JPH0888014A - Safety operation method for fused carbonate fuel cell power generating system - Google Patents
Safety operation method for fused carbonate fuel cell power generating systemInfo
- Publication number
- JPH0888014A JPH0888014A JP6222787A JP22278794A JPH0888014A JP H0888014 A JPH0888014 A JP H0888014A JP 6222787 A JP6222787 A JP 6222787A JP 22278794 A JP22278794 A JP 22278794A JP H0888014 A JPH0888014 A JP H0888014A
- Authority
- JP
- Japan
- Prior art keywords
- oxygen concentration
- fuel cell
- carbonate fuel
- power generating
- generating system
- 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.)
- Granted
Links
Classifications
-
- 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
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融炭酸塩型燃料電池
発電装置を安全に運転する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for safely operating a molten carbonate fuel cell power generator.
【０００２】[0002]
【従来の技術】従来から、溶融炭酸塩型燃料電池発電装
置では、電池スタックを構成しているセルごとの電圧測
定はしないので、局所的なセルの劣化現象の把握はでき
ない。現在では、セルの劣化現象を把握する手段として
は、電気事業法に定められているように、電池出口温度
の挙動を監視している。2. Description of the Related Art Conventionally, in a molten carbonate fuel cell power generator, since the voltage of each cell constituting a cell stack is not measured, it is not possible to grasp the local phenomenon of cell deterioration. At present, as a means for grasping the deterioration phenomenon of cells, the behavior of the battery outlet temperature is monitored as stipulated in the Electricity Business Law.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前述の
ように、電池出口の温度の監視では、電池本体の熱容量
が大きいため、適確な運転操作ができないという問題点
があった。本発明は、このような問題点を解決しようと
するものである。すなわち、本発明は、電池反応によっ
て生ずるガス組成の酸素濃度を計測し、それを監視する
ことにより、適確な運転操作ができる溶融炭酸塩型燃料
電池発電装置の安全運転方法を提供することを目的とす
るものである。However, as described above, in monitoring the temperature at the battery outlet, there is a problem in that a proper driving operation cannot be performed because the heat capacity of the battery main body is large. The present invention is intended to solve such a problem. That is, the present invention provides a safe operation method of a molten carbonate fuel cell power generator capable of performing an accurate operation by measuring the oxygen concentration of a gas composition generated by a cell reaction and monitoring it. It is intended.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明の方法は、溶融炭酸塩型燃料電池発電装置の
運転中に、アノード排ガスラインの酸素濃度を計測し、
その酸素濃度について、爆発下限界以内の値を設定値と
して設定しておき、その計測値がその設定値を越えない
範囲内の所で該発電装置の運転を停止することからな
る。In order to achieve the above object, the method of the present invention is to measure the oxygen concentration in the anode exhaust gas line during operation of a molten carbonate fuel cell power generator,
Regarding the oxygen concentration, a value within the lower explosion limit is set as a set value, and the operation of the power generator is stopped at a place where the measured value does not exceed the set value.
【０００５】[0005]
【作用】正規の電池反応は以下のとおりである。 アノード反応 Ｈ2 ＋ＣＯ3 2- ＋２ｅ- →Ｈ2 Ｏ＋ＣＯ
2 カソード反応 １／２Ｏ2 ＋ＣＯ2 →ＣＯ3 2- ＋２ｅ- 通常はＨ2 とＣＯ3 2- が反応して電気が流れる。しか
し、局所的にＵｆ（燃料利用率）の高い所（１００％以
上）ではＨ2 不足のため、ＣＯ3 2- の分解反応が起こ
る。[Function] The normal battery reaction is as follows. Anode reaction H 2 + CO 3 2- + 2e − → H 2 O + CO
2 Cathode reaction 1 / 2O 2 + CO 2 → CO 3 2- + 2e - Normally, H 2 reacts with CO 3 2- , and electricity flows. However, locally Uf at high (fuel utilization) (100% or more) in order of H 2 deficiency, CO 3 2-decomposition reaction occurs.
