A study on equilibrium solubility for carbon dioxide in methyldiethanolamine-piperazine-water solution
Activated methyldiethanolamine (MDEA) technology has been frequently applied for the removal of acidic gases such as CO{sub 2} and H{sub 2}S from gas streams. Solubilities of CO{sub 2} in aqueous mixtures of methyldiethanolamine (MDEA) and piperazine (PZ) have been measured for temperatures and CO{sub 2} partial pressures ranging from 30 to 90 C and 13.16 to 935.3 kPa, respectively. A modified Deshmukh-Mather thermodynamic model is used to correlate the experimental data with the average deviation of 9.8%, in which the effect of salts on Henry's constant is taken into consideration. The results also indicate that the second-order dissociation reaction for piperazine can be neglected. A simple model is also given with the average deviation of 11.6%.
- Research Organization:
- East China Univ. of Science and Technology, Shanghai (CN)
- OSTI ID:
- 20001006
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 38, Issue 10; Other Information: PBD: Oct 1999; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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