JPH06111843A - Fuel supply system for fuel cell generator set - Google Patents
Fuel supply system for fuel cell generator setInfo
- Publication number
- JPH06111843A JPH06111843A JP4258711A JP25871192A JPH06111843A JP H06111843 A JPH06111843 A JP H06111843A JP 4258711 A JP4258711 A JP 4258711A JP 25871192 A JP25871192 A JP 25871192A JP H06111843 A JPH06111843 A JP H06111843A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- gas
- fuel cell
- vaporizer
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料改質装置，燃料電
池等を備える燃料電池発電装置において、燃料電池の反
応ガスとしての燃料ガスを得るために、液化燃料ガスを
気化して燃料ガスにして燃料改質装置に供給する燃料供
給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel cell power generator equipped with a fuel reformer, a fuel cell, etc., in which a liquefied fuel gas is vaporized to obtain a fuel gas as a reaction gas for the fuel cell. And a fuel supply device for supplying the fuel to the fuel reformer.
【０００２】[0002]
【従来の技術】燃料電池発電装置は主要構成部として燃
料供給装置，燃料改質装置及び燃料電池を備え、燃料供
給装置にて液化燃料ガスを気化した燃料ガスを燃料改質
装置に供給して水素に富むガスに改質し、この改質ガス
を燃料電池に供給し、別に供給される空気とにより燃料
電池にて電池反応を起こさせて発電する。2. Description of the Related Art A fuel cell power generator is provided with a fuel supply device, a fuel reformer and a fuel cell as main components, and a fuel gas produced by vaporizing liquefied fuel gas is supplied to the fuel reformer. The hydrogen-rich gas is reformed, this reformed gas is supplied to the fuel cell, and the air is separately supplied to cause a cell reaction in the fuel cell to generate electricity.
【０００３】ところで、従来小型燃料電池発電装置にお
いては、燃料供給装置は小規模であり、通常液化燃料ガ
スとしてのプロパン系の液化石油ガスが充填された小型
ガスボンベに直接圧力調整器を取付け、ガスボンベ内の
ガス圧力を減圧することにより液化石油ガスを気化して
石油ガスにする方式が用いられている。また、他の方法
としてガスボンベ内の液化石油ガスを気化器に導き、気
化器にて電気ヒータにより液化石油ガスを加熱して気化
する方式も使用されている。By the way, in the conventional small fuel cell power generator, the fuel supply device is small in scale, and a pressure regulator is directly attached to a small gas cylinder filled with propane-based liquefied petroleum gas as liquefied fuel gas, and a gas cylinder is installed. A method is used in which liquefied petroleum gas is vaporized into petroleum gas by reducing the internal gas pressure. As another method, a method is also used in which liquefied petroleum gas in a gas cylinder is introduced into a vaporizer, and the liquefied petroleum gas is heated by an electric heater in the vaporizer to be vaporized.
【０００４】[0004]
【発明が解決しようとする課題】ガスボンベ内の液化石
油ガスを圧力調整器により減圧して気化する方式は、液
化石油ガスがガスボンベ内を気化するため、気化に際し
て比重の軽い成分が先に気化するなど、燃料電池発電装
置に必要とされる燃料ガスの組成の均一性が得られない
という欠点がある。In the method in which the liquefied petroleum gas in the gas cylinder is depressurized and vaporized by the pressure regulator, the liquefied petroleum gas vaporizes in the gas cylinder, so that a component having a low specific gravity is vaporized first during vaporization. As described above, there is a drawback in that the composition of the fuel gas required for the fuel cell power generator cannot be uniform.
【０００５】また、石油ガスの消費量が増加する際、気
化潜熱によりガスボンベが冷却し、この冷却により生じ
るガス圧力の低下や、外気温度の変動，ガスボンベの残
液量の相違等による気化性能の変化等により、燃料電池
の負荷変化に対して液化石油ガスの気化量を制御するこ
とは困難であるという問題がある。また、気化器にて電
気ヒータにより液化石油ガスを気化するのは、電気ヒー
タ等の補機を必要とし、このため気化器を要しない装置
と比べて補機の電力容量が大きくなるという欠点があ
る。When the consumption of petroleum gas increases, the gas cylinder cools due to the latent heat of vaporization, and the gas pressure decreases due to this cooling, the temperature of the outside air fluctuates, the residual liquid amount of the gas cylinder varies, and so on. Due to such changes, it is difficult to control the vaporization amount of liquefied petroleum gas against changes in the load of the fuel cell. Further, the vaporization of liquefied petroleum gas by an electric heater in a vaporizer requires an auxiliary device such as an electric heater, and therefore has a drawback that the power capacity of the auxiliary device is larger than that of a device that does not require the vaporizer. is there.
