JP2005174745A - 燃料電池システムの運転方法及び燃料電池システム - Google Patents
燃料電池システムの運転方法及び燃料電池システム Download PDFInfo
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Abstract
【解決手段】原料燃料mを改質して改質ガスrを生成する改質部5と、原料燃料を燃焼して改質部を加熱する燃焼部4と、改質ガス中の一酸化炭素を低減して一酸化炭素低減ガスgを生成する一酸化炭素低減部6、7と、一酸化炭素低減ガスを燃料ガスとする燃料電池30とを備える燃料電池システムにおいて、原料燃料を燃焼部に供給して改質部を所定の温度に加熱し、続いて、原料燃料の燃焼部への供給を停止し、原料燃料を改質部に供給して改質ガスを生成し、改質ガスを一酸化炭素低減部に導入して一酸化炭素低減部を加熱し、続いて、一酸化炭素低減部で生成した一酸化炭素低減ガスを燃料電池に導入して発電する。
【選択図】 図1
Description
そこで、本発明は、アシスト燃焼系を備えることなくシステム構成が簡単な燃料電池システムと、その起動及び運転制御方法を提供し、信頼性の高い安定運転できる燃料電池システムを提供することを目的とする。
2 燃焼空気供給部
3 三方弁(第1の流路切替手段)
4 燃焼部
5 改質部
6 変成部(一酸化炭素低減部)
7 選択酸化部(一酸化炭素低減部)
8 三方弁(第2の流路切替手段)
9 改質部温度検知器
10 変成部温度検知器(一酸化炭素低減部温度検知器)
11 選択酸化部温度検知器(一酸化炭素低減部温度検知器)
12 原料燃料吐出配管
13 原料燃料供給配管
14 原料燃料燃焼配管
15 酸化剤ガス配管
16 燃焼部排気配管
17 改質ガス配管
18 変成ガス配管
19 燃料ガス吐出配管
20 燃料ガス供給配管
21 改質ガス燃焼配管
22 燃料電池オフガス配管
22 改質用水供給配管
30 燃料電池
31 電力ケーブル
40 制御装置
a 燃焼空気
A、B、C 起動時の改質部所定温度(第3の温度)、変成部所定温度(第4の温度)、選択酸化部所定温度(第4の温度)
A1、A2 第1の温度、第2の温度
a1、a2 発電電流値の所定低減・増大量
g、g1 燃料ガス、変成ガス
g’ 燃焼用ガス
i1〜i7 制御信号
m 原料燃料
N1、N2 発電電流を低減・増大した連続回数
n1、n2 発電電流を低減・増大した連続回数の所定回数
r 改質ガス
Ta 改質部温度
Tb、Tc 変成部温度(一酸化炭素低減部温度)、選択酸化部温度(一酸化炭素低減部温度)
TI 温度検知器
t1、t2 所定時間
Claims (6)
- 原料燃料を改質して改質ガスを生成する改質部と、前記原料燃料を燃焼して前記改質部を加熱する燃焼部と、前記改質ガス中の一酸化炭素を低減して一酸化炭素低減ガスを生成する一酸化炭素低減部と、前記一酸化炭素低減ガスを燃料ガスとする燃料電池とを備える燃料電池システムの運転方法であって;
前記原料燃料を前記燃焼部に供給して前記改質部を所定の温度に加熱する第1の予熱工程と;
前記第1の予熱工程に続いて、前記原料燃料の燃焼部への供給を停止し、前記原料燃料を前記改質部に供給して改質ガスを生成し、前記改質ガスを前記一酸化炭素低減部に導入して前記一酸化炭素低減部を加熱する第2の予熱工程と;
前記第2の予熱工程の後に、前記一酸化炭素低減部で生成した一酸化炭素低減ガスを前記燃料電池に導入して発電する発電工程とを備える;
燃料電池システムの運転方法。 - 前記一酸化炭素低減部の温度が所定の温度以上となったときに、前記第2の予熱工程から前記発電工程へ移行する;
請求項1に記載の燃料電池システムの運転方法。 - 原料燃料を供給する原料燃料供給部と、前記原料燃料を改質して改質ガスを生成する改質部と、前記改質ガス中の一酸化炭素を低減して一酸化炭素低減ガスを生成する一酸化炭素低減部と、前記一酸化炭素低減ガスを燃料ガスとする燃料電池と、前記燃料電池のオフガスを燃焼して前記改質部を加熱する燃焼部とを備える燃料電池システムの運転方法であって;
前記改質部の温度を検知し、検知された温度を所定の第1の温度及び所定の第2の温度と比較する改質部温度比較工程と;
前記改質部温度比較工程における前記検知された温度が前記第1の温度以下のときに前記燃料電池において発電電流を低減する工程であって、前記発電電流を低減した後所定の時間は発電電流を保持する電流低減工程と;
前記改質部温度比較工程における前記検知された温度が前記第2の温度以上のときに、前記燃料電池において発電電流を増大する工程であって、前記発電電流を増大した後所定の時間は発電電流を保持する電流増大工程とを備える;
燃料電池システムの運転方法。 - 前記電流低減工程の連続実施回数が所定回数に達したときに、前記原料燃料供給部からの原料燃料の供給量を増加する燃料増加工程と;
前記電流増大工程の連続実施回数が所定回数に達したときに、前記原料燃料供給部からの原料燃料の供給量を減少する燃料減少工程とを備える;
請求項3に記載の燃料電池システムの運転方法。 - 原料燃料を供給する原料燃料供給部と;
前記原料燃料を改質して改質ガスを生成する改質部と;
前記改質ガス中の一酸化炭素を低減して一酸化炭素低減ガスを生成する一酸化炭素低減部と;
前記一酸化炭素低減ガスを燃料ガスとする燃料電池と;
前記原料燃料、前記一酸化炭素低減ガスまたは前記燃料電池のオフガスを燃焼して前記改質部を加熱する燃焼部と;
前記原料燃料を前記燃焼部に供給する流路と;
前記原料燃料を前記改質部に供給する流路と;
前記一酸化炭素低減ガスを前記燃料電池に供給する流路と;
