JPH0963612A - Water-cooled fuel cell power generating apparatus - Google Patents
Water-cooled fuel cell power generating apparatusInfo
- Publication number
- JPH0963612A JPH0963612A JP7210305A JP21030595A JPH0963612A JP H0963612 A JPH0963612 A JP H0963612A JP 7210305 A JP7210305 A JP 7210305A JP 21030595 A JP21030595 A JP 21030595A JP H0963612 A JPH0963612 A JP H0963612A
- Authority
- JP
- Japan
- Prior art keywords
- water
- fuel cell
- cooling
- mixed
- cell power
- 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.)
- Pending
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】この発明は、冷却水循環系統，冷
却水補給装置を備えた水冷式燃料電池発電装置、ことに
殺菌機能を有する冷却水補給装置を備えた水冷式燃料電
池発電装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-cooled fuel cell power generator equipped with a cooling water circulation system and a cooling water supply device, and more particularly to a water cooled fuel cell power generator equipped with a cooling water supply device having a sterilizing function.
【０００２】[0002]
【従来の技術】図２は従来の水冷式燃料電池発電装置の
要部を示す構成図であり、りん酸形燃料電池１はりん酸
を保持するマトリックスを挟んで燃料電極および空気電
極を配した単位セルの積層体からなり、燃料電極に燃料
改質装置２で生成した燃料ガス２Ｆを供給し，空気電極
に空気を供給することにより、電気化学反応に基づいて
発電が行われる。また、燃料電池１の電気化学反応は全
体として発熱反応であり、燃料電池１の温度を例えば１
９０°C 程度の運転温度に保持して効率の良い発電運転
を行うためには燃料電池の冷却が必要になる。そこで、
燃料電池１には純水を冷却水６とする冷却板３が積層さ
れ、この冷却板３に冷却水６を循環するために、水蒸気
分離器１１および循環ポンプ１２，および必要に応じて
設けられる図示しない冷却用の熱交換器などを含む冷却
水循環系統１０が連結される。2. Description of the Related Art FIG. 2 is a block diagram showing a main part of a conventional water-cooled fuel cell power generator. In a phosphoric acid fuel cell 1, a fuel electrode and an air electrode are arranged with a matrix holding phosphoric acid interposed therebetween. It is composed of a stack of unit cells, and the fuel gas 2F generated by the fuel reforming device 2 is supplied to the fuel electrode and the air is supplied to the air electrode, so that power generation is performed based on the electrochemical reaction. Moreover, the electrochemical reaction of the fuel cell 1 is an exothermic reaction as a whole, and the temperature of the fuel cell 1 is
The fuel cell must be cooled in order to perform efficient power generation operation while maintaining the operating temperature at about 90 ° C. Therefore,
A cooling plate 3 having pure water as cooling water 6 is laminated on the fuel cell 1. In order to circulate the cooling water 6 through the cooling plate 3, a water vapor separator 11 and a circulation pump 12 and, if necessary, are provided. A cooling water circulation system 10 including a heat exchanger for cooling (not shown) and the like is connected.
【０００３】原燃料を水素リッチな燃料ガスに改質する
ためには、原燃料としてのメタンガス等に改質用スチー
ムを加えて水とメタンとの反応を触媒で促進して行う燃
料改質装置２が用いられ、改質用スチームには水蒸気分
離器１２で分離した水蒸気の一部が利用される。したが
って、冷却水循環系統１０には燃料の改質に使用した水
蒸気量に対応して純水６Ｐを補給する必要がある。この
純水６Ｐにはイオン交換式の純水装置３１およびポンプ
３２を含む水処理系統３０で不純物を除去したイオン交
換水が用いられるが、燃料電池１の空気電極から排出さ
れる空気オフガス７中に含まれる水分（発電生成水）や
燃料改質装置２のバーナの燃焼排ガス８中に含まれる水
分（燃焼生成水）を凝縮した回収水を用いた方が水道水
よりも不純物が少なく、その分イオン交換式の純水装置
の負荷を軽くできるので、燃料電池発電装置には生成水
回収系統２０と水処理系統３０とで構成される冷却水補
給装置が付加される。In order to reform a raw fuel into a hydrogen-rich fuel gas, a fuel reformer for adding a reforming steam to methane gas or the like as a raw fuel to promote a reaction between water and methane with a catalyst. 2 is used, and a part of the steam separated by the steam separator 12 is used for the reforming steam. Therefore, it is necessary to supply the pure water 6P to the cooling water circulation system 10 in accordance with the amount of steam used for reforming the fuel. For this pure water 6P, ion-exchanged water from which impurities have been removed in a water treatment system 30 including an ion-exchange type pure water device 31 and a pump 32 is used. In the air-off gas 7 discharged from the air electrode of the fuel cell 1. The amount of impurities contained in the recovered water, which is obtained by condensing the water contained in the water (generated water generated) and the water contained in the combustion exhaust gas 8 of the burner of the fuel reformer 2 (combustion generated water) has less impurities than tap water. Since the load of the ion-exchange type deionized water device can be reduced, a cooling water replenishing device including a produced water recovery system 20 and a water treatment system 30 is added to the fuel cell power generation device.
