Continuous experiment and simulation of p-xylene oxidation promoted by CO<sub>2</sub>

SHANG Jianping; WU Chengyang; ZHAO Ling; SUN Weizhen; YUAN Weikang

doi:10.11949/j.issn.0438-1157.20150655

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Continuous experiment and simulation of p-xylene oxidation promoted by CO₂

更新时间：2025-12-10

- Continuous experiment and simulation of p-xylene oxidation promoted by CO₂
- CIESC Journal Issue 8, Pages: 2968-2975(2015)
- 作者机构：
  
  华东理工大学化学工程联合国家重点实验室,上海,200237
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150655
  CLC： Q031.7
- Online First：05 August 2015，
  
  Published：05 August 2015
- 稿件说明：
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SHANG Jianping, WU Chengyang, ZHAO Ling, et al. Continuous experiment and simulation of p-xylene oxidation promoted by CO₂[J]. CIESC Journal, 2015, (8): 2968-2975. DOI: 10.11949/j.issn.0438-1157.20150655.
DOI：

SHANG Jianping, WU Chengyang, ZHAO Ling, et al. Continuous experiment and simulation of p-xylene oxidation promoted by CO₂[J]. CIESC Journal, 2015, (8): 2968-2975. DOI: 10.11949/j.issn.0438-1157.20150655. DOI：

摘要

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。

Abstract

This article focuses on the study of the promoting influence of CO2 on the liquid phase oxidation of p-xylene (PX) under industrial reaction conditions. Using a continuous experimental setup

the influences of gas-phase CO2 content and temperature on PX oxidation were investigated

and the processes were simulated by means of reactor modeling. It was found that CO2 could significantly increase the PX conversion and the yield of the primary product in the reactor outlet and reduce the content of the main impurities in liquid phase

when the CO2 concentration is between 40%—60%. When temperatures are higher than 192℃

the effect of temperature on the reactor outlet index is noticeably higher than that at lower temperatures. The mixed-flow reactor model successfully predicted the main index changes of reactor outlet with the residence time at different CO2 contents and temperatures

such as the PX conversion

yield of the primary product

and the contents of major impurities in the liquid phase. Hopefully

the results of this work could provide new ideas for enhancing efficiency and energy saving of current industrial PX oxidation processes.

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Continuous experiment and simulation of p-xylene oxidation promoted by CO2

DOI：10.11949/j.issn.0438-1157.20150655

摘要

Abstract

关键词

Keywords

references

Continuous experiment and simulation of p-xylene oxidation promoted by CO₂