Modeling of a Packed Bubble Column for Methyl Nitrite Regeneration Based on Reaction Kinetics and Mass Transfer
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- 作者：Zhenhua Li ; Weihan Wang ; Jing Lv ; Xinbin Ma
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2013
- 出版时间：February 27, 2013
- 年：2013
- 卷：52
- 期：8
- 页码：2814-2823
- 全文大小：482K
- 年卷期：v.52,no.8(February 27, 2013)
- ISSN：1520-5045
文摘
The process of dimethyl oxalate synthesis via CO gaseous phase coupling reaction involves two reactions: CO coupling reaction to produce dimethyl oxalate and the regeneration of methyl nitrite. These two reactions are mutually cycled, and matching reaction rates of both reactions are required. For this purpose, both reactions need to be simulated to provide guidance for scaling up the process. In this paper, the kinetics of methyl nitrite synthesis from NO, NO2, and methanol at atmospheric pressure was obtained by using a stirred reactor. Based on this kinetics equation and mass transfer, a mathematical model for methyl nitrite regeneration reaction from O2, NO, and methanol in a packed bubble column reactor was proposed. Using this model, the effects of reaction temperature, N2 volume fraction, NO/O2 molar ratio, and superficial gas velocity on the methyl nitrite yield were predicted and compared with experimental results. It was found that the model predictions agreed well with experimental data.