化工学报 ›› 2019, Vol. 70 ›› Issue (2): 516-524.DOI: 10.11949/j.issn.0438-1157.20181074

• 过程系统工程 • 上一篇    下一篇

基于截断器半连续操作的间歇过程性质集成

郭孝正(),刘琳琳(),张磊,都健   

  1. 大连理工大学化工学院,化工系统工程研究所,辽宁 大连 116024
  • 收稿日期:2018-09-26 修回日期:2018-10-24 出版日期:2019-02-05 发布日期:2019-02-05
  • 通讯作者: 刘琳琳
  • 作者简介:<named-content content-type="corresp-name">郭孝正</named-content>(1993—),男,硕士研究生,<email>dlutgxz@163.com</email>|刘琳琳(1985—),女,博士,副教授,<email>liulinlin@dlut.edu.cn</email>
  • 基金资助:
    国家自然科学基金项目(21878034, 21776035);中央高校基本科研业务费专项资金(DUT18LAB11)

Property integration of batch process based on interceptors in semi-continuous operation

Xiaozheng GUO(),Linlin LIU(),Lei ZHANG,Jian DU   

  1. Institute of Chemical Process Systems Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
  • Received:2018-09-26 Revised:2018-10-24 Online:2019-02-05 Published:2019-02-05
  • Contact: Linlin LIU

摘要:

生产过程对水质的要求不仅体现于杂质浓度,还包括毒性、pH、化学需氧量等流股性质,因此仅以杂质浓度作为水源使用及废水排放依据进行用水过程设计无法满足生产要求,有必要在用水网络综合过程中考虑多种性质的同时集成。针对间歇过程性质集成问题,在考虑环境约束的基础上,以最小年度总费用为目标,建立了包含半连续操作性质截断器的用水网络超结构。其中,截断器在不同时间间隔内可以按不同操作速率运行;在截断器前后分别设置缓冲储罐以满足水源水阱的间歇操作要求,允许前置缓冲储罐中的水源不经过截断器直接回用至水阱。算例计算结果表明,本文方法可以有效降低年度总费用,同时减少截断器数量,验证了本文方法的有效性和优越性。

关键词: 水网络, 间歇过程, 集成, 系统工程, 优化

Abstract:

In addition to concentration of contaminant, stream properties such as toxicity, pH, chemical oxygen demand are also important characters indicating water quality. Such situation would make the design of water-using process just according to contaminant concentration fail to meet the increasingly stringent production and environmental requirements, and prompt it to be necessary to consider the simultaneous integration of stream properties in water network synthesis. In this paper, a superstructure involving property interceptors in semi-continuous operation is established for the integration of batch water network with concerning environmental constraints and the minimum total annual cost target. The property interceptors can operate at various treating rates in different time intervals, and a series of tanks are placed before and after the interceptors to satisfy the batch operation of process sources and sinks, in assistance of which the sources in the tanks in front of interceptors are allowed to be reused to sinks directly without treated by interceptors. The calculation results show that the proposed method can effectively reduce the total annual cost and reduce the number of interceptors, which verifies the effectiveness and superiority of the proposed method.

Key words: water network, batch process, integration, system engineering, optimization

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