【０００４】生成水回収系統２０は、例えば直接式熱交
換器部および回収水タンク部を内包した生成水回収塔２
１と、回収水タンク中の回収水に水道水を加えた混合水
２６を循環ポンプ２２，冷却用の熱交換器２３，および
ノズル２４を介して直接式熱交換器部の上方から散布す
る混合水循環系２５とで構成され、ノズルから散布され
る低温の混合水と空気オフガス７，燃焼排ガス８とが向
流接触して生成水が回収される。The produced water recovery system 20 is, for example, a produced water recovery tower 2 including a direct heat exchanger section and a recovered water tank section.
1 and the mixed water 26 in which tap water is added to the recovered water in the recovered water tank is sprayed from above the direct heat exchanger section through the circulation pump 22, the heat exchanger 23 for cooling, and the nozzle 24. The water circulation system 25 and the low-temperature mixed water sprayed from the nozzles come into countercurrent contact with the air off-gas 7 and the combustion exhaust gas 8 to recover the produced water.
【０００５】また、生成水回収塔２１内に貯留した混合
水２６の一部はポンプ２２を介してイオン交換式の純水
装置３１を含む水処理系統３０に送られ、不純物を除去
した純水として冷却水循環系統１０に供給されて冷却水
６の不足分を補償するとともに、回収水タンクの水位の
低下は図示しない水道水供給系から水道水を供給するこ
とにより一定水位の水バランスが保持される。A part of the mixed water 26 stored in the produced water recovery tower 21 is sent to a water treatment system 30 including an ion-exchange type deionized water device 31 via a pump 22 to remove impurities from the deionized water. Is supplied to the cooling water circulation system 10 to compensate for the shortage of the cooling water 6, and the decrease in the water level of the recovered water tank is maintained by supplying tap water from a tap water supply system (not shown) to maintain a constant water level. It
【０００６】[0006]
【発明が解決しようとする課題】従来の生成水回収系統
２０において、運転初期には生成水回収塔２１内の混合
水タンクは空状態であり、先ず水道水による水張りを行
った後運転が開始される。また、運転中に混合水タンク
内の水位が低下した場合にも水道水の補給が行われる。
これらの水道水は通常塩素殺菌によりバクテリアなどの
細菌（微生物）の繁殖が抑制されているが、不純物とし
て微量のバクテリア等の細菌を含んでいる。一方、２０
０°C を越える高温雰囲気の燃料改質器バーナ，および
燃料電池を通過して生成水回収塔２１に流入するオフガ
ス７および８は無菌状態であり、生成水回収塔で凝縮し
て得られる回収水もほぼ無菌状態に保持されるため殺菌
能力がない。さらに、混合水タンク内の混合水温度は通
常４０〜６０°C に保持されているため微生物が繁殖し
易い条件になる。このため、生成水回収塔内に補給され
た水道水中の微生物が回収水タンク内で加速度的に増殖
し、これがポンプ２２によりイオン交換式純水装置３１
に送り込まれて捕捉されるため、イオン交換式純水装置
３１が閉塞状態になり、これが原因で水蒸気分離器１１
への純水の補給が不足して水バランスが崩れ、燃料改質
装置２や燃料電池１に運転障害が発生するとともに、イ
オン交換式純水装置３１の保守間隔が極端に短くなって
保守の煩雑化を招くという問題が発生する。In the conventional produced water recovery system 20, the mixed water tank in the produced water recovery tower 21 is empty at the beginning of the operation, and the operation is started after first filling with tap water. To be done. Also, when the water level in the mixed water tank drops during operation, tap water is replenished.
Propagation of bacteria (microorganisms) such as bacteria is usually suppressed by chlorine sterilization in these tap waters, but trace amounts of bacteria such as bacteria are contained as impurities. On the other hand, 20
Off-gas 7 and 8 flowing into the produced water recovery tower 21 after passing through the fuel reformer burner in a high temperature atmosphere exceeding 0 ° C and the fuel cell are aseptic and are recovered by condensation in the produced water recovery tower. Since water is also kept in a nearly sterile state, it has no sterilizing ability. Furthermore, since the temperature of the mixed water in the mixed water tank is usually maintained at 40 to 60 ° C, it becomes a condition that microorganisms can easily propagate. For this reason, the microorganisms in the tap water replenished in the produced water recovery tower proliferate at an accelerated rate in the recovered water tank, and this is pumped by the ion exchange type pure water device 31.
The ion exchange type deionized water device 31 is blocked because it is sent to the water vapor separator 11 and is trapped.
Insufficient supply of pure water to the water causes a loss of water balance, which causes an operation failure in the fuel reforming device 2 and the fuel cell 1, and the maintenance interval of the ion exchange type pure water device 31 is extremely shortened. There is a problem of complication.
