A round dryer for drying workpieces has a helically revolving workpiece passage in a work container and is provided with a heating device. The work container is closed at its upper side.

A round dryer for drying workpieces has a helically revolving workpiece passage in a work container and is provided with a heating device. The work container is closed at its upper side.

A heat transfer system includes a conveyor belt having air permeable outer and inner side walls and forming a conveyor stack having a plurality of tiers and a central space with a volume. A first portion of the volume and a first plurality of tiers are in a first sub-chamber and a second portion of the volume and a second plurality of tiers are in a second sub-chamber. The system further includes generating means which: produces, in the second sub-chamber, airflow in a horizontal direction towards the conveyor stack and in a horizontal and radial direction across the second plurality of tiers to enter the second portion of the volume; and draws, in the first sub-chamber, the airflow in a horizontal direction away from the conveyor stack and in a horizontal and radial direction to exit the first portion of the volume across the first plurality of tiers.

A vibratory round dryer comprises a container that is resiliently supported; and a working passage. A heating device, which is installed at the container, is provided for heating the drying agent and workpieces.

A vibratory round dryer comprises a container that is resiliently supported; and a working passage. A heating device, which is installed at the container, is provided for heating the drying agent and workpieces.

A fertilizer/soil conditioner or a fuel source material is formed by processing animal waste by-products through the use of a rotary biomass dryer system. The animal waste by-product includes without limitation manure obtained from cattle or swine; feed lot bedding, poultry litter, a digestate of animal waste by-products obtained from an anaerobic digester, municipal waste, waste meat renderings, waste meat, or a mixture thereof. The processed material may comprise a higher amount of ash and a lower amount of volatile material than the animal waste by-product. The processed material may be stored as a powder or processed into pellets, logs, pucks, briquettes or another convenient shape form.

A fertilizer/soil conditioner or a fuel source material is formed by processing animal waste by-products through the use of a rotary biomass dryer system. The animal waste by-product includes without limitation manure obtained from cattle or swine; feed lot bedding, poultry litter, a digestate of animal waste by-products obtained from an anaerobic digester, municipal waste, waste meat renderings, waste meat, or a mixture thereof. The processed material may comprise a higher amount of ash and a lower amount of volatile material than the animal waste by-product. The processed material may be stored as a powder or processed into pellets, logs, pucks, briquettes or another convenient shape form.

A round dryer for drying workpieces has a helically revolving workpiece passage in a work container and is provided with a heating device. The work container is closed at its upper side.

A round dryer for drying workpieces has a helically revolving workpiece passage in a work container and is provided with a heating device. The work container is closed at its upper side.

A waste management system ad method for processing and reusing organic waste such as food, green compost, and the like. The waste is delivered from a shredder to three sequential augers, each having a rotating shaft and a helically-wound blade spiraling therealong. The blades of the augers compress the waste and extract liquid therefrom to be drained into a tank for subsequent use as a fuel or a fertilizer. The remaining organic waste is then heated and dried in a dual drum dryer. From the dryer, the waste is delivered to a pelletizer having an apertured shaping plate extending thereacross through which the waste is pushed and shaped into solid pellets. The hot and dry pellets are cooled within a dual drum cooler. From the cooler, the organic waste pellets are collected, packaged and distributed.