| PX氧化反应过程4CBA浓度的实时优化 |
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| 引用本文： | 邢建良,蒋鹏飞,钟伟民,赵均,邵之江,钱锋.PX氧化反应过程4CBA浓度的实时优化[J].清华大学学报(自然科学版),2012(3):320-324. |
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| 作者姓名： | 邢建良 蒋鹏飞 钟伟民 赵均 邵之江 钱锋 |
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| 作者单位： | 华东理工大学化工学院化学工程联合国家重点实验室;浙江大学控制科学与工程学系;华东理工大学化工过程先进控制与优化技术教育部重点实验室 |
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| 基金项目： | 国家“九七三”重点基础研究发展计划(2012CB720500);国家自然科学基金项目(61174118);上海市重点学科建设项目(B504) |
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| 摘 要： | 精对苯二甲酸(purified terephthalic acid,PTA)是重要的化工原料,对二甲苯(p-xylene,PX)氧化反应是PTA装置的核心单元,是高温高压下固液相催化氧化反应。PX氧化反应在生成粗对苯二甲酸的同时,会生成一种副产物对羧基苯甲醛(4-carboxybenzaldehyde,4CBA),4CBA会显著影响最终PTA产品的质量。实际工业运行中,对4CBA浓度的定期人工分析已不能满足装置的优化运行。该文以某大型PTA装置的PX氧化反应过程为对象,在工艺机理模型的基础上,综合应用COM(component object model)接口、数据可视化、Aspen Plus模拟优化、Honeywell PHD(process history database)等技术,实现了PX氧化反应过程4CBA浓度的实时预测与优化。工业装置应用后,PX氧化反应过程4CBA浓度实时预报精度良好,有效地监控了装置运行情况,并优化了PX氧化反应过程的运行。
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| 关 键 词： | 精对苯二甲酸 对二甲苯 氧化反应 对羧基苯甲醛 实时优化 |
Real-time optimization of the 4CBA content in a p-xylene oxidation process |
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| XING Jianliang,JIANG Pengfei,ZHONG Weimin,ZHAO Jun,SHAO Zhijiang,QIAN Feng.Real-time optimization of the 4CBA content in a p-xylene oxidation process[J].Journal of Tsinghua University(Science and Technology),2012(3):320-324. |
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| Authors: | XING Jianliang JIANG Pengfei ZHONG Weimin ZHAO Jun SHAO Zhijiang QIAN Feng |
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| Institution: | 1.State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China;2.Department of Control Science and Engineering,Zhejiang University,Hangzhou 310027,China;3.Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education,East China University of Science and Technology,Shanghai 200237,China) |
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| Abstract: | Purified terephthalic acid is an important chemical raw material.p-xylene oxidation,which is a solid-liquid catalytic reaction process requiring high temperatures and pressures,is a core part of purified terephthalic acid plants.p-Xylene can be turned into crude purified terephthalic acid by oxidation,but the byproduct 4-carboxybenzaldehyde is also generated.4-Carboxybenzaldehyde significantly affects the final product quality.In actual industrial operations,regular manual analyses of the 4-carboxybenzaldehyde cannot provide optimal process control.A mechanism model of a large p-xylene oxidation reaction process was used to develop a real-time optimization and control system for 4-carboxybenzaldehyde using a COM(component object model) interface,data visualization,Aspen Plus modeling and optimization,and a Honeywell PHD(process history database).This optimization and control system accurately predicts the 4-carboxybenzaldehyde content,which enhances the operating performance of the p-xylene oxidation reaction process. |
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| Keywords: | purified terephthalic acid p-xylene oxidation reaction 4-carboxybenzaldehyde real-time optimization |
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