JPH09219208A - Fuel cell power generation plant - Google Patents
Fuel cell power generation plantInfo
- Publication number
- JPH09219208A JPH09219208A JP8022740A JP2274096A JPH09219208A JP H09219208 A JPH09219208 A JP H09219208A JP 8022740 A JP8022740 A JP 8022740A JP 2274096 A JP2274096 A JP 2274096A JP H09219208 A JPH09219208 A JP H09219208A
- Authority
- JP
- Japan
- Prior art keywords
- hot water
- heat exchanger
- fuel
- heating
- fuel cell
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は燃料電池発電プラン
トの改質器に送る液体原燃料をプラントの排熱を用いて
気化させ、経済性を高めるのに好適な燃料電池発電プラ
ントに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell power generation plant suitable for vaporizing a liquid raw fuel to be sent to a reformer of a fuel cell power generation plant by using waste heat of the plant to improve economic efficiency.
【０００２】[0002]
【従来の技術】リン酸型燃料電池で使用される原燃料に
は天然ガス、都市ガス等のメタンを主成分とする気体燃
料あるいは貯蔵に便利なメタノール、液化プロパンガス
等の液体燃料が好んで用いられる。これらの燃料はいず
れも燃料系統で水蒸気と混合され、改質器において水素
リッチガスに改質された後、そこに含まれる一酸化炭素
を二酸化炭素に転化させる一酸化炭素変成器を通して燃
料電池に供給される。2. Description of the Related Art As a raw fuel used in a phosphoric acid fuel cell, a gas fuel containing methane as a main component such as natural gas or city gas, or a liquid fuel such as methanol or liquefied propane gas which is convenient for storage is preferred. Used. All of these fuels are mixed with steam in the fuel system, reformed into hydrogen-rich gas in the reformer, and then supplied to the fuel cell through a carbon monoxide converter that converts the carbon monoxide contained therein to carbon dioxide. To be done.
【０００３】液体燃料の液化プロパンガスを原燃料とし
て用いる燃料電池発電プラントの一例を図５を参照して
説明する。原燃料の液化プロパンガスは液化プロパンガ
ス気化器１の燃料加熱部にあるヒータ２によって加熱さ
れる。ここで得られたプロパンガスは燃料調節弁３で流
量を調節され、燃料ガス管４を通って水添脱硫装置５に
導かれ、さらにエジェクタ６に供給される。An example of a fuel cell power plant using liquid fuel liquefied propane gas as a raw fuel will be described with reference to FIG. The liquefied propane gas of the raw fuel is heated by the heater 2 in the fuel heating section of the liquefied propane gas vaporizer 1. The flow rate of the propane gas obtained here is adjusted by the fuel control valve 3, is guided to the hydrodesulfurization device 5 through the fuel gas pipe 4, and is further supplied to the ejector 6.
【０００４】一方、分離器７から水蒸気管８を通して導
かれる水蒸気がエジェクタ６に供給されており、プロパ
ンガスにこの水蒸気が混合されて改質器９に導かれる。
改質器９に供給された混合ガスは反応管１０内に充填し
た触媒層を通過するとき、高温の燃焼ガスで加熱されて
水素リッチガスに改質される。この改質器９の反応部は
簡略化して示されるが、実際には多数の反応管１０から
構成される。On the other hand, the steam introduced from the separator 7 through the steam pipe 8 is supplied to the ejector 6, and the steam is mixed with propane gas and introduced into the reformer 9.
When the mixed gas supplied to the reformer 9 passes through the catalyst layer filled in the reaction tube 10, it is heated by the high-temperature combustion gas and reformed into a hydrogen-rich gas. Although the reaction part of the reformer 9 is shown in a simplified manner, it is actually composed of a large number of reaction tubes 10.
【０００５】改質器９で得られた水素リッチガスは低温
一酸化炭素変成器１１でそこに含まれる一酸化炭素が二
酸化炭素に転化され、燃料管１２を通して燃料電池１３
の燃料極１４に供給される。The hydrogen-rich gas obtained in the reformer 9 is converted into carbon dioxide in the low-temperature carbon monoxide shift converter 11 and converted into carbon dioxide.
Is supplied to the fuel electrode 14.
【０００６】また、燃料電池１３の空気極１５には空気
圧縮機１７からの空気が空気管１８を通して供給され
る。そして、空気中の酸素と燃料極１４に供給された水
素リッチガス中の水素の一部とが電解質マトリックス１
６に拡散し、電気化学的反応により電気出力が生じる。
この燃料電池１３の発電部は簡略化して示されるが、実
際には燃料極１４、空気極１５、電解質マトリックス１
６が多数積層して構成される。Air from the air compressor 17 is supplied to the air electrode 15 of the fuel cell 13 through an air pipe 18. Then, oxygen in the air and a part of hydrogen in the hydrogen-rich gas supplied to the fuel electrode 14 are contained in the electrolyte matrix 1.
6 and the electrochemical reaction produces an electrical output.
Although the power generation section of the fuel cell 13 is shown in a simplified manner, in reality, the fuel electrode 14, the air electrode 15, the electrolyte matrix 1
A large number of 6 are stacked.
【０００７】一方、燃料極１４から排出される水素リッ
チガスは未反応の水素を含み、この排ガスは改質器９の
燃焼ガスとするために燃焼ガス排ガス管１９を通して改
質器９のバーナ（図示せず）に供給される。また、燃料
電池１３には酸素と水素とが反応するときに生じる熱を
冷却媒体に伝えて除去する冷却部としての冷却器２０が
備えられる。On the other hand, the hydrogen-rich gas discharged from the fuel electrode 14 contains unreacted hydrogen, and this exhaust gas is used as the combustion gas for the reformer 9 through the combustion gas exhaust gas pipe 19 for the burner of the reformer 9 (see FIG. (Not shown). Further, the fuel cell 13 is provided with a cooler 20 as a cooling unit that transfers heat generated when oxygen and hydrogen react with each other to a cooling medium to remove the heat.
【０００８】このため、分離器７内の水が冷却水循環ポ
ンプ２１で抽出され、冷却水循環管２２を通して冷却器
２０に供給される。また、冷却器２０で温度上昇した冷
却水は冷却器２３で冷却されて分離器７に還るように構
成されている。Therefore, the water in the separator 7 is extracted by the cooling water circulation pump 21 and supplied to the cooler 20 through the cooling water circulation pipe 22. Further, the cooling water whose temperature has risen in the cooler 20 is cooled in the cooler 23 and returned to the separator 7.