【０００７】また、一旦回収水タンク内に多量に増殖し
た微生物は薬液洗浄などにより除去するしかなく、その
実施に際しては燃料電池の運転を一時停止し、燃料電池
１や燃料改質器２に連通する配管を遮断した状態で薬剤
を注入して一定時間循環または放置して殺菌を行った
後、水道水で洗浄しつつ系外に排出される洗浄水のｐＨ
を監視し、中和を確認した上で水道水による水張りを行
うという煩雑な操作が必要であり、保守作業が煩雑化し
て燃料電池発電装置のランニングコストの上昇を招くと
いう問題がある。また、洗浄作業の終了後再び水道水に
よる水張りを行うことにより、微生物の増殖環境を作っ
てしまうという問題がある。[0007] In addition, the microorganisms that have once grown in a large amount in the recovered water tank have to be removed by chemical cleaning or the like. In that case, the operation of the fuel cell is temporarily stopped and the fuel cell 1 and the fuel reformer 2 are connected. The pH of the washing water discharged outside the system while washing with tap water after sterilizing by injecting chemicals with the pipes blocked and circulating or standing for a certain period of time.
It is necessary to perform a complicated operation of monitoring the temperature and confirming neutralization before filling water with tap water, and there is a problem that maintenance work becomes complicated and the running cost of the fuel cell power generator increases. In addition, there is a problem in that a microbial growth environment is created by performing water filling with tap water again after the cleaning work is completed.
【０００８】この発明の目的は、生成水回収系統や水処
理系統の薬剤洗浄などの煩雑な保守作業を必要とせず、
細菌の滅菌が可能な水冷式燃料電池発電装置を提供する
ことにある。The object of the present invention is to eliminate the need for complicated maintenance work such as cleaning chemicals in the produced water recovery system and the water treatment system,
An object of the present invention is to provide a water-cooled fuel cell power generator capable of sterilizing bacteria.
【０００９】[0009]
【課題を解決するための手段】前述の目的を達成するた
めに、請求項１に記載の発明は、複数の単位セルと冷却
板との積層体からなる燃料電池が、前記冷却板の冷却パ
イプに冷却水を循環する冷却水循環系統と、前記燃料電
池および燃料改質装置の排ガス中の水蒸気を凝縮して回
収し水道水を添加した混合水として貯留する生成水回収
系統、および前記混合水を純水に変換して前記冷却水循
環系統に供給する水処理系統からなる冷却水補給装置と
を備えた水冷式燃料電池発電装置において、前記混合水
中含まれる微生物を紫外線の照射によって殺菌する紫外
線殺菌装置を前記冷却水補給装置内に設ける。In order to achieve the above-mentioned object, the invention according to claim 1 provides a fuel cell comprising a laminate of a plurality of unit cells and cooling plates, and a cooling pipe for the cooling plates. A cooling water circulation system that circulates cooling water, a produced water recovery system that condenses and recovers water vapor in the exhaust gas of the fuel cell and the fuel reformer, and stores it as mixed water to which tap water is added, and the mixed water. In a water-cooled fuel cell power generator having a cooling water replenishing device including a water treatment system that converts the water into pure water and supplies it to the cooling water circulation system, an ultraviolet sterilizer for sterilizing microorganisms contained in the mixed water by irradiation of ultraviolet rays. Is provided in the cooling water supply device.
【００１０】また、請求項２に記載の発明は、複数の単
位セルと冷却板との積層体からなる燃料電池が、前記冷
却板の冷却パイプに冷却水を循環する冷却水循環系統
と、前記燃料電池および燃料改質装置の排ガス中の水蒸
気を凝縮して回収し水道水を添加した混合水として貯留
する生成水回収系統、および前記混合水を純水に変換し
て前記冷却水循環系統に供給する水処理系統からなる冷
却水補給装置とを備えた水冷式燃料電池発電装置におい
て、前記混合水中含まれる微生物を紫外線の照射によっ
て殺菌する紫外線殺菌装置と、表面に抗菌性金属膜を添
着した粒状吸着剤の充填槽からなる抗菌性フィルターと
を前記冷却水補給装置内の互いに異なる位置に設ける。Further, in a second aspect of the present invention, a fuel cell comprising a stack of a plurality of unit cells and a cooling plate has a cooling water circulation system for circulating cooling water in a cooling pipe of the cooling plate, and the fuel. Generated water recovery system that condenses and collects water vapor in the exhaust gas of the battery and the fuel reformer and stores it as mixed water to which tap water is added, and the mixed water is converted to pure water and supplied to the cooling water circulation system. In a water-cooled fuel cell power generator equipped with a cooling water replenishing device consisting of a water treatment system, an ultraviolet sterilizer for sterilizing microorganisms contained in the mixed water by irradiation of ultraviolet rays, and granular adsorption with an antibacterial metal film attached to the surface An antibacterial filter composed of a filling tank for the agent is provided at different positions in the cooling water supply device.
【００１１】さらに、請求項３に記載の発明は、請求項
２記載の水冷式燃料電池発電装置において、紫外線殺菌
装置および抗菌性フィルターを設ける冷却水補給装置内
の互いに異なる位置を、生成水回収系統に設けられて排
ガスと混合水を向流接触させる混合水循環系、水処理系
統の上流側、および水道水の給水口の内、少なくとも２
か所以上とすると良い。Further, in the invention described in claim 3, in the water-cooled fuel cell power generator according to claim 2, the produced water is collected at different positions in the cooling water supply device provided with the ultraviolet sterilizer and the antibacterial filter. At least 2 of the mixed water circulation system that is provided in the system to bring the exhaust gas and the mixed water into countercurrent contact, the upstream side of the water treatment system, and the tap water supply port
It should be more than one place.
