化工学报2016，Vol.67Issue(8)：3491-3498,8.DOI:10.11949/j.issn.0438-1157.20160414
基于多目标优化的两段提升管重油催化裂解自优化控制
Self-optimizing control based on multi-objective optimization for heavy oil catalytic pyrolysis in two-stage riser
摘要
Abstract
Considered economic requirement for maximizing propylene yield of fluidized catalytic pyrolysis process in two-stage riser, as well as complex characteristics of the FCC process such as strong nonlinearity, coupling multivariable and unavailability in online measurement of product yields, a self-optimizing control strategy on a basis of multi-objective optimization was proposed. First, a multi-objective optimization framework for maximizing propylene yield while minimizing dry gas output was created from steady state model and operational constraints of the process, and solved for optimal operation condition with a complete and uniform Pareto distribution by standardized normal constraint method. Secondly, a self-optimizing scheme of cascade controls was generated from relationships between the optimal operation condition and the active constraints. Product yield that could not be measured online were estimated by an unscented Kalman filter transformation. Compared to the tracking control on temperature setpoints at the riser outlet, the self-optimizing control method could spontaneously adjust operating condition under circumstances of interference and reduce the disadvantageous impact of noise factors to optimizing process operation.关键词
优化/过程控制/数值模拟/催化裂解/两段提升管Key words
optimization/process control/numerical simulation/catalytic pyrolysis/two-stage riser分类
能源科技引用本文复制引用
王平,赵辉,杨朝合..基于多目标优化的两段提升管重油催化裂解自优化控制[J].化工学报,2016,67(8):3491-3498,8.基金项目
国家重点基础研究发展计划项目（2012CB215006）；中央高校基本科研业务费专项资金项目（2015010109）。@@@@supported by the National Basic Research Program of China (2012CB215006) and the Fundamental Research Funds for the Central Universities (2015010109) （2012CB215006）
