METHOD AND DEVICE FOR CREATING A CONTINUOUS CARRIER GAS/STEAM VAPOUR FLOW

摘要

The invention relates to a method for generating a continuous carrier gas / vapor mixture stream (S) comprising adjustable components of a carrier gas, in particular inert gas, and a vapor of a liquid, in particular water. To enable this to adjust the concentration of the vapor component with low delay and high accuracy in a wide range, the inventive method comprises the steps of: the same providing a first dose carrier gas flow (g1) and use it as the carrier gas / vapor mixture stream (S ) in the case of adjusted to zero vapor content in the carrier gas / vapor mixture stream (S); Providing a second dose carrier gas flow (g2) providing a metered, saturated with steam carrier gas / vapor mixture stream (gtgd) mixing the second dose carrier gas flow (g2) and the metered saturated carrier gas / vapor mixture stream (gtgd) for providing a first gaseous mixture stream (ms1) and using the same as the carrier gas / vapor mixture stream (S) in the case of a relatively low vapor portion to be adjusted in the carrier gas / vapor mixture stream (S); Providing a metered flow of liquid (f) and supplying it to an evaporation / mixing means (24) for evaporating the liquid and mixing with the first gaseous mixture stream (MS1) for providing a second gaseous mixture stream (ms2) and using the same as the carrier gas / vapor mixture stream (S) in the event of relatively high vapor portion to be adjusted in the carrier gas / vapor mixture stream (S).