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化工学报  2015 

二氧化碳协助强化对二甲苯氧化的连续过程实验与模拟

DOI: 10.11949/j.issn.0438-1157.20150655, PP. 2968-2975

Keywords: 连续实验,模拟计算,二氧化碳,对二甲苯

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Abstract:

利用连续实验装置考察了气相CO2浓度和反应温度对PX氧化反应的影响,并通过反应器建模对连续实验过程进行了模拟计算。研究结果表明,当气相CO2浓度介于40%~60%时,CO2能显著提高反应器出口PX转化率以及主产物收率,并且可以降低液相中主要杂质的含量;温度高于192℃后对反应器出口指标的影响比低温时明显。本文建立的全混流反应器模型能够预测气相CO2含量以及温度等不同反应条件下氧化反应器出口的PX转化率、主产物收率以及液相主要杂质随停留时间的变化。相关研究结果可为当前工业PX氧化过程效率提高以及节能降耗提供新的思路。

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