Varcogroup spray dryers utilize an atomizer to convert liquids into powders in an energy-efficient manner. This gentle drying process is particularly suitable for products that are sensitive to heat. The atomizer breaks down the liquid into small droplets, which are then sprayed into a stream of hot air. Within a matter of seconds, most of the water is removed, leaving behind dry powder. The air and powder are then separated using a cyclone and/or a filter system. Further processing of the powder can be done downstream, such as using fluid beds, coolers, and agglomerators, to prepare it for packaging.

CHARACTERISTICS

• Varco Group spray dryers are individually designed to meet the specific requirements of our customers and offer a high flexibility of design.
• Atomization can be provided by centrifugal wheels, rotary atomizers, pressure nozzles or twin-fluid nozzles. This range of systems allows the specific particle size requirements to be met for each application.
• Direct or indirect heating systems are supplied depending upon the industry standards for the product. Inlet temperatures may range from 100°C for very heat sensitive products to 750°C for some inert chemicals.
• Closed circuit and self-inertized dryers are supplied to allow organic solvents to be dried and to meet the environmental specifications.
• Different chamber configurations are used along with a range of residence times to provide the desired particle size and moisture content in the finished powder.
• Agglomerated products are produced by using integrated fluid beds, fines recycle systems and external fluid beds. These powders are widely used in the food industries.