inner wall 26 and the inner wall 25. The exhaust gas led to the exhaust port 29 flows into the filter chamber 40 of the exhaust gas passage 104 and moves toward the heat exchanger 31. In the space 28 between the outer wall 24 and the middle wall 25, air, which is an oxygen-containing gas, flows.
　図１１は、実施形態の燃料電池装置の構成を示す分解斜視図である。外装ケース８０内に燃料電池モジュール２、各モジュールを動作させるための補機およびそれらを接続する配管を収納してなる。なお、図１１においては一部構成を省略して示している。 FIG. 11 is an exploded perspective view showing the configuration of the fuel cell device of the embodiment. The fuel cell module 2, auxiliary equipment for operating each module, and piping for connecting them are housed in the exterior case 80. In FIG. 11, the configuration is partially omitted.
　燃料電池装置１は、支柱８１と外装板８２とから構成される外装ケース８０の内部を仕切板８３によって上下に区画し、その上方側に燃料電池モジュール２を収納している。下方側には、各モジュールを動作させるための補機類が収納されている。また、燃料電池モジュール２の底面に接続された排ガス流路１０４（図示せず）は、仕切板８３を貫通して設けられ、仕切板８３の下方側に設置された熱交換器３１（図示せず）に接続されている。 The fuel cell device 1 divides the inside of the outer case 80 configured by the support 81 and the exterior plate 82 into upper and lower portions by a partition plate 83, and the fuel cell module 2 is accommodated on the upper side thereof. On the lower side, accessories for operating each module are stored. Further, an exhaust gas flow path 104 (not shown) connected to the bottom surface of the fuel cell module 2 is provided to penetrate the partition plate 83, and a heat exchanger 31 (shown in FIG. Not connected).
　仕切板８３には、仕切板８３の下方側の空気を仕切板８３の上方側に流すための空気流通口８４が設けられており、外装板８２の上部には、外装ケース８０内の空気を排気するための排気口８５が設けられている。 The partition plate 83 is provided with an air circulation port 84 for flowing the air on the lower side of the partition plate 83 to the upper side of the partition plate 83, and the air in the exterior case 80 is formed on the upper portion of the exterior plate 82. An exhaust port 85 for exhausting is provided.
　上記構成の燃料電池装置１によれば、先にも述べたように、ヒータ５２による排ガスの加熱状況が改善され、燃焼触媒の機能が高まって、排ガスの処理効率を向上させることができる。 According to the fuel cell device 1 configured as described above, as described above, the heating condition of the exhaust gas by the heater 52 is improved, the function of the combustion catalyst is enhanced, and the exhaust gas processing efficiency can be improved.
　以上、本開示について詳細に説明したが、本開示は上述の実施の形態に限定されるものではなく、本開示の要旨を逸脱しない範囲内において種々の変更、改良等が可能である。 As mentioned above, although this indication was explained in detail, this indication is not limited to the above-mentioned embodiment, In the range which does not deviate from the gist of this indication, various change, improvement, etc. are possible.
　さらに、本開示は、その精神または主要な特徴から逸脱することなく、他のいろいろな形態で実施できる。したがって、前述の実施形態はあらゆる点で単なる例示に過ぎず、本開示の範囲は請求の範囲に示すものであって、明細書本文には何ら拘束されない。さらに、請求の範囲に属する変形や変更は全て本開示の範囲内のものである。 Furthermore, the present disclosure can be implemented in other various forms without departing from the spirit or main features thereof. Accordingly, the above-described embodiments are merely illustrative in every respect, and the scope of the present disclosure is as set forth in the claims, and is not limited in any way by the description. Furthermore, all variations and modifications that fall within the scope of the claims fall within the scope of the present disclosure.
　１　燃料電池装置
　２　燃料電池モジュール
　５２　ヒータ
　５３　排ガス規制部材
　６２　燃焼触媒
　１０４　排ガス流路 Reference Signs List 1 fuel cell device 2 fuel cell module 52 heater 53 exhaust gas control member 62 combustion catalyst 104 exhaust gas flow path

Claims (9)