【０００６】本発明の目的は、燃料電池の負荷に対応し
て液化燃料ガスの気化量を制御するとともに気化した燃
料ガスの組成が均一化され、また気化のための電力を必
要としない気化器を備える燃料電池発電装置の燃料供給
装置を提供することである。An object of the present invention is to control the vaporization amount of liquefied fuel gas in accordance with the load of the fuel cell, to homogenize the composition of the vaporized fuel gas, and to require no electric power for vaporization. A fuel supply device for a fuel cell power generation device including:
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明によれば液化燃料ガスを気化して燃料ガスを
供給する燃料供給装置と、この燃料供給装置から燃料ガ
スが供給される燃料改質装置と、この燃料改質装置で改
質されたガスが供給される燃料電池とを備える燃料電池
発電装置において、燃料供給装置は、液化燃料ガスを貯
留する液化燃料タンクと、このタンクから供給ポンプに
より供給される液化燃料ガスを、燃料電池の発電時生じ
る熱を除熱して排出される排出冷却媒体により加熱して
気化する気化器及びこの気化器からの気化した燃料ガス
を貯留するガス容器からなる気化装置と、気化器に供給
する排出冷却媒体の流量を燃料電池の出力に応じた所定
流量に制御する流量制御手段と、ガス容器内の燃料ガス
の圧力を気化器に供給する液化燃料ガスの流量の制御に
より所定圧力に制御する圧力制御手段とを備えるものと
する。In order to solve the above-mentioned problems, according to the present invention, a fuel supply device for vaporizing liquefied fuel gas to supply the fuel gas, and the fuel gas is supplied from this fuel supply device. In a fuel cell power generation device including a fuel reforming device and a fuel cell to which gas reformed by the fuel reforming device is supplied, the fuel supply device includes a liquefied fuel tank for storing liquefied fuel gas, and this tank. Liquefied fuel gas supplied by a supply pump from the vaporizer that heats and vaporizes the liquefied fuel gas by the exhaust cooling medium discharged by removing the heat generated during power generation of the fuel cell, and the vaporized fuel gas from this vaporizer is stored. A vaporizer comprising a gas container, a flow rate control means for controlling the flow rate of the exhaust cooling medium supplied to the vaporizer to a predetermined flow rate according to the output of the fuel cell, and the pressure of the fuel gas in the gas container to the vaporizer. It shall comprise a pressure control means for controlling a predetermined pressure by the flow rate control of feed liquefied fuel gas.
【０００８】ここで、燃料供給装置における流量制御手
段は、気化器に供給する排出冷却媒体の流量を制御する
流量制御弁と、燃料電池の出力を検出する出力検出器
と、この出力検出器で検出した出力に応じてあらかじめ
定められた流量で排出冷却媒体が流れるように流量制御
弁を制御する制御部とを備えるものとする。また、圧力
制御手段は、ガス容器内の燃料ガスの圧力を検出する圧
力検出器と、この圧力検出器での検出圧力と所定圧力の
目標値との偏差から供給ポンプの回転数を制御して液体
燃料タンクから供給する液化燃料ガスの流量を制御する
制御手段とを備えるものとする。Here, the flow rate control means in the fuel supply system includes a flow rate control valve for controlling the flow rate of the exhaust cooling medium supplied to the carburetor, an output detector for detecting the output of the fuel cell, and this output detector. The control unit controls the flow rate control valve so that the discharged cooling medium flows at a predetermined flow rate according to the detected output. The pressure control means controls the rotation speed of the supply pump from the pressure detector that detects the pressure of the fuel gas in the gas container and the deviation between the pressure detected by the pressure detector and the target value of the predetermined pressure. And a control means for controlling the flow rate of the liquefied fuel gas supplied from the liquid fuel tank.
【０００９】なお、気化器及びガス容器からなる気化装
置をバイパスして液化燃料タンク内の自然気化した燃料
ガスを燃料改質装置に供給するバイパスガス系を設ける
ものとする。It is to be noted that a bypass gas system for supplying the naturally vaporized fuel gas in the liquefied fuel tank to the fuel reformer by bypassing the vaporizer comprising the vaporizer and the gas container is provided.
