JPH0810601B2 - Molten carbonate fuel cell power plant - Google Patents
Molten carbonate fuel cell power plantInfo
- Publication number
- JPH0810601B2 JPH0810601B2 JP4109625A JP10962592A JPH0810601B2 JP H0810601 B2 JPH0810601 B2 JP H0810601B2 JP 4109625 A JP4109625 A JP 4109625A JP 10962592 A JP10962592 A JP 10962592A JP H0810601 B2 JPH0810601 B2 JP H0810601B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- reformer
- combustor
- cathode
- molten carbonate
- 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.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims description 77
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims description 50
- 238000002485 combustion reaction Methods 0.000 claims description 39
- 238000010248 power generation Methods 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 7
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 3
- 238000002407 reforming Methods 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 24
- 239000000567 combustion gas Substances 0.000 description 13
- 229910002092 carbon dioxide Inorganic materials 0.000 description 12
- 239000001569 carbon dioxide Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000006057 reforming reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は外部改質型の溶融炭酸塩
型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 an external reforming molten carbonate fuel cell power plant .
【０００２】[0002]
【従来の技術】まず、一般的な外部改質型の溶融炭酸塩
型燃料電池発電プラントの系統を図２によって説明す
る。2. Description of the Related Art First, a general external reforming molten carbonate fuel cell power plant system will be described with reference to FIG.
【０００３】炭化水素系燃料と水蒸気とを混合したプロ
セスガスは改質器反応部４で水素リッチのガスに改質さ
れ、生成された水素は燃料電池１のアノード２に供給さ
れる。ここでカソード３に供給された酸素および二酸化
炭素と電気化学的に反応し発電を行う。反応後のアノー
ド排ガスは約１０％の水素を含むので、改質器燃焼部５
での燃料として使用され、改質反応に必要な熱を改質器
反応部に供給する。改質器燃焼部５の燃焼排ガスは圧縮
機８で加圧された空気と混合されカソード３に供給され
る。ここで酸素と二酸化炭素を消費したカソード排ガス
は、一部をカソード入口温度制御と二酸化炭素利用率向
上のためにカソードブロワ６によって昇圧しカソード循
環ライン７を通ってリサイクルされ、残りは補助燃焼器
１０を経てタービン９を駆動して系外へ排出される。A process gas obtained by mixing a hydrocarbon fuel and steam is reformed into a hydrogen-rich gas in the reformer reaction section 4, and the produced hydrogen is supplied to the anode 2 of the fuel cell 1. Here, oxygen and carbon dioxide supplied to the cathode 3 are electrochemically reacted to generate electricity. Since the anode exhaust gas after the reaction contains about 10% hydrogen, the reformer combustion section 5
It is used as a fuel in the reformer and supplies the heat necessary for the reforming reaction to the reformer reaction section. The combustion exhaust gas from the reformer combustion section 5 is mixed with the air pressurized by the compressor 8 and supplied to the cathode 3. Here, the cathode exhaust gas that has consumed oxygen and carbon dioxide is partially repressurized by the cathode blower 6 to control the cathode inlet temperature and improve the carbon dioxide utilization rate, and is recycled through the cathode circulation line 7, while the rest is an auxiliary combustor. The turbine 9 is driven via 10 to be discharged to the outside of the system.
