JPS63308876A - Start and stop controlling method for fuel cell power generation equipment - Google Patents
Start and stop controlling method for fuel cell power generation equipmentInfo
- Publication number
- JPS63308876A JPS63308876A JP62145499A JP14549987A JPS63308876A JP S63308876 A JPS63308876 A JP S63308876A JP 62145499 A JP62145499 A JP 62145499A JP 14549987 A JP14549987 A JP 14549987A JP S63308876 A JPS63308876 A JP S63308876A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- fuel cell
- gas
- valve
- fuel gas
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0612—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、燃料電池と燃料改質器とを組合せた燃料電
池発電設備の起動、停止制御方法、特に起動、停止に対
応したガス切換え制御方法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for controlling start-up and stop of fuel cell power generation equipment that combines a fuel cell and a fuel reformer, and in particular a gas switching control corresponding to start-up and stop. Regarding the method.
まず第３図に頭記した燃料電池発電設備の系統図を示す
０図において、１は燃料電池、２は燃料改質器であり、
前記燃料電池１は燃料１ｔｌｌｊ １ ａ 、酸化剤′
ｉ！１１１ｂ、 １！解質１１１ｃ、燃料ガス室１ｄ、
酸化側室１ｅから成り、また燃料改質器２は改質原料の
気化器２ａ＋ 改質反応器２ｂを内蔵した燃焼炉２ｃに
バーナ２ｄを装備して構成されている。ここで燃料改質
器２の気化器２ａの入口にはポンプ３を介して改質原料
タンク４が配管接続され、バーナ２ｄには助燃料タンク
５．空気プロア６とともに燃料電池１の燃料ガス室１ｄ
の出口側から引出した燃料ガス出口管７が配管接続され
ている。なお８は燃焼炉２ｃの排気管である。また燃料
電池１の燃料ガス室１ｄに対し、その入口側には前記燃
料改質器２の改質反応器２ｂより引出した燃料ガス入口
管９．および不活性ガス源に通じる不活性ガス供給管１
０が接続されており、さらに前記の燃料ガス入口管９．
出口管７．不活性ガス供給管１０．および燃料電池１を
バイパスして燃料ガス入口管９と出口管７との間を結ぶ
バイパス管１１にはそれぞれ燃料ガス入口弁１２、出目
弁１３．不活性ガス供給弁１４．およびバイパス弁１５
が介装されている。なお１６は燃料電池１の酸化剤室１
ｅに反応空気を送気するブロアである。First, in Figure 0, which shows a system diagram of the fuel cell power generation equipment shown in Figure 3, 1 is a fuel cell, 2 is a fuel reformer,
The fuel cell 1 contains a fuel 1tllj 1a and an oxidizer'
i! 111b, 1! Solute 111c, fuel gas chamber 1d,
The fuel reformer 2 is composed of a combustion furnace 2c containing a reforming raw material vaporizer 2a+a reforming reactor 2b and equipped with a burner 2d. Here, a reforming raw material tank 4 is pipe-connected to the inlet of the vaporizer 2a of the fuel reformer 2 via a pump 3, and an auxiliary fuel tank 5. Fuel gas chamber 1d of fuel cell 1 together with air proar 6
A fuel gas outlet pipe 7 drawn out from the outlet side of the fuel gas outlet is connected to the fuel gas outlet pipe 7. Note that 8 is an exhaust pipe of the combustion furnace 2c. Further, on the inlet side of the fuel gas chamber 1d of the fuel cell 1, there is a fuel gas inlet pipe 9 drawn out from the reforming reactor 2b of the fuel reformer 2. and an inert gas supply pipe 1 leading to an inert gas source
0 is connected to the fuel gas inlet pipe 9.
Outlet pipe7. Inert gas supply pipe 10. A bypass pipe 11 that bypasses the fuel cell 1 and connects the fuel gas inlet pipe 9 and the outlet pipe 7 has a fuel gas inlet valve 12 and an outlet valve 13, respectively. Inert gas supply valve 14. and bypass valve 15
is interposed. Note that 16 is the oxidizer chamber 1 of the fuel cell 1.
This is a blower that supplies reaction air to e.