【００１０】[0010]
【作用】燃料改質装置で水素に富むガスに改質される燃
料ガスの原料となる液化石油ガス等の液化燃料ガスは液
化燃料タンクに貯留される。そしてこの液化燃料ガスを
燃料ガスに気化する場合、液化燃料タンク内の液化燃料
ガスを供給ポンプにより気化装置の気化器に供給して気
化する。この際、気化器では燃料電池の発電時生じる熱
を除熱して排出されて昇温した排出冷却媒体により液化
燃料ガスを加熱して気化して燃料ガスにする。この燃料
ガスはガス容器に貯留されて燃料改質装置に供給され、
燃料改質装置にて水素に富むガスに改質されて燃料電池
に供給される。そして燃料電池はこの改質されたガスと
別に供給される空気とにより電池反応を起こして発電す
る。The liquefied fuel gas such as liquefied petroleum gas, which is the raw material of the fuel gas reformed into the hydrogen-rich gas in the fuel reformer, is stored in the liquefied fuel tank. When the liquefied fuel gas is vaporized into the fuel gas, the liquefied fuel gas in the liquefied fuel tank is supplied to the vaporizer of the vaporizer by the supply pump and vaporized. At this time, in the vaporizer, the liquefied fuel gas is heated and vaporized into fuel gas by removing the heat generated during power generation of the fuel cell and discharging and heating the discharged cooling medium. This fuel gas is stored in a gas container and supplied to the fuel reformer,
The fuel is reformed into a gas rich in hydrogen by the fuel reformer and supplied to the fuel cell. Then, the fuel cell causes a cell reaction by the reformed gas and air supplied separately to generate electricity.
【００１１】なお、気化器にて液化燃料ガスを気化し、
この気化した燃料ガスをガス容器に貯留する際には流量
制御手段，圧力制御手段により燃料電池の出力に応じて
必要とする燃料ガス量を燃料改質装置に供給できるよう
にしている。すなわち、燃料電池の負荷に供給する出力
を出力検出器で検出し、制御部によりこの検出した出力
に応じてあらかじめ定められた排出冷却媒体の流量を気
化器に供給するように流量制御弁を制御する。The liquefied fuel gas is vaporized by the vaporizer,
When the vaporized fuel gas is stored in the gas container, the amount of fuel gas required according to the output of the fuel cell can be supplied to the fuel reformer by the flow rate control means and the pressure control means. That is, the output supplied to the load of the fuel cell is detected by the output detector, and the control unit controls the flow control valve so as to supply the carburetor with a predetermined flow rate of the discharged cooling medium according to the detected output. To do.
【００１２】ここで、前記あらかじめ定められた排出冷
却媒体の流量は、燃料電池の出力に必要な液化燃料ガス
の流量よりその気化に必要な熱量を演算し、この演算熱
量に見合った流量とする。このようにして気化器にて燃
料電池の出力に応じた流量の排出冷却媒体により液化燃
料ガスを気化するとともに、ガス容器内のガス圧力を圧
力検出器で検出した検出圧力と目標圧力との偏差から供
給ポンプの回転数を制御して気化器に供給する液化燃料
ガスの流量を制御することにより、燃料電池の出力に応
じて必要とされる気化器で気化した燃料ガス量がガス容
器に貯留され、燃料電池の出力に対応する量の燃料ガス
をガス容器から燃料改質装置に供給することができる。Here, the predetermined flow rate of the exhaust cooling medium is calculated by calculating the heat quantity required for vaporization from the flow rate of the liquefied fuel gas required for the output of the fuel cell, and is set to a flow rate commensurate with the calculated heat quantity. . In this way, the liquefied fuel gas is vaporized by the exhaust cooling medium at a flow rate according to the output of the fuel cell in the vaporizer, and the gas pressure in the gas container is deviated from the detected pressure detected by the pressure detector and the target pressure. The amount of fuel gas vaporized by the vaporizer required according to the output of the fuel cell is stored in the gas container by controlling the rotation speed of the supply pump to control the flow rate of the liquefied fuel gas supplied to the vaporizer. Thus, the fuel gas in an amount corresponding to the output of the fuel cell can be supplied from the gas container to the fuel reformer.
【００１３】このようにして気化器では液化燃料ガスが
燃料電池の出力に応じて必要とする液化燃料ガスを強制
的に気化するので、気化した燃料ガスは液化燃料ガスと
同一で均一な組成を有し、また燃料電池の出力に対応す
る量の液化燃料ガスを気化するに足る気化熱が与えられ
て気化するので、外部の大気条件等に影響されずに必要
な量の気化した燃料ガスが得られる。In this way, in the vaporizer, the liquefied fuel gas forcibly vaporizes the required liquefied fuel gas according to the output of the fuel cell, so that the vaporized fuel gas has the same and uniform composition as the liquefied fuel gas. In addition, since the heat of vaporization sufficient to vaporize the liquefied fuel gas in an amount corresponding to the output of the fuel cell is given to vaporize, the required amount of vaporized fuel gas is not affected by the external atmospheric conditions and the like. can get.
