CO(sup 2) Capture by Absorption with Potassium Carbonate. Quarterly Progress Report. Reporting Period State Date: April 1, 2004. Reporting Period End Date: June 20, 2004.

Technical Information Center Oak Ridge Tennessee

关键词: Carbon dioxide;    Absorption;    Potassium carbonate;    Aqueous solutions;    Piperazines;   

RP-ID  :  DE2004829575

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports 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.