【０００９】さらに、液化プロパンガス気化器１には必
要な原燃料を確保するために原燃料系統が備えられる。
すなわち、液化プロパンガス気化器１にかけて燃料貯蔵
タンク２４内の液化プロパンガスが原燃料供給ポンプ２
５によって供給される。Further, the liquefied propane gas vaporizer 1 is provided with a raw fuel system in order to secure a necessary raw fuel.
That is, the liquefied propane gas in the fuel storage tank 24 is fed to the liquefied propane gas vaporizer 1 and the raw fuel supply pump 2
Powered by 5.
【００１０】なお、図中、符号２６は安全弁を示してい
る。また、符号２７は燃料再循環管を示している。In the figure, reference numeral 26 indicates a safety valve. Further, reference numeral 27 indicates a fuel recirculation pipe.
【００１１】[0011]
【発明が解決しようとする課題】燃料系統での液体原燃
料の気化には熱エネルギを必要としており、上記した液
化プロパンガス気化器１にヒータ２を用いたとき、その
電源が欠かせない。通常、この電源は燃料電池１３の電
気出力の一部あるいは外部の商用電力が用いられること
が多いが、こうした燃料電池１３の発電電力を用いる方
法はプラントの発電電力量を低下させてしまい、本来的
に好ましくない。たとえば、上記したプラントにおいて
液化プロパンガスの気化のために消費される電力は燃料
電池の発電電力の約３％に相当する。これは燃料電池発
電プラントの外部出力を減少させ、発電単価を下げるう
えで大きな妨げとなる。また、外部の商用電力を用いる
方法も高価な電気エネルギに頼ることで補機動力費が増
加する一因となり得策でない。The vaporization of the liquid raw fuel in the fuel system requires heat energy, and when the heater 2 is used in the liquefied propane gas vaporizer 1 described above, its power source is indispensable. Usually, a part of the electric output of the fuel cell 13 or an external commercial electric power is used as the power source. However, the method of using the electric power generated by the fuel cell 13 lowers the electric power generated by the plant. Unfavorable. For example, the electric power consumed for vaporizing the liquefied propane gas in the above-mentioned plant corresponds to about 3% of the electric power generated by the fuel cell. This greatly reduces the external output of the fuel cell power plant and lowers the unit price of power generation. In addition, the method of using external commercial power is also an inconvenient method because it depends on expensive electric energy, which contributes to an increase in auxiliary equipment power cost.
【００１２】そこで、本発明の目的は液体原燃料を気化
して改質器に供給するにあたり、気化のために必要な熱
エネルギをプラントで生じる排熱を利用することにより
経済性を大きく高めるようにした燃料電池発電プラント
を提供することにある。Therefore, an object of the present invention is to greatly enhance the economical efficiency by utilizing the exhaust heat generated in the plant as the heat energy required for the vaporization in vaporizing the liquid raw fuel and supplying it to the reformer. To provide the fuel cell power generation plant.
【００１３】[0013]
【課題を解決するための手段】請求項１に係る発明は液
体原燃料を気化する燃料加熱部を有する原燃料気化器
と、原燃料を改質する反応部を有する改質器と、燃料
極、空気極、電解質マトリックスからなる発電部と冷却
部とを有する燃料電池とを具備してなる燃料電池発電プ
ラントにおいて、原燃料気化器が燃料加熱部で液体原燃
料を気化する加熱器と、温水を加熱する温水熱交換器
と、これらの加熱器と温水熱交換器との間を環状に連絡
して温水を循環させる循環ポンプを備えた温水循環系と
を具備し、温水熱交換器が改質器の反応部から排出され
る排ガスにより加熱媒体を加熱する熱交換器または燃料
電池の冷却部を循環する冷却媒体により加熱媒体を加熱
する熱交換器と、温水熱交換器と熱交換器との間を環状
に連絡して加熱媒体を循環させる循環ポンプを備えた加
熱媒体循環系とを備えることを特徴とするものである。The invention according to claim 1 is a raw fuel vaporizer having a fuel heating portion for vaporizing a liquid raw fuel, a reformer having a reaction portion for reforming the raw fuel, and a fuel electrode. In a fuel cell power plant comprising a fuel cell having a power generation section composed of an air electrode, an electrolyte matrix and a cooling section, a raw fuel vaporizer has a heater for vaporizing liquid raw fuel in a fuel heating section, and hot water. The hot water heat exchanger is equipped with a hot water heat exchanger for heating the hot water, and a hot water circulation system having a circulation pump for circulating hot water by annularly connecting the heater and the hot water heat exchanger. A heat exchanger that heats the heating medium by the exhaust gas discharged from the reaction part of the quality device or a heat exchanger that heats the heating medium by the cooling medium that circulates in the cooling part of the fuel cell; a hot water heat exchanger and a heat exchanger The heating medium is circulated by connecting the It is characterized in further comprising a heating medium circulation system equipped with a circulation pump for.
【００１４】さらに、請求項２に係る発明は温水熱交換
器を迂回し、温水循環系同士を結ぶように連絡管を設
け、この連絡管の経路に温水を加熱する補助熱交換器を
配置したことを特徴とするものである。Further, in the invention according to claim 2, a hot water heat exchanger is bypassed, a connecting pipe is provided so as to connect the hot water circulating systems, and an auxiliary heat exchanger for heating hot water is arranged in the path of the hot water heat exchanger. It is characterized by that.
【００１５】また、請求項３に係る発明は温水熱交換器
の下流側でそれぞれ分岐部および合流部を介して温水循
環系と結ぶように分岐管を設け、この分岐管の経路に温
水を冷却する冷却器を配置したことを特徴とするもので
ある。According to the third aspect of the present invention, a branch pipe is provided downstream of the hot water heat exchanger so as to be connected to the hot water circulation system via a branch portion and a joining portion, respectively, and the hot water is cooled in the path of the branch pipe. It is characterized in that a cooling device is installed.
