JP2948285B2 - Cylindrical solid electrolyte fuel cell module - Google Patents
Cylindrical solid electrolyte fuel cell moduleInfo
- Publication number
- JP2948285B2 JP2948285B2 JP2218082A JP21808290A JP2948285B2 JP 2948285 B2 JP2948285 B2 JP 2948285B2 JP 2218082 A JP2218082 A JP 2218082A JP 21808290 A JP21808290 A JP 21808290A JP 2948285 B2 JP2948285 B2 JP 2948285B2
- Authority
- JP
- Japan
- Prior art keywords
- tube sheet
- module
- fuel cell
- reaction chamber
- solid electrolyte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
- H01M8/243—Grouping of unit cells of tubular or cylindrical configuration
-
- 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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、円筒型固体電解質燃料電池（SOFC）モジュ
ールに関する ［従来の技術］ 従来の円筒型SOFCのモジュールにおいては、未反応燃
料をモジュール内で燃焼させるシールレス方式（第２図
図示）、又は管板により燃料と空気を混合しないシール
方式（第３図図示）がある。なお、第２図，第３図にお
いて、１は円筒型SOFC、２は反応室、３は支持板、４は
排出室、５はシール管板である。Description: TECHNICAL FIELD The present invention relates to a cylindrical solid oxide fuel cell (SOFC) module. [Prior Art] In a conventional cylindrical SOFC module, unreacted fuel is contained in the module. There is a sealless system (shown in FIG. 2) in which fuel is burned, or a seal system (see FIG. 3) in which fuel and air are not mixed by a tube sheet. 2 and 3, 1 is a cylindrical SOFC, 2 is a reaction chamber, 3 is a support plate, 4 is a discharge chamber, and 5 is a seal tube sheet.
［発明が解決しようとする課題］ 従来のシールレス型モジュール構造においては、未利
用の燃料及び空気をモジュール内の燃焼室で直ちに燃焼
させるため、排出室４内の温度が上昇する。従って、構
成材料が制約されるとともに、信頼性、耐久性の点で問
題がある。[Problem to be Solved by the Invention] In the conventional sealless type module structure, the temperature in the discharge chamber 4 increases because unused fuel and air are immediately burned in the combustion chamber in the module. Accordingly, the constituent materials are restricted, and there are problems in reliability and durability.
一方、シール型モジュール構造においては、燃焼によ
る温度の上昇はないが、作動温度が900〜1000℃と高
い。また、シール性を確保するため円筒型SOFC1の全荷
重をシール管板５で受けるので、クリープ強度の点で問
題がある。On the other hand, in the sealed module structure, although the temperature does not rise due to combustion, the operating temperature is as high as 900 to 1000 ° C. Further, since the entire load of the cylindrical SOFC 1 is received by the seal tube sheet 5 in order to secure the sealing property, there is a problem in creep strength.
本発明は上記事情に鑑みてなされたもので、シール型
モジュール構造において、シール管板のメタル温度を低
下させ、かつ曲げ強度，クリープ強度を確保し、更に使
用するシール管板の材質を低級化しえる円筒型SOFCモジ
ュールを提供することを目的とする。The present invention has been made in view of the above circumstances, and in a seal type module structure, a metal temperature of a seal tube sheet is reduced, bending strength and creep strength are ensured, and a material of a seal tube sheet to be used is further reduced. The purpose of the present invention is to provide a cylindrical SOFC module.
［課題を解決するための手段］ 現在、円筒型SOFCモジュールにおいて、燃料と空気の
リークを防止するためには金属材料の使用が不可欠であ
る。また、SOFCは作動温度が900℃〜1000℃と極めて高
く、使用可能な金属材料が限られるだけでなく、長時間
のクリープ強度を考慮すると実際上適用可能な材料が存
在しない。[Means for Solving the Problems] At present, in a cylindrical SOFC module, use of a metal material is indispensable to prevent leakage of fuel and air. Further, the operating temperature of the SOFC is extremely high at 900 ° C. to 1000 ° C., and not only is the usable metal material limited, but there is no practically applicable material considering the long-term creep strength.
