Concentration and Recovery of Carbon Dioxide from Flue Gas by Vacuum Swing Adsorption

利用真空變壓吸附法濃縮與回收煙道氣之二氧化碳

陳朝鈺(Chao-Yuh Chen) ； 李光振(Koung-Chung Lee) ； 周正堂(Cheng-Tung Chou)

《Journal of the Chinese Institute of Chemical Engineers》 34卷1期 (2003/01) Pp. 135-142

https://doi.org/10.6967/JCICE.200301.0135

摘要

二氧化碳的排放最主要來自於化石燃料的燃燒。由於世界性公約的限定，未來二氧化碳的排放量勢必得降低，如何濃縮及回收煙道氣中的二氧化碳便成為解決此問題的首要之務。本研究藉由實驗探討兩種不同的雙塔式真空變壓吸附程序自煙道氣移除二氧化碳，並由脫附步驟得到濃縮的二氧化碳氣體。就脫附步驟中的二氧化碳產物濃度而言，六步驟程序可得到較四步驟程序為高的二氧化碳產物濃度，在脫附步驟中的二氧化碳產物濃度會隨檢測時間的增加而上升，二氧化碳濃度最高可達將近90%，二氧化碳的回收率則介於90%到95%之間。

並列摘要

CO2 released into the atmosphere are mainly attributed to fossil fuel combustion. The amount of CO2 emission has to be cut down in the future due to global treaty. The concentration and recovery of CO2 from flue gas is the first important step in solving CO2 problem. This experimental study employs dual-bed vacuum swing adsorption (VSA), which does not generate another pollution problem, for CO2 removal from flue gas and concentrates CO2 in desorption stream. The comparison of two kinds of processes, four-step process and six-step process is explored. The CO2 product concentration in desorption step in the six-step process is higher than in the four-step process. The outlet CO2 concentration in desorption step increases with detection time. The highest CO2 concentration can be near 90%. The recovery of CO2 is between 90% and 95%.

並列關鍵字

Carbon dioxide ； Vacuum swing adsorption ； Zeolite 13X