【０００４】燃料電池負荷変動時の動作特性について説
明する。燃料電池本体１は電気化学的に発電を行なって
いるので負荷追従性に優れているが、燃料電池発電シス
テムとしてはアノードガスやカソードガスの流動遅れ等
の影響でこれらのガス量の変化に時間的な遅れを生ず
る。例えば、燃料電池のインバータ負荷の減少指令に対
して、プロセスガスの供給を即座に減少させたとしても
配管や機器のボリュームの影響でアノード２の入口での
プロセスガスの減少には遅れを生ずるので、燃料電池１
が瞬時に負荷追従することにより一時的にアノード２で
は水素が過剰となりアノード排ガスの発熱量が増大す
る。これに対し、アノード排ガスを燃料として使用して
いる改質器燃焼部５ではプロセスガスの減少によって改
質器反応部４の吸熱量が減少するにも関わらず、燃焼熱
量が増大するので燃焼ガス温度が異常に上昇して反応管
等に損傷を与えることになる。The operation characteristics when the fuel cell load changes will be described. Since the fuel cell main body 1 generates electricity electrochemically, it excels in load followability. Cause a delay. For example, even if the supply of the process gas is immediately reduced in response to a command to reduce the inverter load of the fuel cell, the reduction of the process gas at the inlet of the anode 2 is delayed due to the influence of the volume of piping and equipment. , Fuel cell 1
As a result of instantaneous load following, the hydrogen in the anode 2 becomes temporarily excessive and the amount of heat generated by the anode exhaust gas increases. On the other hand, in the reformer combustion section 5 that uses the anode exhaust gas as fuel, the combustion heat amount increases although the endothermic amount of the reformer reaction section 4 decreases due to the decrease in process gas. The temperature rises abnormally and damages the reaction tube and the like.
【０００５】従来の改質器燃焼ガス温度の制御には特開
昭５８−１６３１８３号に記載のように、余剰アノード
排ガスを導管１７で分流しフレアスタック１８等で燃焼
した後系外に排出するか、あるいは空燃比を増加させて
燃焼ガス温度の制御を行なうかするのが一般的である。In the conventional control of the reformer combustion gas temperature, as described in JP-A-58-163183, the surplus anode exhaust gas is split in the conduit 17, burned in the flare stack 18, etc., and then discharged to the outside of the system. Or, generally, the air-fuel ratio is increased to control the combustion gas temperature.
【０００６】また、起動時の燃料電池の昇温にはヒータ
等で加熱した不活性ガスを循環させるか（図示していな
い）、直接ヒータ１６で加熱するのが一般的であった。Further, in order to raise the temperature of the fuel cell at the time of startup, it is general to circulate an inert gas heated by a heater or the like (not shown) or directly heat by the heater 16.
【０００７】[0007]
【発明が解決しようとする課題】しかし、上記のような
従来の改質器燃焼ガスの温度制御法においては、次のよ
うな問題がある。However, the above-mentioned conventional temperature control method for the reformer combustion gas has the following problems.
【０００８】まず、空燃比を増加させて改質器燃焼ガス
温度を制御する場合には、一時的に定格値以上の空気を
改質器燃焼部に供給する必要があり、圧縮機および改質
器燃焼部は定格値以上の容量を備えなければならないの
で、システム効率の低下とコスト上昇とを招くことにな
る。First, in the case of controlling the reformer combustion gas temperature by increasing the air-fuel ratio, it is necessary to temporarily supply air having a rated value or more to the reformer combustion section. Since the burner section must have a capacity equal to or higher than the rated value, the system efficiency is lowered and the cost is increased.
【０００９】また、余剰アノード排ガスを分流廃棄して
燃焼ガス温度の制御を行なう方法では、速やかに燃焼ガ
ス温度を低下させ得る半面、カソードでは二酸化炭素が
不足して電解質が劣化する可能性がある。例えば、新し
い設備ではアノードの燃料利用率が８０％で燃料電池負
荷減少率が１０％／分の場合、燃料電池アノード排ガス
に対して、改質器燃焼部からの必要分流率は２５％以
上、燃料電池カソードからの許容分流率は２５％以下と
なる。しかし二酸化炭素分圧の低下や電解質経年劣化を
考慮すると燃料電池カソードからの許容分流率は数％に
過ぎなくなり、燃料電カソード向けの二酸化炭素補給装
置が必要になる。Further, in the method of controlling the combustion gas temperature by splitting and discarding the surplus anode exhaust gas, the combustion gas temperature can be quickly lowered, but on the other hand, there is a possibility that the carbon dioxide becomes insufficient at the cathode and the electrolyte deteriorates. . For example, in the new facility, if the fuel utilization rate of the anode is 80% and the fuel cell load reduction rate is 10% / min, the required diversion rate from the reformer combustion section is 25% or more for the fuel cell anode exhaust gas, The allowable diversion rate from the fuel cell cathode is 25% or less. However, in consideration of the decrease in carbon dioxide partial pressure and deterioration over time of the electrolyte, the allowable diversion rate from the fuel cell cathode is only a few percent, and a carbon dioxide replenishing device for the fuel cell cathode is required.
