JP2002008690A - Fuel cell power generation system and its running method - Google Patents
Fuel cell power generation system and its running methodInfo
- Publication number
- JP2002008690A JP2002008690A JP2000185356A JP2000185356A JP2002008690A JP 2002008690 A JP2002008690 A JP 2002008690A JP 2000185356 A JP2000185356 A JP 2000185356A JP 2000185356 A JP2000185356 A JP 2000185356A JP 2002008690 A JP2002008690 A JP 2002008690A
- Authority
- JP
- Japan
- Prior art keywords
- water
- fuel cell
- power generation
- cell power
- heat exchanger
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、天然ガス等の燃料
を水蒸気改質して水素ガスを含む燃料ガスを生成させ、
この燃料ガスを空気中の酸素等の酸化性ガスと電気化学
的に反応させて発電を行う燃料電池を用いた定置型など
の発電システムおよびその運転方法に関する。The present invention relates to a fuel gas containing hydrogen gas by steam reforming a fuel such as natural gas.
The present invention relates to a stationary type power generation system using a fuel cell that generates power by electrochemically reacting the fuel gas with an oxidizing gas such as oxygen in the air, and a method of operating the power generation system.
【０００２】[0002]
【従来の技術】一般に、燃料電池発電システムでは、燃
料電池における発電効率を高く維持するために、燃料電
池内の温度を調整する冷却水が用いられる。冷却水は、
通常、予め脱塩などの処理が施されて使用される。図２
は、従来の燃料電池発電システムを示すもので、この燃
料電池発電システムは、水素ガスを含む燃料ガスと酸化
性ガスとを電気化学的に反応させて発電を行う燃料電池
発電装置１１と、燃料電池発電装置１１において発電時
に生成する熱を利用して加温した温水を貯留する温水貯
留槽２と、温水貯留槽２に市水などの補給水を供給する
補給水供給経路１９とを備えている。2. Description of the Related Art Generally, in a fuel cell power generation system, cooling water for adjusting the temperature inside the fuel cell is used in order to maintain high power generation efficiency in the fuel cell. The cooling water is
Usually, it is used after being subjected to a treatment such as desalting in advance. FIG.
1 shows a conventional fuel cell power generation system. The fuel cell power generation system includes a fuel cell power generation device 11 that electrochemically reacts a fuel gas containing hydrogen gas with an oxidizing gas to generate power, The battery power generator 11 includes a hot water storage tank 2 for storing hot water heated using heat generated at the time of power generation, and a makeup water supply path 19 for supplying makeup water such as city water to the warm water storage tank 2. I have.
【０００３】燃料電池発電装置１１は、燃料電池本体３
と、燃料電池本体３の温度を調整する冷却水循環経路１
４と、燃料電池本体３から排出される排ガス中の水蒸気
を凝縮させて回収する水回収熱交換器１５と、この熱交
換器１５により回収した回収水を給水として貯留する給
水貯留槽６と、貯留槽６内の給水を処理して冷却水とし
て冷却水循環経路１４に供給する水処理装置７と、冷却
水を利用して水を加温し温水とする排熱利用熱交換器８
と、給水貯留槽６に市水などの補給水を供給する補給水
供給経路２０とを備えている。[0003] The fuel cell power generator 11 comprises a fuel cell main body 3.
And a cooling water circulation path 1 for adjusting the temperature of the fuel cell body 3
4, a water recovery heat exchanger 15 for condensing and recovering water vapor in exhaust gas discharged from the fuel cell body 3, a water supply tank 6 for storing recovered water recovered by the heat exchanger 15 as water supply, A water treatment device 7 that processes water supplied in the storage tank 6 and supplies the water to the cooling water circulation path 14 as cooling water, and a heat exchanger 8 that uses waste heat to heat the water using the cooling water to heat the water.
And a makeup water supply path 20 for supplying makeup water such as city water to the water supply storage tank 6.
【０００４】燃料電池本体３は、燃料極２１と空気極２
２とが電解質２３を挟むように電極板２４、２５を介し
て配置されて構成されている。水処理装置７としては、
給水貯留槽６からの給水中の不純物を除去するイオン交
換式水処理装置などが用いられる。温水貯留槽２は、槽
内の温水を熱利用設備（図示略）に供給することができ
るようになっている。[0004] The fuel cell body 3 comprises a fuel electrode 21 and an air electrode 2.
2 are arranged via electrode plates 24 and 25 so as to sandwich the electrolyte 23. As the water treatment device 7,
An ion-exchange type water treatment device or the like for removing impurities in feedwater from the feedwater storage tank 6 is used. The hot water storage tank 2 can supply hot water in the tank to a heat utilization facility (not shown).
