Correlating Mass Transfer Coefficients of O2 and N2 in Methanol in a Stirred-Tank Reactor,Chemical Engineering & Technology

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Correlating Mass Transfer Coefficients of O2 and N2 in Methanol in a Stirred-Tank Reactor
Chemical Engineering & Technology ( IF 1.8 ) Pub Date : 2022-07-21 , DOI: 10.1002/ceat.202100631
Miao Qi _{1,

2} , Haifeng Dong _{1,

2,

3} , Xianglei Meng _{1,

2,

3} , Guliang Liu _{1,

2,

3} , Yanyan Diao _{1,

2,

3}

Affiliation

In oxidative esterification of methacrolein to methyl methacrylate, mass transfer of O₂ and N₂ in methanol is of vital importance for the determination of reaction kinetics and design of industrial units. The mass transfer coefficients k_L of O₂ and N₂ in methanol were determined by the decreasing-pressure method in a gas-liquid stirred reactor at temperatures ranging from 298.15 to 333.15 K, pressures ranging from 0.5 to 1.2 MPa, and agitation speeds ranging from 100 to 200 rpm. It could be shown that k_L-O₂ and k_L-N₂ increased with increasing temperature and agitation speed, but did not change significantly with partial pressure. On the basis of the experimental results, theoretical and empirical equations were proposed. This work provides an example of a study on the mass transfer of gases in a liquid.

中文翻译：

搅拌釜反应器中甲醇中 O2 和 N2 的相关传质系数

在甲基丙烯醛氧化酯化为甲基丙烯酸甲酯的过程中，O ₂和 N ₂在甲醇中的传质对于确定反应动力学和工业装置的设计至关重要。O ₂和N ₂在甲醇中的传质系数k _L采用减压法在气液搅拌反应器中测定，温度范围为298.15～333.15 K，压力范围为0.5～1.2 MPa，搅拌速度范围为从 100 到 200 转/分。可以证明，k _L -O ₂和k _L -N ₂随温度和搅拌速度的增加而增加，但不随分压显着变化。在实验结果的基础上，提出了理论和经验方程。这项工作提供了一个研究液体中气体传质的例子。

更新日期：2022-07-21

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