かかる燃料電池発電設備において、まず燃料電池の起動
準備時には燃料改質器２に対しそのバーナ２ｄに助燃料
１燃焼空気を供給して燃焼し、この状態で気化器２ａに
改質原料を供給する。これにより改質原料は気化器２ａ
で気化された後に改質反応器２ｂに入り、ここで改質触
媒との接触反応により水素リッチな燃料ガスに改質され
る。また改質された燃料ガスはバイパス管１１．開放状
態にあるバイパス弁１５を通じてバーナ２ｄに供給され
、ここでの燃焼により改質反応に必要な熱量を与えるよ
うになる。一方、この時点では燃料電池１の燃料ガス室
１ｄ内は不活性ガスが充填されており、かつ燃料ガス入
口弁１２．出口弁１３は閉じている。In such fuel cell power generation equipment, first, when preparing to start up the fuel cell, auxiliary fuel 1 combustion air is supplied to the burner 2d of the fuel reformer 2 for combustion, and in this state, reformed raw material is supplied to the vaporizer 2a. . As a result, the reformed raw material is transferred to the vaporizer 2a.
After being vaporized, it enters the reforming reactor 2b, where it is reformed into a hydrogen-rich fuel gas through a catalytic reaction with a reforming catalyst. Also, the reformed fuel gas is transferred to the bypass pipe 11. The fuel is supplied to the burner 2d through the bypass valve 15 which is in an open state, and combustion there provides the amount of heat necessary for the reforming reaction. On the other hand, at this point, the fuel gas chamber 1d of the fuel cell 1 is filled with inert gas, and the fuel gas inlet valve 12. Outlet valve 13 is closed.
次に起動準備の確立した前記状態から燃料電池１を起動
するには、燃料ガス室１ｄに対する燃料ガス入口弁１２
．出目弁１３を開き、バイパス弁１５を閉じるとともに
、酸化剤室１ｅに接続した空気プロア１６により反応空
気の供給を開始する。これにより燃料改質器２で改質生
成された燃料ガスは入口弁１２を通じて燃料電池の燃料
ガス室１ｄに導入され、ここでいままで燃料ガス室に封
じ込められていた不活性ガスを追い出してガス置換する
とともに、燃料電池１は起電反応により発電を開始する
。また燃料ガス室１ｄに供給された燃料ガスのうち起電
反応に関与しない余剰分はオフガスとして燃料ガス室１
ｄより出口弁１３を通じて燃料改質器２のバーナ２ｄに
供給され、燃焼により改質反応に必要な熱量を与える。Next, in order to start the fuel cell 1 from the state in which startup preparation has been established, the fuel gas inlet valve 12 for the fuel gas chamber 1d must be
．． The outlet valve 13 is opened, the bypass valve 15 is closed, and the air blower 16 connected to the oxidizer chamber 1e starts supplying reaction air. As a result, the fuel gas reformed in the fuel reformer 2 is introduced into the fuel gas chamber 1d of the fuel cell through the inlet valve 12, where it expels the inert gas that has been confined in the fuel gas chamber and gases the gas. At the same time as the replacement, the fuel cell 1 starts generating electricity through an electromotive reaction. In addition, the surplus portion of the fuel gas supplied to the fuel gas chamber 1d that does not participate in the electromotive reaction is used as off gas in the fuel gas chamber 1d.
d is supplied to the burner 2d of the fuel reformer 2 through the outlet valve 13, and is combusted to provide the amount of heat necessary for the reforming reaction.
一方、燃料電池を発電運転状態から停止する場合には、
燃料ガス入口弁１２．出口弁１３を閉じ、かつバイパス
弁１５を開いて燃料電池への燃料ガス供給を停止して起
動前の状態にするとともに、この過程で不活性ガス供給
弁１４を開放して燃料ガス室内に不活性ガスを供給して
室内を燃料ガスから不活性ガスにガス置換する。On the other hand, when stopping the fuel cell from power generation mode,
Fuel gas inlet valve 12. The outlet valve 13 is closed and the bypass valve 15 is opened to stop the fuel gas supply to the fuel cell and bring it into the pre-startup state, and in this process, the inert gas supply valve 14 is opened to remove waste in the fuel gas chamber. Activated gas is supplied to replace the fuel gas in the room with inert gas.
ここで上記した燃料電池の起動、停止時における従来の
制御方法によるガス切換え制御のタイムチャートを示す
と第２図のごとくであり、起動。FIG. 2 shows a time chart of gas switching control using the conventional control method when starting and stopping the fuel cell described above.