【０００５】上記燃料電池発電システムにおいては、改
質器（図示略）において、天然ガス等の燃料を水蒸気改
質して水素ガスを含む燃料ガスを生成させ、この燃料ガ
スを燃料ガス供給経路２６を通して燃料極２１に供給す
るとともに、空気などの酸化性ガスを、酸化性ガス供給
経路２７を通して空気極２２に供給し、これら燃料ガス
と酸化性ガスとを電気化学的に反応させ、発電を行う。
改質器からの燃料系排ガスは、排出経路２８を通して水
回収熱交換器１５を経由して系外に排出される。また空
気極２２からの酸化系排ガスは、排出経路２９を通して
排出経路２８内の燃料系排ガスに合流し、熱交換器１５
を経て系外に排出される。In the above fuel cell power generation system, a fuel such as natural gas is reformed by steam in a reformer (not shown) to generate a fuel gas containing hydrogen gas. And the oxidizing gas such as air is supplied to the air electrode 22 through the oxidizing gas supply path 27, and the fuel gas and the oxidizing gas are electrochemically reacted to generate power. .
Fuel system exhaust gas from the reformer is discharged out of the system via the water recovery heat exchanger 15 through the discharge path 28. The oxidizing exhaust gas from the air electrode 22 joins the fuel exhaust gas in the discharge path 28 through the discharge path 29 and
Is discharged out of the system.
【０００６】冷却水循環経路１４では、冷却水が循環す
ることによって、燃料電池本体３が予め設定された温度
を維持するように冷却され、この際、冷却水は加温され
て高温（通常６０〜８０℃）となり排熱利用熱交換器８
に導入される。排熱利用熱交換器８では、高温の冷却水
により温水貯留槽２内の水が加温され５０〜６０℃程度
の温水となる。排熱利用熱交換器８を経た冷却水は、経
路１６を経て水回収熱交換器１５に導入され、経路１７
を経て給水貯留槽６に導入される。水回収熱交換器１５
では、排出経路２８内の燃料系および酸化系排ガス中の
水蒸気が冷却水によって冷却され凝縮し、凝縮水は経路
１２を通して給水貯留槽６に回収される。また給水貯留
槽６内の給水が不足した場合には、市水などの補給水が
補給水供給経路２０を通して不足分を補うように供給さ
れる。給水貯留槽６内の給水には、市水などの補給水等
に由来する炭酸イオン、金属イオン等の不純物が混入す
るため、給水は、水処理装置７によって不純物を除去し
た後に、供給経路１３を通して冷却水として燃料電池本
体３内の冷却水循環経路１４に供給する。これによって
冷却水循環経路１４におけるスケール発生等を防ぐこと
ができる。In the cooling water circulation path 14, the cooling water is circulated to cool the fuel cell body 3 so as to maintain a predetermined temperature. At this time, the cooling water is heated to a high temperature (usually 60 to 60). 80 ° C) and heat exchanger 8 utilizing waste heat
Will be introduced. In the heat exchanger 8 utilizing waste heat, the water in the hot water storage tank 2 is heated by the high-temperature cooling water to become hot water of about 50 to 60 ° C. The cooling water that has passed through the waste heat utilizing heat exchanger 8 is introduced into the water recovery heat exchanger 15 via the path 16,
Through the feed water storage tank 6. Water recovery heat exchanger 15
Then, the water vapor in the fuel system and the oxidizing system exhaust gas in the discharge path 28 is cooled and condensed by the cooling water, and the condensed water is collected in the feedwater storage tank 6 through the path 12. When the water supply in the water supply storage tank 6 is insufficient, makeup water such as city water is supplied through the makeup water supply path 20 so as to compensate for the shortage. Since impurities such as carbonate ions and metal ions derived from makeup water such as city water are mixed in the water supply in the water supply storage tank 6, the water supply is performed by removing the impurities by the water treatment device 7 and then supplying the water with the supply path 13. The cooling water is supplied to the cooling water circulation path 14 in the fuel cell body 3 through the cooling water. Thus, it is possible to prevent the generation of scale and the like in the cooling water circulation path 14.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記燃
料電池発電システムでは、水処理装置７に与えられる負
荷が大きいため水処理装置７として複雑かつ大型のもの
を使用する必要があり、設備コストが高騰する問題があ
った。またイオン交換樹脂の再生処理コストなどの運転
コストが嵩むという問題があった。本発明は上記事情に
鑑みてなされたもので、設備コストおよび運転コストの
削減が可能となる燃料電池発電システムおよびその運転
方法を提供することを目的としている。However, in the above-mentioned fuel cell power generation system, the load applied to the water treatment device 7 is large, so that it is necessary to use a complicated and large-sized water treatment device 7, and the equipment cost rises. There was a problem to do. In addition, there is a problem that operation costs such as a regeneration treatment cost of the ion exchange resin increase. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a fuel cell power generation system and an operation method thereof capable of reducing equipment costs and operation costs.
