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CO{sub 2} CAPTURE BY ABSORPTION WITH POTASSIUM CARBONATE.

Gary T. RochelleJ.Tim CullinaneEric ChenMarcus HilliardBabatunde OyenekanRoss Dugas

出版	National Energy Technology Laboratory (U.S.), 2005
URL	http://books.google.com.hk/books?id=xMTljwEACAAJ&hl=&source=gbs_api

註釋

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. Thermodynamic modeling predicts that the heat of desorption of CO{sub 2} from 5m K+/2.5 PZ from 85 kJ/mole at 40 C to 30 kJ/mole at 120 C. Mass transfer modeling of this solvent suggests that carbonate and general salt concentration play a major role in catalyzing the rate of reaction of CO{sub 2} with piperazine. Stripper modeling suggests that with the multipressure stripper, the energy consumption with a generic solvent decreases by 15% as the heat of desorption is decreased from 23.8 to 18.5 kcal/gmol. A second pilot plant campaign with 5m K+/2.5 PZ was successfully completed.