A biosolids treatment system that treats human biosolids to produce thermal energy for self-consumption for the production of beneficial use products including low carbon ash, high carbon activated biochar, and Class A biosolids. The system includes a variable feed conveyor that conveys a biosolid feed into a dryer; a dryer that dries the biosolid feed to a predetermined moisture content to create one of a beneficial use products, where the predetermined moisture content is controlled by varying the speed of variable feed conveyors and a variable feed mixer; and a gasifier that converts the biosolid feed into two of the beneficial use products.

In a system for performing a multi-step process for selectively purifying various pharmacologically-relevant components of a source plant such as cannabis, an initial step of the process provides a low-temperature, robust process for dehydrating and decarboxylating the starting productfresh raw cannabisby means of a vacuum-assisted microwave distillation process. An important by-product of the dehydration/decarboxylation is a terpene-rich distillate. By doing the terpene capture under vacuum, distillation temperature may be kept low. The low distillation temperature maximizes yields of thermally-sensitive components such as terpenes and cannabinoids.

Systems and methods of grain drying using radio frequency waves while maintaining low temperature are disclosed herein. Specifically, the system and method includes minimizing temperature increases caused by dielectric radio frequency heating while increasing intermolecular hydrogen bond disruption. Further disclosed herein are devices systems and methods for removing moisture from a material via radio frequency electromagnetic wave exposure.

Waste heat is extracted in two stages from the exhaust (20) of a biomass dryer (14) in a grain alcohol plant (10). A boiler circuit (56) provides a first steam at high pressure. A first energy recovery circuit (36) extracts heat from the exhaust via a non-contact heat exchanger (24) and provides a second, relatively lower pressure steam (78), thereby bypassing a portion of the boiler circuit. Working fluids in the boiler and first energy recovery circuits are maintained within boiler water quality specifications and are intermixed to allow the production of the second steam without a pressure reduction device. A second energy recovery circuit (44) extracts heat from the exhaust downstream of the first energy recovery circuit using a direct contact heat exchanger (38) and provides a non-boiler quality heated fluid (52), which may be a heated liquid or a third steam.

An apparatus for drying bulk material can include a housing defining a chamber, an inlet for receiving the bulk material into the chamber, and an outlet for discharging the bulk material from the chamber. At least one conveyor mechanism can be disposed within the housing and can be arranged to convey the bulk material from the inlet to the outlet. A ventilation system can be coupled to the chamber and configured to remove water vapor from the chamber. A method of drying bulk material can include receiving the bulk material into a chamber, conveying the bulk material within the chamber, removing water vapor from the chamber, and discharging the bulk material from the chamber. The system can be used to process peat moss or other bulk materials, such as soil, manure, wood pulp, vegetables, or other products.

A system and method for drying and utilizing spent grain includes an agitation device having an elongated semi-cylindrical mixing chamber with a motor-driven shaft and a plurality of agitators. A lid is hingedly positioned along the top end of the chamber and is connected to the dehumidification system by a pair of air ducts. An air filtration device is interposed between the air output of the agitation device and the air input of the dehumidification system. A method of drying spent grain includes the steps of pouring spent grain into the interior space of the chamber, securing the lid in the closed position, agitating the grain inside the chamber via the agitators, removing damp air from the interior space of the chamber, and introducing dry warm air to the interior space of the chamber until a moisture content of the spent grain achieves a user specified level.

The present disclosure relates to environmentally-clean thermal drying systems and methods. In accordance with one aspect, a method for thermal drying includes receiving a grease-related waste, burning the grease-related waste in a furnace to generate heat energy, receiving a bio-waste in an indirect dryer at an adjustable feed rate, drying the bio-waste in the indirect dryer using at least some of the heat energy, and metering the bio-waste into the indirect dryer at the adjustable feed rate. The adjustable feed rate is adjusted based on a percentage of solids of the bio-waste before entering the indirect dryer and a temperature within the indirect dryer, where the indirect dryer and the adjustable feed rate are coordinated to achieve a predetermined percentage of solids in a dried bio-waste exiting the indirect dryer.

A fermentation residue conditioner for conditioning aggregate materials consisting of fermentation residue, sludge, both of which having high water content, and/or organic residual masses with low water content, particularly of fermentation residues from the fermentation of household waste, bio-waste and/or base materials containing food residues, having a fermentation residue dropping point for introducing the aggregate material and a fermentation residue removal point for removing the aggregate material. The fermentation residue conditioner is designed such that the aggregate material is transportable through the fermentation residue conditioner during conditioning. The fermentation residue conditioner has a deposit surface for supporting the aggregate material from the underside, and wherein the aggregate material can be transported through the conditioner by a conveyor chain.

A bale dryer including a support frame, at least one air intake manifold movably coupled to the support frame for supplying heated air, a bale retainer coupled to the support frame and configured for retaining at least one bale in a fixed position vertically spaced from the at least one air intake manifold, and an actuator coupled to the at least one air intake manifold and configured to move the at least one air intake manifold between a retracted positon and an extended positon.

A vegetation tray includes a base. The base is formed from a thin wall having a plurality of spaced peaks and valleys. A plurality of apertures are in the base. The apertures enables passage of air for drying vegetation on the tray. A boundary wall extending from the base.