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Title: CO2 CAPTURE BY ABSORPTION WITH POTASSIUM CARBONATE

The objective of this work is to improve the process for CO{sub 2} capture by alkanolamine absorption/stripping by developing an alternative solvent, aqueous K{sub 2}CO{sub 3} promoted by piperazine. The baseline campaign with 30% MEA has given heat duties from 40 to 70 kcal/gmol CO{sub 2} as predicted by the stripper model. The Flexipak 1Y structured packing gives significantly better performance than IMTP 40 duped packing in the absorber, but in the stripper the performance of the two packings is indistinguishable. The FTIR analyzer measured MEA volatility in the absorber represented by an activity coefficient of 0.7. In the MEA campaign the material balance closed with an average error of 3.5% and the energy balance had an average error of 5.9.
Authors:
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Publication Date:
OSTI Identifier:
842830
DOE Contract Number:
FC26-02NT41440
Resource Type:
Technical Report
Research Org:
University of Texas at Austin
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ABSORPTION; PERFORMANCE; POTASSIUM CARBONATES; CHEMICAL REACTION KINETICS; CARBON DIOXIDE; AIR POLLUTION CONTROL; AMINES