The present invention relates to a method for drying an effective substance useful in detergents and cleaning agents using superheated steam,

摘要

Aqueous active substances or mixtures of active substances suitable for use as wetting agents, cleansing agents and / or cleaning agents and / or in the preparation, which can also be used as aqueous preparations, are dried using superheated steam as a drying gas, Once released, it is recycled to the drying step. The energy required for moisture evaporation is supplied to at least most of the circulating vapor stream by indirect heat exchange, in order to obtain a material of high quality, especially pale and / or carbonate-free.