Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (04): 1173-1179.DOI: 10.16085/j.issn.1000-6613.2017.04.003

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Optimization of water-using network in batch processes involving regeneration operation

CHEN Yanling1, LIU Linlin1,2, HE Zhancong1, DENG Chao1, DU Jian1   

  1. 1 Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
    2 Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education(MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2016-08-26 Revised:2016-09-08 Online:2017-04-05 Published:2017-04-05

考虑再生操作的间歇过程用水网络优化

陈雁玲1, 刘琳琳1,2, 何湛聪1, 邓超1, 都健1   

  1. 1 大连理工大学化工系统工程研究所, 辽宁 大连 116024;
    2 大连理工大学环境学院工业生态与环境工程教育部重点实验室, 辽宁 大连 116024
  • 通讯作者: 都健,教授,研究方向为化工系统工程。E-mail:dujian@dlut.edu.cn。
  • 作者简介:陈雁玲(1991-),女,硕士研究生。
  • 基金资助:
    国家自然科学基金项目(21576036)。

Abstract: Currently,the problem of water scarcity and water pollution is increasingly severe. It is an effective way of fresh water conservation and environmental protection by reusing regenerated wastewater. In order to achieve reasonable utilization of process sources with different qualities for maximum reuse of water in batch processes,a superstructure of water-using network was proposed involving source-sink,source-intermediate storage tank-sink,source-continuous regeneration system-sink and source-wastewater disposal system. The mathematical formulation is based on a continuous time representation. With multi-objective optimization design method,design problems for minimizing the freshwater consumption,the regeneration rate of the regeneration unit and the number of intermediate storage tanks can be achieved in turn. Finally,an applicable network configuration with the minimum amount of freshwater consumption and wastewater discharge was obtained. Additionally,in consideration of the actual production process of multiple batch cycles,this paper focused on the design,analysis and optimization problem of water-using network from start-up to the steady state. A case study was solved to demonstrate the effectiveness of the proposed approach.

Key words: water-using network, batch processes, waste water, regeneration, optimization

摘要: 当前,水资源短缺与污染问题日益严重,废水再生后回用对节约水源和保护环境具有重要的意义。针对间歇过程,为了合理利用不同品质的过程水源,实现用水系统的最大水回用,本文建立了一个包含水源-水阱、水源-中间储罐-水阱、水源-连续再生体系-水阱与水源-废水处理系统的用水网络超结构,基于连续时间模型建立数学模型,并采用多目标分步法依次优化新鲜水用量、再生单元的再生速率以及中间储罐数目,最终得到新鲜水消耗量以及废水排放量最小的最优用水网络结构。同时,为贴近实际生产中的多操作周期过程,本文针对用水系统从启动周期到稳定周期的全过程,进行了用水网络的设计、分析与优化。最后通过算例计算,验证了本文所提方法的合理有效性。

关键词: 用水网络, 间歇过程, 废水, 再生, 优化

CLC Number: 

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