Spray Coolers

Product Details:

Rotary Atomizer Type Spray Coolers is defined as a process by which a melt is formed into particles of spherical shape by spraying the melt into a cooling chamber through which ambient or cooled, low-temperature air is passing. Rotary (wheel) atomisers and nozzles are used to spray the melt. Spray cooling finds applications in the chemical, food, and pharmaceutical industries. It is a most convenient method of transforming melted feedstocks into free-flowing particulates of controlled particle size.

Reference Products spray cooler is used for following products

• Fats Glycerides Hydrates
• Inorganic/organic melts
• Stearic acid/stearates
• Glycerol Monostearate (GMS)

The selection of a spray cooling plant design depends upon the particle size specified as well as the need for post-cooling / crystallisation for the cooled product

Fine particle products with mean particle size 50-150 micron; co-current conical based cooling chamber with high-speed rotary atomization.

Coarse particle products with mean particle size 150-300 micron; conical based cooling chamber with fountain nozzle.

Utilising closed cycle spray cooling enables optimisation of cooling energy requirements and product quality

Main Components of Spray cooler-

• Cooling Chamber
• Conveying Duct
• Cyclone Separator
• Centrifugal fans
• Heat exchanger
• Feed tank- Jacketed
• Feed Pump
• Feed line and spraying nozzle
• Instruments- Pressure Switch, SRV, Temperature controller, VFD
• Working Principle of the spray Cooler-
• Hot melt is sprayed in the cooling chamber consists of cool air.
• Heat transfer takes place between the hot particle and cool air, forming a fine powder.
• Proper cooling and particle hardening of particle take place in conveying duct.
• In cyclone separator, air and powder get separated and powder is discharged through the rotary valve.
• Air containing less amount of fine particles comes to centrifugal fan.
• The air gets chilled in the heat exchanger and again supplied to the chamber.
• Salient features of spray cooler manufactured by Supreet-
• Single point collection of powder. This ensures less handling of finish product.
• No mitre bends in the ducting avoids material deposition in the system.
• Pressure from 10 kg/cm² to 200 kg/cm² can be achieved.
• Thick slurries can be handled and sprayed by giving high pressure.
• Very low maintenance is required (periodical cleaning of heat exchanger tubes).
• All valves are jacketed only- avoids external heating of valve body during start up.
• The total plant is automatic and no man interference is required. Only one man for the powder collection is required

Product Details:

Nozzle Atomiser Type Spray Coolers is used to spray the melt formed particles of spherical shape by spraying the melt into a cooling chamber through which ambient or cooled, low-temperature air is passing.

These are applied in the chemical, food, and pharmaceutical industries. This has proven to be a most convenient method of transforming melted feedstock into free-flowing particulates of controlled particle size.