Experimental study on CO2 absorption and regeneration of aqueous sodium glycinate solutions

Wei Zhao, Yao Shi, Jian Wen Wei, Qing Ye

科研成果: 期刊稿件文章同行评审

19 引用 (Scopus)

摘要

Absorption of CO2 with amines has been extensively studied in recent years because of environmental concern of greenhouse effect. The investigation of CO2 absorption by aqueous sodium glycinate (SG) solution with different concentrations (1.0-4.0 mole SG·L-1) was conducted in a double stirred-cell absorber, and the regeneration performance of SG aqueous solution after CO2 absorption by means of heating was studied. The relationships between the absorption rate, absorption capacity, absorption load and absorption time, the influence of absorption temperature on absorption rate, and the absorption performance difference between SG aqueous solution and several other commonly used aqueous alkanolamine solutions were discussed. The results indicate that the CO2 absorption rate of SG aqueous solution is higher than that of the other commonly used aqueous alkanolamine solutions, and that the influence of absorption temperature on the absorption rate of SG aqueous solution is significant. The SG aqueous solution with higher concentration has higher absorption capacity, whereas lower absorption load. The regeneration efficiency of the used SG aqueous solution increases from 80.0% to 92.6% with the increase of regeneration temperature from 363 K to 403 K; and the most suitable regeneration temperature and time were found as 383-388 K and 76-82 min respectively.

源语言英语
页(从-至)690-696
页数7
期刊Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities
22
4
出版状态已出版 - 8月 2008
已对外发布

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