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过程工程学报 ›› 2022, Vol. 22 ›› Issue (1): 127-134.DOI: 10.12034/j.issn.1009-606X.220373

• 研究论文 • 上一篇    下一篇

基于全过程污染控制策略的钢铁工业园区水网络全局优化

赵月红1,2,3*， 谢勇冰1,3， 曹宏斌1,3， 温浩1   

  1. 1. 中国科学院过程工程研究所，北京 100190 2. 中国科学院大学，北京 100049 3. 中国科学院绿色过程与工程重点实验，北京 100190
  • 收稿日期:2020-11-19 修回日期:2021-03-01 出版日期:2022-01-28 发布日期:2022-01-28
  • 通讯作者: 赵月红 yhzhao@ipe.ac.cn
  • 作者简介:赵月红(1973-)，男，内蒙古自治区包头市人，博士，副研究员，化工过程系统工程，E-mail: yhzhao@ipe.ac.cn.
  • 基金资助:
    国家科技重大专项资助项目;国家自然科学基金资助项目

Global optimization of water network in the steel industrial park driven by the strategy of whole process pollution control

Yuehong ZHAO1,2,3*,  Yongbing XIE1,3,  Hongbin CAO1,3,  Hao WEN1   

  1. 1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China 2. University of Chinese Academy of Sciences, Beijing 100049, China 3. CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2020-11-19 Revised:2021-03-01 Online:2022-01-28 Published:2022-01-28
  • Supported by:
    ;National Science Fund subsidized project

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摘要： 作为典型的高耗水工业，节水减排是我国钢铁工业可持续发展亟须解决的关键问题之一。本研究基于全过程污染控制策略，提出了面向钢铁工业园区水网络特点的多尺度优化建模方法，充分考虑了钢铁园区涉水单元-工序水网络-园区水网络等不同尺度水系统的用排水特点及相互作用，有助于进一步发掘园区节水减排新空间。在此基础上建立了园区水网络全局优化模型，利用数学规划方法来探索综合用水成本最低的园区水网络优化方案。一年产能为500万吨钢材的钢铁工业园区水网络优化案例研究表明，采用全过程污染控制策略的钢铁园区水网络全局优化方案，综合用水成本、新水用量及新水成本占比等用水指标与其他采用局部水污染控制技术的方案相比有较大幅度的降低，与园区现用水指标相比，各指标均降低20%以上。案例研究表明所提出的园区水网络优化模型可行有效，优化结果对于钢铁园区水污染控制技术的集成和水网络全局优化方案的精准确定具有重要的参考价值。

关键词: 全过程污染控制, 钢铁工业园区, 水网络, 多尺度, 优化

Abstract: As a high water consumption industry, water conservation is one of the challenges needed to be conquered in order to achieve the sustainable development for Chinese iron and steel industry. Based on the idea of Whole Process Pollution Control (WPPC), global optimization of water network in the steel industrial park was carried out in this work. Firstly, the configurational and operational characteristics of the water network in the typical steel industrial park were investigated, and a multi-scale modeling method was proposed to describe the water network. Wherein different scale water systems, including water-use/treatment unit, process-scale water network, park-scale water network, and their interactions were discussed. Secondly, a superstructure was built to represent all possible water network configurations. Thirdly, an optimization model tailored for the steel industrial park was set up with the aim of minimizing the comprehensive water-use cost. The water conservation and pollutants balance of different scale water systems, together with some limits on structure and operation of the water network, were described as constraints. Lastly, to validate the proposed model, global optimization of water network in a steel industrial park with 5 million tons of crude steel production capacity per year was studied by constructing and solving the mathematical model. The results of study cases showed that the case driven by WPCC strategy achieved the best performance compared to other cases, i.e., lowest comprehensive water-use cost and lowest fresh water consumption. Compared to the current water-use index of the studied park, the index of the case driven by WPCC decreased by more than 20% at least. In terms of the results, the case studies also indicated the applicability of the proposed multi-scale optimization model, and all these data can help the steel industrial park to make decisions for implementing global optimization of water network.

Key words: Whole process pollution control, Steel industrial park, Water network, multi-scale, Optimization