【００１２】さらにまた、請求項４に記載の発明は、請
求項１または請求項２記載の水冷式燃料電池発電装置に
おいて、冷却水補給装置内の混合水配管の少なくとも一
部を銅系の金属配管とすると良い。Furthermore, the invention according to claim 4 is the water-cooled fuel cell power generator according to claim 1 or 2, wherein at least a part of the mixed water pipe in the cooling water supply device is made of copper-based metal. Plumbing is good.
【００１３】[0013]
【作用】請求項１に記載の発明では、混合水が紫外線殺
菌装置を通過する際、混合水中の微生物が殺菌され、そ
の繁殖が阻止されるので、回収水に水道水を混合するこ
とにより生成水回収系統に持ち込まれる微生物の増殖の
抑制が可能になり、したがって、イオン交換式純水装置
の閉塞障害が排除され、イオン交換樹脂の交換インター
バルが延長されるとともに、薬液洗浄などを必要とせず
に冷却水循環系統に純水が長時間安定供給される。In the invention described in claim 1, when the mixed water passes through the ultraviolet sterilizer, microorganisms in the mixed water are sterilized and their growth is prevented. Therefore, the recovered water is produced by mixing tap water. It is possible to suppress the growth of microorganisms brought into the water recovery system, thus eliminating the blockage failure of the ion exchange type pure water device, extending the ion exchange resin exchange interval, and eliminating the need for chemical cleaning. In addition, pure water is stably supplied to the cooling water circulation system for a long time.
【００１４】請求項２に記載の発明では、混合水が抗菌
性フィルターを通過する際、粒状吸着剤が混合水中の微
生物をその吸着力により捕捉すると同時に、抗菌性金属
膜がその抗菌性により捕捉した微生物の増殖を阻止する
ので、抗菌性フィルターを通過した混合水はその微生物
量が低減される。したがって、微生物のろ過作用を持た
ない紫外線殺菌装置に微生物の捕捉ろ過作用を有する抗
菌性フィルターを付加することにより、より強固な微生
物の増殖防止作用およびイオン交換式純水装置の閉塞防
止作用が得られる。According to the second aspect of the present invention, when the mixed water passes through the antibacterial filter, the particulate adsorbent captures the microorganisms in the mixed water by its adsorptive power, and at the same time, the antibacterial metal film captures it by its antibacterial property. Since the growth of the microorganisms is prevented, the amount of the microorganisms in the mixed water that has passed through the antibacterial filter is reduced. Therefore, by adding an antibacterial filter having an action of capturing and filtering microorganisms to an ultraviolet sterilizer that does not have an action of filtering microorganisms, a stronger action of preventing the growth of microorganisms and an action of preventing clogging of the ion exchange type pure water device can be obtained. To be
【００１５】請求項３に記載の発明では、請求項２記載
の水冷式燃料電池発電装置において、紫外線殺菌装置，
抗菌性フィルターのいずれかを混合水循環系に設けれ
ば、生成水回収塔内に貯留された混合水が抗菌性フィル
ターを通って繰り返し殺菌，ろ過され、成水回収塔内で
の微生物の増殖が防止される。また、水処理系統の上流
側に設けた場合には、イオン交換式純水装置への微生物
の侵入が直接阻止される。さらに、生成水回収塔への水
道水の給水口に設ければ、生成水回収塔への微生物の侵
入が直接阻止される。したがって、２か所以上に紫外線
殺菌装置，抗菌性フィルターを分散配置すれば、その殺
菌作用およびろ過作用の相乗作用により、イオン交換式
純水装置の閉塞障害がほぼ完全に排除され、イオン交換
樹脂の交換インターバルがより延長され、薬液洗浄を必
要とせずに冷却水循環系統に純水が長時間安定供給され
る。According to a third aspect of the present invention, in the water-cooled fuel cell power generator according to the second aspect, an ultraviolet sterilization device,
If any of the antibacterial filters is installed in the mixed water circulation system, the mixed water stored in the produced water recovery tower is repeatedly sterilized and filtered through the antibacterial filter, and the growth of microorganisms in the produced water recovery tower is prevented. To be prevented. Further, when it is provided on the upstream side of the water treatment system, invasion of microorganisms into the ion exchange type pure water device is directly blocked. Furthermore, if the tap water supply port to the produced water recovery tower is provided, invasion of microorganisms into the produced water recovery tower is directly prevented. Therefore, if the ultraviolet sterilizer and the antibacterial filter are dispersed and arranged in two or more places, the synergistic action of the sterilizing action and the filtering action can almost completely eliminate the blockage obstacle of the ion exchange type pure water device, and the ion exchange resin. The replacement interval is further extended, and pure water is stably supplied to the cooling water circulation system for a long time without requiring chemical cleaning.