【００１４】また、気化器での気化には燃料電池から排
出される排出冷却媒体の排熱を利用するので、気化器用
の電力を必要としない。なお、燃料電池の起動時、燃料
電池から排出される排出冷却媒体がないが、バイパスガ
ス系により、液化燃料タンク内の自然気化した燃料ガス
を燃料改質装置に供給して燃料ガスの改質を行なうこと
ができる。Further, since the exhaust heat of the exhaust cooling medium exhausted from the fuel cell is used for vaporization in the vaporizer, electric power for the vaporizer is not required. Although there is no exhaust cooling medium discharged from the fuel cell when the fuel cell starts up, the bypass gas system supplies the fuel gas that is naturally vaporized in the liquefied fuel tank to the fuel reformer to reform the fuel gas. Can be done.
【００１５】[0015]
【実施例】以下図面に基づいて本発明の実施例について
説明する。図１は本発明の実施例による燃料供給装置を
備えた燃料電池発電装置の系統図である。図１において
液化燃料タンクとしてのガスボンベ１は液化燃料ガスと
してのプロパン系の液化石油ガスが充填され、上部には
自然気化した石油ガスが存在している。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of a fuel cell power generator including a fuel supply device according to an embodiment of the present invention. In FIG. 1, a gas cylinder 1 as a liquefied fuel tank is filled with propane-based liquefied petroleum gas as a liquefied fuel gas, and naturally vaporized petroleum gas is present in the upper part.
【００１６】気化装置２は気化器３とガス容器４とから
なり、気化器３は液化石油ガスが流れる伝熱管５を有す
る熱交換器であり、またガス容器４は気化器３にて気化
した石油ガスを貯留する。液化燃料ガス供給系８は供給
ポンプ９とバルブ１０，１１とを備えてガスボンベ１と
気化器３とに接続して設けられ、ガスボンベ１内の液化
石油ガスを気化器３に供給する。The vaporizer 2 comprises a vaporizer 3 and a gas container 4, the vaporizer 3 is a heat exchanger having a heat transfer pipe 5 through which liquefied petroleum gas flows, and the gas container 4 is vaporized by the vaporizer 3. Store oil and gas. The liquefied fuel gas supply system 8 is provided with a supply pump 9 and valves 10 and 11 and is connected to the gas cylinder 1 and the vaporizer 3, and supplies the liquefied petroleum gas in the gas cylinder 1 to the vaporizer 3.
【００１７】ガス供給系１３は圧力調整弁１４とバルブ
１５，１６とを備えてガス容器４と燃料改質装置１７と
に接続して設けられ、ガス容器４内の気化した石油ガス
を燃料改質装置１７に供給する。バイパスガス系１９は
気化装置２をバイパスし、ガスボンベ１内の自然気化し
た石油ガス部とガス供給系１３の圧力調整弁１４の上流
とにバルブ２０，２１を備えて接続して設けられ、自然
気化した石油ガスを燃料改質装置１７に供給する。The gas supply system 13 is provided with a pressure control valve 14 and valves 15 and 16 and is connected to the gas container 4 and the fuel reformer 17, and the vaporized petroleum gas in the gas container 4 is refueled. Supply to the quality device 17. The bypass gas system 19 bypasses the vaporizer 2 and is provided by connecting the naturally vaporized petroleum gas part in the gas cylinder 1 and the upstream of the pressure adjusting valve 14 of the gas supply system 13 by providing valves 20 and 21 to the natural gas. The vaporized petroleum gas is supplied to the fuel reformer 17.
【００１８】排出冷却水供給系２２及び排出冷却水排出
系２３は、それぞれ燃料電池２４の発電時生じる熱を除
熱する冷却水の冷却水出口系２５と冷却水入口系２６と
から分岐して気化器３に接続されている。なお、排出冷
却水供給系２２が冷却水出口系２５から分岐する箇所に
流量調整可能な三方弁２７が設けられている。出力検出
器３０は燃料電池２４の負荷に供給する出力を電流とし
て検出し、検出電流の信号は制御部３１に入力される。
制御部３１は燃料電池２４の出力の電流に応じてあらか
じめ定められた排出冷却水の流量を気化器３に供給する
ように三方弁２７を制御する。なお、前記あらかじめ定
められた排出冷却水の流量は、前述のように燃料電池２
４の出力に応じて必要とする液化石油ガスを気化するに
必要な流量である。The discharge cooling water supply system 22 and the discharge cooling water discharge system 23 are branched from a cooling water outlet system 25 and a cooling water inlet system 26, respectively, for removing heat generated by the fuel cell 24 during power generation. It is connected to the vaporizer 3. A three-way valve 27 whose flow rate can be adjusted is provided at a location where the discharged cooling water supply system 22 branches from the cooling water outlet system 25. The output detector 30 detects the output supplied to the load of the fuel cell 24 as a current, and the detected current signal is input to the control unit 31.