【００１０】一方、燃料電池起動時の昇温に関しては、
昇温媒体に不活性ガスを使用すると大量の不活性ガスが
必要であり、また燃料ガスとの切り替え時に極間差圧が
発生するなどの問題がある。また、ヒータによる直接加
熱では大容量のヒータを設置する必要があり実用プラン
トでは設備上実現困難である。On the other hand, regarding the temperature rise at the time of starting the fuel cell,
If an inert gas is used as the temperature raising medium, a large amount of inert gas is required, and there is a problem that a pressure difference between electrodes is generated when switching to the fuel gas. Further, it is necessary to install a large-capacity heater in the direct heating by the heater, which is difficult to realize in a practical plant in terms of equipment.
【００１１】本発明の第１の目的は、燃料電池の負荷の
減少時における改質器燃焼部の燃焼ガス温度の制御とカ
ソード供給ガス中の二酸化炭素濃度の確保である。A first object of the present invention is to control the temperature of the combustion gas in the reformer combustion section and to secure the carbon dioxide concentration in the cathode supply gas when the load on the fuel cell is reduced.
【００１２】本発明の第２の目的は、実用プラントに適
した発電プラント起動時における燃料電池昇温装置の提
供にある。A second object of the present invention is to provide a fuel cell temperature raising device suitable for a practical plant when the power plant is started.
【００１３】[0013]
【課題を解決するための手段】前記第１の目的は、前記
改質器燃焼部の排ガスを前記燃料電池のカソードに供給
する導管に設けた燃焼器と、前記燃料電池アノード出口
から制御弁を介して前記燃焼器に至り前記改質器燃焼部
をバイパスするバイパス導管とを備えたことことによっ
て達成される。また前記第２の目的は発電システム起動
時に起動用燃料を上記燃焼器に導入して燃料電池の昇温
を行うことによって達成される。Means for Solving the Problems] The first object, the
Supply the exhaust gas from the reformer combustion section to the cathode of the fuel cell
A combustor which is provided in the conduit and said fuel said Ri optimum from the battery anode outlet to said combustor via a control valve reformer combustion part for
It is accomplished by further comprising a bypass conduit that bypasses a. The second object is achieved by introducing a starting fuel into the combustor to raise the temperature of the fuel cell when the power generation system is started.
【００１４】[0014]
【作用】本発明によれば、改質器燃焼部に供給される燃
料電池アノード排ガスの流量制御を、バイパス導管中に
備えられた制御弁を使用したバイパス流量制御によって
行う。これによって、燃料電池負荷変動による改質器燃
焼部の燃焼ガス温度の変動を許容範囲内に抑えることが
可能になる。According to the present invention, the flow rate control of the fuel cell anode exhaust gas supplied to the reformer combustion section is performed by the bypass flow rate control using the control valve provided in the bypass conduit. This makes it possible to suppress fluctuations in the combustion gas temperature of the reformer combustion section due to fuel cell load fluctuations within an allowable range.
【００１５】次に、上記バイパスアノード排ガスを燃焼
器で燃焼させ、発生二酸化炭素を系外に排出することな
く燃料電池カソードに供給する。これにより、改質器燃
焼排ガスと一緒にして燃料電池アノード排ガス全量分の
二酸化炭素を燃料電池カソードに供給することが可能に
なる。したがって燃料電池カソードの二酸化炭素不足の
問題は解決される。この場合、改質器燃焼排ガスを、独
立導管で直接燃料電池カソードへ供給せず、恐らくは改
質器のそば近くに配置される上記燃焼器に供給すること
によって発電システムの簡素化が計られる。Next, the bypass anode exhaust gas is burned in the combustor, and the generated carbon dioxide is supplied to the fuel cell cathode without being discharged to the outside of the system. As a result, it becomes possible to supply carbon dioxide in the entire amount of the fuel cell anode exhaust gas together with the reformer combustion exhaust gas to the fuel cell cathode. Therefore, the problem of carbon dioxide shortage of the fuel cell cathode is solved. In this case, the reformer flue gas is not directly supplied to the fuel cell cathode by a separate conduit, but is preferably supplied to the combustor located near the reformer to simplify the power generation system.
