JP2009081084A - Fuel cell power generation apparatus - Google Patents

Fuel cell power generation apparatus Download PDF

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JP2009081084A
JP2009081084A JP2007250464A JP2007250464A JP2009081084A JP 2009081084 A JP2009081084 A JP 2009081084A JP 2007250464 A JP2007250464 A JP 2007250464A JP 2007250464 A JP2007250464 A JP 2007250464A JP 2009081084 A JP2009081084 A JP 2009081084A
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water
fuel cell
exchange resin
fuel
ion exchange
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Masakazu Hasegawa
雅一 長谷川
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Fuji Electric Co Ltd
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Fuji Electric Holdings Ltd
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell power generation apparatus including: a water supply piping incorporating an electrical deionization device; and a makeup water piping incorporating an ion exchange resin tube, which can supply impure water to the water supply piping and prevent the piping to clog. <P>SOLUTION: The apparatus includes: produced-water recovering and trapping means 10 for recovering produced water from a cathode exhaust gas of a fuel cell stack 16 and a combustion exhaust gas of fuel reforming means 12; cell coolant water circulation means 24 for circulating coolant water into the fuel cell stack 16; an ion exchange resin tube 7 for deionizing tap water to produce deionized water and supplying it to the produced-water recovering and trapping means 10; and an electrical deionization device 5 for defecating the water trapped in the produced-water recovering and trapping means 10 to replenish the cell coolant water circulation means 24 with pure water, and further includes: a circulation piping 20 for returning part of the pure water processed by the electrical deionization device 5 to the ion exchange resin tube 7; and a pump 4 for causing the part of the pure water to go through the circulation piping 20 to send it to the ion exchange resin tube 7. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、燃料電池発電装置の水の補給経路の汚れを抑制できる装置に関する。 The present invention relates to an apparatus capable of suppressing contamination of a water supply path of a fuel cell power generator.

