摘要
针对原油性质变化对常减压装置操作造成的巨大困难,提出了一种稳定原油性质和引入原油性质参数到软测量和控制模型的先进控制综合解决方案。一方面,对待混炼的多种原油进行调度和掺炼比优化,使实际进入常减压装置进行炼制的调合原油性质相对稳定,装置操作参数变化较小,减少工作点大幅变化过程中所产生的波动。另一方面,针对仍然存在的原油性质小幅度变化,在软测量和预测控制建模中引入反映原油性质的馏程参数,克服原油性质变化所引起的扰动。现场实际装置的应用结果说明了此综合方案的有效性。
Aiming at the great difficulty in crude oil unit （CDU） operation for the diversity of crude oil, an advanced process control comprehensive scheme is presented, which composed of both decreasing the property variety of crude oil feed-in and introducing parameters reflecting property into soft sensor and controller. By scheduling and blending the optimization of multiple crude oils to be refined, the blended crude oil feed-in has relatively steady properties and has small influence on parameters of the unit operation, hence the disturbance from the change in operating point is decreased remarkably. On the other hand, for the remaining small property variety of blended crude oil, the parameters reflecting property are introduced to soft sensor calculation and advanced process controller based on model predictive control to overcome the disturbance of property variety. By scheduling and blending optimization, the parameter varieties of unit operation are small, which makes it possible that the soft sensor and predictive control using linear approximate model have a great performance. Application on a CDU with multiple crude oils shows the validity of the comprehensive scheme.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2009年第10期2522-2528,共7页
CIESC Journal
基金
国家高技术研究发展计划项目(2007AA04Z193)
国家自然科学基金项目(60574072)
国家重点基础研究计划项目(2002CB3122002)~~
关键词
常减压装置
原油混炼优化
软测量
模型预测控制
crude oil unit
blending optimization of crude oil
soft sensor
model predictive control
