CO2 Capture by Absorption With Potassium Carbonate

Rochelle, Gary T. ; Chen, Eric ; Lu, Jennifer ; Oyenekan, Babatunde ; Dugas, Ross

University of Texas at Austin

关键词: Desorption;    Acid Neutralizing Capacity;    Carbon Dioxide;    Absorption;    Air Pollution Control;   

DOI  :  10.2172/840473
RP-ID  :  NONE
RP-ID  :  FC26-02NT41440
RP-ID  :  840473

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. Stripper modeling suggests the energy requirement with a simple stripper will be about the same for 5 m K{sup +}/2.5 m PZ and 7 m MEA. Modeling with a generic solvent shows that the optimum heat of CO{sub 2} desorption to minimize heat duty lies between 15 and 25 kcal/gmol. On-line pH and density measurements are effective indicators of loading and total alkalinity for the K+/PZ solvent. The baseline pilot plant campaign with 30% MEA has been started.