【００１６】また、上記燃焼器に触媒燃焼器を用いるこ
とにより、比較的低い温度で効率よく上記アノード排ガ
スを燃焼させることが可能となる。燃焼触媒を約７００
℃の燃料電池カソード排ガスの一部のリサイクルガスで
常時加熱する。これによって触媒燃焼器は安定な運転を
続けることが可能になる。Further, by using a catalytic combustor for the combustor, it becomes possible to efficiently combust the anode exhaust gas at a relatively low temperature. About 700 combustion catalyst
It is constantly heated with a part of the recycled gas of the fuel cell cathode exhaust gas at ℃. This allows the catalytic combustor to continue stable operation.
【００１７】バイパスアノード排ガス燃焼を目的に設置
した燃焼器は、天然ガス燃料コールドスタートを可能に
することによって、発電システム起動時の燃料電池昇温
に利用できる。これによって、大量の不活性ガスおよび
その昇温設備が不要になり、燃料ガスとの切替え問題も
解決されることになる。あるいは、実用プラントでは設
備上実現困難と思われる燃料電池用ヒータも不要とな
る。The combustor installed for the purpose of the bypass anode exhaust gas combustion can be used for raising the temperature of the fuel cell at the time of starting the power generation system by enabling the natural gas fuel cold start. This eliminates the need for a large amount of inert gas and its heating facility, and solves the problem of switching to fuel gas. Alternatively, the fuel cell heater, which is difficult to realize in a practical plant, becomes unnecessary.
【００１８】[0018]
【実施例】以下、本発明の一実施例を図１によって説明
する。図１において、１〜１０は前述した図２の従来技
術の構成と同様である。燃焼器１３を図１に示すように
改質器燃焼部５の燃焼排ガスがカソード３に供給される
系に配置する。改質器燃焼部５の燃焼ガス温度を制御す
るための余剰アノード排ガス用バイパス１１は、アノー
ド出口から制御弁１２を経由して燃焼器１３に至る。改
質器燃焼部５の燃焼ガス温度の制御は燃焼ガス温度が設
定温度より上昇した場合に温度調節器１４の指示に従っ
た制御弁１２がアノード排ガスのバイパス流量を増やす
よう調節することによって行なう。バイパスされたアノ
ード排ガスは、燃焼器１３で未焼ガスを燃焼させた後カ
ソードに供給される。こうすれば改質器燃焼部の燃焼ガ
ス温度を制御すると同時にカソードでの二酸化炭素不足
を防止することが可能になる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 to 10 are the conventional techniques of FIG. 2 described above.
It is similar to the surgical configuration. As shown in FIG.
The combustion exhaust gas from the reformer combustion section 5 is supplied to the cathode 3.
Place it in the system. The surplus anode exhaust gas bypass 11 for controlling the combustion gas temperature of the reformer combustion section 5 reaches the combustor 13 from the anode outlet via the control valve 12. The control of the combustion gas temperature of the reformer combustion section 5 is performed by adjusting the control valve 12 according to the instruction of the temperature controller 14 so as to increase the bypass flow rate of the anode exhaust gas when the combustion gas temperature rises above the set temperature. . The bypassed anode exhaust gas is supplied to the cathode after burning the unburned gas in the combustor 13. This makes it possible to control the combustion gas temperature in the reformer combustion section and at the same time prevent carbon dioxide shortage at the cathode.
