Procedure and plant for increasing the enthalpy of humid air uses ejector fed with humid air flow with water content at or above 4 kg per kg of dry air

摘要

The procedure for increasing the enthalpy of humid air having an existing water content of or above 4 kg per kg of dry air consists of feeding an ejector (14) with a flow (Q2) of humid air with the afore mentioned water content and a flow (Q1) of superheated steam as a drive medium to produce an output flow (Q3) of humid air with a temperature above 105 [deg]C and a water content of 7 kg per kg of dry air, and preferably above 10 kg per kg of dry air. The superheated steam is produced by a boiler (16) at a temperature of 250 [deg]C and preferably above 400 [deg]C, and a pressure of at least 20 and preferably above 40 bars.