Convective dryers: Belt, drum, and fluid bed dryers

The rotary drum dryer is suitable for drying woody biomass, agricultural products, and municipal solid waste (MSW). For the production of alternative fuels as well as in the area of waste-to-energy, ANDRITZ Vandenbroek rotary drum dryers are applied to decrease the moisture of the material to the desired level fo downstream process steps.

The patented ANDRITZ AG belt drying system (BDS) is characterized by its flexibility and ability to use a wide range of energy sources, particularly low-grade waste energy. BDS can be used for drying a broad range of products, such as industrial and municipal sludge, cow manure, biomass, as well as pre-treated municipal solid waste.

ANDRITZ supplies the complete process, not only for sludge treatment, but also for biomass drying - from wet milling to drying, fine milling and pelleting, all from a single source.

The ANDRITZ drum drying system, DDS, dries and granulates different types of municipal, industrial, and agricultural sludges. The dewatered sludge is granulated in a mixer tailored to the application. It is then dried in the triple-pass drum (three concentric cylinders revolving around a joint axis) in a convective drying process to < 10% residual moisture. The sludge is conveyed pneumatically by the stream of hot gases, ensuring an evenly dried, pasteurized product.

ANDRITZ offers fluid bed systems for various industries, from the environment to biomass, to food and animal feed, and on to minerals and chemicals.

SmartCLEAN is an innovative belt-washing device for belt dryers that maximizes drying efficiency. The improved rotating design allows optimum cleaning with minimal use of high-pressure water. SmartCLEAN guarantees stable product quality over the whole belt width.