【０００８】[0008]
【課題を解決するための手段】本発明の燃料電池発電シ
ステムは、水素ガスを含む燃料ガスと酸化性ガスとを電
気化学的に反応させて発電を行う燃料電池発電装置と、
この燃料電池発電装置において発電時に生成する熱を利
用して加温した温水を貯留する温水貯留槽と、温水貯留
槽に補給水を供給する補給水供給経路とを備え、燃料電
池発電装置が、燃料電池本体と、この燃料電池本体の温
度を調整する冷却水循環経路と、燃料電池本体から排出
される排ガス中の水蒸気を凝縮させて回収する水回収熱
交換器と、この熱交換器により回収した給水を処理して
冷却水として冷却水循環経路に供給する水処理装置と、
冷却水を利用して水を加温し温水とする加温手段とを備
え、水回収熱交換器が、排ガス中の水蒸気を、補給水供
給経路を流れる補給水により冷却して凝縮させることが
できるように構成されていることを特徴とする。本発明
の燃料電池発電システムの運転方法は、上記燃料電池発
電システムを運転する方法であって、水回収熱交換器に
おいて、排ガス中の水蒸気を、補給水供給経路を流れる
補給水により冷却して凝縮させることを特徴とする運転
方法である。A fuel cell power generation system according to the present invention comprises: a fuel cell power generation apparatus for generating power by electrochemically reacting a fuel gas containing hydrogen gas with an oxidizing gas;
The fuel cell power generator includes a hot water storage tank that stores hot water heated by using heat generated at the time of power generation, and a makeup water supply path that supplies makeup water to the hot water storage tank. A fuel cell body, a cooling water circulation path for adjusting the temperature of the fuel cell body, a water recovery heat exchanger for condensing and recovering water vapor in exhaust gas discharged from the fuel cell body, and a water recovery heat exchanger recovered by the heat exchanger A water treatment device for processing the supply water and supplying it as cooling water to a cooling water circulation path;
A heating means for heating the water by using the cooling water to make the water hot water, wherein the water recovery heat exchanger can cool the steam in the exhaust gas by the makeup water flowing through the makeup water supply path and condense it. It is characterized in that it is configured to be able to. The operation method of the fuel cell power generation system of the present invention is a method of operating the fuel cell power generation system, wherein the water recovery heat exchanger cools water vapor in exhaust gas with makeup water flowing through a makeup water supply path. An operation method characterized by condensing.
【０００９】[0009]
【発明の実施の形態】図１は、本発明の燃料電池発電シ
ステムの一実施形態を示すもので、ここに示す燃料電池
発電システムは、水素ガスを含む燃料ガスと酸化性ガス
とを電気化学的に反応させて発電を行う燃料電池発電装
置１と、燃料電池発電装置１において発電時に生成する
熱を利用して加温した温水を貯留する温水貯留槽２と、
温水貯留槽２に市水などの補給水を供給する補給水供給
経路９とを備えている。FIG. 1 shows an embodiment of a fuel cell power generation system according to the present invention. The fuel cell power generation system shown in FIG. 1 uses a fuel gas containing hydrogen gas and an oxidizing gas electrochemically. A fuel cell power generation device 1 for generating power by reacting in a dynamic manner, a hot water storage tank 2 for storing hot water heated by utilizing heat generated during power generation in the fuel cell power generation device 1,
A makeup water supply path 9 for supplying makeup water such as city water to the hot water storage tank 2 is provided.
【００１０】燃料電池発電装置１は、燃料電池本体３
と、燃料電池本体３の温度を調整する冷却水循環経路４
と、燃料電池本体３から排出される排ガス中の水蒸気を
凝縮させて回収する水回収熱交換器５と、この熱交換器
５により回収した回収水を給水として貯留する給水貯留
槽６と、貯留槽６内の給水を処理して冷却水として冷却
水循環経路４に供給する水処理装置７と、冷却水を利用
して水を加温し温水とする加温手段である排熱利用熱交
換器８と、給水貯留槽６に市水などの補給水を供給する
補給水供給経路１０とを備えている。The fuel cell power generator 1 includes a fuel cell body 3
And a cooling water circulation path 4 for adjusting the temperature of the fuel cell body 3
A water recovery heat exchanger 5 for condensing and recovering water vapor in exhaust gas discharged from the fuel cell body 3, a water supply storage tank 6 for storing recovered water recovered by the heat exchanger 5 as feed water, A water treatment device 7 for processing water supplied in the tank 6 and supplying it to the cooling water circulation path 4 as cooling water, and a heat exchanger utilizing waste heat as heating means for heating the water using the cooling water to heat the water. And a makeup water supply path 10 for supplying makeup water such as city water to the water supply storage tank 6.