【００１６】さらに、請求項４に係る発明は液体原燃料
を気化する燃料加熱部を有する原燃料気化器と、原燃料
を改質する反応部を有する改質器と、燃料極、空気極、
電解質マトリックスからなる発電部と冷却部とを有する
燃料電池とを具備してなる燃料電池発電プラントにおい
て、原燃料気化器が燃料加熱部で液体原燃料を気化する
加熱器と、加熱器への温水を加熱する温水加熱器を有す
る温水槽と、これらの加熱器と温水熱交換器との間を環
状に連絡して温水を循環させる循環ポンプを備えた第１
温水循環系と、温水槽への温水を加熱する温水熱交換器
と、これらの温水槽と温水熱交換器との間を環状に連絡
して温水を循環させる循環ポンプを備えた第２温水循環
系とを具備し、温水熱交換器が改質器の反応部から排出
される排ガスにより加熱媒体を加熱する熱交換器または
燃料電池の冷却部を循環する冷却媒体により加熱媒体を
加熱する熱交換器と、温水熱交換器と熱交換器との間を
環状に連絡して加熱媒体を循環させる循環ポンプを備え
た加熱媒体循環系とを備えることを特徴とするものであ
る。Further, the invention according to claim 4 is a raw fuel vaporizer having a fuel heating portion for vaporizing liquid raw fuel, a reformer having a reaction portion for reforming raw fuel, a fuel electrode, an air electrode,
In a fuel cell power plant comprising a fuel cell having a power generation section composed of an electrolyte matrix and a cooling section, a raw fuel vaporizer vaporizes a liquid raw fuel in a fuel heating section, and hot water to the heater. A hot water tank having a hot water heater for heating the tank, and a circulation pump for circulating hot water by annularly connecting the heater and the hot water heat exchanger
A second hot water circulation system having a hot water circulation system, a hot water heat exchanger for heating hot water to the hot water tank, and a circulation pump for circulating hot water by annularly connecting the hot water tank and the hot water heat exchanger. A heat exchanger that heats the heating medium by the exhaust gas discharged from the reaction part of the reformer by the hot water heat exchanger, or heats the heating medium by the cooling medium circulating in the cooling part of the fuel cell. And a heating medium circulation system including a circulation pump that circulates the heating medium by annularly connecting between the hot water heat exchanger and the heat exchanger.
【００１７】また、請求項５に係る発明は温水槽の温水
加熱器を迂回し、第１温水循環系同士を結ぶように連絡
管を設け、この連絡管の経路あるいは連絡管分岐部より
も上流側の第１温水循環系に温水を加熱する補助熱交換
器を配置したことを特徴とするものである。In the invention according to claim 5, a connecting pipe is provided so as to bypass the warm water heater of the warm water tank and connect the first warm water circulation systems, and the connecting pipe is provided upstream of the path or the connecting pipe branch portion. It is characterized in that an auxiliary heat exchanger for heating hot water is arranged in the first hot water circulation system on the side.
【００１８】さらに、請求項６に係る発明は液体原燃料
を気化する燃料加熱部を有する原燃料気化器と、原燃料
を改質する反応部を有する改質器と、燃料極、空気極、
電解質マトリックスからなる発電部と冷却部とを有する
燃料電池とを具備してなる燃料電池発電プラントにおい
て、原燃料気化器が燃料加熱部で液体原燃料を気化する
加熱器と、温水を加熱する温水熱交換器と、これらの加
熱器と温水熱交換器との間を環状に連絡して温水を循環
させる循環ポンプを備えた温水循環系とを具備し、温水
熱交換器が改質器の反応部から排出される排ガスと、燃
料電池の発電部からの空気極排ガスとの混合ガスにより
加熱媒体を加熱する熱交換器または燃料電池の冷却部を
循環する冷却媒体により加熱媒体を加熱する熱交換器
と、温水熱交換器と熱交換器との間を環状に連絡して加
熱媒体を循環させる循環ポンプを備えた加熱媒体循環系
とを備えることを特徴とするものである。Further, the invention according to claim 6 is a raw fuel vaporizer having a fuel heating portion for vaporizing a liquid raw fuel, a reformer having a reaction portion for reforming the raw fuel, a fuel electrode, an air electrode,
In a fuel cell power plant comprising a fuel cell having a power generation section composed of an electrolyte matrix and a cooling section, a raw fuel vaporizer vaporizes a liquid raw fuel in a fuel heating section, and hot water for heating hot water. The heat exchanger comprises a heat exchanger and a hot water circulation system including a circulation pump that circulates the hot water by annularly connecting the heater and the hot water heat exchanger. Heat exchanger that heats the heating medium with a mixed gas of exhaust gas discharged from the fuel cell and air electrode exhaust gas from the power generation unit of the fuel cell, or heat exchange that heats the heating medium with a cooling medium that circulates in the cooling unit of the fuel cell And a heating medium circulation system including a circulation pump that circulates the heating medium by annularly connecting between the hot water heat exchanger and the heat exchanger.
【００１９】また、請求項７に係る発明は液体原燃料を
気化する燃料加熱部を有する原燃料気化器と、原燃料を
改質する反応部を有する改質器と、燃料極、空気極、電
解質マトリックスからなる発電部と冷却部とを有する燃
料電池とを具備してなる燃料電池発電プラントにおい
て、原燃料気化器が燃料加熱部で液体原燃料を気化する
加熱器と、加熱器への温水を加熱する温水加熱器を有す
る温水槽と、これらの加熱器と温水熱交換器との間を環
状に連絡して温水を循環させる循環ポンプを備えた第１
温水循環系と、温水槽への温水を加熱する温水熱交換器
と、これらの温水槽と温水熱交換器との間を環状に連絡
して温水を循環させる循環ポンプを備えた第２温水循環
系とを具備し、温水熱交換器が改質器の反応部から排出
される排ガスと、燃料電池の発電部からの空気極排ガス
との混合ガスにより加熱媒体を加熱する熱交換器または
燃料電池の冷却部を循環する冷却媒体により加熱媒体を
加熱する熱交換器と、温水熱交換器と熱交換器との間を
環状に連絡して加熱媒体を循環させる循環ポンプを備え
た加熱媒体循環系とを備えることを特徴とするものであ
る。The invention according to claim 7 is a raw fuel vaporizer having a fuel heating portion for vaporizing a liquid raw fuel, a reformer having a reaction portion for reforming the raw fuel, a fuel electrode, an air electrode, In a fuel cell power plant comprising a fuel cell having a power generation section composed of an electrolyte matrix and a cooling section, a raw fuel vaporizer vaporizes a liquid raw fuel in a fuel heating section, and hot water to the heater. A hot water tank having a hot water heater for heating the tank, and a circulation pump for circulating hot water by annularly connecting the heater and the hot water heat exchanger
A second hot water circulation system having a hot water circulation system, a hot water heat exchanger for heating hot water to the hot water tank, and a circulation pump for circulating hot water by annularly connecting the hot water tank and the hot water heat exchanger. And a fuel cell having a hot water heat exchanger for heating a heating medium by a mixed gas of the exhaust gas discharged from the reaction section of the reformer and the cathode exhaust gas from the power generation section of the fuel cell. Heating medium circulation system including a heat exchanger that heats the heating medium with a cooling medium that circulates through the cooling section of the cooling unit, and a circulation pump that circulates the heating medium by annularly connecting between the hot water heat exchanger and the heat exchanger And is provided.
