Measurements of the Reaction Kinetics between CO2 with DEA/MDEA/H2O and Solubility and Diffusivity of N2O in TEA/H2O

• Main Authors: Chih-Yuan Lin, 林志遠
• Other Authors: Meng-Hui Li
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/67538222278111202002

碩士 === 中原大學 === 化學工程學系 === 88 === The kinetics of the reaction between CO2 and aqueous solution of blends MDEA(methyldiethanolamine) and DEA(diethanolamine), were investigated at 30, 35 and 40℃ by a wetted wall column, and concentrations from 1.0-1.5 MDEA +0.1-0.DEA kmol·m-3. The thermophysical properties such as density, viscosity, solubility and diffusivity are also measured. Another, we also measured the TEA. Since can''t be measured directly, the solubility and diffusivity in amine aqueous solution they are estimated by N2O analogy. A hybrid model combines the pseudo-first-order model with the zwitterion mechanism are used to correlate the measured kinetics data. The parameters of the hybrid model are determined from the measured kinetic data. The CO2 absorption kinetic data into MDEA/DEA aqueous solutions are found to be well represented by the hybrid model. The measurement of solubility and diffusivity of N2O (DEA/MDEA/H2O and TEA /H2O) is important in designing absorption equipment and exploring the chemical adsorption model. This issue discussess(DEA/MDEA/H2O and TEA /H2O) and estimated by regression model to find a adeguate empirical equation .