A single pass, multiple stage, rotary drum heat exchange dryer (22) is provided for drying products such as distillers grains and includes a tubular shell (64) with a moist product inlet (66), an opposed dried product outlet (70), and an internal drying chamber (78). The chamber (78) includes a convection...http://www.google.es/patents/US6584699?utm_source=gb-gplus-sharePatente US6584699 - Three stage single pass high density drying apparatus for particulate materials
Three stage single pass high density drying apparatus for particulate materials
