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.