【００１６】請求項４に記載の発明では、請求項１また
は請求項２記載の水冷式燃料電池発電装置において、冷
却水補給装置内の混合水配管の少なくとも一部を銅系の
金属配管としたことにより、銅の持つ抗菌性を活用して
混合水配管内での微生物の増殖が阻止されることにな
り、紫外線殺菌装置，抗菌性フィルターの殺菌作用およ
び抗菌ろ過作用と併せて混合水の無菌化が一層促進され
る。According to a fourth aspect of the present invention, in the water-cooled fuel cell power generator according to the first or second aspect, at least a part of the mixed water pipe in the cooling water replenishing device is a copper metal pipe. As a result, the antibacterial properties of copper are utilized to prevent the growth of microorganisms in the mixed water pipes, and the sterilization of the mixed water is accompanied by the ultraviolet sterilizer, the bactericidal action of the antibacterial filter and the antibacterial action. Is further promoted.
【００１７】[0017]
【実施例】以下この発明を実施例に基づいて説明する。
なお、従来例と同じ参照符号を付けた部材は従来例のそ
れと同じ機能をもつので、その説明を省略する。図１は
この発明の水冷式燃料電池発電装置の一実施例を示す簡
略化したシステム構成図である。図において、実施例で
は生成水回収系統２０の混合水循環系２５に抗菌性フィ
ルター４２を設けるとともに、水処理系統３０の純水装
置３１の上流側には紫外線殺菌装置４１を設けた。抗菌
性フィルター４２には、粒状吸着剤としての活性炭の表
面に銀，銅などの抗菌性金属を活性炭の吸着力を大幅に
阻害しない範囲で添着した抗菌性活性炭の充填槽を用い
た。EXAMPLES The present invention will be described below based on examples.
Since the members having the same reference numerals as those of the conventional example have the same functions as those of the conventional example, the description thereof will be omitted. FIG. 1 is a simplified system configuration diagram showing an embodiment of a water-cooled fuel cell power generator of the present invention. In the figure, in the embodiment, an antibacterial filter 42 is provided in the mixed water circulation system 25 of the produced water recovery system 20, and an ultraviolet sterilizer 41 is provided upstream of the pure water device 31 in the water treatment system 30. As the antibacterial filter 42, an antibacterial activated carbon filling tank was used in which an antibacterial metal such as silver or copper was attached to the surface of the activated carbon as a granular adsorbent within a range not significantly impairing the adsorption force of the activated carbon.
【００１８】実施例では、生成水回収塔２１内に貯留さ
れた混合水２６が抗菌性フィルター４２を通って繰り返
しろ過されるので、水張り時に侵入した微生物はもとよ
り、運転中水道水の補給によって生成水回収塔内に侵入
する微生物も、粒状活性炭の吸着力により捕捉されると
同時に、抗菌性金属膜がその抗菌性によって捕捉した微
生物の増殖を阻止するので、抗菌性フィルターを通過し
た混合水はその微生物量が徐々に低減され、かつその他
の不純物も活性炭に吸着され、不純物量や微生物量が低
減された混合水２６が紫外線殺菌装置４１を介して水処
理系統３０に供給される。In the embodiment, since the mixed water 26 stored in the produced water recovery tower 21 is repeatedly filtered through the antibacterial filter 42, it is produced not only by microorganisms invading at the time of water filling but also by supplying tap water during operation. Microorganisms that enter the water recovery tower are also captured by the adsorptive power of the granular activated carbon, and at the same time, the antibacterial metal membrane blocks the growth of the microorganisms that are captured due to their antibacterial properties, so the mixed water that has passed through the antibacterial filter is The mixed water 26 in which the amount of microorganisms is gradually reduced and other impurities are also adsorbed by the activated carbon and the amount of impurities and the amount of microorganisms is reduced is supplied to the water treatment system 30 via the ultraviolet sterilizer 41.
【００１９】また、紫外線殺菌装置４１では混合水２６
中に残存する微生物が紫外線によって殺菌され、殆ど無
菌状態に近い混合水がイオン交換式純水装置３１に供給
される。したがって、従来例において生成水回収塔２１
内で加速度的に増殖した微生物により、イオン交換式純
水装置３１が閉塞状態になり、これが原因で水蒸気分離
器１１への純水の補給が不足して水バランスが崩れ、燃
料改質装置２や燃料電池１に運転障害が発生するという
事態はほぼ完全に回避され、イオン交換式純水装置３１
の保守間隔が従来例に比べて大幅に延長される。なお、
イオン交換式純水装置３１を介して冷却水循環系１０に
供給される純水２６Ｐは、冷却水循環系１０内で高温の
冷却水６と混合される際高温殺菌れれるので、冷却水循
環系１０ないは完全な滅菌状態に保持される。In the ultraviolet sterilizer 41, the mixed water 26
Microorganisms remaining therein are sterilized by ultraviolet rays, and mixed water that is almost aseptic is supplied to the ion exchange-type pure water device 31. Therefore, in the conventional example, the produced water recovery tower 21
Due to the microorganisms that have proliferated at an accelerated rate in the water, the ion-exchange-type pure water device 31 is blocked, and due to this, the pure water supply to the water vapor separator 11 is insufficient and the water balance is disrupted. A situation in which an operation failure occurs in the fuel cell 1 or the fuel cell 1 is almost completely avoided, and the ion exchange type pure water device 31
The maintenance interval is greatly extended compared to the conventional example. In addition,
The pure water 26P supplied to the cooling water circulation system 10 via the ion exchange type deionized water device 31 is sterilized at high temperature when mixed with the high temperature cooling water 6 in the cooling water circulation system 10, so that there is no cooling water circulation system 10. Are kept completely sterile.