図３は、従来のこの種の燃料電池発電装置のガス系および水系の基本構成を示すフロー図である。冷却水タンク１４に蓄えられた冷却水としての純水は、冷却水タンク１４と燃料電池スタック１６とを循環する電池冷却水配管１７を経由し、ポンプ４１によって燃料電池スタック１６へと送られ、燃料電池スタック１６を所定の温度に冷却した後、再び冷却水タンク１４へ戻される。又、冷却水タンク１４に貯留した純水の一部は、ポンプ４２を備えた改質用水配管１３を通流し、燃料ガスと共に燃料改質手段１２へ送られての水蒸気改質反応に利用され水素を生成する。生成した水素含有ガスは、燃料電池スタック１６の燃料極へ供給される。燃料改質手段１２は、水蒸気改質反応に使用される改質触媒を加熱するためのバーナーとこのバーナーに空気を送るブロア４３を備えている。燃料極から排出する残余のガスは、燃料改質手段１２に備えたバーナーで燃焼される。ブロア４４は、燃料電池スタック１６の空気極に空気を供給する。バーナーから排出される燃焼排ガスと、空気極から排出される空気極排ガスは、生成水回収貯留手段１０に供給されてガス中の水分が回収水として回収される。生成水回収貯留手段１０は、回収した水分を貯留する回収水タンク１と、空気極と回収水タンク１を連通する配管２と、配管２に備えて空気極排ガスを冷却して水分を凝縮させる冷却器１８と、バーナーと回収水タンク１を連通する配管３と、配管３に備えて燃焼排ガスを冷却して水分を凝縮させる冷却器１９とを備える。水分を回収された後のガスは、回収水タンク１の排気口１１から外部に排出される。
回収水タンク１の水中と冷却水タンク１４は配管６で接続されており、その途中にポンプ４と電気式脱イオン装置５が備えられている。冷却水タンクの水位は、水位計で計測されており、冷却水水位が低下すると、回収水タンク１から電気式脱イオン装置５で純化された純水が供給される。
このように反応生成水や燃焼生成水を回収して再利用すれば、外部から水を補給しなくとも燃料電池スタック１６の発電運転を継続することができるが、燃料電池発電装置の運転負荷が低く、十分に水を回収できない時や、水を回収する冷却器が汚れなどにより水回収性能が低下した時や、漏水時などの異常事態が発生すると系の水量が不足し、発電運転の継続が困難となる。そこで、イオン交換樹脂筒７と遮断弁８を組み込んだ補給水配管９が備えられている。この補給水配管９を通して水道水をイオン交換樹脂筒７で純化して回収水タンク１に送り、さらに回収水とともに冷却水タンク１４へと送ることによって冷却水の補給が行われるよう構成されている。
このような燃料電池発電装置において、生成水通流経路の汚れの一つである微生物の繁殖を防止する手段として、特許文献１の装置が知られている。特許文献１の装置の特徴は、補給水を純水または強酸性水に変換する滅菌手段に通流させた後、回収水タンク１へ水を供給していることである。
特開平９−３０６５２３号公報 FIG. 3 is a flow diagram showing the basic configuration of the gas system and water system of this type of conventional fuel cell power generator. The pure water as the cooling water stored in the cooling water tank 14 is sent to the fuel cell stack 16 by the pump 41 via the battery cooling water pipe 17 that circulates between the cooling water tank 14 and the fuel cell stack 16. After the fuel cell stack 16 is cooled to a predetermined temperature, it is returned to the cooling water tank 14 again. A part of the pure water stored in the cooling water tank 14 flows through the reforming water pipe 13 provided with the pump 42 and is used for the steam reforming reaction sent to the fuel reforming means 12 together with the fuel gas. Produce hydrogen. The generated hydrogen-containing gas is supplied to the fuel electrode of the fuel cell stack 16. The fuel reforming means 12 includes a burner for heating a reforming catalyst used in the steam reforming reaction and a blower 43 for sending air to the burner. The remaining gas discharged from the fuel electrode is burned by a burner provided in the fuel reforming means 12. The blower 44 supplies air to the air electrode of the fuel cell stack 16. The combustion exhaust gas discharged from the burner and the air electrode exhaust gas discharged from the air electrode are supplied to the generated water recovery and storage means 10, and the water in the gas is recovered as recovered water. The generated water recovery and storage means 10 is provided with a recovered water tank 1 for storing recovered water, a pipe 2 that communicates the air electrode and the recovered water tank 1, and a pipe 2 that cools the air electrode exhaust gas to condense the water. A cooler 18, a pipe 3 that communicates the burner and the recovered water tank 1, and a cooler 19 that is provided in the pipe 3 and cools the combustion exhaust gas to condense moisture. The gas after the moisture is recovered is discharged to the outside from the exhaust port 11 of the recovered water tank 1.
The water in the recovered water tank 1 and the cooling water tank 14 are connected by a pipe 6, and a pump 4 and an electric deionization device 5 are provided in the middle. The water level in the cooling water tank is measured by a water level meter, and when the cooling water level is lowered, pure water purified by the electric deionizer 5 is supplied from the recovered water tank 1.
If the reaction product water and combustion product water are collected and reused in this way, the power generation operation of the fuel cell stack 16 can be continued without supplying water from the outside. When the water recovery performance is low, when the water recovery performance deteriorates due to contamination of the cooler that collects water, or when water leakage occurs, the amount of water in the system will be insufficient, and power generation operation will continue. It becomes difficult. Therefore, a makeup water pipe 9 incorporating an ion exchange resin cylinder 7 and a shutoff valve 8 is provided. The tap water is purified by the ion exchange resin cylinder 7 through the supply water pipe 9 and sent to the recovered water tank 1, and further supplied to the cooling water tank 14 together with the recovered water so that the cooling water is supplied. .
In such a fuel cell power generation device, the device of Patent Document 1 is known as means for preventing the growth of microorganisms, which is one of the contaminations of the generated water flow path. The feature of the device of Patent Document 1 is that water is supplied to the recovered water tank 1 after passing the makeup water through sterilization means that converts pure water or strong acid water.
JP-A-9-306523