The control unit 31 controls the three-way valve 27 so as to supply the vaporizer 3 with a predetermined flow rate of the discharged cooling water according to the output current of the fuel cell 24. The predetermined flow rate of the discharged cooling water is the same as that of the fuel cell 2 as described above.
4 is the flow rate required to vaporize the liquefied petroleum gas required according to the output of No. 4.
【００１９】圧力検出器３２はガス容器４内の石油ガス
の圧力を検出し、この検出圧力の信号が調節器３３に入
力される。調節器３３は入力された検出圧力と所定圧力
の目標値との偏差から供給ポンプ９の回転数を制御して
気化器３に供給する液化石油ガスの流量を制御する。燃
料供給装置は、ガスボンベ１，液化燃料ガス供給系８，
気化装置２，ガス供給系１３，バイパスガス系１９，排
出冷却水供給，排出系２２，２３，制御部３１による排
出冷却水の流量制御手段及び調節器３３によるガス容器
４内の燃料ガスの圧力制御手段から構成される。The pressure detector 32 detects the pressure of the petroleum gas in the gas container 4, and the signal of the detected pressure is input to the controller 33. The controller 33 controls the rotation speed of the supply pump 9 based on the deviation between the detected pressure and the target value of the predetermined pressure, and controls the flow rate of the liquefied petroleum gas supplied to the vaporizer 3. The fuel supply device includes a gas cylinder 1, a liquefied fuel gas supply system 8,
Vaporizer 2, gas supply system 13, bypass gas system 19, exhaust cooling water supply, exhaust systems 22, 23, flow rate control means for exhaust cooling water by controller 31, and pressure of fuel gas in gas container 4 by controller 33 It is composed of control means.
【００２０】燃料改質装置１７はガス容器４から供給さ
れる燃料ガスを水素に富むガスに改質する。燃料電池２
４は燃料改質装置１７で生成された改質ガスと別に供給
される空気とにより電池反応して発電する。冷却塔３５
は、内部に燃料電池２４から冷却水出口系２５を経る排
出冷却水が通流する伝熱管３６と、上部に強制通風させ
るファン３７と、下部に散水用冷却水を貯留する冷却水
タンク３８とを備え、冷却水タンク３８内の散水用冷却
水をポンプ３９により送水して散水管４０より散水し、
ファン３７の強制通風により冷却された散水により伝熱
管３６を流れる排出冷却水を冷却する。The fuel reformer 17 reforms the fuel gas supplied from the gas container 4 into a gas rich in hydrogen. Fuel cell 2
Numeral 4 causes a cell reaction by the reformed gas generated by the fuel reformer 17 and air supplied separately to generate electricity. Cooling tower 35
Is a heat transfer tube 36 through which the discharged cooling water from the fuel cell 24 passes through the cooling water outlet system 25, a fan 37 for forced ventilation in the upper part, and a cooling water tank 38 for storing the sprinkling cooling water in the lower part. The cooling water for sprinkling in the cooling water tank 38 is sent by the pump 39 and sprinkled from the sprinkling pipe 40.
The discharge cooling water flowing through the heat transfer tube 36 is cooled by the sprinkling water cooled by the forced ventilation of the fan 37.
【００２１】このような構成により、燃料電池発電装置
の運転時、バルブ１０，１１を開、バルブ２０を閉にし
てガスボンベ１内の液化石油ガスを供給ポンプ９により
気化器３の伝熱管５に通流させる。伝熱管５内の液化石
油ガスは冷却水出口系２５から排出冷却水供給系２２を
経る燃料電池２４からの排出冷却水により加熱されて気
化し、気化した石油ガスはガス容器４に貯留される。With such a configuration, during operation of the fuel cell power generator, the valves 10 and 11 are opened and the valve 20 is closed to supply the liquefied petroleum gas in the gas cylinder 1 to the heat transfer pipe 5 of the vaporizer 3 by the supply pump 9. Let it flow. The liquefied petroleum gas in the heat transfer tube 5 is heated and vaporized by the discharged cooling water from the fuel cell 24 passing through the cooling water outlet system 25 and the discharged cooling water supply system 22, and the vaporized petroleum gas is stored in the gas container 4. .