【００２０】また、生成水回収塔２１の薬液洗浄も、抗
菌性フィルターの抗菌性活性炭を定期的に交換すること
によって不要になり、保守作業が省力化されて運転コス
トの低減効果が得られるとともに、薬液洗浄を行うため
に必要とした燃料電池発電装置の運転停止も回避できる
ことになり、燃料電池発電装置を長期連続運転すること
が可能になった。Further, the chemical cleaning of the produced water recovery tower 21 is also unnecessary by regularly exchanging the antibacterial activated carbon of the antibacterial filter, and the maintenance work is labor-saving and the operating cost can be reduced. As a result, it is possible to avoid the operation stop of the fuel cell power generation device required for performing the chemical cleaning, and it is possible to continuously operate the fuel cell power generation device for a long period of time.
【００２１】なお、冷却水補給装置に侵入する微生物量
が比較的少ない場合、紫外線殺菌装置４１のみを設けて
その殺菌力によって微生物の増殖を防ぐよう構成すれ
ば、装置の構成を簡素化できる利点が得られる。また、
紫外線殺菌装置４１および抗菌性フィルター４２，の設
置位置を入れ換えても前述の実施例と同様な作用，効果
が得られる。さらに、紫外線殺菌装置４１，抗菌性フィ
ルター４２のいずれかを生成水回収塔２１への水道水の
給水口に設けてもよく、水張り時および水道水補給時に
冷却水補給装置に侵入する微生物量を低減する効果が得
られる。When the amount of microorganisms invading the cooling water replenishing device is relatively small, it is possible to simplify the structure of the device by providing only the ultraviolet sterilization device 41 and preventing the growth of microorganisms by its sterilizing power. Is obtained. Also,
Even if the installation positions of the ultraviolet sterilizer 41 and the antibacterial filter 42 are exchanged, the same operation and effect as in the above-described embodiment can be obtained. Furthermore, either the ultraviolet sterilizer 41 or the antibacterial filter 42 may be provided at the tap water supply port to the produced water recovery tower 21, and the amount of microorganisms that enter the cooling water supply device at the time of water filling and tap water replenishment can be adjusted. The effect of reducing is obtained.
【００２２】一方、紫外線殺菌装置４１または抗菌性フ
ィルター４２が設置される混合水循環系２５の配管，水
処理系統３０の配管，および水道水供給口の配管など
に、抗菌性を有する銅系配管を用いれば、配管内での微
生物の増殖も阻止されることになり、紫外線殺菌装置，
抗菌性フィルターの殺菌作用および抗菌ろ過作用と併せ
て混合水の無菌化が可能になる。On the other hand, copper pipes having antibacterial properties are used for the pipe of the mixed water circulation system 25 in which the ultraviolet sterilizer 41 or the antibacterial filter 42 is installed, the pipe of the water treatment system 30, the pipe of the tap water supply port, etc. If it is used, the growth of microorganisms in the pipe will also be blocked, and the ultraviolet sterilizer,
It becomes possible to sterilize the mixed water together with the bactericidal action and antibacterial filtration action of the antibacterial filter.
【００２３】[0023]
【発明の効果】この発明の水冷式燃料電池発電装置は前
述のように、冷却水補給装置に水道水を補給することに
より混合水中に侵入するバクテリアなどの微生物を、紫
外線殺菌装置を設けて殺菌するよう構成した。その結
果、増殖した微生物によってイオン交換式純水装置が閉
塞し、冷却水循環系への純水の補給が困難になるなどの
トラブルが回避されて燃料電池発電装置の長期連続運転
が可能になるとともに、イオン交換樹脂の交換間隔の延
長，および煩雑な薬液洗浄などの保守作業の排除によっ
て運転コストも低減されるので、燃料電池発電装置の運
転停止や煩雑な保守作業を必要とせずに各水系統の微生
物の増殖を抑制できる、低運転コストで長期信頼性の高
い水冷式燃料電池発電装置を提供することができる。As described above, the water-cooled fuel cell power generator of the present invention sterilizes microorganisms such as bacteria that enter the mixed water by supplying tap water to the cooling water replenishing device by providing an ultraviolet sterilizer. Configured to do so. As a result, the grown microorganisms block the ion exchange type deionized water device, and troubles such as difficulty in replenishing deionized water to the cooling water circulation system are avoided and a long-term continuous operation of the fuel cell power generation device becomes possible. The operating cost is also reduced by extending the ion-exchange resin replacement interval and eliminating maintenance work such as complicated chemical cleaning, so each water system can be operated without the need to shut down the fuel cell power generator or perform any complicated maintenance work. It is possible to provide a water-cooled fuel cell power generation device that can suppress the growth of microorganisms, and that has a low operating cost and high long-term reliability.