【００１１】燃料電池本体３は、燃料極２１と空気極２
２とが電解質２３を挟むように電極板２４、２５を介し
て配置されて構成されている。水処理装置７としては、
給水貯留槽６からの給水中の不純物を除去するイオン交
換式脱塩装置などが用いられる。温水貯留槽２は、槽内
の温水を熱利用設備（図示略）に供給することができる
ようになっている。The fuel cell body 3 includes a fuel electrode 21 and an air electrode 2.
2 are arranged via electrode plates 24 and 25 so as to sandwich the electrolyte 23. As the water treatment device 7,
An ion exchange type desalination apparatus or the like for removing impurities in feed water from the feed water storage tank 6 is used. The hot water storage tank 2 can supply hot water in the tank to a heat utilization facility (not shown).
【００１２】本実施形態の燃料電池発電システムにおい
て、水回収熱交換器５は、補給水供給経路９に設けられ
ており、燃料極２１および空気極２２から排出経路２
８、２９を通して排出された排ガス中の水蒸気を、補給
水により冷却して凝縮させ、回収することができるよう
になっている。In the fuel cell power generation system of the present embodiment, the water recovery heat exchanger 5 is provided in the makeup water supply path 9, and extends from the fuel electrode 21 and the air electrode 22 to the discharge path 2.
The water vapor in the exhaust gas discharged through 8, 29 can be cooled by the make-up water, condensed, and recovered.
【００１３】以下、上記燃料電池発電システムの使用方
法について説明する。この燃料電池発電システムにおい
ては、改質器（図示略）において、天然ガス等の燃料を
水蒸気改質して水素ガスを含む燃料ガスを生成させ、こ
の燃料ガスを燃料ガス供給経路２６を通して燃料極２１
に供給するとともに、空気などの酸化性ガスを、酸化性
ガス供給経路２７を通して空気極２２に供給し、これら
燃料ガスと酸化性ガスとを電気化学的に反応させ、発電
を行う。改質器からの燃料系排ガスは、排出経路２８を
通して水回収熱交換器５を経由して系外に排出される。
また空気極２２からの酸化系排ガスは、排出経路２９を
通して排出経路２８に合流し、熱交換器５を経て系外に
排出される。Hereinafter, a method of using the fuel cell power generation system will be described. In this fuel cell power generation system, a fuel such as natural gas is steam reformed in a reformer (not shown) to generate a fuel gas containing hydrogen gas, and this fuel gas is passed through a fuel gas supply path 26 to a fuel electrode. 21
And an oxidizing gas such as air is supplied to the air electrode 22 through an oxidizing gas supply path 27, and the fuel gas and the oxidizing gas are electrochemically reacted to generate power. The fuel system exhaust gas from the reformer is discharged out of the system via the water recovery heat exchanger 5 through the discharge path 28.
The oxidizing exhaust gas from the air electrode 22 joins the discharge path 28 through the discharge path 29 and is discharged outside the system via the heat exchanger 5.
【００１４】冷却水循環経路４では、冷却水が循環する
ことによって、燃料電池本体３が予め設定された温度を
維持するように冷却され、この際、冷却水は加温されて
高温（通常６０〜８０℃）となり排熱利用熱交換器８に
導入される。排熱利用熱交換器８では、高温の冷却水に
より温水貯留槽２内の水が加温され５０〜６０℃程度の
温水となるとともに、冷却水の温度は５０〜６０℃程度
となる。排熱利用熱交換器８を経た冷却水は、経路１８
を通して給水貯留槽６に送られる。In the cooling water circulation path 4, the cooling water is circulated to cool the fuel cell main body 3 so as to maintain a predetermined temperature. At this time, the cooling water is heated to a high temperature (usually 60 to 60). 80 ° C.) and is introduced into the waste heat utilizing heat exchanger 8. In the heat exchanger 8 utilizing exhaust heat, the water in the hot water storage tank 2 is heated by the high-temperature cooling water to become hot water of about 50 to 60 ° C, and the temperature of the cooling water becomes about 50 to 60 ° C. The cooling water that has passed through the waste heat utilizing heat exchanger 8 passes through a path 18.