停止時には燃料ガス入口弁１２．出口弁１３．およびバ
イパス弁１５を同じタイミングで同時に切換え操作する
ようにしていた。When stopped, the fuel gas inlet valve 12. Outlet valve 13. and the bypass valve 15 are simultaneously switched and operated at the same timing.
ところで、上記した従来の燃料電池の起動、停止制御方
法では次記のような問題点がある。すなわち燃料ガス入
口弁１２．出口弁１３およびバイパス弁１５を同時に開
閉動作させると、答弁の開閉動作応答のずれ等も加わっ
て燃料電池側では燃料ガス室１ｄの内圧が瞬間的に大き
く変動する。このために燃料ガス室１ｄど酸化剤室１ｅ
との間に過大な差圧が発生し、この結果として電解質層
ＩＣを通じて反応ガスのクロスオーバーが生じたり、電
極が過大な差圧で破壊されたりする危険がある。また特
に起動時にはいままでの停止期間中に燃料ガス室ｌｄ内
に充填されていた不活性ガスが燃料に追い出されて一気
に燃料改質器２のバーナ２ｄに戻されるために、燃料不
足からバーナでの燃焼が不測に失火してしまうおそれが
ある。By the way, the conventional fuel cell start-up and stop control methods described above have the following problems. That is, the fuel gas inlet valve 12. When the outlet valve 13 and the bypass valve 15 are opened and closed at the same time, the internal pressure of the fuel gas chamber 1d instantaneously fluctuates greatly on the fuel cell side due to the difference in response of the opening and closing operation of the valve. For this purpose, the fuel gas chamber 1d and the oxidizer chamber 1e are
As a result, there is a danger that crossover of the reaction gas will occur through the electrolyte layer IC or that the electrodes will be destroyed due to the excessive pressure difference. In addition, especially at startup, the inert gas that had been filled in the fuel gas chamber ld during the previous stop period is expelled by the fuel and returned to the burner 2d of the fuel reformer 2 at once, so the burner is shut down due to fuel shortage. There is a risk that the combustion may unexpectedly misfire.
この発明は上記の点にかんがみ成されたものであり、そ
の目的は燃料電池の起動、停止時におけるガス切換えに
際して燃料ガス室と酸化剤室との間の過大な差圧、改質
器バーナの不測な失火発生を未然に防止して安全性の向
上を図るとともに、併せて燃料ガス室の不活性ガスによ
るガスｆｆｆｉが円滑に行えるようにした燃料電池発電
設備の起動。This invention has been made in consideration of the above points, and its purpose is to prevent excessive pressure differential between the fuel gas chamber and oxidizer chamber, and to reduce the pressure of the reformer burner when switching gases when starting or stopping a fuel cell. Start-up of fuel cell power generation equipment that aims to improve safety by preventing unexpected misfires, and also enables smooth gas fffi using inert gas in the fuel gas chamber.
停止制御方法を提供することにある。An object of the present invention is to provide a stop control method.
上記問題点を解決するために、この発明によれば、燃料
電池の起動時にはまず燃料ガス出口弁を開き、次いで入
口弁を開いた後にバイパス弁を閉じ、停止時にはまずバ
イパス弁を開いた後に入口弁を閉じ、ここで不活性ガス
供給系を通じて供給した不活性ガスで燃料ガス室内をガ
ス置換した後に出口弁を閉じるよう相互に時間差を与え
て答弁を開閉操作するようにしたものである。In order to solve the above problems, according to the present invention, when starting up a fuel cell, first open the fuel gas outlet valve, then open the inlet valve, and then close the bypass valve, and when stopping, first open the bypass valve, and then close the inlet valve. After the valve is closed and the inside of the fuel gas chamber is replaced with the inert gas supplied through the inert gas supply system, the outlet valve is closed.
上記の制御方法を採用することにより、まず燃料電池の
起動時には燃料ガス出口弁を開いた後に入口弁を開くの
で、弁の機械的な開放応答時間の遅れ等の影響を受ける
ことなく燃料ガス室内への燃料ガス導入による急激な内
圧の上昇を確実に避けることができ、さらに入口弁の開
放後に時間差を置いてバイパス弁を閉じることにより、
燃料ガス内に充填されていた不活性ガスを燃料改質器の
バーナに向けて追い出す過程でもバイパス弁を通じてバ
ーナへの燃料ガス供給が確保されており、したがってバ
ーナの不測な失火が防止できる。By adopting the above control method, when starting up the fuel cell, the fuel gas outlet valve is first opened and then the inlet valve is opened. By closing the bypass valve after a time lag after opening the inlet valve, it is possible to reliably avoid a sudden increase in internal pressure due to the introduction of fuel gas into the
Even in the process of expelling the inert gas filled in the fuel gas toward the burner of the fuel reformer, the supply of fuel gas to the burner is ensured through the bypass valve, thus preventing an unexpected misfire of the burner.
