CO2 Capture by Absorption with Potassium Carbonate: Third Quarterly Report 2005

Rochelle, Gary T. ; Hilliard, Marcus ; Chen, Eric ; Oyenekan, Babatunde ; Dugas, Ross ; McLees, John ; Sexton, Andrew ; Ellenberger, Daniel

University of Texas at Austin

关键词: Amines;    Absorption;    Mathematical Models;    Solubility;    Materials Testing;   

DOI  :  10.2172/859276
RP-ID  :  none
RP-ID  :  FC26-02NT41440
RP-ID  :  859276

美国|英语

来源: UNT Digital Library

【 摘 要 】

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. Modeling of stripper performance suggests that vacuum stripping may be an attractive configuration for all solvents. Flexipac 1Y structured packing performs in the absorber as expected. It provides twice as much mass transfer area as IMTP No.40 dumped packing. Independent measurements of CO{sub 2} solubility give a CO{sub 2} loading that is 20% lower than that Cullinane's values with 3.6 m PZ at 100-120 C. The effective mass transfer coefficient (K{sub G}) in the absorber with 5 m K/2.5 m PZ appears to be 0 to 30% greater than that of 30 wt% MEA.