Through the feed water storage tank 6.
【００１５】給水貯留槽６内の水量が不足した場合に
は、補給水供給経路１０を通して市水などの補給水を給
水貯留槽６に供給する。熱利用設備（図示略）への温水
供給によって温水貯留槽５内の水量が不足した場合に
は、補給水供給経路９を通して市水などの補給水を温水
貯留槽２に供給する。市水の温度は、通常、５〜２５℃
である。When the amount of water in the water supply storage tank 6 becomes insufficient, supply water such as city water is supplied to the water supply storage tank 6 through the supply water supply path 10. When the amount of water in the hot water storage tank 5 becomes insufficient due to the supply of hot water to the heat utilization facility (not shown), supply water such as city water is supplied to the hot water storage tank 2 through the supply water supply path 9. The temperature of city water is usually 5-25 ° C
It is.
【００１６】水回収熱交換器５では、排出経路２８内の
燃料系および酸化系排ガス中の水蒸気が補給水供給経路
９を流れる補給水により冷却され凝縮し、凝縮水は経路
１２を通して給水貯留槽６に回収される。In the water recovery heat exchanger 5, the water vapor in the fuel system and oxidizing system exhaust gas in the discharge path 28 is cooled and condensed by the make-up water flowing through the make-up water supply path 9, and the condensed water passes through the path 12 and is stored in the water supply tank. Collected in 6.
【００１７】給水貯留槽６内の給水は、経路３０を通し
て水処理装置７に導入し、ここで脱塩などの処理を行っ
た後、供給経路１３を通して冷却水として燃料電池本体
３内の冷却水循環経路４に供給する。これによって、市
水などの補給水等に由来する炭酸イオン、金属イオン等
の不純物を除去することができる。The feed water in the feed water storage tank 6 is introduced into the water treatment device 7 through a passage 30, where it is subjected to a treatment such as desalination and the like. Feed to path 4. Thereby, impurities such as carbonate ions and metal ions derived from makeup water such as city water can be removed.
【００１８】本実施形態の燃料電池発電システムにおい
ては、水回収熱交換器５が、補給水供給経路９に設けら
れており、排出経路２８、２９を通して排出された排ガ
ス中の水蒸気を、補給水供給経路９を流れる低温の補給
水により冷却して凝縮させることができるようになって
いるので、比較的高温となる冷却水によって排ガス中の
水蒸気を凝縮させる方式の従来の燃料電池発電システム
（図２を参照）に比べ、排ガス中の水蒸気の冷却効率を
高め、イオンなどの不純物濃度が低い蒸留水である凝縮
水の回収量を多くすることができる。よって、給水貯留
槽６内の不純物濃度を低くし、水処理装置７に与えられ
る脱塩処理等の負荷を軽減することができる。従って、
水処理装置７の処理能力を低く設定することができ、水
処理装置７に要する設備コストを削減し、かつイオン交
換樹脂の再生処理コストなどの運転コストを低く抑える
ことができる。また水処理装置７の処理能力を低く設定
することができることから、装置を小型化し、その設置
スペースを小さくすることができる。また、凝縮水の回
収量を高めることができることから、補給水供給経路１
０を通して給水貯留槽６に供給される補給水量を削減
し、補給水に要するコストを低く抑えることができる。In the fuel cell power generation system of the present embodiment, the water recovery heat exchanger 5 is provided in the makeup water supply passage 9, and the steam in the exhaust gas discharged through the discharge passages 28 and 29 is supplied to the makeup water A conventional fuel cell power generation system of the type in which water vapor in exhaust gas is condensed by cooling water having a relatively high temperature because cooling water can be condensed by low-temperature makeup water flowing through the supply path 9 (see FIG. 2), the efficiency of cooling water vapor in the exhaust gas can be increased, and the amount of condensed water that is distilled water having a low concentration of impurities such as ions can be increased. Therefore, the impurity concentration in the feedwater storage tank 6 can be reduced, and the load of the desalination treatment or the like applied to the water treatment device 7 can be reduced. Therefore,
The processing capacity of the water treatment device 7 can be set low, the equipment cost required for the water treatment device 7 can be reduced, and the operating costs such as the regeneration treatment cost of the ion exchange resin can be suppressed. Further, since the processing capacity of the water treatment device 7 can be set low, the size of the device can be reduced and the installation space thereof can be reduced. Further, since the amount of condensed water recovered can be increased, the makeup water supply path 1
The amount of make-up water supplied to the water supply storage tank 6 through 0 can be reduced, and the cost required for make-up water can be kept low.
