华电技术 ›› 2021, Vol. 43 ›› Issue (5): 59-63.doi: 10.3969/j.issn.1674-1951.2021.05.009

• 节能与环保 • 上一篇    下一篇

脱硫浆液引射增压装置的理论计算研究

张锡乾(), 杨彭飞(), 吴冲()   

  1. 中国华电科工集团有限公司,北京 100070
  • 收稿日期:2020-10-30 修回日期:2021-02-18 出版日期:2021-05-25 发布日期:2021-05-18
  • 作者简介:张锡乾(1988-),男,河北邯郸人,工程师,硕士,从事电厂环保治理、余热利用方面的设计及研发工作(E-mail:zhangxq@chec.com.cn)。
    杨彭飞(1987-),男,河北任丘人,工程师,硕士,从事燃煤电厂环保改造项目工艺设计及研发工作(E-mail:yangpf@chec.com.cn)。
    吴冲(1978-),男,河北河间人,正高级工程师,硕士,从事大气污染控制技术研究工作(E-mail:wuc@chec.com.cn)。
  • 基金资助:
    中国华电科工科技项目(CHECKJ19-01-26)

Study on theoretical calculation of desulfurization slurry injection pressurization device

ZHANG Xiqian(), YANG Pengfei(), WU Chong()   

  1. China Huadian Engineering Company Limited,Beijing 100070,China
  • Received:2020-10-30 Revised:2021-02-18 Online:2021-05-25 Published:2021-05-18

摘要:

燃煤电厂通过降低湿法脱硫系统出口烟气温度和烟气含湿量可有效消除石膏雨,并实现脱硫节水及减少超细颗粒物和气溶胶等可凝结颗粒物的排放。部分燃煤电厂采用在脱硫循环浆液管道上增设浆液冷却装置的方法降低烟气温度及含湿量,导致浆液循环管道阻力增加,浆液循环泵出力不足,脱硫效率下降。为解决这一问题,从流体力学方面进行了理论分析,给出了脱硫浆液引射增压装置设计理论计算。以某脱硫项目为例进行了引射增压装置的方案设计,理论上验证了设计方法的可行性,为引射增压装置的实际设计提供了理论指导。

关键词: 燃煤电厂, 脱硫节水, 可凝结颗粒物, 湿法脱硫系统, 浆液冷却装置, 引射增压装置

Abstract:

A coal-fired power plant can effectively eliminate gypsum rain by reducing the flue gas temperature and moisture content at the outlet of wet desulfurization system,realize desulfurization water saving and reduce the emission of condensable particulate matters such as ultrafine particles and aerosols.Some coal-fired power plants reduce the flue gas temperature and moisture content by installing cooling devices on desulfurization circulating slurry pipelines,resulting in increased resistance in the pipelines,insufficient outputs of the slurry circulating pumps and decreased desulfurization efficiencies.To solve these problems,by carrying out a theoretical analysis from the aspect of fluid mechanics,a theoretical design for a slurry injection and pressurization device was obtained.Taking a desulfurization project as an example,the design was proven to be feasible and provides theoretical guidance for the design of other slurry injection and pressurization devices.

Key words: coal-fired power plant, desulfurization water saving, condensable particulate matter, wet desulfurization system, slurry cooling device, injection and pressurization device

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