Development of MEA-based CO2 phase change absorbent

Weidong Zhang, Xianhang Jin, Weiwei Tu, Qian Ma, Menglin Mao and Chunhua Cui

Applied Energy, 2017, vol. 195, issue C, 316-323

Abstract: By using the salting-out phenomenon to induce phase separation, the novel CO2 phase change absorbents (CPCAs) composed of MEA/water-miscible alcohol/H2O were developed. The absorbents using 1-propanol, 2-propanol and tertiary butanol as the diluent were selected as CPCAs. The CPCAs composed of MEA/1-propanol/H2O were further examined include the species distributions in the two phases, physical properties, cyclic capacity and absorbent regenerability. In comparison to 30wt% MEA/H2O, the optimal CO2 cycle capacity of CPCA is 2.59mol CO2/kg which increase 62% and the volume of CPCA sent to the stripper decreased over 67%. The developed CPCAs would benefit to reduce energy consumption of CO2 capture.

Keywords: CO2 capture; CO2 phase change absorbent (CPCA); MEA; Cycle capacity (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (25)

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DOI: 10.1016/j.apenergy.2017.03.050

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