LI Xiaofei, WANG Shujuan, CHEN Changhe. Modification of process and optimization for CO2 capture systems using amine solution[J]. CIESC Journal, 2013, (10): 3750-3759. DOI: 10.3969/j.issn.0438-1157.2013.10.036.
LI Xiaofei, WANG Shujuan, CHEN Changhe. Modification of process and optimization for CO2 capture systems using amine solution[J]. CIESC Journal, 2013, (10): 3750-3759. DOI: 10.3969/j.issn.0438-1157.2013.10.036.DOI:
Capturing CO2 from coal-fired power plants using monoethanolamine(MEA)solution is a relatively mature and feasible technology at present.However
high energy requirement is its main drawback.The energy requirement can be reduced by modification of process and optimization.A rate-based model in Aspen Plus simulator is used to simulate the conventional flow path and its modification.The process modifications include absorber intercooling
rich split
lean vapor compression
split flow and the combination of rich split and lean vapor compression.The results show that combination of rich split and lean vapor compression as well as the rich split are the first and the second best process improvement
save of regeneration energy and decrease of equivalent work are 28.2% and 19.3% as well as 11.9% and 11.8%
respectively.For lean vapor compression
save of regeneration energy can be up to 14.1%
while the decrease of equivalent work is only 4.1%.The absorber intercooling and split flow is relatively limited for energy saving.