【００１９】[0019]
【発明の効果】以上説明したように、本発明の燃料電池
発電システムは、水回収熱交換器が、排ガス中の水蒸気
を、補給水供給経路を流れる低温の補給水により冷却し
て凝縮させることができるように構成されているので、
比較的高温となる冷却水によって排ガス中の水蒸気を凝
縮させる水回収熱交換器を有する従来の燃料電池発電シ
ステムに比べ、排ガス中の水蒸気の冷却効率を高め、イ
オンなどの不純物濃度が低い蒸留水である凝縮水の回収
量を多くし、水処理装置に与えられる脱塩処理等の負荷
を軽減することができる。従って、水処理装置の処理能
力を低く設定することができ、水処理装置に要する設備
コストおよび運転コストを低く抑え、しかも装置の設置
スペースを小さくすることができる。また、凝縮水の回
収量を高めることができることから、補給水に要するコ
ストを低く抑えることができる。As described above, in the fuel cell power generation system of the present invention, the water recovery heat exchanger cools and condenses the steam in the exhaust gas with the low-temperature make-up water flowing through the make-up water supply path. It is configured to be able to
Compared to conventional fuel cell power generation systems that have a water recovery heat exchanger that condenses water vapor in exhaust gas with cooling water that is relatively hot, distilled water with higher efficiency in cooling water vapor in exhaust gas and a lower concentration of impurities such as ions , The amount of condensed water recovered can be increased, and the load of desalination treatment and the like applied to the water treatment apparatus can be reduced. Therefore, the processing capacity of the water treatment apparatus can be set low, the equipment cost and the operation cost required for the water treatment apparatus can be reduced, and the installation space of the apparatus can be reduced. Further, since the amount of condensed water recovered can be increased, the cost required for makeup water can be reduced.
【図１】 本発明の燃料電池発電システムの一実施形
態を示す構成図である。FIG. 1 is a configuration diagram showing one embodiment of a fuel cell power generation system of the present invention.
【図２】 従来の燃料電池発電システムの一例を示す
構成図である。FIG. 2 is a configuration diagram illustrating an example of a conventional fuel cell power generation system.
１・・・燃料電池発電装置、２・・・温水貯留槽、３・・・燃料
電池本体、４、冷却水循環経路、５・・・水回収熱交換
器、７・・・水処理装置、８・・・排熱利用熱交換器（加温手
段）、９・・・補給水供給経路DESCRIPTION OF SYMBOLS 1 ... Fuel cell power generator, 2 ... Hot water storage tank, 3 ... Fuel cell main body 4, Cooling water circulation path, 5 ... Water recovery heat exchanger, 7 ... Water treatment apparatus, 8 ... heat exchanger using waste heat (heating means), 9 ... supply water supply path
Claims (2)
とを電気化学的に反応させて発電を行う燃料電池発電装
置と、この燃料電池発電装置において発電時に生成する
熱を利用して加温した温水を貯留する温水貯留槽と、温
水貯留槽に補給水を供給する補給水供給経路とを備えた
燃料電池発電システムにおいて、 燃料電池発電装置は、燃料電池本体と、この燃料電池本
体の温度を調整する冷却水循環経路と、燃料電池本体か
ら排出される排ガス中の水蒸気を凝縮させて回収する水
回収熱交換器と、この熱交換器により回収した給水を処
理して冷却水として冷却水循環経路に供給する水処理装
置と、冷却水を利用して水を加温し温水とする加温手段
とを備え、 水回収熱交換器が、排ガス中の水蒸気を、補給水供給経
路を流れる補給水により冷却して凝縮させることができ
るように構成されていることを特徴とする燃料電池発電
システム。1. A fuel cell power generator for generating power by electrochemically reacting a fuel gas containing hydrogen gas and an oxidizing gas, and heating the fuel cell power generator using heat generated during power generation. In a fuel cell power generation system including a hot water storage tank for storing hot water stored therein and a makeup water supply path for supplying makeup water to the hot water storage tank, the fuel cell power generation device includes a fuel cell body, and a temperature of the fuel cell body. Cooling water circulation path, water recovery heat exchanger for condensing and recovering water vapor in the exhaust gas discharged from the fuel cell body, and cooling water circulation path for processing the supply water recovered by this heat exchanger to produce cooling water And a heating means for heating the water using the cooling water to warm the water, and a water recovery heat exchanger converts the steam in the exhaust gas into the makeup water flowing through the makeup water supply path. Cooled by Fuel cell power generation system characterized by being configured to be able to condense.
