摘要
为了节省电厂空间,提高设备集成应用,提出了一种溶液除湿与湿电相结合的工艺,使用除湿溶液在阳极板布膜,同时实现除尘与除湿功能。通过湿电平板降膜除湿过程的数值模拟与试验,探究了烟气及溶液参数对水热回收性能的影响。结果显示数学模型能够较好地反映该过程,试验工况下湿电平板降膜最高水、热回收率分别可达37.5%和35%,水蒸气所释放的汽化潜热大部分转移到溶液。除湿过程对于湿电除尘效果几乎没有影响,通过焓湿图分析及可视化比较证明,湿电平板降膜除湿可以实现白烟的削弱甚至完全消除。
To save space and improve the integration of equipments,a novel process combining the liquid dehumidification and wet electrostatic precipitator(WESP)is proposed in this paper for both dehumidification and dust removal of flue gas.Through the numerical simulation and experiment of the falling film dehumidification process of the wet electric flat plate,the influence of the flue gas and solution parameters on the water heat recovery performance is explored.The results show that the model can agree with the process quite well and the highest water and thermal efficiency is 37.5%and 35%respectively.Most of the latent heat is transferred to the solution.The dehumidification process has almost no effect on dust removal of WESP.Through the analysis of psychrometric chart and visual comparison,it is proved that the falling-film dehumidification in WESP can reduce even eliminate white smoke.
作者
张昊
董勇
赖艳华
崔琳
杨潇
ZHANG Hao;DONG Yong;LAI Yanhua;CUI Lin;YANG Xiao(School of Energy and Power Engineering,Shandong University,Jinan 250061,Shandong,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2021年第4期2249-2257,共9页
CIESC Journal
基金
国家重点研发计划项目(2017YFF0209803)。
关键词
燃煤烟气
水热回收
溶液除湿
数值模拟
白烟
coal-fired flue gas
water and heat recovery
solution dehumidification
numerical simulation
white smoke
