The present invention proposes a drying tower with grain flow in parallel and sinuous in combination with reverse and radial crossed air flows in form of Z oblique for the implementation in the drying of grains, seeds, fodder, and fruit. Therefore, the grains are firstly submitted to a first stage of parallel grains flow and reverse crossed air flow in order to standardize the different degrees of humidity of the grains and of their impurities. In a second moment, these grains are submitted to a sinuous grains flow and radial air flow in the form of oblique Z. Such implementation in drying processes of grains upgrades substantially the drying time and the energy spent for such process, generating in this way profit for the food industries.

A device for drying grain includes a housing having an inlet port and an outlet port, a first passageway, a second passageway, a grain flow housing, a filter across the grain flow housing, a recovery column, an air supply, a recycle column, a filter cleaner in the recovery column, and a conveyor for moving the filter cleaner along the filter. The air supply pulls an air flow into the housing through the inlet port as a grain flow pours through the grain flow housing. The air flow passes through the grain flow in a first pass air flow from the passageways to dry the grain. The first pass air flow passes through the filter to remove particles, and a portion of that filtered first pass air flow is recycled back with the filter cleaner to dislodge particles clogging the filter. The other portion is vented through the outlet port.

A process and plant for drying of wood shavings, wood chips or other solid materials of organic and/or mineral origin in small pieces, in whichthe material is predried by means of a first preheated drying gas in a first drying step,the dried material from the first drying step is dried by means of a second preheated drying gas in a second drying step,ambient air is heated and supplied as second preheated drying gas to the second drying step,the dried material from the second drying step is cooled by means of a cooling gas, andthe cooling gas heated by cooling of the material and/or the second drying gas cooled in the second drying step is supplied as first drying gas to the first drying step.

MULTIPLE INTERMITTENCE BEEHIVE GRAIN DRYER, refers to a dryer of seeds and other agricultural products that can be a constructive format honeycomb type dryer designed to provide a unprecedented process of multiple intermittence during fast, gentle, non-aggressive drying process of grains and seeds through complete and safe removal of accumulated moisture, being divided into the following stages: drying-resting-drying-resting-drying, and so on until drying is complete. Exposure time to drying air is monitored and allows recirculation of humid air, it also allows batch or continuous drying with a thermally insulated plenum that removes dirty humid air located in the bottom section, without releasing it directly into the environment, with advantages of low production cost, dry grain of much higher quality, better energy efficiency, environmentally friendly and capable of virtually eliminating any accidental risks.

A grain dryer has a grain column configured to receive grain to be dried and ducts extending from a first wall of the grain column to a second wall of the grain column. The grain dryer is configured so that different numbers of the ducts are selectable for handling cooling air used for cooling the grain.

A vacuum drying apparatus has a rigid bin structure within a flexible membrane liner arranged to store particulate material therein. An exhaust passage and air inlet passage communicate through the envelope in sealed relationship with the envelope. The air inlet passage is adjustably flow restricted relative to the exhaust passage so as to enable a flow through material in the liner when applying vacuum pressure to the exhaust passage, for example using a centrifugal fan. The air inlet passage communicating with an upper manifold within the upper portion of the bin structure and the exhaust passage communicating with a lower manifold within a lower portion of the bin structure.

A system and method for at least partially drying seeds treated with a liquid. A supply of heated air is continuously fed to a drying chamber. Treated seeds enter one opening of the drying chamber and are forced around at least a portion of the internal perimeter of the drying chamber before exiting out a second opening. Another embodiment can treat the seeds during and/or after the seeds entering the drying chamber.

A grain dryer has a grain column configured to receive grain to be dried and ducts extending from a first wall of the grain column to a second wall of the grain column. The grain dryer is configured so that different numbers of the ducts are selectable for handling cooling air used for cooling the grain.

A method and device for drying wood chips to be used as raw material for a gas-generating reactor, the device being disposed between the storage for wood chips and the reactor. Product gas of the reactor is at least partially used in a block-type thermal power station (BHKW), and hot air from the housing of the block-type thermal power station is used to heat and dry wood chips in a drying hopper which has at least one outlet for the cooled humidified air. The wood chips enter the drying hopper through a first air-tight lock and exit the drying hopper through a second air-tight lock.

A plurality of screenless panels for a grain dryer having a plurality of cut outs to receive forced heated air from a heating system. The panels have a plurality of deflectors attached above the cut outs of the panels such that debris and grain fines is prevented from obstructing airflow. The deflectors have a connecting section and a deflecting section that is bent away from the connecting section along a bend line. The deflectors are connected to the panels by bolts placed through aligned apertures in the panels and deflectors.