SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (5): 1103-1112.DOI: 10.1016/j.cjche.2018.10.018

• Process Systems Engineering and Process Safety • Previous Articles     Next Articles

A heuristic design method for batch water-using networks of multiple contaminants with regeneration unit

Aihong Li1, Changzhan Liu1, Zhiyong Liu2   

  1. 1 Department of Chemical Engineering, Chengde Petroleum College, Chengde 067000, China;
    2 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China
  • Received:2018-06-30 Revised:2018-09-12 Online:2019-06-27 Published:2019-05-28
  • Contact: Zhiyong Liu
  • Supported by:
    Supported by the Natural Science Foundation of Hebei Province (B2017202073) and the Foundation of Educational Commission of Hebei Province (Z2017032).

A heuristic design method for batch water-using networks of multiple contaminants with regeneration unit

Aihong Li1, Changzhan Liu1, Zhiyong Liu2   

  1. 1 Department of Chemical Engineering, Chengde Petroleum College, Chengde 067000, China;
    2 School of Chemical Engineering, Hebei University of Technology, Tianjin 300130, China
  • 通讯作者: Zhiyong Liu
  • 基金资助:
    Supported by the Natural Science Foundation of Hebei Province (B2017202073) and the Foundation of Educational Commission of Hebei Province (Z2017032).

Abstract: This work develops a heuristic method for the design of batch water-using networks of multiple contaminants with regeneration unit based on the concepts of concentration potential. A water-using network involving regeneration unit can be formed by adding the regenerated stream(s) into the network involving reuse only. In the design procedure of the network operated in a single batch mode, time is taken as the primary factor and concentration potentials as the secondary one. For the networks operated in a repeated mode, the design procedure is similar to that for continuous processes, besides designing the storage tanks with the rules proposed. Continuous regeneration unit is selected in this work. With the proposed method, the network structure corresponding to the minimum freshwater consumption can be obtained. It is shown that the method proposed in this article is simple, effective and has clear engineering meaning.

Key words: Water-using network, Batch process, Regeneration, Optimal design, Wastewater minimization

摘要: This work develops a heuristic method for the design of batch water-using networks of multiple contaminants with regeneration unit based on the concepts of concentration potential. A water-using network involving regeneration unit can be formed by adding the regenerated stream(s) into the network involving reuse only. In the design procedure of the network operated in a single batch mode, time is taken as the primary factor and concentration potentials as the secondary one. For the networks operated in a repeated mode, the design procedure is similar to that for continuous processes, besides designing the storage tanks with the rules proposed. Continuous regeneration unit is selected in this work. With the proposed method, the network structure corresponding to the minimum freshwater consumption can be obtained. It is shown that the method proposed in this article is simple, effective and has clear engineering meaning.

关键词: Water-using network, Batch process, Regeneration, Optimal design, Wastewater minimization