Open AccessFeasibility study of CO2 capture by anti-sublimation
Author(s) -
MarcOliver Schach,
Bernardo Oyarzún,
Henning Schramm,
R. Schneider,
JensUwe Repke
Publication year - 2011
Publication title -
energy procedia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.474
H-Index - 81
ISSN - 1876-6102
DOI - 10.1016/j.egypro.2011.02.005
Subject(s) - sublimation (psychology) , process engineering , energy demand , vapor compression refrigeration , work in process , materials science , environmental science , waste management , computer science , engineering , mechanical engineering , operations management , environmental economics , refrigerant , psychology , psychotherapist , gas compressor , economics
Processes for carbon capture and storage have the drawback of high energy demand. In this work the application of CO2 capture by anti-sublimation is analyzed. The process was simulated using Aspen Plus. Process description is accomplished by phase equilibria models which are able to reproduce the vapor-liquid and vapor-solid equilibria. Different process configurations are proposed. Total electric energy demand was defined as the evaluation criteria and the most suitable configuration was selected within technical limits. Further performance enhancement was achieved by improving the compression cooling cycles. An economic evaluation was performed for the low temperature process and the results were compared to a chemical absorption process with monoethanolamine. CO2 capture by anti-sublimation showed a better performance concerning the energy demand but with a reduced economic benefit due to higher equipment cost
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