【００２２】なお、伝熱管５を加熱した排出冷却水は排
出冷却水排出系２３を経て冷却水入口系２６に合流す
る。ガス容器４内の気化した石油ガスは、弁１５，１６
を開にしたガス供給系１３を経て圧力調整弁１４により
圧力が制御されて燃料改質装置１７に供給される。供給
された石油ガスは燃料改質装置１７にて水素に富むガス
に改質され、この改質ガスは燃料電池２４に供給され、
別に供給される空気とにより燃料電池２４は電池反応を
起こして発電する。そして発電時生じる熱は、冷却塔３
５から冷却水入口系２６を経て供給される冷却塔３５に
て冷却された冷却水により除熱される。そして除熱によ
り昇温して燃料電池２４から排出される排出冷却水は、
冷却水出口系２５を経て冷却器３に供給された残りの排
出冷却水が冷却塔３５に戻されて冷却される。The discharged cooling water that has heated the heat transfer tube 5 joins the cooling water inlet system 26 through the discharged cooling water discharge system 23. The vaporized petroleum gas in the gas container 4 has valves 15, 16
The pressure is controlled by the pressure regulating valve 14 via the gas supply system 13 that is opened, and the pressure is supplied to the fuel reformer 17. The supplied petroleum gas is reformed by the fuel reformer 17 into a gas rich in hydrogen, and this reformed gas is supplied to the fuel cell 24,
The fuel cell 24 causes a cell reaction with the separately supplied air to generate electricity. The heat generated during power generation is the cooling tower 3
The heat is removed by the cooling water cooled by the cooling tower 35 supplied from 5 through the cooling water inlet system 26. The discharged cooling water that is heated by the heat removal and is discharged from the fuel cell 24 is
The remaining discharged cooling water supplied to the cooler 3 via the cooling water outlet system 25 is returned to the cooling tower 35 to be cooled.
【００２３】ところで、燃料電池２４の負荷、すなわち
出力が変化したときは必要とする石油ガス量も出力に対
応して制御されるが、この制御は下記のようにして行な
われる。燃料電池２４の出力の電流を出力検出器３０で
検出し、この検出電流の信号を制御部３１に入力する。
そして制御部３１にて検出電流に応じてあらかじめ定め
られた排出冷却水の流量が気化器３に供給するように三
方弁２７を制御する。By the way, when the load of the fuel cell 24, that is, the output changes, the required amount of petroleum gas is also controlled in accordance with the output. This control is performed as follows. The output current of the fuel cell 24 is detected by the output detector 30, and the detected current signal is input to the control unit 31.
Then, the control unit 31 controls the three-way valve 27 so that a predetermined flow rate of the discharged cooling water according to the detected current is supplied to the carburetor 3.
【００２４】一方、ガス容器４内の気化した石油ガスの
圧力を圧力検出器３２で検出し、この検出圧力の信号を
調節器３３に入力する。そして調節器３９にて入力され
た検出圧力と所定圧力の目標値の偏差から供給ポンプ９
の回転数を制御して、燃料電池２４の出力に応じた液化
石油ガスの流量を気化器３に供給するように制御する。On the other hand, the pressure of the vaporized petroleum gas in the gas container 4 is detected by the pressure detector 32, and the signal of the detected pressure is input to the controller 33. Then, based on the deviation between the detected pressure input by the controller 39 and the target value of the predetermined pressure, the supply pump 9
The number of rotations of the fuel cell 24 is controlled so that the flow rate of the liquefied petroleum gas according to the output of the fuel cell 24 is supplied to the vaporizer 3.
【００２５】このようにして燃料電池２４の出力に応じ
て気化器３に供給する排出冷却水の流量及び液化石油ガ
スの流量を制御することにより、燃料電池２４の出力に
対応する石油ガスの流量を燃料改質装置１７に円滑に供
給できる。燃料電池発電装置の起動時には、燃料電池２
４は発電していないので気化器３に供給する燃料電池２
４からの排出冷却水がない。したがって弁１０，１１，
１５を閉、弁２０，２１を開にしてガスボンベ１内の自
然気化した石油ガスをバイパスガス系１９を経て燃料改
質装置１７に供給し、改質反応を行なわせる。By thus controlling the flow rate of the exhaust cooling water and the liquefied petroleum gas supplied to the vaporizer 3 according to the output of the fuel cell 24, the flow rate of the petroleum gas corresponding to the output of the fuel cell 24 is controlled. Can be smoothly supplied to the fuel reformer 17. When the fuel cell power generator is started, the fuel cell 2
No. 4 does not generate power, so fuel cell 2 to supply to vaporizer 3
There is no discharge cooling water from 4. Therefore, the valves 10, 11,
By closing 15 and opening the valves 20 and 21, the naturally vaporized petroleum gas in the gas cylinder 1 is supplied to the fuel reforming device 17 through the bypass gas system 19 to perform the reforming reaction.
