湿烟气冷凝过程传热计算及工程应用

刘江宁, 雷承勇

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动力工程学报 ›› 2018, Vol. 38 ›› Issue (12) : 1004-1007.
工程热物理

湿烟气冷凝过程传热计算及工程应用

  • 刘江宁1, 雷承勇2
作者信息 +

Heat Transfer Calculation for Wet Flue Gas Condensation Process and its Engineering Application

  • LIU Jiangning1, LEI Chengyong2
Author information +
History +

摘要

根据竖壁膜式冷凝的边界层传热传质原理得出了无量纲因子Ln对冷凝过程表面传热系数的影响,进行了湿烟气在多排管束换热器中的冷凝传热试验,并由试验数据拟合得到烟气冷凝过程Nu的准则方程。在此基础上研制了大型电站锅炉烟气冷凝换热器并成功运用于某电厂1 000 MW机组。结果表明:烟气冷凝换热器实际运行性能参数与设计值吻合,该拟合式可用于工程设计。

Abstract

By analyzing the effects of dimensionless factor Ln on the surface heat transfer coefficient during condensation process based on the principle of heat and mass transfer in the boundary layer of vertical wall film condensation, a number of condensation heat-transfer tests were conducted on the process of wet flue gas passing through the heat exchangers with multi-row tube bundles, and subsequently an Nu formula was fitted for the heat-transfer process using above experimental data. On this basis, a flue gas condensing heat exchanger was developed for large power plant boilers, which was successfully applied to a 1 000 MW power unit. Results show that the actual performance parameters of the flue gas condenser developed agree well with its design values, and the formula fitted may be used in engineering designs of similar flue gas condensers.

关键词

湿烟气 / 超低排放 / 烟气冷凝 / 传热计算

Key words

wet flue gas / ultra-low emission / flue gas condensation / heat-transfer calculation

引用本文

导出引用
刘江宁, 雷承勇. 湿烟气冷凝过程传热计算及工程应用. 动力工程学报. 2018, 38(12): 1004-1007
LIU Jiangning, LEI Chengyong. Heat Transfer Calculation for Wet Flue Gas Condensation Process and its Engineering Application. Journal of Chinese Society of Power Engineering. 2018, 38(12): 1004-1007

参考文献

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