また停止時にもバイパス弁の開放後、燃料ガス出口弁に
先立って入口弁を閉じ、かつこの状態で不活性ガスによ
る燃料ガス室のガス置換を行うことにより、起動時と同
様に酸化剤室との間の過大な差圧の発生、燃料改質器の
バーナ失火を避けつつガス置換が円滑に行われるように
なる。In addition, even when stopped, after opening the bypass valve, the inlet valve is closed before the fuel gas outlet valve, and in this state, the gas in the fuel gas chamber is replaced with inert gas. Gas replacement can be performed smoothly while avoiding the generation of an excessive pressure difference between the fuel and fuel reformer burners and misfiring of the burner of the fuel reformer.
第１図はこの発明による燃料電池の起動、停止制御のタ
イムチャートを示すものであり、第３図とともに前記タ
イムチャートにしたがって燃料電池の起動、停止時にお
けるガス切換え動作を説明する。FIG. 1 shows a time chart for starting and stopping control of a fuel cell according to the present invention, and the gas switching operation when starting and stopping the fuel cell will be explained in accordance with the time chart in conjunction with FIG.
まず燃料電池の起動準備状態では、従来と同様に燃料改
質器２で改質原料が水素リンチな燃料ガスに改質された
上で開放状態にあるバイパス弁１５を経て改質器のバー
ナ２ｄに還流し、ここで燃焼して改質反応に必要な熱を
与えている。一方、この時点では燃料電池１の燃料ガス
入口弁１２．出口弁１３は閉じていて燃料ガス室１ｄの
内部に不活性ガスが充填されており、かつ不活性ガス供
給弁１４も閉じた状態にある。First, when the fuel cell is ready to start, the reformed raw material is reformed into hydrogen-rich fuel gas in the fuel reformer 2, as in the conventional case, and then passed through the bypass valve 15, which is in an open state, to the burner 2d of the reformer. It is refluxed and burned here to provide the heat necessary for the reforming reaction. On the other hand, at this point, the fuel gas inlet valve 12 of the fuel cell 1. The outlet valve 13 is closed and the inside of the fuel gas chamber 1d is filled with inert gas, and the inert gas supply valve 14 is also closed.
ここで燃料電池１を起動する際には、まず燃料ガス出口
弁１３を開き、所定の時間差ｔ１だけ遅れて入口弁１２
を開放する。これにより改質器２で得た燃料ガスが燃料
ガス室１ｄ内に導入されて不活性ガスを追い出してガス
置換するとともに、燃料電池１は酸化剤室１ｅに供給さ
れた反応空気とによる起電反応で発電を開始する。なお
この時点ではバイパス弁１５が開いていて燃料ガスの一
部はバイパス弁１５を通じて改質器のバーナ２ｄに供給
継続されており、前記のガス置換により燃料ガス室から
追い出された不活性ガスでバーナが不測に失火すること
はないし、また燃料ガス室内部での急激な内圧上昇の発
生もない、一方、入口弁１２の開放後に燃料ガス室１ｄ
内が完全にガス置換されるに要する時間ｔ２だけ遅れて
次にバイパス弁１５が閉じ、改質器２で生成した燃料ガ
スの全量を燃料電池の燃料ガス室１ｄに供給して定常発
電に移行させるとともに、そのオフガスを改質器２のバ
ーナ２ｄに戻して改質動作を継続させる。When starting up the fuel cell 1, first the fuel gas outlet valve 13 is opened, and after a delay of a predetermined time difference t1, the inlet valve 13 is opened.
to open. As a result, the fuel gas obtained in the reformer 2 is introduced into the fuel gas chamber 1d to expel the inert gas and replace the gas, and the fuel cell 1 generates electricity due to the reaction air supplied to the oxidizer chamber 1e. The reaction starts generating electricity. At this point, the bypass valve 15 is open and a portion of the fuel gas continues to be supplied to the burner 2d of the reformer through the bypass valve 15. The burner will not unexpectedly misfire, and there will be no sudden increase in internal pressure inside the fuel gas chamber.On the other hand, after opening the inlet valve 12, the fuel gas chamber 1d
After a delay of time t2 required for complete gas replacement in the fuel cell, the bypass valve 15 closes, and the entire amount of fuel gas generated in the reformer 2 is supplied to the fuel gas chamber 1d of the fuel cell, and steady power generation begins. At the same time, the off-gas is returned to the burner 2d of the reformer 2 to continue the reforming operation.