【００２０】[0020]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。なお、図５に示した構成と同一の
ものには同一の符号を付して説明を省略する。Embodiments of the present invention will be described below with reference to the drawings. The same components as those shown in FIG. 5 are designated by the same reference numerals, and the description thereof will be omitted.
【００２１】図１において、液化プロパンガス気化器１
は液化プロパンガスを気化する加熱器３１を有する。こ
の加熱器３１は温水循環管３２を介して温水熱交換器３
３と連絡している。この温水循環管３２の経路には第１
温水循環ポンプ３４、第２温水循環ポンプ３５が順次設
けられている。さらに、この経路には第１温水循環ポン
プ３４と第２温水循環ポンプ３５との間に三方弁３６、
温水熱交換器３３と加熱器３１との間に三方弁３７、３
８がそれぞれ介装されている。三方弁３６と三方弁３８
との間の連絡管３９には補助熱交換器４０が設けられて
いる。さらに、三方弁３７の手前の温水循環管３２から
分岐し、他端を三方弁３７と結ばれた分岐管４１の経路
には冷却器４２が設けられている。In FIG. 1, a liquefied propane gas vaporizer 1 is shown.
Has a heater 31 for vaporizing liquefied propane gas. This heater 31 is connected to the hot water heat exchanger 3 via a hot water circulation pipe 32.
I am in contact with 3. The hot water circulation pipe 32 has a first path
A warm water circulation pump 34 and a second warm water circulation pump 35 are sequentially provided. Further, in this path, a three-way valve 36 is provided between the first warm water circulation pump 34 and the second warm water circulation pump 35.
A three-way valve 37, 3 is provided between the hot water heat exchanger 33 and the heater 31.
8 are respectively interposed. Three-way valve 36 and three-way valve 38
An auxiliary heat exchanger 40 is provided in the connection pipe 39 between the and. Further, a cooler 42 is provided in the path of a branch pipe 41 that branches from the hot water circulation pipe 32 before the three-way valve 37 and is connected to the three-way valve 37 at the other end.
【００２２】一方、燃料電池１３の冷却器２０と結ばれ
た冷却水循環管２２の経路には第１熱交換器４３が設け
られている。さらに、第１熱交換器４３は加熱媒体循環
管４４を介して第２熱交換器４５と連絡している。この
加熱媒体循環管４４の経路には放熱器４６、加熱媒体循
環ポンプ４７が順次設けられている。さらに、第２熱交
換器４５は排ガス管４８と結ばれ、改質器９の反応部か
らの排ガスが第２熱交換器４５に導入されるようになっ
ている。また、上記した温水熱交換器３３は加熱器３１
への温水を加熱するために加熱媒体循環管４４と結ばれ
ている。On the other hand, a first heat exchanger 43 is provided in the path of the cooling water circulation pipe 22 connected to the cooler 20 of the fuel cell 13. Further, the first heat exchanger 43 communicates with the second heat exchanger 45 via the heating medium circulation pipe 44. A radiator 46 and a heating medium circulation pump 47 are sequentially provided in the path of the heating medium circulation pipe 44. Further, the second heat exchanger 45 is connected to the exhaust gas pipe 48, and the exhaust gas from the reaction part of the reformer 9 is introduced into the second heat exchanger 45. Further, the hot water heat exchanger 33 described above is the heater 31.
It is connected to a heating medium circulation pipe 44 for heating hot water to the.
【００２３】次に、上記構成からなる燃料電池発電プラ
ントの作用を説明する。プラント運転中、低温冷却水循
環管２２を循環する冷却水が燃料電池１３内で酸素と水
素との反応で生じる熱で温度上昇し、分離器７に高温を
保って蓄えられる。この分離器７内の高温の電池冷却水
が冷却水循環ポンプ２１で抽出され、第１熱交換器４３
にかけて流動し、加熱媒体循環ポンプ４７によって送ら
れる加熱媒体と伝熱面を隔てて接触し、加熱媒体が冷却
水の熱を奪って温度上昇する。Next, the operation of the fuel cell power plant having the above structure will be described. During the plant operation, the temperature of the cooling water circulating through the low temperature cooling water circulation pipe 22 rises due to the heat generated by the reaction between oxygen and hydrogen in the fuel cell 13, and is stored in the separator 7 while keeping the temperature high. The high-temperature battery cooling water in this separator 7 is extracted by the cooling water circulation pump 21, and the first heat exchanger 43
Flowing through the heating medium circulating contact with the heating medium sent by the heating medium circulating pump 47 across the heat transfer surface, and the heating medium takes the heat of the cooling water and rises in temperature.
【００２４】この加熱媒体は加熱媒体循環管４４を通っ
て第２熱交換器４５に流れ、そこで排ガス管４８を通し
て導かれる改質器９の反応部からの排ガスと伝熱面を隔
てて再び接触し、さらに温度が上昇する。この温度上昇
で適温（約８０℃）にされた加熱媒体は温水熱交換器３
３に流れて温水循環管３１を通してそこに供給される温
水を加熱する。この後、加熱媒体は放熱器４６に送られ
て温度が下げられ、加熱媒体循環ポンプ４７によって第
１熱交換器４３に送られる。This heating medium flows through the heating medium circulation pipe 44 to the second heat exchanger 45, where it contacts the exhaust gas from the reaction section of the reformer 9 guided through the exhaust gas pipe 48 again with a heat transfer surface therebetween. Then, the temperature rises further. The heating medium heated to the proper temperature (about 80 ° C.) by this temperature rise is the hot water heat exchanger 3
3 to heat the hot water supplied thereto through the hot water circulation pipe 31. After that, the heating medium is sent to the radiator 46 to have its temperature lowered, and is sent to the first heat exchanger 43 by the heating medium circulation pump 47.
