过程控制技术在环己酮精制单元的应用  

Application of advanced process control technology in refining unit of cyclohexanone

作　　者：江洋洋 JIANG Yangyang(SINOPEC Nanjing Chemical Industries Co.,Ltd.,Nanjing 210048,Jiangsu,China)

机构地区：[1]中国石化集团南京化学工业有限公司,江苏南京210048

出　　处：《能源化工》2024年第1期72-76,共5页Energy Chemical Industry

摘　　要：环己酮装置中粗醇酮精制单元在生产过程中存在因进料量、进料组分以及管网蒸汽压力波动等问题,而这些问题会影响装置整体运行的平稳性以及最终产品的质量与产量。为解决该问题,根据环己酮装置工艺特点和过程控制需求,在DCS常规控制的基础上,采用APC-Suite先进控制软件系统,结合100 kt/a环己酮装置生产过程,利用多变量模型预测、结合专家智能控制等先进控制技术,实现了粗醇酮精制单元全流程的优化控制。先进控制系统投用后,与常规控制相比,关键工艺参数的标准偏差(波动幅度)大幅降低;操作工操作频次由原来日均155次变为日均10次;装置单位产品蒸汽消耗降低2.4%以上。During the production process of the crude alcohol ketone refining unit in the cyclohexanone unit,there are problems such as fluctuations in the amount of feed,feed components and steam pressure.These problems affect the smoothness of the overall operation of the plant,as well as the quality and yield of the final product.In order to solve these problems,according to the process characteristics and process control requirements of the cyclohexanone plant,the project adopts the APC-Suite advanced control software system on the basis of DCS conventional control,combined with the real-time operation data of 100 kt/a cyclohexanone plant,use multi-variable model prediction,combined with advanced control technologies such as expert intelligent control,the optimal control of the whole process of the crude alcohol and ketone refining unit is realized.After the advanced control system is put into use,compared with conventional control,the standard deviation(fluctuation range)of key process parameters is significantly reduced,the operation frequency of operators change from 155 times per day to 10 times per day,and steam consumption is reduced by more than 2.4%.

关 键 词：环己酮 醇酮精制 模型预测 先进控制技术 优化控制 

分 类 号：TQ234.2[化学工程—有机化工]