高级搜索

低低温电除尘器烟风道流线型设计与分析

,  ,  ,  ,  ,  , 

downloadPDF

上一篇

下一篇

叶兴联, 李立锋, 章华熔, 赖晖才, 刘栋栋, 郭俊, 林翔. 低低温电除尘器烟风道流线型设计与分析[J]. 环境工程学报, 2018, 12(11): 3274-3280. doi: 10.12030/j.cjee.201805011
引用本文: 叶兴联, 李立锋, 章华熔, 赖晖才, 刘栋栋, 郭俊, 林翔. 低低温电除尘器烟风道流线型设计与分析[J]. 环境工程学报, 2018, 12(11): 3274-3280. doi: 10.12030/j.cjee.201805011
shu
YE Xinglian, LI Lifeng, ZHANG Huarong, LAI Huicai, LIU Dongdong, GUO Jun, LIN Xiang. Design and analysis of streamlined shape flue gas duct for low-low temperature electrostatic precipitator[J]. Chinese Journal of Environmental Engineering, 2018, 12(11): 3274-3280. doi: 10.12030/j.cjee.201805011
Citation: YE Xinglian, LI Lifeng, ZHANG Huarong, LAI Huicai, LIU Dongdong, GUO Jun, LIN Xiang. Design and analysis of streamlined shape flue gas duct for low-low temperature electrostatic precipitator[J]. Chinese Journal of Environmental Engineering, 2018, 12(11): 3274-3280. doi: 10.12030/j.cjee.201805011
shu

低低温电除尘器烟风道流线型设计与分析

  • 1.

    福建龙净环保股份有限公司，龙岩 364000

  • 2.

    东北大学冶金学院，沈阳 110819

  • 3.

    国家环境保护电力工业烟尘治理工程技术中心，龙岩 364000

  • 基金项目:

    国家重点研发计划项目（2016YFC0203703）

Design and analysis of streamlined shape flue gas duct for low-low temperature electrostatic precipitator

  • 1.

    Fujian Longking Co.Ltd., Longyan 364000, China

  • 2.

    School of Metallurgy,Northeastern University, Shenyang 110819, China

  • 3.

    State Environmental Protection Engineering and Technology Center for Power Industrial Dust Control, Longyan 364000, China

  • Fund Project:

