SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 34 ›› Issue (6): 106-115.DOI: 10.1016/j.cjche.2020.09.040

• Process Systems Engineering and Process Safety • 上一篇    下一篇

Data-driven optimal operation of the industrial methanol to olefin process based on relevance vector machine

Zhiquan Wang1, Liang Wang1, Zhihong Yuan2, Bingzhen Chen1   

  1. 1 Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    2 State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2020-06-22 修回日期:2020-09-03 出版日期:2021-06-28 发布日期:2021-08-30
  • 通讯作者: Zhihong Yuan, Bingzhen Chen
  • 基金资助:
    The authors gratefully acknowledge the financial support for this work from National Natural Science Foundation of China (21978150, 21706143).

Data-driven optimal operation of the industrial methanol to olefin process based on relevance vector machine

Zhiquan Wang1, Liang Wang1, Zhihong Yuan2, Bingzhen Chen1   

  1. 1 Department of Chemical Engineering, Tsinghua University, Beijing 100084, China;
    2 State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Received:2020-06-22 Revised:2020-09-03 Online:2021-06-28 Published:2021-08-30
  • Contact: Zhihong Yuan, Bingzhen Chen
  • Supported by:
    The authors gratefully acknowledge the financial support for this work from National Natural Science Foundation of China (21978150, 21706143).

摘要: Methanol to olefin (MTO) technology provides the opportunity to produce olefins from nonpetroleum sources such as coal, biomass and natural gas. More than 20 commercial MTO plants have been put into operation. Till now, contributions on optimal operation of industrial MTO plants from a process systems engineering perspective are rare. Based on relevance vector machine (RVM), a data-driven framework for optimal operation of the industrial MTO process is established to fully utilize the plentiful industrial data sets. RVM correlates the yield distribution prediction of main products and the operation conditions. These correlations then serve as the constraints for the multi-objective optimization model to pursue the optimal operation of the plant. Nondominated sorting genetic algorithm II is used to solve the optimization problem. Comprehensive tests demonstrate that the ethylene yield is effectively improved based on the proposed framework. Since RVM does provide the distribution prediction instead of point estimation, the established model is expected to provide guidance for actual production operations under uncertainty.

关键词: Methanol to olefins, Relevance vector machine, Genetic algorithm, Operation optimization, Systems engineering, Process systems

Abstract: Methanol to olefin (MTO) technology provides the opportunity to produce olefins from nonpetroleum sources such as coal, biomass and natural gas. More than 20 commercial MTO plants have been put into operation. Till now, contributions on optimal operation of industrial MTO plants from a process systems engineering perspective are rare. Based on relevance vector machine (RVM), a data-driven framework for optimal operation of the industrial MTO process is established to fully utilize the plentiful industrial data sets. RVM correlates the yield distribution prediction of main products and the operation conditions. These correlations then serve as the constraints for the multi-objective optimization model to pursue the optimal operation of the plant. Nondominated sorting genetic algorithm II is used to solve the optimization problem. Comprehensive tests demonstrate that the ethylene yield is effectively improved based on the proposed framework. Since RVM does provide the distribution prediction instead of point estimation, the established model is expected to provide guidance for actual production operations under uncertainty.

Key words: Methanol to olefins, Relevance vector machine, Genetic algorithm, Operation optimization, Systems engineering, Process systems