【００２６】[0026]
【発明の効果】以上の説明から明らかなように、本発明
によれば前述の構成により液化燃料タンク内の液化燃料
ガスを気化器にて、燃料電池の発電時除熱して排出され
る排出冷却媒体の排熱により気化するので、液化燃料ガ
スの組成と同一で均一な組成の気化した燃料ガスを安定
して得ることができるとともに、従来のような気化用の
電力が不要になる。As is apparent from the above description, according to the present invention, the exhaust cooling for removing the liquefied fuel gas in the liquefied fuel tank by the vaporizer by the vaporizer during the power generation of the fuel cell is performed. Since it is vaporized by the exhaust heat of the medium, a vaporized fuel gas having the same composition as the liquefied fuel gas and a uniform composition can be stably obtained, and electric power for vaporization as in the conventional case is not required.
【００２７】また、流量制御手段，圧力制御手段により
燃料電池の負荷の変化に対応して気化する燃料ガス量を
制御できるとともに、燃料改質装置の脱硫反応器，改質
器，ＣＯ変成器等の触媒改良に伴う充填率の変化並びに
弁，配管の変更に伴う圧力損失の変化があっても、必要
な気化した燃料ガス量を燃料改質装置に供給できる。ま
た、液化燃料タンク内の自然気化した燃料ガスを気化装
置をバイパスして燃料改質装置に供給できるので、燃料
電池発電装置の起動時でも、燃料改質装置で改質反応を
行なわせることができる。Further, the flow control means and the pressure control means can control the amount of the fuel gas vaporized in accordance with the change in the load of the fuel cell, and also can be a desulfurization reactor, a reformer, a CO shifter of the fuel reformer, etc. Even if there is a change in the filling rate due to the improvement of the catalyst and a change in the pressure loss due to the change in the valve and piping, the required vaporized fuel gas amount can be supplied to the fuel reformer. Further, since the naturally vaporized fuel gas in the liquefied fuel tank can be supplied to the fuel reformer by bypassing the vaporizer, the reforming reaction can be performed in the fuel reformer even when the fuel cell power generator is started. it can.
【図１】本発明の実施例による燃料供給装置を備えた燃
料電池発電装置の系統図FIG. 1 is a system diagram of a fuel cell power generator including a fuel supply device according to an embodiment of the present invention.
１ ガスボンベ ２ 気化装置 ３ 気化器 ４ ガス容器 ９ 供給ポンプ １７ 燃料改質装置 １９ バイパスガス系 ２４ 燃料電池 ２７ 三方弁 ３０ 出力検出器 ３１ 制御部 ３２ 圧力検出器 ３３ 調節器 1 Gas cylinder 2 Vaporizer 3 Vaporizer 4 Gas container 9 Supply pump 17 Fuel reformer 19 Bypass gas system 24 Fuel cell 27 Three-way valve 30 Output detector 31 Control part 32 Pressure detector 33 Regulator
Claims (4)
る燃料供給装置と、この燃料供給装置から燃料ガスが供
給される燃料改質装置と、この燃料改質装置で改質され
たガスが供給される燃料電池とを備える燃料電池発電装
置において、燃料供給装置は、液化燃料ガスが貯留され
る液化燃料タンクと、このタンクから供給ポンプにより
供給される液化燃料ガスを、燃料電池の発電時生じる熱
を除熱して排出される排出冷却媒体により加熱して気化
する気化器及びこの気化器からの気化した燃料ガスを貯
留して燃料改質装置に供給するガス容器からなる気化装
置と、気化器に供給する排出冷却媒体の流量を燃料電池
の出力に応じた所定流量に制御する流量制御手段と、ガ
ス容器内の燃料ガスの圧力を気化器に供給する液化燃料
ガスの流量の制御により所定圧力に制御する圧力制御手
段とを備えたことを特徴とする燃料電池発電装置。1. A fuel supply device for vaporizing a liquefied fuel gas to supply the fuel gas, a fuel reforming device to which the fuel gas is supplied from the fuel supply device, and a gas reformed by the fuel reforming device. In the fuel cell power generator including the fuel cell to which the fuel cell is supplied, the fuel supply device generates the liquefied fuel tank in which the liquefied fuel gas is stored, and the liquefied fuel gas supplied from the tank by the supply pump to generate electricity in the fuel cell. A vaporizer comprising a vaporizer that heats and vaporizes by heating an exhaust cooling medium that removes heat generated at the time of discharge, and a gas container that stores vaporized fuel gas from this vaporizer and supplies it to the fuel reformer, Flow rate control means for controlling the flow rate of the exhaust cooling medium supplied to the vaporizer to a predetermined flow rate according to the output of the fuel cell, and control of the flow rate of the liquefied fuel gas for supplying the pressure of the fuel gas in the gas container to the vaporizer. Fuel cell power generation apparatus characterized by comprising a pressure control means for controlling more predetermined pressure.
