利用變壓吸附程序在中高溫下濃縮含有水汽之氣化合成氣中氫氣及捕獲二氧化碳;Hydrogen Concentration and Carbon Dioxide Capture from Gasification Syngas with Moisture by Pressure Swing Adsorption Process at Mid-High Temperature

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题名:	利用變壓吸附程序在中高溫下濃縮含有水汽之氣化合成氣中氫氣及捕獲二氧化碳;Hydrogen Concentration and Carbon Dioxide Capture from Gasification Syngas with Moisture by Pressure Swing Adsorption Process at Mid-High Temperature
作者:	周正堂
贡献者:	國立中央大學化學工程與材料工程學系
关键词:	化學工程;環境科學
日期:	2012-12-01
上传时间:	2014-03-17 11:29:54 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	研究期間：10108~10207;Because global warming has become more and more serious, which are caused by greenhouse gases, cutting down the emission of CO2 has already become one of the major research topics in the world. Several ways including physical, chemical and biological methods are studied to capture CO2 before it emits to atmosphere, such as chemical absorption, pressure swing adsorption (PSA), membrane separation, refrigeration/cryogenic etc. PSA performs better in saving energy and wouldn’t cause the second pollution problem, so it has been used widely in gas separation. The main sources of CO2 include the processes of generating electric power and producing hydrogen from natural gas and hydrocarbon. The CO2 which comes from coal is generated by gasifier and the water-gas-shift-reaction step of the process. The syngas after gasifier and water-gas-shift-reaction is cooled downed to remove water and to capture CO2 first in current technology, before the rest gas is heated again for power generation. However, the steps of cooling and heating cause the waste of energy. Besides, separating CO2 and H2 from syngas with moisture is difficult to achieve at the same time due to the strong adsorption of water. This study plans to use PSA process to directly separate high purity hydrogen and to capture CO2 from syngas at mid-high temperature under the condition of containing moisture, which contains water vapor, CO, CO2 and H2. By PSA process, the goal of energy generation and environmental protection could be achieved at the same time.
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
显示于类别:	[化學工程與材料工程學系 ] 研究計畫

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