Determination of gas-liquid mass transfer coefficient for methanol synthesis under supercritical condition

被引：0

作者：

Li, Jinggang ^{[1
]}

Wu, Sicao ^{[1
]}

Liu, Peng ^{[1
]}

Cheng, Zhenmin ^{[1
]}

Zhou, Zhiming ^{[1
]}

Fang, Yunjin ^{[1
]}

机构：

[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology

来源：

Huagong Xuebao/CIESC Journal | 2014年 / 65卷 / 01期

关键词：

Mass transfer; Methanol; Process intensification; Supercritical fluid; Synthesis;

D O I：

10.3969/j.issn.0438-1157.2014.01.011

中图分类号：

学科分类号：

摘要：

Gas-liquid mass transfer coefficient for methanol synthesis was determined in a mechanically agitated slurry reactor with paraffin oil as the inert liquid medium and n-hexane as the supercritical medium. The ratio of gas-liquid mass transfer resistance to reaction resistance increased with increasing of catalyst concentration under the reaction condition of temperature 238°C, syngas pressure 3.7 MPa, and space velocity 2744 h-1. As gas-liquid mass transfer was the control step, gas-liquid mass transfer coefficients were obtained by extrapolation. Catalyst concentration had a much bigger effect on gas-liquid mass transfer of CO than that of CO2. Gas-liquid mass transfer coefficients of CO and CO2 in the liquid-phase reaction were 0.161 s-1 and 0.03 s-1 respectively, while they were 0.199 s-1, 0.042 s-1 under supercritical condition. Supercritical fluid is conductive to gas-liquid mass transfer in the three-phase methanol synthesis process. © All Rights Reserved.

引用

页码：87 / 92

页数：5

共 19 条

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