Agitated thin film dryer

(ATFD)

ACME manufacturers and supplies, Agitated Thin Film Dryers (ATFD) which are widely used to evaporate water or solvent to get the concentrated solutions or semi dry powder products in chemical, pharmaceuticals and food industries.

ATFD assembly consists of a cylindrical, vertical body with heating jacketed shell and rotor assembly having closely fitted hinged blades that rotate inside the shell. These hinged blades distribute the wet feed in the form of thin film over the heated shell wall. As there is heat transfer from jacket to main shell under smooth agitation, water/solvent evaporates and liquid converts to slurry, to cake and to semi dry powder or flakes and collected at the bottom receiver. The system is operated under vacuum for temperature sensitive products and atmospheric conditions for normal drying. It is one of the major equipment used for continuous processing of concentrated solution for drying.

FEATURES

Compact design
Degradation of heat-sensitive product is eliminated due to short residence time
Drying under vacuum condition with indirect heating is very effective for light and combustible or oxygen-sensitive products
Vacuum drying gives complete solvent recovery as compared to direct (air) contact dryer
Less maintenance increases efficiency of production
Low operating cost compared to other dryers due to vacuum operation which increases thermal efficiency up to 85%
Operating temperature and pressure flexibility
Uniform consistency of powdered product eliminates need of pulveriser for grinding in downstream step
Easy to operate
Turn-down ratio flexibility

APPLICATIONS

Recovery of solvents such as DMF, DMSO & Glycerin from salt
Drying of bulk drugs, intermediates, and recovery of important solvents from the feed
Drying of dyes, pigments to get the powdered product
Drying of effluent stream to get zero discharge
Drying of chemical and petro-chemical products to recover the powder or cakes