TY - JOUR
ID - 115401
TI - Mass Transfer Modeling of CO2 Absorption into Blended Aqueous MDEA–PZ Solution
JO - Iranian Journal of Oil and Gas Science and Technology
JA - IJOGST
LA - en
SN - 2345-2412
AU - Mirzaei, Fahimeh
AU - Ghaemi, Ahad
AD - M.S. Student, School of Chemical, Petroleum, and Gas Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
AD - Associate Professor, School of Chemical, Petroleum, and Gas Engineering, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
Y1 - 2020
PY - 2020
VL - 9
IS - 3
SP - 77
EP - 101
KW - CO2
KW - MDEA–PZ Solution
KW - Buckingham Pi Theorem
KW - Mass Transfer Flux
KW - loading
DO - 10.22050/ijogst.2020.222615.1540
N2 - In this research, the rate of CO2 absorption into methyl diethanolamine–piperazine (MDEA–PZ) solution was investigated. To model the mass transfer flux in the reactive absorption processes, the dimensionless parameters of the process were obtained using the Buckingham Pi theorem and considering the effective parameters in mass transfer. The CO2 mass transfer flux in the reactive absorption process depends on the mass transfer parameters of both the liquid and gas phases. Based on the dimensionless parameters obtained, a correlation is proposed to calculate the mass transfer flux of acidic gases in MDEA–PZ solutions. The mass transfer flux in the reactive absorption process is modeled based on the four laws of chemical equilibrium, phase equilibrium, mass balance, and charge balance. Experimental data from the literature were used to determine the constants of the derived correlation as a function of dimensionless parameters. In the provided correlation, the effects of dimensionless parameters including film parameter, CO2 loading, ratio of diffusion coefficients in the gas–liquid phase, CO2 partial to total pressure, and film thickness ratio as well as factors such as temperature, the number of free amines in the solution, the partial pressure of CO2, on the CO2 mass transfer flux were investigated. According to the results, the absorption rate decreases with increasing CO2 loading and film parameter, and the mean absolute deviation is about 3.6%, which indicates the high accuracy of the correlation.
UR - http://ijogst.put.ac.ir/article_115401.html
L1 - http://ijogst.put.ac.ir/article_115401_c7385fccf8880567359ff53235b62fff.pdf
ER -