【００２５】一方、液化プロパンガス気化器１内には貯
蔵タンク２４からの液化プロパンガスが貯蔵されてい
る。温水熱交換器３３で加熱媒体によって加熱された温
水は温水循環管３２を通って液化プロパンガス気化器１
内に設けた加熱器３１にかけて流動する。このとき、器
内の液化プロパンガスは温水によって加熱され、液化プ
ロパンガスが気化する。こうして気化したプロパンガス
を改質器９の反応部にかけて供給することができる。温
度降下した温水は第１温水循環ポンプ３４によって抽出
され、さらに第２温水循環ポンプ３５で上昇されて温水
熱交換器３３に送られる。この運転中、温水温度が高く
なりすぎて液化プロパンガス気化器１の運転許容温度を
超えたときは三方弁３７をａ−ｃからｂ−ｃに切り換
え、分岐管４１を通して温水を冷却器４２に導いて冷却
し、許容温度範囲内に下げる。On the other hand, liquefied propane gas from the storage tank 24 is stored in the liquefied propane gas vaporizer 1. The hot water heated by the heating medium in the hot water heat exchanger 33 passes through the hot water circulation pipe 32 and the liquefied propane gas vaporizer 1
It flows over the heater 31 provided inside. At this time, the liquefied propane gas in the vessel is heated by hot water, and the liquefied propane gas is vaporized. The propane gas thus vaporized can be supplied to the reaction section of the reformer 9. The warm water whose temperature has dropped is extracted by the first warm water circulation pump 34, further raised by the second warm water circulation pump 35, and sent to the warm water heat exchanger 33. During this operation, when the temperature of the hot water becomes too high and exceeds the operation allowable temperature of the liquefied propane gas vaporizer 1, the three-way valve 37 is switched from ac to bc, and the hot water is supplied to the cooler 42 through the branch pipe 41. Guide, cool, and lower to within allowable temperature range.
【００２６】反対に、温水温度が下がりすぎたときは三
方弁３６をａ−ｃからａ−ｂに、三方弁３８をａ−ｃか
らｂ−ｃに切り換え、連絡管３９を通して温水を補助熱
交換器４０に導いて加熱し、許容温度範囲を下回らない
ように上昇させる。On the contrary, when the temperature of the hot water is too low, the three-way valve 36 is switched from a-c to a-b and the three-way valve 38 is switched from a-c to b-c, and the hot water is exchanged as auxiliary heat through the connecting pipe 39. It is introduced into the vessel 40 and heated, and the temperature is raised so as not to fall below the allowable temperature range.
【００２７】かくして、本実施の形態においては液体原
燃料を改質器９の反応部からの排ガスを用いて気化させ
ることができ、プラントの電気出力および商用電力に頼
る必要がなく、プラントの発電電力量を維持し、また、
補機動力費を節減することが可能である。Thus, in the present embodiment, the liquid raw fuel can be vaporized by using the exhaust gas from the reaction section of the reformer 9, and it is not necessary to rely on the electric output of the plant and the commercial power, and the power generation of the plant can be performed. To maintain the amount of electricity,
It is possible to reduce auxiliary equipment power costs.
【００２８】さらに、本発明の他の実施の形態を図２を
参照して説明する。Further, another embodiment of the present invention will be described with reference to FIG.
【００２９】液化プロパンガス気化器１は燃料加熱部に
加熱器３１を有する。この加熱器３１は温水を循環させ
る第１温水循環管４９を介して御水槽５０内の温水加熱
器５１と連絡している。第１温水循環管４９の経路には
第１温水循環ポンプ３４および補助熱交換器５２が設け
られている。さらに、この経路には補助熱交換器５２と
温水槽５０の温水加熱器５１との間に三方弁５３、温水
加熱器５１と加熱器３１との間に三方弁５４が介装され
ている。三方弁５３と三方弁５４との間は連絡管５５に
よって結ばれている。The liquefied propane gas vaporizer 1 has a heater 31 in the fuel heating section. The heater 31 is in communication with the warm water heater 51 in the water tank 50 through the first warm water circulation pipe 49 that circulates warm water. A first warm water circulation pump 34 and an auxiliary heat exchanger 52 are provided in the path of the first warm water circulation pipe 49. Further, in this path, a three-way valve 53 is interposed between the auxiliary heat exchanger 52 and the warm water heater 51 of the warm water tank 50, and a three-way valve 54 is interposed between the warm water heater 51 and the heater 31. A connecting pipe 55 connects the three-way valve 53 and the three-way valve 54.
【００３０】また、温水槽５０と温水熱交換器３３との
間に温水を循環させる第２温水循環管５６が接続されて
いる。この第２温水循環管５６の経路には第２温水循環
ポンプ３５が設けられている。上記以外の構成には先に
述べた実施の形態と同一の構成であり、これらの構成に
は図１と同じ符号を付して説明を省略する。A second hot water circulation pipe 56 for circulating hot water is connected between the hot water tank 50 and the hot water heat exchanger 33. A second warm water circulation pump 35 is provided in the path of the second warm water circulation pipe 56. The configuration other than the above is the same as that of the above-described embodiment, and these configurations are denoted by the same reference numerals as those in FIG. 1 and their description is omitted.
【００３１】次に、上記構成によるところの作用を説明
する。温水槽５０内に貯留される水が第２温水循環ポン
プ３５で抽出され、第２温水循環管５６を通して温水熱
交換器３３に導かれ、そこで適温（約８０℃）に保たれ
た加熱媒体と伝熱面を隔てて接触して温度が上昇する。
この温水は温水槽５０に還り、そこに蓄えられる。一
方、第１温水循環管４９を流動する温水は温水槽５０の
加熱器５１にかけて流れ、加熱器５１の外側を満たす温
水と伝熱面を隔てて接触し、温度が上昇する。この加熱
された温水は液化プロパンガス気化器１内の加熱器３１
に流動する。そして、液化プロパンガス気化器１内に貯
留される液化プロパンガスがこの温水によって加熱され
て気化する。加熱器３１で温度降下した温水は第１温水
循環ポンプ３４で抽出されて温水槽５０に戻り、そこで
加熱器５１内を流動する間、温水によって加熱される。Next, the operation of the above configuration will be described. The water stored in the warm water tank 50 is extracted by the second warm water circulation pump 35, is guided to the warm water heat exchanger 33 through the second warm water circulation pipe 56, and the heating medium kept at an appropriate temperature (about 80 ° C.) is there. The temperature rises due to contact across the heat transfer surface.
This warm water returns to the warm water tank 50 and is stored there. On the other hand, the warm water flowing through the first warm water circulation pipe 49 flows to the heater 51 of the warm water tank 50, contacts with the warm water filling the outside of the heater 51 across the heat transfer surface, and the temperature rises. The heated hot water is used as a heater 31 in the liquefied propane gas vaporizer 1.
Flows to Then, the liquefied propane gas stored in the liquefied propane gas vaporizer 1 is heated by this hot water and vaporized. The warm water whose temperature has dropped in the heater 31 is extracted by the first warm water circulation pump 34 and returns to the warm water tank 50, where it is heated by the warm water while flowing in the heater 51.