【０００６】ＣＯ3 2- →１／２Ｏ2 ＋ＣＯ2 ＋２ｅ- この異常反応によって発生するＯ2 濃度を監視していけ
ば電池出口温度挙動監視よりも、じん速に、かつ、安全
に、適確な運転操作ができる。本発明によれば、溶融炭
酸塩型燃料電池発電装置の運転中に、アノード排ガスラ
インの酸素濃度を計測し、その酸素濃度について、爆発
下限界以内の値を設定値として設定しておき、その計測
値がその設定値を越えない範囲内の所で該発電装置の運
転を停止することからなるので、アノード反応の異常反
応によって生ずるＯ2 濃度の監視となり、溶融炭酸塩型
燃料電池発電装置を安全に運転できる。CO 3 2- → 1/2 O 2 + CO 2 + 2e - If the O 2 concentration generated by this abnormal reaction is monitored, it is more accurate and faster than the battery outlet temperature behavior monitoring. You can perform various driving operations. According to the present invention, during operation of the molten carbonate fuel cell power generator, the oxygen concentration of the anode exhaust gas line is measured, and the oxygen concentration is set to a value within the lower explosion limit as a set value. Since the operation of the power generator is stopped within a range where the measured value does not exceed the set value, the O2 concentration caused by the abnormal reaction of the anode reaction is monitored, and the molten carbonate fuel cell power generator is safe. You can drive to
【０００７】[0007]
【実施例】図１は本発明の方法を実施する装置の一例を
示した全体構成図である。図１において、１は溶融炭酸
塩型燃料電池の電池容器、Ｃはカソード極、Ａはアノー
ド極、２はカソード側ガス入口ライン、３はアノード側
ガス入口ライン、４はカソード排ガスライン、５はアノ
ード排ガスライン、６は該アノード排ガスライン５に設
けられた酸素ガス濃度計である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall block diagram showing an example of an apparatus for carrying out the method of the present invention. In FIG. 1, 1 is a cell container of a molten carbonate fuel cell, C is a cathode electrode, A is an anode electrode, 2 is a cathode gas inlet line, 3 is an anode gas inlet line, 4 is a cathode exhaust gas line, and 5 is An anode exhaust gas line 6 is an oxygen gas concentration meter provided in the anode exhaust gas line 5.
【０００８】すなわち、図１に示すように、溶融炭酸塩
型燃料電池の運転中は、アノード排ガスライン５に酸素
ガス濃度計６を設けておき、該濃度計６で酸素濃度を計
測する。ここで、アノード排ガス中の酸素濃度は６．１
％までは爆発限界内とされているから、理論上は、該濃
度計６による計測値が上昇してきても、それが６．１％
を越えない所で該発電装置の運転を停止させれば安全と
いうことになるが、実際問題として、安全率を４とし
て、該濃度計６による計測値が１．５２５％、つまり、
１．５％を越えない所で該発電装置を停止させれば安全
が保たれる。That is, as shown in FIG. 1, during operation of the molten carbonate fuel cell, an oxygen gas concentration meter 6 is provided in the anode exhaust gas line 5, and the oxygen concentration is measured by the concentration meter 6. Here, the oxygen concentration in the anode exhaust gas is 6.1.
Since the explosion limit is up to%, theoretically, even if the value measured by the densitometer 6 increases, it is 6.1%.
It would be safe if the operation of the power generator is stopped at a place not exceeding, but as a practical matter, the safety factor is 4, and the measured value by the densitometer 6 is 1.525%, that is,
Safety is maintained if the generator is stopped at a place not exceeding 1.5%.
【０００９】発電装置の停止には該装置への燃料の供給
を絶てばよい。To stop the power generation device, the fuel supply to the device may be cut off.