一方、燃料電池を停止する場合には、まずバイパス弁１
５を開放し、改質器２で生成した燃料ガスの一部をバイ
パス弁１５を通じて改質器のバーナ２ｄにバイパス供給
させる０次に時間差ｔ３だけ遅れて燃料ガス入口弁１２
を閉じ、この状態で不活性ガス供給弁１４を開放して燃
料ガス室Ｉｄ内を不活性ガスでガス置換する。さらにこ
のガス置換に要する時間ｔ４だけ遅れて燃料ガス出目弁
１３を閉じて燃料ガス室ｌｄ内に不活性ガスを封じ込め
る。これによりガス置換が円滑に行えるとともに、燃料
ガス室１ｄの急激な内圧変化、およびこれに起因する酸
化剤室１ｅとの間の過大な差圧発生、並びに改質器側で
の燃料ガス供給中断によるバーナ２ｄの不測な失火を確
実に防止することができる。On the other hand, when stopping the fuel cell, first bypass valve 1
5 is opened and a part of the fuel gas generated in the reformer 2 is bypass-supplied to the burner 2d of the reformer through the bypass valve 15.Next, the fuel gas inlet valve 12 is opened with a delay of time difference t3.
is closed, and in this state, the inert gas supply valve 14 is opened to replace the inside of the fuel gas chamber Id with inert gas. Furthermore, after a delay of time t4 required for this gas replacement, the fuel gas outlet valve 13 is closed to seal the inert gas in the fuel gas chamber ld. This allows for smooth gas replacement, and also prevents sudden internal pressure changes in the fuel gas chamber 1d, resulting in excessive pressure differential between the fuel gas chamber 1e and the oxidizer chamber 1e, and interruption of fuel gas supply on the reformer side. It is possible to reliably prevent an unexpected misfire of the burner 2d.
以上述べたようにこの発明によれば、燃料電池の起動時
にはまず燃料ガス出口弁を開き、次いで入口弁を開いた
後にバイパス弁を閉じ、停止時にはまずバイパス弁を開
いた後に入口弁を閉じ、ここで不活性ガス供給系を通じ
て供給した不活性ガスで燃料ガス室内をガス置換した後
に出口弁を閉じるように相互に時間差を与えて答弁を開
閉操作することにより、燃料電池の起動、停止に際して
燃料ガス室の内圧の急激な変動、およびこれに起因する
酸化剤室との間の過大な差圧の発生、並びに燃料改質器
のバーナでの不測な失火を防止して安全性の改善を図り
つつ、併せて燃料ガス室の燃料ガスと不活性ガスとの間
のガス置換を円滑に行うことができる。As described above, according to the present invention, when starting up a fuel cell, the fuel gas outlet valve is first opened, then the inlet valve is opened, and then the bypass valve is closed; when the fuel cell is stopped, the bypass valve is first opened, and then the inlet valve is closed; After replacing the gas in the fuel gas chamber with the inert gas supplied through the inert gas supply system, the outlet valve is closed by opening and closing the response valves with a time difference between them. We aim to improve safety by preventing sudden changes in the internal pressure of the gas chamber, the resulting excessive pressure difference between the gas chamber and the oxidizer chamber, and accidental misfires in the fuel reformer burner. At the same time, gas replacement between the fuel gas and the inert gas in the fuel gas chamber can be performed smoothly.