【００３２】この運転中、加熱器３１への温水温度が高
くなりすぎて液化プロパンガス気化器１の運転許容温度
を超えたときは三方弁５３をａ−ｃからａ−ｂに、三方
弁５４をａ−ｃからｂ−ｃにそれぞれ切り換え、加熱器
５１を通すことなく連絡管５５を通して温水を直接加熱
器３１に導くようにする。そして温水が許容温度範囲内
に下がるまで加熱器５１を迂回して流す運転を継続す
る。ちなみに、この運転中、補助熱交換器５２の運転は
停止したままである。During this operation, when the temperature of the hot water to the heater 31 becomes too high and exceeds the operation allowable temperature of the liquefied propane gas vaporizer 1, the three-way valve 53 is changed from a-c to a-b and the three-way valve 54 is used. Is switched from ac to bc, and hot water is directly led to the heater 31 through the connecting pipe 55 without passing the heater 51. Then, the operation of bypassing the heater 51 and flowing the hot water is continued until the warm water falls within the allowable temperature range. Incidentally, the operation of the auxiliary heat exchanger 52 remains stopped during this operation.
【００３３】反対に、温水温度が下がり過ぎたときは補
助熱交換器５２を運転し、温水が許容温度範囲を下回ら
ないように加熱する。このとき、望ましくは三方弁５３
はａ−ｂ、三方弁５４はｂ−ｃに保持し、温水温度が素
早く上昇するようにする。なお、本実施の形態の補助熱
交換器５２については連絡管５５の経路に配置してもよ
い。On the contrary, when the temperature of the hot water is too low, the auxiliary heat exchanger 52 is operated to heat the hot water so as not to fall below the allowable temperature range. At this time, preferably the three-way valve 53
Is kept at ab and the three-way valve 54 is kept at bc so that the hot water temperature rises quickly. The auxiliary heat exchanger 52 of the present embodiment may be arranged in the path of the connecting pipe 55.
【００３４】このように、本実施の形態においても、液
体原燃料を改質器９の反応部からの排ガスを用いて気化
させることができる。このため、プラントの電気出力お
よび商用電力は使用されず。プラントの発電電力料を維
持し、また、補機動力費を節減することが可能になる。As described above, also in this embodiment, the liquid raw fuel can be vaporized by using the exhaust gas from the reaction section of the reformer 9. For this reason, the plant's electrical output and commercial power are not used. It is possible to maintain the power generation charge of the plant and reduce the auxiliary equipment power cost.
【００３５】さらに、他の実施の形態を図３および図４
を参照して説明する。いずれも第２熱交換器４５におい
て加熱媒体を加熱する熱源ガスとして改質器９からの排
ガスと共に、燃料電池１３の発電部からの空気極排ガス
を利用する方法を示すもので、燃料電池１３の空気極１
５から排ガス管４８に掛けて空気極排ガス管５７を接続
する。Still another embodiment will be described with reference to FIGS. 3 and 4.
This will be described with reference to FIG. Both show a method of using the exhaust gas from the reformer 9 as the heat source gas for heating the heating medium in the second heat exchanger 45 and the cathode exhaust gas from the power generation section of the fuel cell 13, Air pole 1
The air electrode exhaust gas pipe 57 is connected from 5 to the exhaust gas pipe 48.
【００３６】ここで、空気極排ガスは空気極排ガス管５
７を通して排ガス管４８内を流れる改質器９の反応部か
らの排ガスに注入された混合ガスとして第２熱交換器４
５に導かれ、そこを通過する加熱媒体を加熱する。Here, the cathode exhaust gas is the cathode exhaust gas pipe 5.
As a mixed gas injected into the exhaust gas from the reaction part of the reformer 9 flowing through the exhaust gas pipe 48 through the second heat exchanger 4
The heating medium which is guided to 5 and passes therethrough is heated.
【００３７】本実施の形態によれば、たとえば、改質器
９からの排ガスの一部が他の用途へ利用される場合にも
う一つの熱源ガスとして空気極排ガスを第２熱交換器４
５に導き、加熱媒体を加熱するのに必要な熱エネルギを
確保することが可能になる。上記以外の構成および作用
については図１および図２の実施の形態のものと同じで
ある。According to the present embodiment, for example, when a part of the exhaust gas from the reformer 9 is used for another purpose, the air electrode exhaust gas is used as another heat source gas for the second heat exchanger 4.
5, it becomes possible to secure the thermal energy required to heat the heating medium. The configuration and operation other than the above are the same as those of the embodiment of FIGS. 1 and 2.
【００３８】[0038]
【発明の効果】以上説明したように請求項１、請求項６
に係る発明は原燃料気化器に加熱器と、熱源加熱媒体と
して燃料電池の冷却部からの冷却媒体と改質器からの排
ガス、あるいは改質器からの排ガスと、燃料電池からの
空気極排ガスとの混合ガスを用いる温水熱交換器とを設
け、温水熱交換器から加熱器にかけて冷却媒体と排ガス
あるいは混合ガスで加熱された温水を導き、この温水で
液体原燃料を気化するようにしたので、気化のために必
要な熱エネルギとして高価な電気エネルギに頼らず、プ
ラントの排ガスを役立てることができ、経済性を大きく
高めることが可能である。As described above, claim 1 and claim 6 are provided.
The invention according to claim 1 is a heater for a raw fuel vaporizer, a cooling medium from a cooling section of a fuel cell as a heat source heating medium and exhaust gas from a reformer, or exhaust gas from a reformer, and cathode exhaust gas from a fuel cell. Since a hot water heat exchanger using a mixed gas of and is provided, the hot water heated by the cooling medium and the exhaust gas or the mixed gas is introduced from the hot water heat exchanger to the heater, and the liquid raw fuel is vaporized by the hot water. The exhaust gas from the plant can be used without relying on expensive electric energy as the heat energy required for vaporization, and the economic efficiency can be greatly improved.
【００３９】さらに、請求項４、請求項７に係る発明は
原燃料気化器に加熱器と、温水を加熱する温水加熱器を
有する温水槽と、熱源加熱媒体として燃料電池の冷却部
からの冷却媒体と改質器からの排ガス、あるいは改質器
からの排ガスと燃料電池からの空気極排ガスとの混合ガ
スを用いる温水熱交換器とを設け、温水熱交換器から温
水槽にかけて排ガスあるいは混合ガスで加熱された温水
を導いて温水加熱器を介して原燃料加熱用温水を加熱
し、この温水を原燃料気化器の加熱器に導き、液体原燃
料を気化するようにしたので、気化のために必要な熱エ
ネルギとして高価な電気エネルギに頼らず、プラントの
排ガスを役立てることができ、経済性を大きく高めるこ
とが可能である。Further, in the invention according to claims 4 and 7, a heater is provided in the raw fuel vaporizer, a hot water tank having a hot water heater for heating hot water, and cooling from a cooling part of the fuel cell as a heat source heating medium. A hot water heat exchanger that uses a mixed gas of the medium and the exhaust gas from the reformer, or the exhaust gas from the reformer and the air electrode exhaust gas from the fuel cell is provided, and the exhaust gas or the mixed gas flows from the hot water heat exchanger to the hot water tank. The hot water for heating the raw fuel is heated via the hot water heater by guiding the hot water heated by the, and this hot water is introduced to the heater of the raw fuel vaporizer to vaporize the liquid raw fuel. The exhaust gas of the plant can be used without relying on expensive electric energy as the heat energy required for the above, and the economical efficiency can be greatly improved.