  • 摘要: 燃煤电厂烟风道用于输送烟气、冷风等介质，其设计优化不仅影响烟风道的流场分布均匀性、流量分配和系统阻力，而且会影响相关设备的运行状态。为了解决常规布置烟风道存在的流场均匀性较差、流量偏差大、阻力大等问题，结合某电厂1 000 MW机组配套低低温电除尘器进出口烟道，采用多尺度的研究方法，对常规烟风道和流线型烟风道进行设计与分析研究，对不同布置方式烟风道的流场分布均匀性、流量偏差、烟道阻力进行对比分析，并通过物理模型实验对CFD模拟的结果进行验证。CFD模拟结果与物模实验结果吻合性良好；流线型烟风道的布置较常规烟风道更简单，且流场分布均匀性、流量偏差、阻力都比常规烟风道有较大改善。采用流线型烟风道可起到较明显的节能降耗作用，为燃煤电厂烟风道优化设计提供参考。
    Abstract: The flue gas duct in a coal-fired power plant is used to convey the flue gas, cold air and other media. Its design optimization not only affects the uniformity of flow field distribution, the flow allocation and the system resistance, but also affects the operation state of the related devices. In order to solve the problem of poor uniformity of flow field, large flow deviation and resistance in the conventional flue gas duct, a multi-scale numerical method, with combination of the inlet and outlet duct of a low-low temperature electrostatic precipitator for 1 000 MW unit in a power plant, was used to design and analyze the conventional flue gas duct and streamlined shape flue gas duct, respectively. A comparative analysis on the uniformity of flow field distribution, flow deviation and resistance in flue gas duct with different layouts was made, and the physical model tests were conducted to verify the CFD simulation results. And a good fitting was observed between the CFD simulation results and the physical model test ones. Compared with the conventional flue gas duct, the streamlined shape duct presents a simpler layout, and an improved flow field distribution uniformity, flow deviation and resistance. This implied that the streamlined shape duct usage could lead to a remarkable energy saving, which will provide a reference for optimization design of flue gas duct in the coal-fired power plants.
  • 加载中
  • [1] 刘明,孟桂祥,严俊杰,等.火电厂除尘器前烟道流场性能诊断与优化[J]. 中国电机工程学报,2013,33(11):1-6
    [2] 叶兴联.CFD在电除尘器超低排放设计中的应用[J]. 安全与环境学报,2018,18(2):743-750
    [3] 车得福,庄正宁. 锅炉[M]. 西安:西安交通大学出版社,2008:65-66
    [4] 李战国,刘志成,贺军,等.旋风分离器的入口烟道布置对性能的影响[J]. 中国电机工程学报,2009,29(17):1-7
    [5] 唐永恒. 锅炉尾部烟道改造前后结果分析[J]. 广东电力,2001,14(3):74-76
    [6] 仇中柱,潘卫国,李芃,等.数值模拟与模化在电除尘器改造中的应用[J].华东电力,2010,38(6):927-930
    [7] 林宗虎,徐通模. 实用锅炉手册[M]. 北京:化学工业出版社,1999:653-683
    [8] 电力行业规划设计标准化技术委员会. 火力发电厂烟风煤粉管道设计技术规程:DL/T 5121-2000[S]. 北京:中国电力出版社,2000
    [9] 王有锋,姜武,张辉,等.电厂烟风道异型件阻力系数的数值计算方法[J].电力科学与工程,2006(3):47-49
    [10] MEES P A J, NANDAKUMAR K, MASLIYAH J H.Instability and transitions of flow in a curved squrae duct:The developed of two pairs of dean vortices[J].Journal of Fluid Mechanics,2006,314:227-246 10.1017/S0022112096000298
    [11] SUDO K, SUMIDA M, HIBARA H.Experimental investigation on turbulent flow in a circular-sectioned 90-degree bend[J].Experiments in Fluids,1998,25:42-49 10.1007/s003480050206
    [12] SUDO K, SUMIDA M, HIBARA H.Experimental investigation on turbulent flow in a square-sectioned 90-degree bend[J].Experiments in Fluids,2001,30:246-252 10.1007/s003480000157
    [13] 李伟科. 华能海门电厂1 000 MW机组电除尘器进、出口烟道的优化设计[J].电力建设, 2009,30(7): 55-57
    [14] 陶克轩,常毅君,张波,等. 电厂除尘器入口烟道数值模拟及改造[J]. 热力发电, 2011, 40(1):52-54
    [15] YE X L,SU Y B,GUO B Y, et al.Multi-scale simulation of the gas flow through electrostatic precipitators[J].Applied Mathematical Modelling,2016,40(21/22)::9514-9526 10.1016/j.apm.2016.06.023
    [16] GUO B Y,HOU Q F,YU A B,et al.Numerical modelling of the gas flow through perforated plates[J].Chemical Engineering Research and Design,2013,91:403-408 10.1016/j.cherd.2012.10.004
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  2581
  • HTML全文浏览数:  2465
  • PDF下载数:  87
  • 施引文献:  0
出版历程
  • 刊出日期:  2018-11-12

低低温电除尘器烟风道流线型设计与分析

  • 1. 福建龙净环保股份有限公司，龙岩 364000
  • 2. 东北大学冶金学院，沈阳 110819
  • 3. 国家环境保护电力工业烟尘治理工程技术中心，龙岩 364000
基金项目:

国家重点研发计划项目（2016YFC0203703）

摘要: 燃煤电厂烟风道用于输送烟气、冷风等介质，其设计优化不仅影响烟风道的流场分布均匀性、流量分配和系统阻力，而且会影响相关设备的运行状态。为了解决常规布置烟风道存在的流场均匀性较差、流量偏差大、阻力大等问题，结合某电厂1 000 MW机组配套低低温电除尘器进出口烟道，采用多尺度的研究方法，对常规烟风道和流线型烟风道进行设计与分析研究，对不同布置方式烟风道的流场分布均匀性、流量偏差、烟道阻力进行对比分析，并通过物理模型实验对CFD模拟的结果进行验证。CFD模拟结果与物模实验结果吻合性良好；流线型烟风道的布置较常规烟风道更简单，且流场分布均匀性、流量偏差、阻力都比常规烟风道有较大改善。采用流线型烟风道可起到较明显的节能降耗作用，为燃煤电厂烟风道优化设计提供参考。

English Abstract

参考文献 (16)

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心