The flue gas after FGD emitted in coal-fired power plant contains a large amount of water vapor

which means a great waste of water resources. The liquid desiccant-based dehumidification is a feasible technology to recover water from flue gas. To study the dehumidification performance of this technology

a laboratory scale adiabatic tube falling film dehumidifier was built with CaCl2 solution as desiccant. The performance of this technology and the effect of solution temperature

concentration

mass transfer area and air inlet temperature was investigated. The mass transfer coefficient was given by 0.009-0.040 m·s-1. Moreover

a comparison between condensation and liquid desiccant-based dehumidification was carried out. The data showed that the water recovery efficiency would be more than 50%

which was much better than condensation method and confirmed the feasibility of this technology applied in power plants.