上記のごとく燃料電池発電装置においては、漏水等による回収水不足を考慮して電池冷却水系に水を補給する配管が組み込まれており、イオン交換樹脂筒７で純化され、さらには電気式脱イオン装置５で純化された水が補給されている。従来の一般的な燃料電池発電装置では純化は通常１台のイオン交換樹脂筒のみによって行われていたが、補給水配管９にイオン交換樹脂筒７を設けると、補給水配管９の内部は水の流れがなく、滞留するので、イオン交換樹脂筒７の出口から回収水タンク１に至る配管の内部は、イオン交換樹脂筒７により塩素が処理された純水が充填された状態となり、配管には、ぬめり、藻、バクテリアなどの汚れが発生し、補給によってこれらの汚い水が回収水タンク１に入ったり、あるいは配管が閉塞したりする等の不具合が生じる。
このため、最近の燃料電池発電装置では図３のように、電気式脱イオン装置５を組み込んで純化する方式がしばしば用いられている。しかしながら、この電気式脱イオン装置５はシリカが存在すると正常な純化作用ができないので、前段にイオン交換樹脂筒を組み込み、このイオン交換樹脂筒で水道水中のシリカを除去したのち電気式脱イオン装置で純化する方式とする必要がある。なお、このようにイオン交換樹脂筒でシリカを除去したのち電気式脱イオン装置で純化する方式とした場合にも、イオン交換樹脂筒が正常に機能するまでにはある程度の時間通水することが必要であるため、この間イオン交換樹脂筒でのシリカの除去が不十分となり、電気式脱イオン装置の純化性能が低下してしまうという問題点がある。 As described above, in the fuel cell power generator, piping for supplying water to the battery cooling water system in consideration of a shortage of recovered water due to water leakage or the like is incorporated, purified by the ion exchange resin cylinder 7, and further an electric deionizer. The water purified in 5 is replenished. In a conventional general fuel cell power generation device, purification is usually performed by only one ion exchange resin cylinder. However, if the ion exchange resin cylinder 7 is provided in the makeup water pipe 9, the interior of the makeup water pipe 9 is water. Therefore, the interior of the pipe from the outlet of the ion exchange resin cylinder 7 to the recovered water tank 1 is filled with pure water treated with chlorine by the ion exchange resin cylinder 7, and the pipe is filled with In such a case, dirt such as slime, algae, bacteria, etc. is generated, and there is a problem that such dirty water enters the recovered water tank 1 or the piping is blocked by replenishment.
For this reason, in recent fuel cell power generators, as shown in FIG. 3, a method of incorporating an electric deionizer 5 and purifying is often used. However, since this electric deionization device 5 cannot perform a normal purification action if silica is present, an ion exchange resin cylinder is incorporated in the previous stage, and after removing silica in tap water with this ion exchange resin cylinder, the electric deionization apparatus 5 It is necessary to use a method of purifying with Even when the silica is removed by the ion exchange resin cylinder and then purified by an electric deionization apparatus, water can flow for a certain period of time until the ion exchange resin cylinder functions normally. Since it is necessary, the removal of the silica in the ion exchange resin cylinder becomes insufficient during this time, and there is a problem that the purification performance of the electric deionization device is deteriorated.

本発明は、このような従来の燃料電池発電装置の問題点を考慮してなされたもので、本発明の目的は、電気式脱イオン装置を組み込んだ給水配管とイオン交換樹脂筒を組み込んだ補給水配管を備える燃料電池発電装置において、給水配管へ汚れた水を供給したり、配管の閉塞を生じたりすることなく安全に運転され、電気式脱イオン装置の純化性能が維持できる燃料電池発電装置を提供することにある。   The present invention has been made in consideration of such problems of the conventional fuel cell power generation device. The object of the present invention is to supply water supply pipes incorporating an electric deionization device and ion exchange resin cylinders. In a fuel cell power generation apparatus having a water pipe, the fuel cell power generation apparatus can be operated safely without supplying dirty water to the water supply pipe or causing the pipe to be blocked, and the purification performance of the electric deionization apparatus can be maintained. Is to provide.