【００１０】[0010]
【発明の効果】以上説明したように、本発明によれば、
溶融炭酸塩型燃料電池発電装置の運転中に、アノード排
ガスラインの酸素濃度を計測し、その酸素濃度につい
て、爆発下限界以内の値を設定値として設定しておき、
その計測値がその設定値を越えない範囲内の所で該発電
装置の運転を停止することからなるので、アノード反応
の異常反応によって生ずる酸素濃度の監視によるため、
従来の電池出口の温度の挙動よりも、じん速に、安全
に、かつ、適格な運転操作ができる。As described above, according to the present invention,
During operation of the molten carbonate fuel cell power generator, the oxygen concentration of the anode exhaust gas line was measured, and the oxygen concentration was set as a set value within the lower explosion limit,
Since the operation of the power generator is stopped at a place where the measured value does not exceed the set value, because the oxygen concentration caused by the abnormal reaction of the anode reaction is monitored,
It enables quicker, safer, and more appropriate driving operation than the conventional behavior of the temperature at the battery outlet.
【図１】本発明の方法を実施する装置の一例を示した全
体構成図である。FIG. 1 is an overall configuration diagram showing an example of an apparatus for carrying out the method of the present invention.
１ 溶融炭酸塩型燃料電池の電池容器 ４ カソード排ガスライン ５ アノード排ガスライン ６ 酸素ガス濃度計 1 Battery Container for Molten Carbonate Fuel Cell 4 Cathode Exhaust Line 5 Anode Exhaust Line 6 Oxygen Gas Concentration Meter
Claims (2)
に、アノード排ガスラインの酸素濃度を計測し、その酸
素濃度について、爆発下限界以内の値を設定値として設
定しておき、その計測値がその設定値を越えない範囲内
の所で該発電装置の運転を停止することを特徴とする、
溶融炭酸塩型燃料電池発電装置の安全運転方法。1. The oxygen concentration of the anode exhaust gas line is measured during operation of the molten carbonate fuel cell power generator, and the oxygen concentration is set to a value within the lower explosion limit as a set value, and the measurement is performed. Characterized in that the operation of the power generator is stopped in a range where the value does not exceed the set value,
Method for safe operation of molten carbonate fuel cell power generator.
値を爆発下限界の２５％にして運転することからなる請
求項１記載の溶融炭酸塩型燃料電池発電装置の安全運転
方法。2. The method for safe operation of a molten carbonate fuel cell power generator according to claim 1, which is operated by setting the oxygen concentration of the anode exhaust gas line to 25% of the lower explosion limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22278794A JP3509947B2 (en) | 1994-09-19 | 1994-09-19 | Safe operation method of molten carbonate fuel cell power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22278794A JP3509947B2 (en) | 1994-09-19 | 1994-09-19 | Safe operation method of molten carbonate fuel cell power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0888014A true JPH0888014A (en) | 1996-04-02 |
| JP3509947B2 JP3509947B2 (en) | 2004-03-22 |
Family
ID=16787896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22278794A Expired - Fee Related JP3509947B2 (en) | 1994-09-19 | 1994-09-19 | Safe operation method of molten carbonate fuel cell power generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3509947B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6815101B2 (en) * | 2001-07-25 | 2004-11-09 | Ballard Power Systems Inc. | Fuel cell ambient environment monitoring and control apparatus and method |
| US6953630B2 (en) | 2001-07-25 | 2005-10-11 | Ballard Power Systems Inc. | Fuel cell anomaly detection method and apparatus |
-
1994
- 1994-09-19 JP JP22278794A patent/JP3509947B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6815101B2 (en) * | 2001-07-25 | 2004-11-09 | Ballard Power Systems Inc. | Fuel cell ambient environment monitoring and control apparatus and method |
| US6953630B2 (en) | 2001-07-25 | 2005-10-11 | Ballard Power Systems Inc. | Fuel cell anomaly detection method and apparatus |
| US6969561B2 (en) | 2001-07-25 | 2005-11-29 | Ballard Power Systems Inc. | Fuel cell ambient environment monitoring and control apparatus and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3509947B2 (en) | 2004-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20031211 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20031224 |
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| LAPS | Cancellation because of no payment of annual fees |