CO2 Capture by Absorption With Potassium Carbonate

Rochelle, Gary T. ; Chen, Eric ; Cullinane, J.Tim ; Hilliard, Marcus ; Lu, Jennifer ; Oyenekan, Babatunde ; Dugas, Ross

University of Texas at Austin

关键词: Pilot Plants;    Carbon Dioxide;    Computerized Simulation;    Kinetics;    Absorption;   

DOI  :  10.2172/829575
RP-ID  :  NONE
RP-ID  :  FC26-02NT41440
RP-ID  :  829575

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. CO{sub 2} mass transfer rates are second order in piperazine concentration and increase with ionic strength. Modeling of stripper performance suggests that 5 m K{sup +}/2.5 m PZ will require 25 to 46% less heat than 7 m MEA. The first pilot plant campaign was completed on June 24. The CO{sub 2} penetration through the absorber with 20 feet of Flexipac{trademark} 1Y varied from 0.6 to 16% as the inlet CO{sub 2} varied from 3 to 12% CO{sub 2} and the gas rate varied from 0.5 to 3 kg/m{sup 2}-s.