應用薄膜分離技術作燃煤發電廠之補碳集水綠色製程設計

2017-08-012024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/662981摘要：近幾十年中，隨著工業發展及不斷增加的人口，衍生出許多重大的全球化議題，包括各種天然資源及能源的緊缺、逐漸匱乏的淡水，以及溫室氣體造成的全球暖化問題等。其中，燃煤電廠在近期內仍將是全球最主要的二氧化碳排放源。為了降低及管理二氧化碳排放量、增加水的回收再利用和尋找新的淡水來源，本三年期計畫擬針對燃煤發電廠中可利用薄膜分離技術達成之相關程序進行深入探討分析，就現有技術進行程序整合後的效益評估，並找出具有最佳能源效率或最經濟可行的操作條件。過程將分為三個研究子題分三年期進行：(1) 薄膜分離作燃煤電廠煙道氣二氧化碳捕獲之製程設計、(2) 薄膜分離作燃煤電廠煙道氣集水回收之分析與設計、及(3) 整合燃煤電廠餘熱作淡化海水程序之製程設計。首先根據薄膜的運行原理和控制方程式建立薄膜分離數學模型，之後考慮不同的設計因素，包含壓力比、膜級切、流動型態、多級薄膜與回流設計，於製程中配置多級薄膜，改變製程中的操縱變因預測設備和操作成本，探討各子題相互整合的可能性與結果，找出最佳製程設計；之後將延伸強化煙道氣之集水回用製程，並利用低溫廢熱供作海水淡化之熱源，提出燃煤發電廠整合補碳集水目標之綠色製程設計。此一計畫預期能協助我國燃煤發電廠降低碳排放、提供更多元化的工業用淡水補充來源。<br> Abstract: In recent decades, with the rapid development of industry and the increase of the population, the world faces a lot of global challenges, such as the shortage of natural resources, lack of fresh water, and global warming caused by greenhouse gases. This project focuses on application of membrane separation technologies in the coal-fired power plants in order to reduce and control the CO2 emission, increase water recycling and reuse, and find new sources of fresh water. This project consists of evaluating the effectiveness of process integration based on existing technologies, and determining the most energy- or cost-effective operating conditions. This project is comprised of three research subjects: (1) optimal process design for CO2 capture from flue gas in the post-combustion coal-fired power plants, (2) feasible and optimal process design for gathering of water vapor from the flue gas, and (3) use of waste heat from the coal-fired power plants for sea water desalination. It is expected to propose a membrane-integrated process that is optimized for carbon capture and water recovery/generation on a coal-fired power plant.薄膜薄膜分&#63978程序燃煤發電廠二氧化碳捕捉煙道氣脫水脫鹽MembraneMembrane separation processCoal-fired power plantCO2 captureFlue gas dehydrationDesalination應用薄膜分離技術作燃煤發電廠之補碳集水綠色製程設計