METHOD FOR PREPARING AND DETOXIFYING

摘要

The invention relates to a method for preparing and detoxifying an in particular thermoplastic material or for removing interfering substances or contaminants from said material, wherein the material is heated, mixed, and optionally disintegrated in at least one container (1) under vacuum, and wherein a rinsing medium is introduced into the container (1) and passes through at least one sub-area of the material, and the rinsing medium enriched or saturated with interfering substances is discharged from the container (1). According to the invention, the amount of the rinsing medium introduced into the container (1) is less than 5 Nm³, in particular less than 0.1 Nm³ (normal cubic meter Vn according to DIN 1343), per hour per kilogram of material or material throughput per hour for a gaseous rinsing medium and less than 0.1 liter per hour per kilogram of material or material throughput per hour for a liquid rinsing medium, wherein at the same time the vacuum in the container (1) is permanently held under 100 mbar.