【００１９】また、前記実施例の燃焼器１３を触媒燃焼
器にすることにより、低カロリーで、しかも燃料電池の
負荷変動によって潜在的発熱量が２０〜３０％も変化す
るアノード排ガスを安定的に燃焼させることが可能にな
る。ここでは、燃料電池負荷が軽い時や変動時の可燃ガ
スの少ない場合にも燃焼触媒を作動温度に保持するため
の熱源としてガス温度７００℃のカソードリサイクルガ
スを利用する。Further, by making the combustor 13 of the above embodiment a catalytic combustor, the anode exhaust gas which is low in calorie and whose potential calorific value changes by 20 to 30% due to the load fluctuation of the fuel cell can be stabilized. It becomes possible to burn. Here, the cathode recycle gas having a gas temperature of 700 ° C. is used as a heat source for keeping the combustion catalyst at the operating temperature even when the fuel cell load is light or when the combustible gas is small when the load changes.
【００２０】つぎに、図１に示す燃料電池発電システム
の、起動時における燃料電池１の昇温方法について説明
する。まず、燃焼器１３の燃焼触媒が作動温度に達する
まで改質器燃焼部５の排ガスと燃焼器１３が内包するヒ
ータの一方あるいは両方とで触媒を加熱する。上記燃焼
触媒が作動温度に達した時点で天然ガス等の燃料と空気
を導入して燃焼させ、その燃焼排ガスをカソード３に供
給し燃料電池１の昇温を行なう。ここで、カソードブロ
ワ６を用いてカソード排ガスをカソード入口に循環し、
カソード内ガスの流速を上げて熱伝達率を向上させれば
更に燃料電池１の昇温時間を短縮することができる。Next, a method of raising the temperature of the fuel cell 1 at the time of starting the fuel cell power generation system shown in FIG. 1 will be described. First, the exhaust gas of the reformer combustion section 5 and one or both of the heaters included in the combustor 13 heat the catalyst until the combustion catalyst of the combustor 13 reaches the operating temperature. When the combustion catalyst reaches the operating temperature, fuel such as natural gas and air are introduced and burned, and the combustion exhaust gas is supplied to the cathode 3 to raise the temperature of the fuel cell 1. Here, using the cathode blower 6, the cathode exhaust gas is circulated to the cathode inlet,
If the flow rate of the gas in the cathode is increased to improve the heat transfer coefficient, the temperature rising time of the fuel cell 1 can be further shortened.
【００２１】このように本発明によれば、燃焼器１３を
燃料電池１の昇温と、余剰アノード排ガスの燃焼との両
方に利用することが可能でありシステム系統の簡略化に
も寄与することができる。As described above, according to the present invention, the combustor 13 can be used both for raising the temperature of the fuel cell 1 and for combusting the surplus anode exhaust gas, which also contributes to simplification of the system system. You can
【００２２】[0022]
【発明の効果】本発明によれば、燃料電池の負荷変動時
における改質器燃焼部の燃焼ガス温度の制御は、燃料電
池アノード排ガスパイパスライン中の制御弁を、改質器
燃焼部検出温度の指示に応じて制御することによって達
成される。またカソード供給ガス中の二酸化炭素濃度
は、バイパスアノード排ガスを燃焼器で燃焼させた後
に、改質器燃焼部燃焼排ガスと一緒に燃料電池カソード
へ供給することにより充分確保される。この場合、改質
器燃焼部燃焼排ガスを独立した導管によらず、上記燃焼
器を経由させて燃料電池カソードへ供給することにより
発電プラントの簡素化が達成される。According to the present invention, the control of the combustion gas temperature of the reformer combustion section when the load of the fuel cell fluctuates is controlled by setting the control valve in the fuel cell anode exhaust gas bypass line to the temperature detected by the reformer combustion section. It is achieved by controlling according to the instructions. Further, the carbon dioxide concentration in the cathode supply gas is sufficiently ensured by burning the bypass anode exhaust gas in the combustor and then supplying it to the fuel cell cathode together with the reformer combustion part combustion exhaust gas. In this case, the simplification of the power generation plant is achieved by supplying the combustion exhaust gas from the reformer combustor to the fuel cell cathode through the combustor instead of using an independent conduit.