本発明者は、水の滞留部分を無くせば汚れが滞留しないことに着目し、本発明を完成させた。
すなわち、本発明の燃料電池発電装置の特徴は、炭化水素系原燃料ガスを水蒸気改質して燃料ガスを得る燃料改質手段と、アノード極に前記燃料ガス、カソード極に酸化剤ガスをそれぞれ導入して電気化学反応により電気エネルギーを発生する燃料電池スタックと、前記燃料電池スタックから排出されるカソード極排ガスおよび前記燃料改質手段から排出される燃焼排ガスから生成水を回収して回収水として貯留する生成水回収貯留手段と、前記燃料電池スタックに冷却水を循環させる電池冷却水循環手段と、水道水を脱イオンして脱イオン水を製造し前記生成水回収貯留手段へ供給するイオン交換樹脂筒と、前記生成水回収貯留手段に貯留した水を純化して前記電池冷却水循環手段に純水を補給する電気式脱イオン装置とを備えた燃料電池発電装置において、前記電気式脱イオン装置により処理された純水の一部を前記イオン交換樹脂筒へ戻す循環配管と、前記純水の一部を前記循環配管を経由して前記イオン交換樹脂筒へ送水するポンプとを備えたことである（請求項１の発明）。
また、本発明の燃料電池発電装置の特徴は、請求項１に記載の燃料電池発電装置において、前記循環配管は遮断弁を備えたことである（請求項２の発明）。
また、本発明の燃料電池発電装置の特徴は、請求項１に記載の燃料電池発電装置において、前記循環配管は流量調節弁と逆止弁とを直列に配置して備えたことである（請求項３の発明）。 The inventor of the present invention has completed the present invention, paying attention to the fact that dirt is not retained if the water retaining portion is eliminated.
That is, the fuel cell power generator of the present invention is characterized by a fuel reforming means for obtaining a fuel gas by steam reforming a hydrocarbon-based raw fuel gas, the fuel gas at the anode electrode, and an oxidant gas at the cathode electrode, respectively. The produced water is recovered from the fuel cell stack that is introduced and generates electric energy by an electrochemical reaction, the cathode exhaust gas discharged from the fuel cell stack, and the combustion exhaust gas discharged from the fuel reforming means, and used as recovered water. Generated water collecting and storing means for storing, battery cooling water circulating means for circulating cooling water to the fuel cell stack, and ion exchange resin for producing deionized water by deionizing tap water and supplying it to the generated water collecting and storing means A fuel cell comprising a cylinder and an electric deionization device that purifies the water stored in the generated water recovery storage means and replenishes the battery cooling water circulation means with pure water In the electric apparatus, a circulation pipe for returning a part of the pure water treated by the electric deionization apparatus to the ion exchange resin cylinder, and a part of the pure water through the circulation pipe for the ion exchange resin cylinder And a pump for feeding water to the water (invention of claim 1).
The fuel cell power generator according to the present invention is characterized in that, in the fuel cell power generator according to claim 1, the circulation pipe is provided with a shutoff valve (invention of claim 2).
The fuel cell power generator according to the present invention is characterized in that, in the fuel cell power generator according to claim 1, the circulation pipe is provided with a flow rate adjusting valve and a check valve arranged in series. Item 3).

上記のごとく、電気式脱イオン装置により処理された純水の一部を補給水配管に設けられたイオン交換樹脂筒の上流側へと戻す循環配管２０を備え、この循環配管２０に純水を流せば、イオン交換樹脂筒７およびイオン交換樹脂筒７より下流の補給水配管９内の水の長期にわたる滞留がなくなるので、藻、ぬめり、バクテリアなどの汚れの発生が抑制され、イオン交換樹脂筒７の性能劣化が防止される。また、イオン交換樹脂筒７は、補給水供給開始とともに直ちに純化機能を発揮する。したがって上記のごとく構成すれば、汚れた水を供給したり、配管の閉塞を生じたりすることなく安全に運転され、電気式脱イオン装置の純化性能が維持可能となる。 As described above, the circulation pipe 20 for returning a part of pure water treated by the electric deionizer to the upstream side of the ion exchange resin cylinder provided in the makeup water pipe is provided, and pure water is supplied to the circulation pipe 20. If it is allowed to flow, since there is no long-term retention of water in the ion exchange resin cylinder 7 and the makeup water pipe 9 downstream from the ion exchange resin cylinder 7, the generation of dirt such as algae, slime and bacteria is suppressed, and the ion exchange resin cylinder 7 performance degradation is prevented. In addition, the ion exchange resin cylinder 7 immediately exhibits a purifying function as the makeup water supply starts. Therefore, if comprised as mentioned above, it will drive | operate safely, without supplying dirty water or producing the obstruction | occlusion of piping, and it becomes possible to maintain the purification performance of an electric deionization apparatus.

