中国电力 ›› 2018, Vol. 51 ›› Issue (6): 42-47.DOI: 10.11930/j.issn.1004-9649.201802041

• 燃煤电站低成本超低排放技术专栏 • 上一篇    下一篇

脱硫废水零排放系统关键参数数值模拟研究

翁卫国, 孙建国, 李钦武, 周灿, 蒋善行   

  1. 浙江浩普环保工程有限公司, 浙江 杭州 310012
  • 收稿日期:2018-02-09 出版日期:2018-06-05 发布日期:2018-06-12
  • 作者简介:翁卫国(1970-),男,工学博士,从事燃煤大气污染物控制研究,E-mail:wgweng@163.com
  • 基金资助:
    国家重点研发计划资助项目(2016YFC0203704)。

Numerical Simulation of Key Parameters of Zero Discharge System for WFGD Wastewater

WENG Weiguo, SUN Jianguo, LI Qinwu, ZHOU Can, JIANG Shanxing   

  1. Zhejiang Hope Environmental Protection Engineering Co., Ltd., Hangzhou 310012, China
  • Received:2018-02-09 Online:2018-06-05 Published:2018-06-12
  • Supported by:
    This work is supported by National Key Research and Development Program (No.2016YFC0203704).

摘要: 利用数值模拟技术对脱硫废水在电除尘器前烟道中的蒸发技术进行了研究,分析了液滴粒径、烟气温度、烟气流速、废水量、喷射速度、喷射角度等参数对液滴停留时间的影响规律。结果表明,烟气温度越高,液滴粒径越小,喷射量越小,液滴的停留时间就越短;随着烟气流速、喷射速度、喷射角度增大,停留时间呈现不同的变化趋势。研究结果可对工程选型、设计优化提供支撑。

关键词: 燃煤发电, 烟气脱硫, 数值模拟, 脱硫废水, 零排放

Abstract: The evaporation technology of WFGD wastewater in the flue gas before it enters ESP is studied by numerical simulation. The impacts of the six parameters on droplet residence time and evaporation distance are investigated, i.e., droplet size, flue gas temperature, flue gas velocity, wastewater volume, jet velocity and jet angle of wastewater. The results show that the higher of the flue gas temperature, the smaller of the droplet size and the injection amount, the less residence time of the droplet will last. With the increase of flue gas velocity, injection velocity and injection angle, the residence time tends to decrease first and then rise afterwards. The research results can provide support for project decision-making process and design optimization.

Key words: coal-fired power generation, flue gas desulfurization, numerical simulation, WFGD waste water, zero-emission

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