【００２４】また、紫外線殺菌装置と抗菌性活性炭の充
填槽などからなる抗菌性フィルターとを併用するよう構
成すれば、紫外線殺菌装置の殺菌作用と抗菌性フィルタ
ーの微生物捕捉，増殖防止作用との相乗効果により、混
合水をほぼ無菌状態に保持して純水を冷却水循環系に安
定供給できる冷却水補給装置を備えた燃料電池発電装置
を提供できる。さらに、紫外線殺菌装置および抗菌性フ
ィルターを混合水循環系，水処理系統の上流側，および
水道水の給水口，の内少なくとも２か所以上に分散配置
すれば、冷却水補給装置内の要所で微生物を殺菌，抗菌
ろ過して混合水を無菌化できる利点が得られる。さらに
また、混合水流路の配管に銅系金属配管を用いてその抗
菌作用を利用すれば、より高い微生物の増殖防止効果が
得られる。Further, if the ultraviolet sterilizer and the antibacterial filter comprising an antibacterial activated carbon filling tank are used in combination, the sterilizing action of the ultraviolet sterilizer and the microbial trapping and growth preventing action of the antibacterial filter are synergistic. Due to the effect, it is possible to provide a fuel cell power generator equipped with a cooling water replenishing device capable of maintaining the mixed water in a substantially sterile state and stably supplying pure water to the cooling water circulation system. Further, if the ultraviolet sterilizer and the antibacterial filter are dispersed and arranged at least at two or more of the mixed water circulation system, the upstream side of the water treatment system, and the tap water supply port, they can be installed at the important points in the cooling water supply device. The advantage is that the mixed water can be sterilized by sterilizing microorganisms and antibacterial filtration. Furthermore, if a copper-based metal pipe is used for the pipe of the mixed water flow path and its antibacterial action is utilized, a higher effect of preventing the growth of microorganisms can be obtained.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の水冷式燃料電池発電装置の一実施例
を示す簡略化したシステム構成図FIG. 1 is a simplified system configuration diagram showing an embodiment of a water-cooled fuel cell power generator of the present invention.
【図２】従来の水冷式燃料電池発電装置の要部を示す構
成図FIG. 2 is a configuration diagram showing a main part of a conventional water-cooled fuel cell power generator.
１ 燃料電池 ２ 燃料改質装置 ３ 冷却板 ６ 冷却水 ６Ｐ 純水 ７ 空気オフガス ８ 燃焼排ガス １０ 冷却水循環系統 １１ 水蒸気分離器 １２ ポンプ ２０ 生成水回収系統 ２１ 生成水回収塔 ２２ ポンプ ２３ 熱交換器 ２４ ノズル ２５ 混合水循環系 ２６ 混合水 ２６Ｐ 純水 ３０ 水処理系統 ３１ イオン交換式純水装置 ３２ ポンプ ４１ 紫外線殺菌装置 ４２ 抗菌性フィルター 1 Fuel Cell 2 Fuel Reforming Device 3 Cooling Plate 6 Cooling Water 6P Pure Water 7 Air Off Gas 8 Combustion Exhaust Gas 10 Cooling Water Circulation System 11 Steam Separator 12 Pump 20 Generated Water Recovery System 21 Generated Water Recovery Tower 22 Pump 23 Heat Exchanger 24 Nozzle 25 Mixed water circulation system 26 Mixed water 26P Pure water 30 Water treatment system 31 Ion exchange type pure water device 32 Pump 41 UV sterilizer 42 Antibacterial filter
───────────────────────────────────────────────────── フロントページの続き (72)発明者 池田 元一 神奈川県逗子市久木２丁目６番Ｂ９号 (72)発明者 岩佐 信弘 大阪府岸和田市葛城町910番55号 (72)発明者 市橋 達也 愛知県名古屋市港区金川町１丁目27番、金 川社宅Ａ−106号 (72)発明者 村上 隆 神奈川県川崎市川崎区田辺新田１番１号 富士電機株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Motoichi Ikeda 2-6 B9, Hisagi, Zushi City, Kanagawa Prefecture (72) Nobuhiro Iwasa 910-55, Katsuragi Town, Kishiwada City, Osaka Prefecture (72) Inventor Tatsuya Ichihashi 1-27 Kanagawa-cho, Minato-ku, Nagoya-shi, Aichi Prefecture, A-106, Kanagawa company house (72) Inventor Takashi Murakami 1-1, Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd.
Claims (4)
る燃料電池が、前記冷却板の冷却パイプに冷却水を循環
する冷却水循環系統と、前記燃料電池および燃料改質装
置の排ガス中の水蒸気を凝縮して回収し水道水を添加し
た混合水として貯留する生成水回収系統、および前記混
合水を純水に変換して前記冷却水循環系統に供給する水
処理系統からなる冷却水補給装置とを備えた水冷式燃料
電池発電装置において、前記混合水中含まれる微生物を
紫外線の照射によって殺菌する紫外線殺菌装置を前記冷
却水補給装置内に設けたことを特徴とする水冷式燃料電
池発電装置。1. A fuel cell comprising a stack of a plurality of unit cells and a cooling plate, a cooling water circulation system for circulating cooling water in a cooling pipe of the cooling plate, and exhaust gas of the fuel cell and the fuel reformer. Cooling water replenishing device comprising a generated water recovery system for condensing and recovering the above water vapor and storing it as mixed water to which tap water has been added, and a water treatment system for converting the mixed water into pure water and supplying it to the cooling water circulation system In the water-cooled fuel cell power generator including: a water-cooled fuel cell power generator, wherein an ultraviolet sterilizer for sterilizing microorganisms contained in the mixed water by irradiation of ultraviolet rays is provided in the cooling water supply device.