従って、金属材料を使用する場合は、必然的にメタル
温度の低減が構造上必要となる。本発明は、こうした事
情に基づいて発明された。Therefore, when a metal material is used, a reduction in the metal temperature is inevitably required in the structure. The present invention has been invented based on such circumstances.
即ち、本発明は、反応室と排出室とを仕切る管板と、
前記反応室内に設けられ、かつ前記管板に懸吊された円
筒型セルと、前記管板の反応室側に取り付けられた断熱
材とを具備することを特徴とする円筒型固体電解質燃料
電池モジュールである。That is, the present invention provides a tube sheet for partitioning the reaction chamber and the discharge chamber,
A cylindrical solid electrolyte fuel cell module comprising: a cylindrical cell provided in the reaction chamber and suspended from the tube sheet; and a heat insulator attached to the reaction chamber side of the tube sheet. It is.
本発明において、断熱材は1000℃に耐えるものであれ
ば、特に材質は特定されず、板状でも膜状であってもよ
い。また、膜状の場合は被膜をコーティングする。この
場合、コーティングは、YSZ（イットリア安定化ジルコ
ニア）を例えば200〜300μｍ程度の厚みに溶射すればよ
い。In the present invention, the material of the heat insulating material is not particularly limited as long as it can withstand 1000 ° C., and may be a plate or a film. In the case of a film, a film is coated. In this case, the coating may be sprayed with YSZ (yttria-stabilized zirconia) to a thickness of, for example, about 200 to 300 μm.
［作用］ 本発明によれば、シール管板下面に設置した断熱材に
より、反応室からの輻射熱を遮蔽すると同時に断熱効果
によりシール管板のメタル温度を低下させ、曲げ強度、
クリープ強度を確保すると同時に使用する管板の材質を
低級化できる。[Operation] According to the present invention, the heat insulating material installed on the lower surface of the seal tube plate shields the radiant heat from the reaction chamber, and at the same time, lowers the metal temperature of the seal tube plate by the heat insulating effect, thereby improving the bending strength.
The material of the tube sheet to be used can be reduced while securing the creep strength.
また、管板を介して未利用燃料へ奪われていた熱を防
ぐことができる。In addition, it is possible to prevent heat that has been taken away by the unused fuel through the tube sheet.
［実施例］ 以下、本発明の一実施例に係る円筒型SOFCモジュール
について第１図を参照して説明する。Hereinafter, a cylindrical SOFC module according to an embodiment of the present invention will be described with reference to FIG.
図中の11は円筒型SOFCセルであり、反応室12内に設け
られている。また、13は排出室であり、金属製のシール
管板14によって前記反応室12と仕切られている。前記シ
ール管板14の反応室側には、断熱材（又は断熱被膜）15
が設けられている。ここで、断熱板（又は断熱被膜）
は、実際にはセラミックスの溶射法にてジルコニア系セ
ラミックスをシール管板14の片面に溶着させることによ
って容易に可能である。又、その他の方法として、通常
使用されている断熱板を耐熱性接着材にて貼り付けた
り、シール管板14に付けた植込ボルトにて取り付ける方
法でもよい。なお、図中の16は供給室、17は燃料（又は
反応用空気）、18は反応用空気（又は燃料）、19は未利
用燃料（又は利用空気）、20は未利用空気（未利用燃
料）である。In the figure, reference numeral 11 denotes a cylindrical SOFC cell, which is provided in the reaction chamber 12. Reference numeral 13 denotes a discharge chamber, which is separated from the reaction chamber 12 by a metal seal tube plate. A heat insulating material (or heat insulating coating) 15
Is provided. Here, the heat insulation plate (or heat insulation coating)
In practice, this can be easily achieved by welding a zirconia-based ceramic to one surface of the seal tube sheet 14 by a ceramic spraying method. Further, as other methods, a method of attaching a generally used heat insulating plate with a heat-resistant adhesive or attaching with a stud attached to the seal tube plate 14 may be used. In the figure, 16 is a supply chamber, 17 is fuel (or reaction air), 18 is reaction air (or fuel), 19 is unused fuel (or used air), 20 is unused air (unused fuel). ).