本発明の燃料電池発電装置の概略構成図を図１に示す。図１において、図３に示した従来のガス系および水系の構成要素と同一機能を有する構成要素には同一符号が付されている。
本発明の燃料電池発電装置は、炭化水素系原燃料ガスを水蒸気改質して燃料ガスを得る燃料改質手段と、アノード極に前記燃料ガス、カソード極に酸化剤ガスをそれぞれ導入して電気化学反応により電気エネルギーを発生する燃料電池スタックと、前記燃料電池スタックから排出されるカソード極排ガスおよび前記燃料改質手段から排出される燃焼排ガスから生成水を回収して回収水として貯留する生成水回収貯留手段と、前記燃料電池スタックに冷却水を循環させる電池冷却水循環手段と、水道水を脱イオンして脱イオン水を製造し前記生成水回収貯留手段へ供給するイオン交換樹脂筒と、前記生成水回収貯留手段に貯留した水を純化して前記電池冷却水循環手段に純水を補給する電気式脱イオン装置とを備え、さらに、前記電気式脱イオン装置により処理された純水の一部を前記イオン交換樹脂筒へ戻す循環配管と、前記純水の一部を前記循環配管を経由して前記イオン交換樹脂筒へ送水するポンプとを備えている。そして、前記循環配管は遮断弁を備えることが望ましい。
図１に示した実施例の構成と、図３の従来例の構成との相違点は、給水配管６の電気式脱イオン装置５の出口側から補給水配管９のイオン交換樹脂筒７の入口側へと水を戻す循環水配管２０が備えられ、循環水遮断弁２１が組み込まれていることにある。
したがって、この実施例の構成においては、ポンプ４の運転中に循環水遮断弁２１を適宜開閉することによって、補給水配管９内の水の長期間にわたる滞留がなくなり、藻、ぬめり、バクテリアなどの汚れの発生が防止され、電気式脱イオン装置５の純化性能が維持可能となる。また、本構成では、循環水が常時循環しているので、補給を開始すると直ちにイオン交換樹脂筒７の純化機能が得られることとなる。
図２は、本発明の燃料電池発電装置における、別の概略構成図である。図２においても、図３に示した従来例、あるいは図１に示した実施例のガス系および水系の構成要素と同一機能を有する構成要素には同一符号が付されている。図１の弁２１に換えて、前記循環配管は流量調節弁と逆止弁とを直列に配置している。
図２に示した実施例の構成の特徴は、給水配管６の電気式脱イオン装置５の出口側から補給水配管９のイオン交換樹脂筒７の入口側へと水を戻すために備えられた循環水配管２０Aに、循環水量調節弁２２と逆止弁２３が組み込まれていることにある。本実施例のごとく、オリフィスや弁等の流量調整機能を組み込めば、ポンプ４が運転されているときには微量の循環水がこの循環水配管に循環されるため、電磁弁等の電気品を設置しなくとも図１の実施例と同様の効果が得られることとなる。 A schematic configuration diagram of the fuel cell power generator of the present invention is shown in FIG. 1, components having the same functions as those of the conventional gas and water components shown in FIG. 3 are denoted by the same reference numerals.
The fuel cell power generator according to the present invention includes a fuel reforming means for obtaining a fuel gas by steam reforming a hydrocarbon-based raw fuel gas, and an electric gas by introducing the fuel gas into the anode electrode and the oxidant gas into the cathode electrode, respectively. A fuel cell stack that generates electrical energy by a chemical reaction, and a generated water that collects the generated water from the cathode exhaust gas discharged from the fuel cell stack and the combustion exhaust gas discharged from the fuel reforming means and stores it as recovered water Recovery and storage means, battery cooling water circulation means for circulating cooling water to the fuel cell stack, ion exchange resin cylinders that deionize tap water to produce deionized water and supply the generated water collection and storage means, An electrical deionization device that purifies the water stored in the generated water recovery and storage means and replenishes the battery cooling water circulation means with pure water; and A circulation pipe for returning a part of pure water treated by the apparatus to the ion exchange resin cylinder; and a pump for feeding a part of the pure water to the ion exchange resin cylinder via the circulation pipe. . And it is desirable for the circulation piping to be provided with a shut-off valve.
The difference between the configuration of the embodiment shown in FIG. 1 and the configuration of the conventional example of FIG. 3 is that the inlet of the ion exchange resin cylinder 7 of the makeup water pipe 9 from the outlet side of the electric deionizer 5 of the water supply pipe 6. A circulating water pipe 20 for returning water to the side is provided, and a circulating water cutoff valve 21 is incorporated.
Therefore, in the configuration of this embodiment, by appropriately opening and closing the circulating water shut-off valve 21 during operation of the pump 4, the water in the make-up water pipe 9 does not stay for a long period of time, and algae, slime, bacteria, etc. The occurrence of dirt is prevented, and the purification performance of the electric deionization device 5 can be maintained. Further, in this configuration, since the circulating water is constantly circulated, the purification function of the ion exchange resin cylinder 7 can be obtained immediately after replenishment is started.
FIG. 2 is another schematic configuration diagram of the fuel cell power generator of the present invention. Also in FIG. 2, the same reference numerals are given to components having the same functions as the gas system and water system components of the conventional example shown in FIG. 3 or the embodiment shown in FIG. Instead of the valve 21 in FIG. 1, the circulation pipe has a flow rate adjusting valve and a check valve arranged in series.
2 is provided for returning water from the outlet side of the electric deionizer 5 of the water supply pipe 6 to the inlet side of the ion exchange resin cylinder 7 of the makeup water pipe 9. The circulating water pipe 20A has a circulating water amount adjusting valve 22 and a check valve 23 incorporated therein. If a flow rate adjustment function such as an orifice or a valve is incorporated as in this embodiment, a small amount of circulating water is circulated through this circulating water pipe when the pump 4 is in operation. Even if it is not, the same effect as the embodiment of FIG. 1 can be obtained.

