SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (2): 241-246.

• • 上一篇    下一篇

A Hybrid Programming Model for Optimal Production Planning under Demand Uncertainty in Refinery

李初福1, 何小荣1, 陈丙珍1, 徐强2, 刘朝玮2   

  1. 1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    2. Department of Chemical Engineering, Lamar University, Beaumont 77710, USA
  • 收稿日期:2007-05-08 修回日期:2007-09-20 出版日期:2008-04-28 发布日期:2008-04-28
  • 通讯作者: HE Xiaorong,E-mail:hexr@tsinghua.edu.cn
  • 基金资助:
    the Specialized Research Fund for Doctoral Program of Higher Education of China(20060003087)

A Hybrid Programming Model for Optimal Production Planning under Demand Uncertainty in Refinery

LI Chufu1, HE Xiaorong1, CHEN Bingzhen1, XU Qiang2, LIU Chaowei2   

  1. 1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    2. Department of Chemical Engineering, Lamar University, Beaumont 77710, USA
  • Received:2007-05-08 Revised:2007-09-20 Online:2008-04-28 Published:2008-04-28
  • Supported by:
    the Specialized Research Fund for Doctoral Program of Higher Education of China(20060003087)

摘要: Production planning under uncertainty is considered as one of the most important problems in plant-wide optimization.In this article,first,a stochastic programming model with uniform distribution assumption is developed for refinery production planning under demand uncertainty,and then a hybrid programming model incorporating the linear programming model with the stochastic programming one by a weight factor is proposed. Subsequently,piecewise linear approximation functions are derived and applied to solve the hybrid programming model under uniform distribution assumption.Case studies show that the linear approximation algorithm is effective to solve the hybrid programming model,along with an error≤0.5% when the deviation/mean≤20%.The simulation results indicate that the hybrid programming model with an appropriate weight factor(0.1-0.2)can effectively improve the optimal operational strategies under demand uncertainty,achieving higher profit than the lin-ear programming model and the stochastic programming one with about 1.5% and 0.4% enhancement,respectively.

关键词: production planning, demand uncertainty, stochastic programming, linear programming, hybrid pro-gramming

Abstract: Production planning under uncertainty is considered as one of the most important problems in plant-wide optimization.In this article,first,a stochastic programming model with uniform distribution assumption is developed for refinery production planning under demand uncertainty,and then a hybrid programming model incorporating the linear programming model with the stochastic programming one by a weight factor is proposed. Subsequently,piecewise linear approximation functions are derived and applied to solve the hybrid programming model under uniform distribution assumption.Case studies show that the linear approximation algorithm is effective to solve the hybrid programming model,along with an error≤0.5% when the deviation/mean≤20%.The simulation results indicate that the hybrid programming model with an appropriate weight factor(0.1-0.2)can effectively improve the optimal operational strategies under demand uncertainty,achieving higher profit than the lin-ear programming model and the stochastic programming one with about 1.5% and 0.4% enhancement,respectively.

Key words: production planning, demand uncertainty, stochastic programming, linear programming, hybrid pro-gramming