Solubility measures of the mixtures of carbon dioxide and hydrogen sulfide in aqueous MEA+AMP solution

• Main Authors: Chang,Bei Chia, 張倍嘉
• Other Authors: Li,Meng Hui
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/55280387276581105190

碩士 === 中原大學 === 化學工程研究所 === 82 === The solubilities of the mixtures of CO2 and H2S in aqueous MEA (monoethanolamine) / AMP (2-amino-2-methyl-1-propanol) solutions have been measured. The systems studied are CO2/MEA/ AMP/H2O,H2S/MEA/AMP/H2O,and CO2/H2S/MEA/AMP/H2O. For CO2/MEA/ AMP/H2O and H2S/MEA/AMP/H2O solutions,six blended amines solut ions(a total of 30 wt%) were selected for measurements for tem peratures 40 to 100 C. For CO2/H2S/MEA/AMP/H2O systems, the va por-liquid equilibrium studied are 3M MEA + 2M AMP and 2M MEA +3 M AMP at temperatures 40 and 80 C and for the partial press ures of the acid gases (CO2 or H2S) ranging from 1.0 to 160 kP a. THe obtained vapor-liquid equilibrium data have been correl ated based on the method of Kent and Eisenberg. The binary par ameters in the model were determined by fitting to the equilib rium solubility data.Satisfactory results were obtainded for calculation of the solubility of CO2 and H2S in MEA + AMP aque ous solutions for the systems tested. The use of blended amine s in gas-treating process has been shown to be attractive and with great potenial.The results of this study can be used as an important vapor-liquid equilibrium data base for design of the gas treating process units using MEA / AMP as absorption fluids. Also,the data can also be used to develop thermodynami ces model involving the solubilities of CO2 and H2S in MEA + AMP +water systems.