本発明の燃料電池発電装置の概略構成図Schematic configuration diagram of a fuel cell power generator of the present invention 本発明の燃料電池発電装置の概略構成図Schematic configuration diagram of a fuel cell power generator of the present invention 従来の燃料電池発電装置の概略構成図Schematic configuration diagram of a conventional fuel cell power generator

符号の説明Explanation of symbols

１ 回収水タンク
２ 反応オフガス配管
３ 配管
４，４１，４２ ポンプ
５ 電気式脱イオン装置
６ 配管
７ イオン交換樹脂筒
８，２１，２２，３２ 弁
９ 補給水配管
１０ 生成水回収貯留手段
１１ 排気口
１２ 燃料改質手段
１３ 改質用水配管
１４ 電池冷却水循環手段
１５ 水位計
１６ 燃料電池スタック
１７ 電池冷却水配管
１８，１９ 冷却器
２０ 循環配管
２３ 逆止弁
４３，４４ ブロア DESCRIPTION OF SYMBOLS 1 Recovery water tank 2 Reaction off-gas piping 3 Piping 4, 41, 42 Pump 5 Electric deionization device 6 Piping 7 Ion exchange resin cylinder 8, 21, 22, 32 Valve 9 Supply water piping 10 Generated water collection | recovery storage means 11 Exhaust port 12 Fuel reforming means 13 Reforming water pipe 14 Battery cooling water circulation means 15 Water level gauge 16 Fuel cell stack 17 Battery cooling water pipe 18, 19 Cooler 20 Circulation pipe 23 Check valve 43, 44 Blower

Claims (3)

