FIELD: air cleaning. SUBSTANCE: method includes loading melt and feeding air into granulation installation, transferring granulate, and take off effluent air. Before taking off air, a part of product present in vapor form behind the loading place is crystallized and discharged in the form of solid part of product. Apparatus has draft hood over cooling tape provided with insertions for vapor-form product crystallization and controllable perforations directing air in insertion zone. Insertions are disposed in the zone between melt-feeding means and draft pipe. EFFECT: enhanced efficiency of process. 12 cl, 9 dwg