第１図は本発明の実施例による燃料電池の起動。
停止時におけるガス切換え制御のタイムチャート、第２
図は第１図に対応する従来の制御方法によるタイムチャ
ート、第３図は燃料電池発電設備の系統図である０図に
おいて、
１：燃料電池、１ｄ：燃料ガス室、２：燃料改質器、２
ｄ；燃焼バーナ、４；改質原料タンク、１０：不活性ガ
ス供給管、１２：燃料ガス入口弁、１３：燃料ガス出口
弁、１４：不活性ガス供給弁、１５：燃料第１図
第２図FIG. 1 shows the start-up of a fuel cell according to an embodiment of the present invention. Time chart of gas switching control during stoppage, 2nd
The figure is a time chart according to the conventional control method corresponding to Figure 1, and Figure 3 is a system diagram of fuel cell power generation equipment. In Figure 0, 1: fuel cell, 1d: fuel gas chamber, 2: fuel reformer ,2
d: Combustion burner, 4: Reforming raw material tank, 10: Inert gas supply pipe, 12: Fuel gas inlet valve, 13: Fuel gas outlet valve, 14: Inert gas supply valve, 15: Fuel Figure 1, Figure 2 figure
Claims (1)
を得るバーナー燃焼方式の燃料改質器と、燃料電池の停
止時に燃料ガス室内に不活性ガスを充填する不活性ガス
供給系とを備え、かつ燃料電池の燃料ガス室と燃料改質
器との間を結ぶ燃料ガス配管系に燃料ガス入口弁、出口
弁、およびバイパス弁を介装した燃料電池発電設備に対
し、燃料電池の起動時にはまず燃料ガス出口弁を開き、
次いで入口弁を開いた後にバイパス弁を閉じ、停止時に
はまずバイパス弁を開いた後に入口弁を閉じ、ここで不
活性ガス供給系を通じて供給した不活性ガスで燃料ガス
室内をガス置換した後に出口弁を閉じるよう相互に時間
差を与えて各弁を開閉操作することを特徴とする燃料電
池発電設備の起動、停止制御方法。A fuel cell, a burner combustion type fuel reformer that burns the off-gas of the fuel cell to obtain reforming reaction heat, and an inert gas supply system that fills the fuel gas chamber with inert gas when the fuel cell is stopped. For fuel cell power generation equipment equipped with fuel gas inlet valves, outlet valves, and bypass valves in the fuel gas piping system connecting the fuel gas chamber of the fuel cell and the fuel reformer, start-up of the fuel cell is required. Sometimes, first open the fuel gas outlet valve,
Next, the inlet valve is opened and then the bypass valve is closed. When stopping, the bypass valve is first opened and then the inlet valve is closed. After replacing the gas in the fuel gas chamber with the inert gas supplied through the inert gas supply system, the outlet valve is closed. A method for controlling start-up and stop of fuel cell power generation equipment, characterized by opening and closing each valve with a time difference so as to close the valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62145499A JPH0690930B2 (en) | 1987-06-11 | 1987-06-11 | Start / stop control method for fuel cell power generation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62145499A JPH0690930B2 (en) | 1987-06-11 | 1987-06-11 | Start / stop control method for fuel cell power generation equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63308876A true JPS63308876A (en) | 1988-12-16 |
| JPH0690930B2 JPH0690930B2 (en) | 1994-11-14 |
Family
ID=15386672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62145499A Expired - Lifetime JPH0690930B2 (en) | 1987-06-11 | 1987-06-11 | Start / stop control method for fuel cell power generation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690930B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003096460A1 (en) * | 2002-05-14 | 2003-11-20 | Nissan Motor Co., Ltd. | Fuel cell system and related startup method |
| JP2006318714A (en) * | 2005-05-11 | 2006-11-24 | Aisin Seiki Co Ltd | Fuel cell system |
| JP2010053005A (en) * | 2008-08-29 | 2010-03-11 | Aisin Seiki Co Ltd | Reforming apparatus and fuel cell system |
| JP2010135287A (en) * | 2008-11-04 | 2010-06-17 | Panasonic Corp | Fuel cell system |
-
1987
- 1987-06-11 JP JP62145499A patent/JPH0690930B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003096460A1 (en) * | 2002-05-14 | 2003-11-20 | Nissan Motor Co., Ltd. | Fuel cell system and related startup method |
| CN1322621C (en) * | 2002-05-14 | 2007-06-20 | 日产自动车株式会社 | Fuel cell system and related startup method |
| JP2006318714A (en) * | 2005-05-11 | 2006-11-24 | Aisin Seiki Co Ltd | Fuel cell system |
| JP2010053005A (en) * | 2008-08-29 | 2010-03-11 | Aisin Seiki Co Ltd | Reforming apparatus and fuel cell system |
| JP2010135287A (en) * | 2008-11-04 | 2010-06-17 | Panasonic Corp | Fuel cell system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0690930B2 (en) | 1994-11-14 |
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