发电技术 ›› 2019, Vol. 40 ›› Issue (3): 258-264.DOI: 10.12096/j.2096-4528.pgt.19068

• 燃煤发电系统能源高效清洁利用 • 上一篇    下一篇

烟道凝聚器流场及细颗粒凝聚特性研究

刘含笑1(),陈招妹1,崔盈1,刘志波2,郭高飞1,孟银灿1,刘美玲1   

  1. 1 浙江菲达环保科技股份有限公司, 浙江省 诸暨市 311800
    2 绥中发电有限责任公司, 辽宁省 葫芦岛市 125222
  • 收稿日期:2019-04-28 出版日期:2019-06-30 发布日期:2019-07-02
  • 作者简介:刘含笑(1987),男,硕士,工程师,主要从事电力环保技术研发工作, gutounan@163.com
  • 基金资助:
    国家重点研发计划项目(2016YFC0209107)

Study on Flow Field and Fine Particles Agglomeration Characteristics of Flue Agglomerator

Hanxiao LIU1(),Zhaomei CHEN1,Ying CUI1,Zhibo LIU2,Gaofei GUO1,Yincan MENG1,Meiling LIU1   

  1. 1 Zhejiang Feida Environmental Science & Technology Co., Ltd., Zhuji 311800, Zhejiang Province, China
    2 Suizhong Power Generation Co., Ltd., Huludao 125222, Liaoning Province, China
  • Received:2019-04-28 Published:2019-06-30 Online:2019-07-02
  • Supported by:
    National Key Research and Development Program of China(2016YFC0209107)

摘要:

为研究烟道凝聚器的凝聚机制及颗粒物减排特性,通过商业计算流体力学(computational fluid dynamics,CFD)软件,模拟并得到了凝聚器湍流区定常/非定常工况条件下的流场特性;理论计算了凝聚器内颗粒的凝聚过程,并通过扫描电镜进行了验证;实验室中凝聚器对PM2.5的减排幅度为20.8%,实际工程中,300 MW和660 MW机组PM2.5的减排幅度分别为30.1%和37%。研究结果可为颗粒凝聚技术的大规模工程应用提供参考。

关键词: 燃煤电厂, 凝聚器, 细颗粒物, 湍流

Abstract:

In order to study the aggregation mechanism and particulate emission reduction characteristics of the flue agglomerator, the flow field characteristics of the turbulent region of the agglomerator under steady/unsteady conditions were simulated and obtained by commercial computational fluid dynamics (CFD) software.The agglomeration process of particles in the agglomerator was theoretically calculated and verified by scanning electron microscope (SEM). The agglomerator in the laboratory reduced PM2.5 emissions by 20.8%, compared with 30.1% and 37% in the actual project. The results can provide reference for large-scale engineering application of particle coagulation technology.

Key words: coal-fired power plant, agglomerator, fine particulate matter, turbulence