前記一酸化炭素低減ガスを前記燃焼部に供給する流路と;
前記燃料電池のオフガスを前記燃焼部に供給する流路と;
前記原料燃料を前記燃焼部に供給する流路と前記改質部に供給する流路とを切り替える第1の流路切替手段と;
前記一酸化炭素低減ガスを前記燃料電池に供給する流路と前記燃焼部に供給する流路とを切り替える第2の流路切替手段とを備える;
燃料電池システム。 - 前記改質部の温度を検知する改質部温度検知器と;
前記一酸化炭素低減部の温度を検知する一酸化炭素低減部温度検知器と;
前記改質部温度検知器で検知された温度と比較される第1、第2及び第3の温度並びに前記一酸化炭素低減部温度検知器で検知された温度と比較される第4の温度を記憶する記憶部と、
起動時に、前記原料燃料を前記燃焼部に供給して前記改質部温度検知器で検知された温度が第3の温度以上となると、前記原料燃料の燃焼部への供給を停止し、前記原料燃料を前記改質部に供給して改質ガスを生成し、前記改質ガスを前記一酸化炭素低減部に導入して前記一酸化炭素低減部を加熱し、また、前記一酸化炭素低減部温度検知器で検知された温度が第4の温度以上となると、前記一酸化炭素低減部で生成される一酸化炭素ガスを前記燃料電池に導入し発電を開始する制御を行い、
通常運転時に、前記改質部温度検知器で検知された温度が前記第1の温度以下のときに前記燃料電池において発電電流を低減するが、前記発電電流を低減した後所定の時間は発電電流を保持し、また、前記改質部温度検知器で検知された温度が前記第2の温度以上のときに、前記燃料電池において発電電流を増大するが、前記発電電流を増大した後所定の時間は発電電流を保持し、且つ、連続して発電電流を低減あるいは増大した回数が所定の回数に達すると前記原料燃料部から供給する原料燃料の供給量を増加あるいは減少する制御を行う制御部とを有する制御装置とを備える;
請求項5に記載の燃料電池システム。
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PCT/JP2004/018496 WO2005057705A1 (ja) | 2003-12-11 | 2004-12-10 | 燃料電池システムの運転方法及び燃料電池システム |
US10/582,491 US20070122666A1 (en) | 2003-12-11 | 2004-12-10 | Method of operating fuel cell system and fuel cell system |
CA002549046A CA2549046A1 (en) | 2003-12-11 | 2004-12-10 | Fuel cell system and method for operating fuel cell system |
EP04820308A EP1703577A4 (en) | 2003-12-11 | 2004-12-10 | METHOD FOR OPERATING A FUEL CELL SYSTEM AND FUEL CELL SYSTEM |
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JP2005294135A (ja) * | 2004-04-02 | 2005-10-20 | Idemitsu Kosan Co Ltd | 燃料電池システム及びその運転方法 |
JP2008010369A (ja) * | 2006-06-30 | 2008-01-17 | Sanyo Electric Co Ltd | 燃料電池システムの起動方法および燃料電池システム |
JP2009120421A (ja) * | 2007-11-13 | 2009-06-04 | Honda Motor Co Ltd | 水素製造発電システムの水素製造方法 |
WO2011118775A1 (ja) * | 2010-03-26 | 2011-09-29 | Jx日鉱日石エネルギー株式会社 | 燃料電池システム、改質器システム、及び燃料電池システムの運転方法 |
JP2014002921A (ja) * | 2012-06-19 | 2014-01-09 | Panasonic Corp | 燃料電池システム |
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JP2019523533A (ja) * | 2016-07-29 | 2019-08-22 | プロトン モータ フューエル セル ゲゼルシャフト ミット ベシュレンクテル ハフツングProton Motor Fuel Cell Gmbh | 防爆型燃料電池システム及び燃料電池システムの不活性化方法 |
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JP2005294135A (ja) * | 2004-04-02 | 2005-10-20 | Idemitsu Kosan Co Ltd | 燃料電池システム及びその運転方法 |
JP2008010369A (ja) * | 2006-06-30 | 2008-01-17 | Sanyo Electric Co Ltd | 燃料電池システムの起動方法および燃料電池システム |
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EP1703577A1 (en) | 2006-09-20 |
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