こうした構成のSOFCモジュールにおいて、燃料17はモ
ジュール上部の供給室16に導入された後、円筒型SOFCセ
ル11へ供給される。円筒型SOFCセル11で発電に供されな
かった燃料は排出室13へ集められ、ジュール外へ排出さ
れる。一方、反応用空気18はモジュール下部より供給さ
れ、反応室12で発電に供される。使用されなかった未利
用空気20は、再びモジュール外へ排出される。In the SOFC module having such a configuration, the fuel 17 is supplied to the cylindrical SOFC cell 11 after being introduced into the supply chamber 16 above the module. Fuel not used for power generation in the cylindrical SOFC cell 11 is collected in the discharge chamber 13 and discharged out of the joule. On the other hand, the reaction air 18 is supplied from the lower part of the module and is supplied to the reaction chamber 12 for power generation. The unused air 20 that has not been used is discharged again out of the module.
しかして、上記実施例に係る円筒型SOFCモジュールに
よれば、シール管板14の反応室12側に断熱板（又は断熱
被膜）15を施行した構成となっているため、反応室12か
らの輻射熱を遮蔽すると同時に断熱作用によりシール管
板14の温度を下げることができ、材料のグレードの低級
化、曲げ強度、クリープ強度の向上が可能となる。ちな
みに、反応室内の温度は一般に900〜1000℃程度を必要
とするため、シール管板14にはハステロイ系の高級材料
しか用いることができず、またクリープ強度の点で極め
て厳しい条件となる。なお、シール管板14の温度低減の
ためには、供給室16と排出室13の機能を入れ替えるとさ
らに効果的である。しかし、この場合、逆にシール管板
14に生ずる熱応力に注意を払う必要がある。However, according to the cylindrical SOFC module according to the above embodiment, since the heat insulating plate (or heat insulating coating) 15 is provided on the reaction tube 12 side of the seal tube plate 14, the radiant heat from the reaction chamber 12 is provided. At the same time, the temperature of the seal tube sheet 14 can be reduced by the heat insulation effect, and the grade of the material can be reduced, and the bending strength and the creep strength can be improved. Incidentally, since the temperature in the reaction chamber generally needs to be about 900 to 1000 ° C., only a high-grade Hastelloy-based material can be used for the seal tube sheet 14, and the condition becomes extremely severe in terms of creep strength. In order to reduce the temperature of the seal tube sheet 14, it is more effective to exchange the functions of the supply chamber 16 and the discharge chamber 13. However, in this case, the reverse
Attention must be paid to the thermal stresses that occur at 14.
事実、金属材料の管板のみの従来のモジュールでは管
板メタル温度が900℃程度となるのに対し、断熱板（セ
ラミックボード）を付けた本願発明のモジュールの場
合、断熱効果により750℃程度の管板メタル温度となっ
た（第４図参照）。但し、第４図において、断熱板があ
る場合の許容応力（Ｓ）は2.8Kg/cm2、断熱板がない場
合のそれは0.5Kg/cm2である。ちなみに、本願発明に係
る断熱板の厚み（ｔ）は、下記式より従来の管板（16m
m）に対し約1/2の板厚で済み、材料のグレードの低級化
が図れることが判明した。In fact, in the conventional module having only a tube sheet made of a metal material, the metal temperature of the tube sheet is about 900 ° C., whereas in the case of the module of the present invention having an insulating plate (ceramic board), the temperature is about 750 ° C. due to the heat insulating effect. The tube sheet metal temperature was reached (see FIG. 4). However, in FIG. 4, the allowable stress (S) when there is a heat insulating plate is 2.8 kg / cm 2 , and that when there is no heat insulating plate is 0.5 kg / cm 2 . By the way, the thickness (t) of the heat insulating plate according to the present invention can be calculated by the following equation.