  1. 　複数の燃料電池セルを積層したセルスタックを有する燃料電池モジュールと、
    　前記燃料電池モジュールに一端が接続され、前記燃料電池モジュールから排出される排ガスが流入する排ガス流路と、
    　前記排ガス流路内に配設される燃焼触媒と、
    　前記燃焼触媒よりも上流側の前記排ガス流路内に配設される、排ガス加熱用のヒータと、
    　前記ヒータと前記燃焼触媒との間に配設される、排ガスの流れを規制する排ガス規制部材と、を備える燃料電池装置。     A fuel cell module having a cell stack in which a plurality of fuel cells are stacked;
    An exhaust gas flow path, one end of which is connected to the fuel cell module, into which exhaust gas discharged from the fuel cell module flows;
    A combustion catalyst disposed in the exhaust gas passage;
    A heater for heating an exhaust gas disposed in the exhaust gas flow path upstream of the combustion catalyst;
    And an exhaust gas regulating member disposed between the heater and the combustion catalyst for regulating the flow of exhaust gas.
  2. 　前記排ガス規制部材は、複数の開口が設けられた穴あき板である、請求項１に記載の燃料電池装置。 The fuel cell device according to claim 1, wherein the exhaust gas regulating member is a perforated plate provided with a plurality of openings.
  3. 　前記穴あき板は、縁部が折曲げられている、請求項２に記載の燃料電池装置。 The fuel cell device according to claim 2, wherein the perforated plate is bent at an edge.
  4. 　前記燃焼触媒に近接して前記排ガス流路内に設けられ、前記燃焼触媒の変位を制限する第１制限部材を備える請求項１～３のいずれか１つに記載の燃料電池装置。 The fuel cell device according to any one of claims 1 to 3, further comprising a first restricting member provided in the exhaust gas flow path in close proximity to the combustion catalyst to restrict displacement of the combustion catalyst.
  5. 　前記排ガス流路は、円筒状の燃焼触媒室を備え、
    　前記燃焼触媒室内に、前記燃焼触媒と、前記第１制限部材とが配置され、
    　前記燃焼触媒は、円柱状であり、
    　前記第１制限部材は、前記燃焼触媒室内壁に付勢接触している円弧状ばねである、請求項４に記載の燃料電池装置。     The exhaust gas flow path includes a cylindrical combustion catalyst chamber,
    The combustion catalyst and the first limiting member are disposed in the combustion catalyst chamber,
    The combustion catalyst is cylindrical,
    5. The fuel cell device according to claim 4, wherein the first limiting member is an arc-shaped spring in urging contact with the combustion catalyst chamber inner wall.
  6. 　前記燃焼触媒に近接して前記排ガス流路内に設けられ、前記燃焼触媒の変位を制限する円盤状の第２制限部材を備える請求項５に記載の燃料電池装置。 The fuel cell device according to claim 5, further comprising: a disk-like second limiting member provided in the exhaust gas flow path in proximity to the combustion catalyst and limiting displacement of the combustion catalyst.
  7. 　前記ヒータの上流側の前記排ガス流路内または前記燃料電池モジュールの排気口内にシリカ除去部材を備える請求項１～６のいずれか１つに記載の燃料電池装置。 The fuel cell device according to any one of claims 1 to 6, further comprising a silica removing member in the exhaust gas flow path upstream of the heater or in the exhaust port of the fuel cell module.
  8. 　前記シリカ除去部材に近接して前記排ガス流路内または前記燃料電池モジュールの排気口内に設けられ、前記シリカ除去部材の変位を制限する第３制限部材を備える請求項７に記載の燃料電池装置。 8. The fuel cell device according to claim 7, further comprising: a third restricting member provided in the exhaust gas flow path or in the exhaust port of the fuel cell module in proximity to the silica removing member and limiting displacement of the silica removing member.
  9. 　前記ヒータの上流側に円筒状のフィルタ室を備え、
    　前記フィルタ室内に、前記シリカ除去部材と、前記シリカ除去部材の下方配置された前記第３制限部材とを備え、
    　前記シリカ除去部材は円柱状であり、
    　前記第３制限部材は、前記フィルタ室内壁に付勢接触している円弧状ばねである、請求項８に記載の燃料電池装置。     A cylindrical filter chamber is provided upstream of the heater,
    The filter chamber includes the silica removing member and the third limiting member disposed below the silica removing member;
    The silica removing member is cylindrical,
    9. The fuel cell device according to claim 8, wherein the third limiting member is an arc-shaped spring in biasing contact with the wall of the filter chamber.
PCT/JP2018/026242 2017-07-27 2018-07-11 Fuel cell device WO2019021829A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012142112A (en) * 2010-12-28 2012-07-26 Kyocera Corp Fuel cell device
WO2014017447A1 (en) * 2012-07-25 2014-01-30 昭和電工株式会社 Membrane electrode assembly and fuel cell provided with same
JP2014193446A (en) * 2013-03-29 2014-10-09 Tanaka Kikinzoku Kogyo Kk Exhaust gas treatment catalyst for purification of exhaust gas containing silicon compound
JP2014203779A (en) * 2013-04-09 2014-10-27 Ｊｘ日鉱日石エネルギー株式会社 Gas treatment equipment and fuel cell system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012142112A (en) * 2010-12-28 2012-07-26 Kyocera Corp Fuel cell device
WO2014017447A1 (en) * 2012-07-25 2014-01-30 昭和電工株式会社 Membrane electrode assembly and fuel cell provided with same
JP2014193446A (en) * 2013-03-29 2014-10-09 Tanaka Kikinzoku Kogyo Kk Exhaust gas treatment catalyst for purification of exhaust gas containing silicon compound
JP2014203779A (en) * 2013-04-09 2014-10-27 Ｊｘ日鉱日石エネルギー株式会社 Gas treatment equipment and fuel cell system

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