る燃料電池が、前記冷却板の冷却パイプに冷却水を循環
する冷却水循環系統と、前記燃料電池および燃料改質装
置の排ガス中の水蒸気を凝縮して回収し水道水を添加し
た混合水として貯留する生成水回収系統、および前記混
合水を純水に変換して前記冷却水循環系統に供給する水
処理系統からなる冷却水補給装置とを備えた水冷式燃料
電池発電装置において、前記混合水中含まれる微生物を
紫外線の照射によって殺菌する紫外線殺菌装置と、表面
に抗菌性金属膜を添着した粒状吸着剤の充填槽からなる
抗菌性フィルターとを前記冷却水補給装置内の互いに異
なる位置に設けたことを特徴とする水冷式燃料電池発電
装置。2. A fuel cell comprising a stack of a plurality of unit cells and a cooling plate, a cooling water circulation system for circulating cooling water in a cooling pipe of the cooling plate, and exhaust gas of the fuel cell and the fuel reformer. Cooling water replenishing device comprising a generated water recovery system for condensing and recovering the above water vapor and storing it as mixed water to which tap water has been added, and a water treatment system for converting the mixed water into pure water and supplying it to the cooling water circulation system In a water-cooled fuel cell power generator including: an ultraviolet sterilizer for sterilizing microorganisms contained in the mixed water by irradiation of ultraviolet rays; and an antibacterial filter including a filling tank of a granular adsorbent having an antibacterial metal film attached to the surface thereof. Are provided at different positions in the cooling water replenishing device.
おいて、紫外線殺菌装置および抗菌性フィルターを設け
る冷却水補給装置内の互いに異なる位置が、生成水回収
系統に設けられて排ガスと混合水を向流接触させる混合
水循環系、水処理系統の上流側、および水道水の給水口
の内、少なくとも２か所以上であることを特徴とする水
冷式燃料電池発電装置。3. The water-cooled fuel cell power generator according to claim 2, wherein different positions in a cooling water replenishing device provided with an ultraviolet sterilizer and an antibacterial filter are provided in a produced water recovery system so that exhaust gas and mixed water are provided. A water-cooled fuel cell power generator having at least two locations among a mixed water circulation system that makes countercurrent contact with each other, an upstream side of a water treatment system, and a tap water supply port.
電池発電装置において、冷却水補給装置内の混合水配管
の少なくとも一部が銅系の金属配管であることを特徴と
する水冷式燃料電池発電装置。4. The water-cooled fuel cell power generator according to claim 1, wherein at least a part of the mixed water pipe in the cooling water supply device is a copper-based metal pipe. Fuel cell power generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7210305A JPH0963612A (en) | 1995-08-18 | 1995-08-18 | Water-cooled fuel cell power generating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7210305A JPH0963612A (en) | 1995-08-18 | 1995-08-18 | Water-cooled fuel cell power generating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0963612A true JPH0963612A (en) | 1997-03-07 |
Family
ID=16587214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7210305A Pending JPH0963612A (en) | 1995-08-18 | 1995-08-18 | Water-cooled fuel cell power generating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0963612A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004012292A1 (en) * | 2002-07-30 | 2004-02-05 | Matsushita Electric Industrial Co., Ltd. | Fuel cell generation apparatus |
| US6841281B2 (en) | 2001-03-14 | 2005-01-11 | Nissan Motor Co., Ltd. | Fuel cell system and microorganism inhibiting method |
| JP2007141647A (en) * | 2005-11-18 | 2007-06-07 | Toyota Central Res & Dev Lab Inc | Fuel cell system |
| JP2008135271A (en) * | 2006-11-28 | 2008-06-12 | Kyocera Corp | Fuel cell device |
| US7763388B2 (en) | 2004-01-30 | 2010-07-27 | Panasonic Corporation | Fuel cell system |
| JP2011034975A (en) * | 2010-10-12 | 2011-02-17 | Panasonic Corp | Fuel cell power generating system |
| JP2016189235A (en) * | 2015-03-30 | 2016-11-04 | パナソニックＩｐマネジメント株式会社 | Fuel battery system and operation method for the same |
| DE102015108763A1 (en) | 2015-06-03 | 2016-12-08 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Fuel cell with water decontamination device |
| US11491894B2 (en) * | 2018-05-18 | 2022-11-08 | Anderson Industries, Llc | Vehicle power plant to conserve water |
-
1995
- 1995-08-18 JP JP7210305A patent/JPH0963612A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6841281B2 (en) | 2001-03-14 | 2005-01-11 | Nissan Motor Co., Ltd. | Fuel cell system and microorganism inhibiting method |
| WO2004012292A1 (en) * | 2002-07-30 | 2004-02-05 | Matsushita Electric Industrial Co., Ltd. | Fuel cell generation apparatus |
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