炭化水素系原燃料ガスを水蒸気改質して燃料ガスを得る燃料改質手段と、アノード極に前記燃料ガス、カソード極に酸化剤ガスをそれぞれ導入して電気化学反応により電気エネルギーを発生する燃料電池スタックと、前記燃料電池スタックから排出されるカソード極排ガスおよび前記燃料改質手段から排出される燃焼排ガスから生成水を回収して回収水として貯留する生成水回収貯留手段と、前記燃料電池スタックに冷却水を循環させる電池冷却水循環手段と、水道水を脱イオンして脱イオン水を製造し前記生成水回収貯留手段へ供給するイオン交換樹脂筒と、前記生成水回収貯留手段に貯留した水を純化して前記電池冷却水循環手段に純水を補給する電気式脱イオン装置とを備えた燃料電池発電装置において、
前記電気式脱イオン装置により処理された純水の一部を前記イオン交換樹脂筒へ戻す循環配管と、前記純水の一部を前記循環配管を経由して前記イオン交換樹脂筒へ送水するポンプとを備えたことを特徴とする燃料電池発電装置。 Fuel reforming means for obtaining a fuel gas by steam reforming a hydrocarbon-based raw fuel gas, and a fuel that generates electric energy by an electrochemical reaction by introducing the fuel gas into the anode electrode and the oxidant gas into the cathode electrode, respectively. A battery stack, a generated water recovery and storage means for recovering the generated water from the cathode electrode exhaust gas discharged from the fuel cell stack and the combustion exhaust gas discharged from the fuel reforming means and storing it as recovered water; and the fuel cell stack Battery cooling water circulating means for circulating cooling water, ion-exchange resin cylinders that deionize tap water to produce deionized water and supply the generated water collecting and storing means, and water stored in the generated water collecting and storing means In a fuel cell power generator comprising an electric deionizer for purifying the battery cooling water circulation means and replenishing the battery cooling water circulation means with
A circulation pipe for returning a part of pure water treated by the electric deionizer to the ion exchange resin cylinder, and a pump for feeding a part of the pure water to the ion exchange resin cylinder via the circulation pipe And a fuel cell power generator. 請求項１に記載の燃料電池発電装置において、前記循環配管は遮断弁を備えたことを特徴とする燃料電池発電装置。   2. The fuel cell power generator according to claim 1, wherein the circulation pipe includes a shutoff valve. 請求項１に記載の燃料電池発電装置において、前記循環配管は流量調節弁と逆止弁とを直列に配置して備えたことを特徴とする燃料電池発電装置。
2. The fuel cell power generator according to claim 1, wherein the circulation pipe includes a flow rate adjusting valve and a check valve arranged in series.
JP2007250464A 2007-09-27 2007-09-27 Fuel cell power generation apparatus Pending JP2009081084A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009231155A (en) * 2008-03-25 2009-10-08 Aisin Seiki Co Ltd Water purification device for fuel cell system
JP2010231703A (en) * 2009-03-30 2010-10-14 Fujitsu Fsas Inc Remote work process management system
JP2014038854A (en) * 2009-07-08 2014-02-27 Panasonic Corp Fuel cell system
CN110504463A (en) * 2018-05-16 2019-11-26 嘉兴市兆业新能源技术有限公司 A kind of fuel cell unit with water circulation system

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JPH09306523A (en) * 1996-05-08 1997-11-28 Tokyo Gas Co Ltd Water cooled fuel cell power generating system
JP2001176535A (en) * 1999-12-20 2001-06-29 Fuji Electric Co Ltd Water treatment device of fuel cell power generator and its operating method
JP2005243623A (en) * 2004-01-30 2005-09-08 Matsushita Electric Ind Co Ltd Fuel cell system
WO2006088053A1 (en) * 2005-02-18 2006-08-24 Matsushita Electric Industrial Co., Ltd. Fuel cell system and method of operating the same
JP2007157544A (en) * 2005-12-06 2007-06-21 Nissan Motor Co Ltd Fuel cell system

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Publication number Priority date Publication date Assignee Title
JPH09306523A (en) * 1996-05-08 1997-11-28 Tokyo Gas Co Ltd Water cooled fuel cell power generating system
JP2001176535A (en) * 1999-12-20 2001-06-29 Fuji Electric Co Ltd Water treatment device of fuel cell power generator and its operating method
JP2005243623A (en) * 2004-01-30 2005-09-08 Matsushita Electric Ind Co Ltd Fuel cell system
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JP2007157544A (en) * 2005-12-06 2007-06-21 Nissan Motor Co Ltd Fuel cell system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009231155A (en) * 2008-03-25 2009-10-08 Aisin Seiki Co Ltd Water purification device for fuel cell system
JP2010231703A (en) * 2009-03-30 2010-10-14 Fujitsu Fsas Inc Remote work process management system
JP2014038854A (en) * 2009-07-08 2014-02-27 Panasonic Corp Fuel cell system
CN110504463A (en) * 2018-05-16 2019-11-26 嘉兴市兆业新能源技术有限公司 A kind of fuel cell unit with water circulation system

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