It was found that the plate thickness was only about 1/2 that of m), and the material grade could be reduced.
従って、約1/2の板厚で済む。 Therefore, only about 1/2 thickness is required.
また、従来、管板を介して排出燃料へ奪われていた熱
の排空気側へ戻すことにより、空気予熱等の熱回収が容
易にできる。In addition, by returning the heat, which has conventionally been taken away by the discharged fuel through the tube sheet, to the exhaust air side, heat recovery such as air preheating can be easily performed.
［発明の効果］ 以上詳述した如く本発明によれば、シール型モジュー
ル構造において、シール管板のメタル温度を低下させ、
かつ曲げ強度，クリープ強度を確保し、更に使用するシ
ール管板の材質を低級化しえる円筒型SOFCモジュールを
提供できる。[Effects of the Invention] As described in detail above, according to the present invention, in the seal type module structure, the metal temperature of the seal tube sheet is reduced,
In addition, it is possible to provide a cylindrical SOFC module capable of securing bending strength and creep strength and further reducing the material of a seal tube sheet to be used.
第１図は本発明の一実施例に係る円筒型SOFCモジュール
の説明図、第２図は従来のシールレス型モジュールの説
明図、第３図は従来のシール型モジュールの説明図、第
４図は本発明及び従来のSOFCモジュールによる許容応力
と作動温度との関係を示す特性図である。 11……円筒型SOFCセル、12……反応室、13……排出室、
14……シール管板、15……断熱板、16……供給室。FIG. 1 is an explanatory view of a cylindrical SOFC module according to one embodiment of the present invention, FIG. 2 is an explanatory view of a conventional sealless module, FIG. 3 is an explanatory view of a conventional seal type module, FIG. FIG. 4 is a characteristic diagram showing a relationship between allowable stress and operating temperature by the present invention and a conventional SOFC module. 11 …… cylindrical SOFC cell, 12 …… reaction chamber, 13 …… discharge chamber,
14 ... Seal tube plate, 15 ... Insulation plate, 16 ... Supply chamber.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) H01M 8/24 H01M 8/12 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) H01M 8/24 H01M 8/12
Claims (1)
応室内に設けられ、かつ前記管板に懸吊された円筒型セ
ルと、前記管板の反応室側に取り付けられた断熱材とを
具備することを特徴とする円筒型固体電解質燃料電池モ
ジュール。1. A tube sheet separating a reaction chamber and a discharge chamber, a cylindrical cell provided in the reaction chamber and suspended from the tube sheet, and a heat insulating member attached to the reaction chamber side of the tube sheet. A cylindrical solid electrolyte fuel cell module comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2218082A JP2948285B2 (en) | 1990-08-21 | 1990-08-21 | Cylindrical solid electrolyte fuel cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2218082A JP2948285B2 (en) | 1990-08-21 | 1990-08-21 | Cylindrical solid electrolyte fuel cell module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04104474A JPH04104474A (en) | 1992-04-06 |
| JP2948285B2 true JP2948285B2 (en) | 1999-09-13 |
Family
ID=16714358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2218082A Expired - Fee Related JP2948285B2 (en) | 1990-08-21 | 1990-08-21 | Cylindrical solid electrolyte fuel cell module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2948285B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003045455A (en) * | 2001-07-26 | 2003-02-14 | Hitachi Ltd | High temperature solid oxide fuel cell |
| KR100885696B1 (en) * | 2002-05-07 | 2009-02-26 | 더 리전트 오브 더 유니버시티 오브 캘리포니아 | Electrochemical cell stack assembly |
| US8278013B2 (en) * | 2007-05-10 | 2012-10-02 | Alan Devoe | Fuel cell device and system |
| GB2497843B (en) * | 2011-11-30 | 2018-05-09 | Bosch Gmbh Robert | Fuel cell system |
-
1990
- 1990-08-21 JP JP2218082A patent/JP2948285B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04104474A (en) | 1992-04-06 |
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