【図１】本発明による燃料電池発電プラントの実施の形
態を示す系統図。FIG. 1 is a system diagram showing an embodiment of a fuel cell power plant according to the present invention.
【図２】本発明の他の実施の形態を示す系統図。FIG. 2 is a system diagram showing another embodiment of the present invention.
【図３】本発明の他の実施の形態を示す系統図。FIG. 3 is a system diagram showing another embodiment of the present invention.
【図４】本発明の他の実施の形態を示す系統図。FIG. 4 is a system diagram showing another embodiment of the present invention.
【図５】従来の燃料電池発電プラントを示す系統図。FIG. 5 is a system diagram showing a conventional fuel cell power generation plant.
１ 液化プロパンガス気化器 ９ 改質器 １３ 燃料電池 ３１ 加熱器 ３３ 温水熱交換器 ３６、３７、３８、５３、５４ 三方弁 ４０、５２ 補助熱交換器 ４２ 冷却器 ４５ 第２熱交換器 ５０ 温水槽 ５１ 温水加熱器 1 Liquefied propane gas vaporizer 9 Reformer 13 Fuel cell 31 Heater 33 Hot water heat exchanger 36, 37, 38, 53, 54 Three-way valve 40, 52 Auxiliary heat exchanger 42 Cooler 45 Second heat exchanger 50 Temperature Water tank 51 Hot water heater
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石澤 真樹 東京都新宿区西新宿三丁目19番２号 日本 電信電話株式会社内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Maki Ishizawa 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation
Claims (7)
る原燃料気化器と、原燃料を改質する反応部を有する改
質器と、燃料極、空気極、電解質マトリックスからなる
発電部と冷却部とを有する燃料電池とを具備してなる燃
料電池発電プラントにおいて、前記原燃料気化器が該燃
料加熱部で液体原燃料を気化する加熱器と、温水を加熱
する温水熱交換器と、これらの加熱器と温水熱交換器と
の間を環状に連絡して温水を循環させる循環ポンプを備
えた温水循環系とを具備し、前記温水熱交換器が前記改
質器の該反応部から排出される排ガスにより加熱媒体を
加熱する熱交換器または前記燃料電池の該冷却部を循環
する冷却媒体により前記加熱媒体を加熱する熱交換器
と、前記温水熱交換器と前記熱交換器との間を環状に連
絡して前記加熱媒体を循環させる循環ポンプを備えた加
熱媒体循環系とを備えることを特徴とする燃料電池発電
プラント。1. A raw fuel vaporizer having a fuel heating section for vaporizing a liquid raw fuel, a reformer having a reaction section for reforming the raw fuel, and a power generation section comprising a fuel electrode, an air electrode and an electrolyte matrix. In a fuel cell power plant comprising a fuel cell having a cooling unit, the raw fuel vaporizer vaporizes a liquid raw fuel in the fuel heating unit, a hot water heat exchanger for heating hot water, A hot water circulation system having a circulation pump that circulates hot water by annularly connecting between these heaters and the hot water heat exchanger, wherein the hot water heat exchanger is from the reaction section of the reformer. Of a heat exchanger that heats the heating medium by the exhaust gas discharged or a heat exchanger that heats the heating medium by a cooling medium that circulates in the cooling portion of the fuel cell, and the hot water heat exchanger and the heat exchanger The heating medium is connected by connecting the A heating medium circulation system having a circulation pump for circulating the fuel cell power generation plant.
系同士を結ぶように連絡管を設け、この連絡管の経路に
温水を加熱する補助熱交換器を配置したことを特徴とす
る請求項１記載の燃料電池発電プラント。2. The hot water heat exchanger is bypassed, a connecting pipe is provided so as to connect the hot water circulating systems, and an auxiliary heat exchanger for heating hot water is arranged in the path of the connecting pipe. The fuel cell power plant according to claim 1.
岐部および合流部を介して温水循環系と結ぶように分岐
管を設け、この分岐管の経路に温水を冷却する冷却器を
配置したことを特徴とする請求項１記載の燃料電池発電
プラント。3. A branch pipe is provided on the downstream side of the hot water heat exchanger so as to be connected to a hot water circulation system via a branch portion and a merging portion, respectively, and a cooler for cooling the hot water is arranged in the path of the branch pipe. The fuel cell power plant according to claim 1, wherein
る原燃料気化器と、原燃料を改質する反応部を有する改
質器と、燃料極、空気極、電解質マトリックスからなる
発電部と冷却部とを有する燃料電池とを具備してなる燃
料電池発電プラントにおいて、前記原燃料気化器が該燃
料加熱部で液体原燃料を気化する加熱器と、該加熱器へ
の温水を加熱する温水加熱器を有する温水槽と、これら
の加熱器と温水熱交換器との間を環状に連絡して温水を
循環させる循環ポンプを備えた第１温水循環系と、前記
温水槽への温水を加熱する温水熱交換器と、これらの温
水槽と温水熱交換器との間を環状に連絡して温水を循環
させる循環ポンプを備えた第２温水循環系とを具備し、
前記温水熱交換器が前記改質器の該反応部から排出され
る排ガスにより加熱媒体を加熱する熱交換器または前記
燃料電池の該冷却部を循環する冷却媒体により前記加熱
媒体を加熱する熱交換器と、前記温水熱交換器と前記熱
交換器との間を環状に連絡して前記加熱媒体を循環させ
る循環ポンプを備えた加熱媒体循環系とを備えることを
特徴とする燃料電池発電プラント。4. A raw fuel vaporizer having a fuel heating section for vaporizing a liquid raw fuel, a reformer having a reaction section for reforming the raw fuel, and a power generation section comprising a fuel electrode, an air electrode and an electrolyte matrix. In a fuel cell power plant comprising a fuel cell having a cooling unit, the raw fuel vaporizer vaporizes liquid raw fuel in the fuel heating unit, and hot water for heating hot water to the heater. A hot water tank having a heater, a first hot water circulation system having a circulation pump for circulating hot water by annularly connecting the heater and the hot water heat exchanger, and heating hot water to the hot water tank And a second warm water circulation system having a circulation pump that circulates the warm water by annularly connecting between these warm water tanks and the warm water heat exchanger,
A heat exchanger in which the hot water heat exchanger heats a heating medium by the exhaust gas discharged from the reaction section of the reformer, or a heat exchange in which the heating medium is heated by a cooling medium circulating in the cooling section of the fuel cell. And a heating medium circulating system including a circulation pump that circulates the heating medium by annularly connecting between the hot water heat exchanger and the heat exchanger.
