热力发电2019，Vol.48Issue(2)：45-52,8.DOI:10.19666/j.rlfd.201804111
陶瓷膜组件回收烟气水分及余热性能实验研究
Experimental research on performance of ceramic membrane module for water and waste heat recovery from flue gas
摘要
Abstract
Water and waste heat recovery by ceramic membrane module from flue gas is expected to be an effective way to save energy and water in thermal power plants. In order to explore the performance of ceramic membrane module to recover water and waste heat, a ceramic membrane preparation experiment was conducted, and a ceramic membrane module made of ceramic membrane tubes with pore sizes of 2 μm was used to recover the water vapor and waste heat from flue gas, and its performance of water and heat recovery was studied at different flue gas temperatures (40～100 ℃), flue gas flows (320～440 m3/h), cooling water temperatures (11-15 ℃) and cooling water flows (0.62～0.72 m3/h). The experimental results show that, the water recovery rate increased with the growth of flue gas temperature and flue gas flow, and decreased with the increasing cooling water temperature. The cooling water flow rate had little effect on the water recovery rate. Both the average convective condensation Nusselt number of the flue gas and the Zhukaukas correlation Nusselt number increased with the flue gas temperature and flue gas flow rate. The average convective condensation Nusselt number of the flue gas was always larger than that of the Zhukaukas correlation Nusselt number. The heat recovery efficiency increased with the flue gas temperature and the cooling water flow, and declined with the increasing cooling water flow rate. As the flow gas rate increased, the heat recovery efficiency increased at first and then decreased. The research results provide a reference for the practical application of ceramic membrane modules in thermal power plants.关键词
陶瓷复合膜/烟气余热/回收水速率/平均对流凝结Nu数/热回收效率/Zhukaukas关联式Key words
ceramic membrane/flue gas waste heat/water recovery rate/average convective condensation Nusselt number/heat recovery efficiency/Zhukaukas correlation分类
能源科技引用本文复制引用
陈海平,冯义钧,杨博然,韦佳娣,李祥升..陶瓷膜组件回收烟气水分及余热性能实验研究[J].热力发电,2019,48(2):45-52,8.基金项目
国家重点研发计划项目(2018YFB0604302) （2018YFB0604302）
