Devices, systems, and methods for drying a bulk waste product, such as animal waste, having a moisture content of 95% or more water can include a trough configured to receive the bulk waste product and to dispense it in a form suitable for convective drying, one or more conveyors having an air-permeable conveyor belt, each conveyor receiving the waste product from the trough and transporting the waste product along a transport path; and one or more air moving devices (AMDs) that pass air through the air-permeable conveyor belt and across the waste product as it is transported along the transport path to transform the bulk waste product into a dried waste product having a moisture content of about 5% to about 20%, inclusive.

The invention relates to a process and apparatus for ultrasonic assisted drying of materials, in particular, but not exclusively, for the low temperature drying of materials that are heat sensitive. In particular, there is provided an apparatus for dehydration of water containing material comprising: an ultrasound emitter; an ultrasound transmission platform that directly or indirectly supports said material; a fluid retained between said emitter and said platform, through which ultrasound energy is transferred; and a gas stream device that directs drying gas to said material. There is also provided a method of dehydration of water containing material comprising locating the material either directly or indirectly on an ultrasound transmission platform of a dehydration apparatus that comprises: an ultrasound emitter; a fluid retained between said emitter and said platform, through which ultrasound energy is transferred; and a gas stream device that directs drying gas to said material; and exposing said material to ultrasound energy and drying gas flow for a time and under conditions suitable to achieve desired extent of dehydration of said material. In another aspect there is provided a material that has been dehydrated using the method or apparatus described above.

A device for the heat treatment of a product includes an enclosure, a conveyor for transporting the product between an inlet of the enclosure and an outlet of the enclosure, which comprise a screw mounted in such a way as to rotate in the enclosure according to a geometric rotational axis, and a heater for heating the screw by Joule effect. The screw has an electrical resistance that varies along the geometric rotational axis.

A screw conveyor (90, 91, 92) for a drying apparatus (1) or a fermentation system is disclosed. The screw conveyor includes a helical element (11) having a longitudinal axis (x) and including a primary spiral (12) and a secondary spiral (13) mounted on the primary spiral and rotatable with respect to the primary spiral around the longitudinal axis; and a set of elongated members (20) spanning the primary and secondary spirals.

A drying system having a container, an air system, a sensor, and a control system. The control system is programmed to receive a measurement from the sensor and generate an air system instruction based on the measurement. The air system instruction corresponds with at least one of the temperature, flow rate, and/or pressure of airflow directed to the container by the air system. The air system adjusts the temperature, flow rate, and/or pressure of the airflow based on the air system instruction generated by the control system. A process for drying an agricultural product. A drying system having a floor with apertures that are sized and spaced so that a volumetric flow rate of the airflow through the apertures is between 75% to 100% of a maximum volumetric flow rate of the air system.

The present invention relates to an apparatus for treating mixed waste, for example, an apparatus for degrading bioplastic material in the mixed waste. The apparatus includes an electromagnetic wave emitter adapted to emit an electromagnetic wave on to the mixed waste; a movement inducing device adapted to move the mixed waste when the electromagnetic wave is being emitted onto the mixed waste such that the mixed waste is moved to increase the exposure of the mixed waste to the electromagnetic wave; and at least one of a heat emitter adapted to emit heat and a moisture emitter adapted to emit moisture onto the mixed waste. The present invention further relates to a method of treating mixed waste.

A process for torrefaction of biomass is provided in which biomass are passed into a fluidized bed reactor and heated to a predetermined temperature in an oxidizing environment. The dried biomass is then fed to a cooler where the temperature of the product is reduced to approximately 100 degrees Fahrenheit.

Methods and apparatus for drying harvested products using a mobile drying system are disclosed. According to some embodiments, a refractance window dryer is implemented on a mobile platform that includes two mobile units (e.g., trailers or transportable skid mounted assemblies) that may be transported to a remote location (e.g., at a harvest location). A first mobile unit may include a refractance window dryer module, and a second mobile unit may include utility equipment that supports operation of the refractance window dryer module.

A drying system (100) for agricultural produce (5) is disclosed, comprising heat emitting sources (3), placed over a continuous moving grain bed with uniform thickness and with a consistent PEG, so that the heat imparted are uniform over the agricultural produce (5) at any given passage point. The system (100) comprises conveyor belts (9), having passes (10) and each pass (10) is adapted to transit the agricultural produce. Heat emitting sources (3) are placed above each pass (10) of the conveyor belt (9), and the heat emitting source (3) is adapted to radiate heat onto the agricultural produce. The heat emitting sources (3) are strategically placed at uniform height over a flowing bed of agricultural produce (5) with controlled thickness to have a preset Produce to Emitter Gap (PEG), and are charged in controlled way to emit pre-determined intensity of radiation or pre-determined temperature setting to be imparted on the agricultural produce (5).

The present disclosure relates to a conveyor system (100) that provides a rigid flatbed which forms a continuous bed surface comprising tilt-able segmental trays (2) for two-pass capability. The conveyor system (100) is capable of utilizing the upper and lower run of the conveyor simultaneously for transportation of the material thereby reducing the area of the equipment of which the conveyor forms a part of. And the conveyor is rigid enough to support simultaneous processing of the produce it carries like drying, heating etc.