化工学报Issue(8)：2968-2975,8.DOI:10.11949/j.issn.0438-1157.20150655
二氧化碳协助强化对二甲苯氧化的连续过程实验与模拟
Continuous experiment and simulation ofp-xylene oxidation promoted by CO2
摘要
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.关键词
连续实验/模拟计算/二氧化碳/对二甲苯Key words
carbon dioxide promoting oxidation/p-xylene/continuous experiment/simulation分类
化学化工引用本文复制引用
尚建平,吴承洋,赵玲,孙伟振,袁渭康..二氧化碳协助强化对二甲苯氧化的连续过程实验与模拟[J].化工学报,2015,(8):2968-2975,8.基金项目
教育部留学回国人员科研启动基金资助项目；国家自然科学基金联合基金项目（U1162202）；高等学校学科创新引智计划项目（B08021）。 （）
