Title

Mass Transfer and Reaction Kinetics in the Carbonization of Magnesium Oxide from Light Calcined Magnesia with Mechanical Force Enhancement

Translated Titles

機械力強化作用下輕燒氧化鎂碳化過程的傳質與反應動力學研究

Authors

張煥軍(Huan-Jun Zhang);朱國才(Guo-Cai Zhu)

Key Words

mechanical force ; kinetics ; carbonization ; magnesium oxide ; mass transfer

PublicationName

Chinese Journal of Chemical Engineering

Volume or Term/Year and Month of Publication

12卷2期(2004 / 04 / 01)

Page #

196 - 201

Content Language

英文

English Abstract

The carbonization of magnesium oxide particles by CO2 was investigated using a stirring mill reactor. The effects of the system temperature, stirring rotation speed, influx rate of CO2 and initial diameter of the magnesium oxide particles on the carbonization process were determined. The results show that the system temperature and the stirring rotation speed are the most significant influencing factors on the carbonization rate. The determination of critical decomposition temperature (CDT) gives the maximum carbonization rate with other conditions fixed. A theoretical model involving mass transfer to be 32.8kJ•mol^(-1). The carbonization process is co-controlled by diffusive mass transfer and chemical reaction. The model fits well with the experimental results.

Topic Category 工程學 > 化學工業