段は、気化器に供給する排出冷却媒体の流量を制御する
流量制御弁と、燃料電池の出力を検出する出力検出器
と、出力検出器で検出した出力に応じてあらかじめ定め
られた流量が流れるように流量制御弁を制御する制御部
とを備えたことを特徴とする燃料電池発電装置の燃料供
給装置。2. The flow control means according to claim 1, wherein the flow control means controls a flow rate of the exhaust cooling medium supplied to the carburetor, an output detector for detecting an output of the fuel cell, and an output detection. And a control unit that controls a flow rate control valve so that a predetermined flow rate flows according to the output detected by the container.
段は、ガス容器内の燃料ガスの圧力を検出する圧力検出
器と、この圧力検出器での検出圧力と所定圧力の目標値
との偏差から供給ポンプの回転数を制御して液化燃料タ
ンクから供給する液化燃料ガスの流量を制御する制御手
段とを備えたことを特徴とする燃料電池発電装置の燃料
供給装置。3. The pressure control means according to claim 1, comprising a pressure detector for detecting the pressure of the fuel gas in the gas container, a pressure detected by the pressure detector and a target value of a predetermined pressure. A fuel supply device for a fuel cell power generator, comprising: a control unit that controls the rotation speed of a supply pump from the deviation to control the flow rate of liquefied fuel gas supplied from a liquefied fuel tank.
気化器及びガス容器からなる気化装置をバイパスして液
化燃料タンク内の自然気化した燃料ガスを燃料改質装置
に供給するバイパスガス系を設けたことを特徴とする燃
料電池発電装置の燃料供給装置。4. The method according to claim 1, 2, or 3,
A fuel supply device for a fuel cell power generation device, characterized in that a bypass gas system for supplying a naturally vaporized fuel gas in a liquefied fuel tank to a fuel reformer by bypassing a vaporizer comprising a vaporizer and a gas container is provided. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04258711A JP3118982B2 (en) | 1992-09-29 | 1992-09-29 | Fuel cell power generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04258711A JP3118982B2 (en) | 1992-09-29 | 1992-09-29 | Fuel cell power generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06111843A true JPH06111843A (en) | 1994-04-22 |
| JP3118982B2 JP3118982B2 (en) | 2000-12-18 |
Family
ID=17324038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04258711A Expired - Lifetime JP3118982B2 (en) | 1992-09-29 | 1992-09-29 | Fuel cell power generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3118982B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001006709A (en) * | 1999-06-24 | 2001-01-12 | Sanyo Electric Co Ltd | Fuel cell system |
| JP2004207052A (en) * | 2002-12-25 | 2004-07-22 | Yazaki Corp | Fuel gas supplying method to fuel cell system and its apparatus |
| JP2007005315A (en) * | 2005-06-24 | 2007-01-11 | Samsung Sdi Co Ltd | Flow rate correction method of fuel supply unit for fuel cell system |
| KR101435390B1 (en) * | 2012-08-23 | 2014-08-28 | 삼성중공업 주식회사 | Fuel cell systen and ship having the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK178852B1 (en) * | 2016-03-02 | 2017-03-27 | Serenergy As | System and method for adjusting the temperature of cooling-liquid for a fuel cell |
-
1992
- 1992-09-29 JP JP04258711A patent/JP3118982B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001006709A (en) * | 1999-06-24 | 2001-01-12 | Sanyo Electric Co Ltd | Fuel cell system |
| JP2004207052A (en) * | 2002-12-25 | 2004-07-22 | Yazaki Corp | Fuel gas supplying method to fuel cell system and its apparatus |
| JP2007005315A (en) * | 2005-06-24 | 2007-01-11 | Samsung Sdi Co Ltd | Flow rate correction method of fuel supply unit for fuel cell system |
| US7757668B2 (en) | 2005-06-24 | 2010-07-20 | Samsung Sdi Co., Ltd. | Method of correcting flow rate in fuel supply unit of fuel cell system |
| JP4558683B2 (en) * | 2005-06-24 | 2010-10-06 | 三星エスディアイ株式会社 | Flow rate correction method for fuel supply system for fuel cell system |
| KR101435390B1 (en) * | 2012-08-23 | 2014-08-28 | 삼성중공업 주식회사 | Fuel cell systen and ship having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3118982B2 (en) | 2000-12-18 |
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