記第１温水循環系同士を結ぶように連絡管を設け、この
連絡管の経路あるいは該連絡管分岐部よりも上流側の前
記第１温水循環系に温水を加熱する補助熱交換器を配置
したことを特徴とする請求項４記載の燃料電池発電プラ
ント。5. A connection pipe is provided so as to bypass the hot water heater of the hot water tank and connect the first hot water circulation systems to each other, and the connection pipe is provided upstream of a path of the connection pipe or a branch portion of the connection pipe. The fuel cell power plant according to claim 4, wherein an auxiliary heat exchanger for heating hot water is arranged in the first hot water circulation system.
る原燃料気化器と、原燃料を改質する反応部を有する改
質器と、燃料極、空気極、電解質マトリックスからなる
発電部と冷却部とを有する燃料電池とを具備してなる燃
料電池発電プラントにおいて、前記原燃料気化器が該燃
料加熱部で液体原燃料を気化する加熱器と、温水を加熱
する温水熱交換器と、これらの加熱器と温水熱交換器と
の間を環状に連絡して温水を循環させる循環ポンプを備
えた温水循環系とを具備し、前記温水熱交換器が前記改
質器の該反応部から排出される排ガスと、前記燃料電池
の該発電部からの空気極排ガスとの混合ガスにより加熱
媒体を加熱する熱交換器または前記燃料電池の該冷却部
を循環する冷却媒体により前記加熱媒体を加熱する熱交
換器と、前記温水熱交換器と前記熱交換器との間を環状
に連絡して前記加熱媒体を循環させる循環ポンプを備え
た加熱媒体循環系とを備えることを特徴とする燃料電池
発電プラント。6. A raw fuel vaporizer having a fuel heating portion for vaporizing a liquid raw fuel, a reformer having a reaction portion for reforming the raw fuel, and a power generation portion including a fuel electrode, an air electrode, and an electrolyte matrix. In a fuel cell power plant comprising a fuel cell having a cooling unit, the raw fuel vaporizer vaporizes a liquid raw fuel in the fuel heating unit, a hot water heat exchanger for heating hot water, A hot water circulation system having a circulation pump that circulates hot water by annularly connecting between these heaters and the hot water heat exchanger, wherein the hot water heat exchanger is from the reaction section of the reformer. Heat the heating medium with a heat exchanger that heats the heating medium with a mixed gas of exhaust gas that is discharged and cathode exhaust gas from the power generation unit of the fuel cell or with a cooling medium that circulates through the cooling unit of the fuel cell. Heat exchanger and the hot water heat A fuel cell power plant comprising: a heating medium circulation system including a circulation pump that circulates the heating medium by annularly connecting an exchanger and the heat exchanger.
る原燃料気化器と、原燃料を改質する反応部を有する改
質器と、燃料極、空気極、電解質マトリックスからなる
発電部と冷却部とを有する燃料電池とを具備してなる燃
料電池発電プラントにおいて、前記原燃料気化器が該燃
料加熱部で液体原燃料を気化する加熱器と、該加熱器へ
の温水を加熱する温水加熱器を有する温水槽と、これら
の加熱器と温水熱交換器との間を環状に連絡して温水を
循環させる循環ポンプを備えた第１温水循環系と、前記
温水槽への温水を加熱する温水熱交換器と、これらの温
水槽と温水熱交換器との間を環状に連絡して温水を循環
させる循環ポンプを備えた第２温水循環系とを具備し、
前記温水熱交換器が前記改質器の該反応部から排出され
る排ガスと、前記燃料電池の該発電部からの空気極排ガ
スとの混合ガスにより加熱媒体を加熱する熱交換器また
は前記燃料電池の該冷却部を循環する冷却媒体により前
記加熱媒体を加熱する熱交換器と、前記温水熱交換器と
前記熱交換器との間を環状に連絡して前記加熱媒体を循
環させる循環ポンプを備えた加熱媒体循環系とを備える
ことを特徴とする燃料電池発電プラント。7. A raw fuel vaporizer having a fuel heating section for vaporizing a liquid raw fuel, a reformer having a reaction section for reforming the raw fuel, and a power generation section comprising a fuel electrode, an air electrode and an electrolyte matrix. In a fuel cell power plant comprising a fuel cell having a cooling unit, the raw fuel vaporizer vaporizes liquid raw fuel in the fuel heating unit, and hot water for heating hot water to the heater. A hot water tank having a heater, a first hot water circulation system having a circulation pump for circulating hot water by annularly connecting the heater and the hot water heat exchanger, and heating hot water to the hot water tank And a second warm water circulation system having a circulation pump that circulates the warm water by annularly connecting between these warm water tanks and the warm water heat exchanger,
A heat exchanger or a fuel cell in which the hot water heat exchanger heats a heating medium with a mixed gas of exhaust gas discharged from the reaction section of the reformer and cathode exhaust gas from the power generation section of the fuel cell. A heat exchanger that heats the heating medium with a cooling medium that circulates through the cooling unit, and a circulation pump that circulates the heating medium by annularly connecting between the hot water heat exchanger and the heat exchanger. And a heating medium circulation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8022740A JPH09219208A (en) | 1996-02-08 | 1996-02-08 | Fuel cell power generation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8022740A JPH09219208A (en) | 1996-02-08 | 1996-02-08 | Fuel cell power generation plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09219208A true JPH09219208A (en) | 1997-08-19 |
Family
ID=12091121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8022740A Pending JPH09219208A (en) | 1996-02-08 | 1996-02-08 | Fuel cell power generation plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09219208A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005166360A (en) * | 2003-12-01 | 2005-06-23 | Sinanen Co Ltd | Fuel cell system and assembling method of the same |
| JP2011204684A (en) * | 2011-03-14 | 2011-10-13 | Sinanen Co Ltd | Fuel cell system and assembling method for the fuel cell system |
-
1996
- 1996-02-08 JP JP8022740A patent/JPH09219208A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005166360A (en) * | 2003-12-01 | 2005-06-23 | Sinanen Co Ltd | Fuel cell system and assembling method of the same |
| JP2011204684A (en) * | 2011-03-14 | 2011-10-13 | Sinanen Co Ltd | Fuel cell system and assembling method for the fuel cell system |
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