A PROCESS FOR THE PRODUCTION OF WATER-AND DUST-FREE SUGAR SURFACTANT GRANULES

摘要

Proposed is a new method for preparing granulated anhydrous and non-dusting sugar surfactants of high bulk density, wherein aqueous pastes of a) alkyland/or alkenyloligoglycosides and/or b) fatty acid-N-alkylpolyhydroxyalkyl amides with a solids content of at least 20 wt % are simultaneously pelletized and dried to a residual water content of less than 2 wt % in a horizontal thinfilm evaporator with rotating components, a temperature gradient being applied to the thin-film evaporator from product input to product discharge and a gas treatment being effected with counterflow air.