とを電気化学的に反応させて発電を行う燃料電池発電装
置と、この燃料電池発電装置において発電時に生成する
熱を利用して加温した温水を貯留する温水貯留槽と、温
水貯留槽に補給水を供給する補給水供給経路とを備えた
燃料電池発電システムを運転する方法であって、 燃料電池発電装置が、燃料電池本体と、この燃料電池本
体の温度を調整する冷却水循環経路と、燃料電池本体か
ら排出される排ガス中の水蒸気を凝縮させて回収する水
回収熱交換器と、この熱交換器により回収した給水を処
理して冷却水として冷却水循環経路に供給する水処理装
置と、冷却水を利用して水を加温し温水とする加温手段
とを備えたものであり、 水回収熱交換器において、排ガス中の水蒸気を、補給水
供給経路を流れる補給水により冷却して凝縮させること
を特徴とする燃料電池発電システムの運転方法。2. A fuel cell power generator for generating power by electrochemically reacting a fuel gas containing hydrogen gas with an oxidizing gas, and heating the fuel cell power generator using heat generated during power generation. A method for operating a fuel cell power generation system including a hot water storage tank for storing hot water stored therein, and a makeup water supply path for supplying makeup water to the hot water storage tank, wherein the fuel cell power generation device includes a fuel cell body, A cooling water circulation path for adjusting the temperature of the fuel cell main body, a water recovery heat exchanger for condensing and recovering water vapor in exhaust gas discharged from the fuel cell main body, and a feed water recovered by the heat exchanger. It is equipped with a water treatment device that supplies cooling water to the cooling water circulation path, and heating means that uses the cooling water to heat the water to make it hot water. And make-up water supply The method of operating a fuel cell power generation system characterized by condensing and cooling the makeup water flowing path.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000185356A JP4660889B2 (en) | 2000-06-20 | 2000-06-20 | Fuel cell power generation system and operation method thereof |
| ES01401611T ES2325978T3 (en) | 2000-06-20 | 2001-06-19 | FUEL CELL POWER GENERATION SYSTEM AND OPERATING METHOD. |
| AT01401611T ATE429043T1 (en) | 2000-06-20 | 2001-06-19 | FUEL CELL POWER SUPPLY SYSTEM AND OPERATING METHOD |
| DE60138338T DE60138338D1 (en) | 2000-06-20 | 2001-06-19 | Fuel cell power supply system and operating method |
| EP01401611A EP1168476B1 (en) | 2000-06-20 | 2001-06-19 | Fuel cell power generating system and operation method |
| EP08101770A EP1968145A1 (en) | 2000-06-20 | 2001-06-19 | Fuel cell power generating system and operation method |
| US09/885,672 US6787255B2 (en) | 2000-06-20 | 2001-06-20 | Fuel cell power generating system and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000185356A JP4660889B2 (en) | 2000-06-20 | 2000-06-20 | Fuel cell power generation system and operation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002008690A true JP2002008690A (en) | 2002-01-11 |
| JP4660889B2 JP4660889B2 (en) | 2011-03-30 |
Family
ID=18685685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000185356A Expired - Fee Related JP4660889B2 (en) | 2000-06-20 | 2000-06-20 | Fuel cell power generation system and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4660889B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448691B1 (en) * | 2002-03-12 | 2004-09-16 | 주식회사 엘지이아이 | Cooling system for fuel cell |
| KR100448690B1 (en) * | 2002-03-12 | 2004-09-16 | 주식회사 엘지이아이 | Cooling system for fuel cell |
| WO2004049481A3 (en) * | 2002-11-22 | 2005-04-21 | Intelligent Energy Ltd | Thermal energy management in electrochemical fuel cells |
| CN100423342C (en) * | 2004-01-30 | 2008-10-01 | 松下电器产业株式会社 | Fuel cell system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04370666A (en) * | 1991-06-19 | 1992-12-24 | Fuji Electric Co Ltd | Water processing system of fuel cell power generating device |
| JPH05121081A (en) * | 1991-07-04 | 1993-05-18 | Shimizu Corp | Cooling facility for fuel cell |
| JPH05121082A (en) * | 1991-07-04 | 1993-05-18 | Shimizu Corp | Exhaust heat utilizing facility of fuel cell |
| JPH08138714A (en) * | 1994-11-14 | 1996-05-31 | Osaka Gas Co Ltd | Produced water recovery device of fuel cell power generating system |
| JPH09231990A (en) * | 1996-02-23 | 1997-09-05 | Fuji Electric Co Ltd | Operation method for ion exchange water treatment device for fuel battery |
| JPH103935A (en) * | 1996-06-13 | 1998-01-06 | Tokyo Gas Co Ltd | Fuel cell power generation device |
| JP2000012055A (en) * | 1998-06-22 | 2000-01-14 | Osaka Gas Co Ltd | Fuel cell power generating facility |