【００２３】また、上記燃焼器に触媒燃焼器を用い、燃
料電池カソードリサイクルガスを使って燃焼触媒加熱を
行うことにより、安定な定常運転を達成できる。また燃
料電池カソードリサイクルラインを燃焼器に導くことに
より、発電プラントの簡素化が計られる。A stable steady operation can be achieved by using a catalytic combustor as the combustor and heating the combustion catalyst by using the fuel cell cathode recycled gas. In addition, the power generation plant can be simplified by introducing the fuel cell cathode recycling line to the combustor.
【００２４】つぎに、実用プラントに適した発電プラン
ト起動時における燃料電池昇温装置は、上記燃焼器に天
然ガス燃料コールドスタート可能なものを使うことによ
って提供可能である。これにより、大量の不活性ガスと
その昇温設備、または燃料電池用ヒータが不要になる。
さらに、大量の不活性ガスを燃料ガスに切替える必要が
なくなり、切替え時間省略とカソードブロワ利用による
熱伝達率向上とによって起動時間が大幅に短縮される。Next, a fuel cell temperature raising device suitable for a practical plant at the time of starting a power plant can be provided by using a natural gas fuel cold start type combustor. This eliminates the need for a large amount of inert gas and its heating facility, or a fuel cell heater.
Furthermore, it is not necessary to switch a large amount of inert gas to fuel gas, and the start-up time is greatly shortened by omitting the switching time and improving the heat transfer coefficient by using the cathode blower.
【図１】この発明の一実施例による溶融炭酸塩型燃料電
池発電システムを示す系統図である。FIG. 1 is a system diagram showing a molten carbonate fuel cell power generation system according to an embodiment of the present invention.
【図２】一般的な溶融炭酸塩型燃料電池発電システムを
示す系統図である。FIG. 2 is a system diagram showing a general molten carbonate fuel cell power generation system.
１ 燃料電池 ２ アノード ３ カソード ４ 改質器反応部 ５ 改質器燃焼部 ６ カソードブロワ ７ カソード循環ライン １１ アノード排ガスバイパスライン １２ 制御弁 １３ 燃焼器 １４ 温度調節器 １５ カソードガス供給ライン 1 Fuel Cell 2 Anode 3 Cathode 4 Reformer Reaction Section 5 Reformer Combustion Section 6 Cathode Blower 7 Cathode Circulation Line 11 Anode Exhaust Gas Bypass Line 12 Control Valve 13 Combustor 14 Temperature Controller 15 Cathode Gas Supply Line
───────────────────────────────────────────────────── フロントページの続き (72)発明者 難波 茂昭 茨城県日立市幸町３丁目１番１号 株式会 社 日立製作所 日立工場内 (56)参考文献 特開 昭62−80968（ＪＰ，Ａ) 特開 昭60−165063（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeaki Namba 3-1-1 Sachimachi, Hitachi City, Ibaraki Prefecture Hitachi Ltd. Hitachi factory (56) Reference JP 62-80968 (JP, A) JP 60-165063 (JP, A)
Claims (5)
炭化水素系燃料を改質し水素を生成する反応部および前
記反応部加熱用の燃焼部を有する改質器と、前記改質器
反応部で生成した水素を前記燃料電池のアノードに供給
する導管と、前記燃料電池のアノード排ガスを前記改質
器燃焼部に供給する導管と、前記改質器燃焼部の排ガス
を前記燃料電池のカソードに供給する導管と、前記燃料
電池のカソードおよび前記改質器燃焼部に空気を供給す
る空気供給源とを備えた溶融炭酸塩型燃料電池発電プラ
ントにおいて、前記改質器燃焼部の排ガスを前記燃料電池のカソードに
供給する導管 に設けた燃焼器と、前記燃料電池アノード
出口から制御弁を介して前記燃焼器に至り前記改質器燃
焼部をバイパスするバイパス導管とを備えたことを特徴
とする溶融炭酸塩型燃料電池発電プラント。1. A fuel cell comprising a molten carbonate as an electrolyte,
A reformer having a reaction part for reforming a hydrocarbon-based fuel to generate hydrogen and a combustion part for heating the reaction part, and a conduit for supplying the hydrogen generated in the reformer reaction part to the anode of the fuel cell. A conduit for supplying the anode exhaust gas of the fuel cell to the reformer combustion section, a conduit for supplying the exhaust gas of the reformer combustion section to the cathode of the fuel cell, the cathode of the fuel cell and the reformer. Molten Carbonate Fuel Cell Power Generation Platform with Air Supply Source for Supplying Air to Combustor Combustion Section
In cement, the exhaust gases of the reformer combustion section to the cathode of the fuel cell
A combustor which is provided in the conduit for supplying, Itaru Ri the reformer fuel to the combustor through the control valve from the fuel cell anode outlet
Molten carbonate fuel cell power plant, characterized in that a bypass conduit that bypasses the baked part.
質器燃焼部の検出温度に応じて前記燃料電池アノード排
ガスのバイパス量を制御する手段であることを特徴とす
る溶融炭酸塩型燃料電池発電プラント。2. The molten carbonate fuel according to claim 1, wherein the control valve is means for controlling a bypass amount of the fuel cell anode exhaust gas in accordance with a detected temperature of the reformer combustion section. Battery power plant .
焼器であることを特徴とする溶融炭酸塩型燃料電池発電
プラント。3. The combustor according to claim 1, wherein the combustor is a catalytic burner.
Molten carbonate fuel cell power generation characterized by being a calciner
Plant .
燃焼触媒を加熱する前記燃料電池カソードのリサイクル
ガスの導管を設けたことを特徴とする溶融炭酸塩型燃料
電池発電プラント。 4. The inside of the catalytic combustor according to claim 3 ,
Recycling of said fuel cell cathode heating a combustion catalyst
A molten carbonate fuel cell power plant characterized by having a gas conduit .
に前記燃料電池を昇温させる起動用燃料を前記燃焼器に
導入する導管を設けたことを特徴とする溶融炭酸塩型燃
料電池発電プラント。5. The power plant start-up according to claim 1 .
To the combustor the starting fuel for raising the temperature of the fuel cell
A molten carbonate fuel cell power plant, which is provided with a conduit for introduction .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4109625A JPH0810601B2 (en) | 1992-04-28 | 1992-04-28 | Molten carbonate fuel cell power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4109625A JPH0810601B2 (en) | 1992-04-28 | 1992-04-28 | Molten carbonate fuel cell power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05303971A JPH05303971A (en) | 1993-11-16 |
| JPH0810601B2 true JPH0810601B2 (en) | 1996-01-31 |
Family
ID=14515034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4109625A Expired - Fee Related JPH0810601B2 (en) | 1992-04-28 | 1992-04-28 | Molten carbonate fuel cell power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810601B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016094026A1 (en) | 2014-12-09 | 2016-06-16 | Lubrizol Advanced Materials, Inc. | Additive to prevent phase separation of low profile additive in unsaturated thermoset polyester compositions |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005190962A (en) * | 2003-12-26 | 2005-07-14 | Ishikawajima Harima Heavy Ind Co Ltd | Fuel cell power generation facility and method of purging combustible gas in fuel cell power generation facility |
| JP5004156B2 (en) * | 2006-04-19 | 2012-08-22 | 一般財団法人電力中央研究所 | Power generation equipment |
| JP5408420B2 (en) | 2009-07-30 | 2014-02-05 | 日産自動車株式会社 | FUEL CELL SYSTEM AND FUEL CELL TEMPERATURE METHOD USED FOR THE FUEL CELL SYSTEM |
| CN115377454B (en) * | 2022-08-04 | 2025-09-05 | 哈尔滨工业大学重庆研究院 | A catalytic combustion fuel cell cold start system and method based on waste heat recovery |
-
1992
- 1992-04-28 JP JP4109625A patent/JPH0810601B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016094026A1 (en) | 2014-12-09 | 2016-06-16 | Lubrizol Advanced Materials, Inc. | Additive to prevent phase separation of low profile additive in unsaturated thermoset polyester compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05303971A (en) | 1993-11-16 |
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