SPRAY DRYER OF BOILING BED WITH PASSIVE NOZZLE Russian patent published in 2015 - IPC F26B17/10 F26B3/12 

FIELD: heating, drying.

SUBSTANCE: invention refers to disperse material drying in boiling bed and may be applied in aniline-ink industry, food, pharmaceutical, microbiological, chemical and other industries. spray boiling-bed dryer with passive includes body with gas dispersing grate, vibrating plates, passive nozzle, vibration device; collection system with acoustic unit is positioned in the lower body part; solution sprinkler includes hollow cylindrical body consisting of cylindrical part with outer thread and two hollow cylinder-conical bands connected in series and coaxial to the body, nozzle with cylindrical fillet on its conical surface with external thread for nozzle connection to the lower cylinder-conical band of the body; opposite to solution feed side, there is an additional row of jets formed by at least three pairs of mutually perpendicular vertical channels for solution flow and horizontal channels forming output holes of each jet; conical side surface of the nozzle has 90° top angle; cylinder-conical band features two rows of throttle holes, so that hole axis projections on a horizontal surface in these rows are separated by an angle within optimum 7.5-60° range, and internal surfaces of throttle holes on cylinder-conical bands have helical surfaces.

EFFECT: improved dryer performance.

2 dwg