| JP2001210340A (en) * | 2000-01-24 | 2001-08-03 | Sanyo Electric Co Ltd | Exhaust heat recovery system of solid polymer type fuel cell |
-
2000
- 2000-06-20 JP JP2000185356A patent/JP4660889B2/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04370666A (en) * | 1991-06-19 | 1992-12-24 | Fuji Electric Co Ltd | Water processing system of fuel cell power generating device |
| JPH05121081A (en) * | 1991-07-04 | 1993-05-18 | Shimizu Corp | Cooling facility for fuel cell |
| JPH05121082A (en) * | 1991-07-04 | 1993-05-18 | Shimizu Corp | Exhaust heat utilizing facility of fuel cell |
| JPH08138714A (en) * | 1994-11-14 | 1996-05-31 | Osaka Gas Co Ltd | Produced water recovery device of fuel cell power generating system |
| JPH09231990A (en) * | 1996-02-23 | 1997-09-05 | Fuji Electric Co Ltd | Operation method for ion exchange water treatment device for fuel battery |
| JPH103935A (en) * | 1996-06-13 | 1998-01-06 | Tokyo Gas Co Ltd | Fuel cell power generation device |
| JP2000012055A (en) * | 1998-06-22 | 2000-01-14 | Osaka Gas Co Ltd | Fuel cell power generating facility |
| JP2001210340A (en) * | 2000-01-24 | 2001-08-03 | Sanyo Electric Co Ltd | Exhaust heat recovery system of solid polymer type fuel cell |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100448691B1 (en) * | 2002-03-12 | 2004-09-16 | 주식회사 엘지이아이 | Cooling system for fuel cell |
| KR100448690B1 (en) * | 2002-03-12 | 2004-09-16 | 주식회사 엘지이아이 | Cooling system for fuel cell |
| WO2004049481A3 (en) * | 2002-11-22 | 2005-04-21 | Intelligent Energy Ltd | Thermal energy management in electrochemical fuel cells |
| GB2396688B (en) * | 2002-11-22 | 2006-06-28 | Intelligent Energy Ltd | Thermal energy management in electrochemical fuel cells |
| CN100352092C (en) * | 2002-11-22 | 2007-11-28 | 智慧能量有限公司 | Thermal energy management in electrochemical fuel cells |
| US7498094B2 (en) | 2002-11-22 | 2009-03-03 | Intelligent Energy Limited | Thermal energy management in electrochemical fuel cells |
| KR101065648B1 (en) * | 2002-11-22 | 2011-09-20 | 인텔리전트 에너지 리미티드 | Thermal energy management in electrochemical fuel cells |
| CN100423342C (en) * | 2004-01-30 | 2008-10-01 | 松下电器产业株式会社 | Fuel cell system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4660889B2 (en) | 2011-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2009513829A (en) | Electrolysis | |
| JPH11214021A (en) | Solid electrolyte type fuel cell power generating apparatus | |
| US6692854B2 (en) | Fuel cell generator system and method for operating same | |
| JP2854171B2 (en) | Makeup water recovery equipment for fuel cell power generators | |
| US6787255B2 (en) | Fuel cell power generating system and operation method | |
| JP3943405B2 (en) | Fuel cell power generation system | |
| JP2002008690A (en) | Fuel cell power generation system and its running method | |
| JP2009245769A (en) | Fuel cell power generating apparatus | |
| JP2003045471A (en) | Fuel cell power generation device | |
| JPH1064566A (en) | Fuel cell power generator and waste heat recovery method therefor | |
| JP2000348751A (en) | Solid high-polymer type fuel cell system | |
| JP2006040553A (en) | Fuel cell system | |
| JP3557104B2 (en) | Phosphoric acid fuel cell power plant | |
| JP4660888B2 (en) | Fuel cell power generation system and operation method thereof | |
| JPS6280970A (en) | Power generating method of fuel cell | |
| JP3106552B2 (en) | Water treatment system for fuel cell power plant | |
| JP5530374B2 (en) | Fuel cell system | |
| JP2011103309A (en) | Fuel cell system | |
| JP5292865B2 (en) | Water recovery method for fuel cell power generator and fuel cell power generator | |
| JP2002319417A (en) | Solid polymer fuel cell generating device | |
| JP2007115715A (en) | Fuel cell power generating system | |
| JP2002100382A (en) | Fuel cell power generator | |
| JP5163204B2 (en) | Fuel cell power generator | |
| JP2009140726A (en) | Fuel cell power generation device | |
| JPH04138671A (en) | Fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070613 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20101202 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20101207 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20101220 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140114 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |