- 學位論文
高溫混元型燃料電池汽電共生系統CO2捕集/分離技術研究
Performance Analysis of High Temperature Hybrid Fuel Cell Combined with Cogeneration System and CO2 Capture/Separation Technology
摘要
傳統發電過程中所產生的CO2，已對我們的生活環境造成不良影響，其暖化與海平面上升等現象日漸嚴重，為防止此現象繼續惡化，溫室氣體的排量放必須逐年降低，因此，世界各國不斷發展高效率潔淨發電技術，以符合”京都議定書”所提出的溫室氣體排放減量計畫。 其中，高溫型燃料電池(SOFC、MCFC)為潔淨能源發電技術中的重點開發對象，具有高輸出、高效率等特點，若能與氣渦輪機等設備做連結，則共生系統效率遠勝於傳統熱電廠，因此，可將其與前燃燒、後燃燒與氧燃燒過程做整合，不但具有CO2捕集/分離的效果，亦能同時保有高效率。 故本文係針對高溫型燃料電池為研究主題，透過電池特性分析、汽電共生系統設計、高溫薄膜與CO2捕集/分離技術，將其設計成具有CO2捕集/分離之高效率汽電共生系統，並探討不同CO2捕集/分離技術對系統效率的影響，以期進一步發展出能有效將低CO2排放之最佳燃料電池汽電共生系統。
並列摘要
The CO2 produced by traditional power plant generating process has already caused the harmful effects of our living environment，some problems such as iceberg melting and sea level rising，etc. are getting more and more critical。In order to prevent this phenomenon from continuing worsening，the emission of greenhouse gas must be reduced year by year，therefore，countries all over the world ceaselessly develop the high-efficiency and clean power generation technology to accord with the ”Kyoto Protocol” proposed greenhouse gas decreased emission plan。 Among this，the high-temperature fuel cell(SOFC、MCFC) is the main target of the clean energy power generation technology，it has high power output and high efficiency characteristics，etc.，if could be combined with the gas turbine equipment，the efficiency of cogeneration could be much better than traditional power plant，therefore，to be integrated with pre-combustion process、post-combustion process、oxygen-fuel-combustion process，which not only have CO2 capture/separation purpose but also maintaining high-efficiency of power generation。 Hence the thesis aim at the high-temperature fuel cell as a research topic，through analysis of the cell characteristic，cogeneration system design，high temperature membrane and CO2 capture/separation technology，then use above items to design high-efficiency cogeneration system with CO2 capture/separation，to discuss different CO2 capture/separation for the effect of system efficiency，to look forward to developing the most optimal fuel cell cogeneration system which can efficiently decrease CO2 emission further。