A heating apparatus for supplying heated air to a dryer for grain or other particulate materials. The apparatus features a biomass furnace with a burn chamber for combustible biomass material, a chimney having a lower end in fluid communication with the burn chamber interior, and air ducting that has a fresh air inlet, an output end connected or connectable to the dryer, and is in in fluid communication with the chimney to enable redirection of said heated exhaust air from the chimney to the dryer via the air ducting. An airflow control system is configured to both control airflow to the dryer through the air ducting, and control a temperature of said airflow by varying a ratio between the fresh ambient air and the heated exhaust air.

A process for drying polymeric granular material (2) comprises the steps of: —introducing into said drying hopper (10) a process gas having a predefined flow rate so as to heat and dry the polymeric granular material, —discharging a portion of the heated polymeric granular material into a transformation unit (100) for the polymeric material; —loading an amount of fresh polymeric granular material (2a) into the drying hopper. The process gas flow rate is regulated by measuring the inlet temperature of the fresh polymeric granular material (2a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.

The present invention provides grain-drying facilities which can effectively use the heat energy of biomass combustion hot-air that has been generated in a biomass combustion furnace. The grain-drying facilities 1 include: a biomass combustion furnace 3 provided with a heat exchanger 24 for generating a hot air from a combustion heat of a biomass fuel and an outside air which has been taken in from the outside; and a circulation type grain-drying apparatus 2 provided with a grain-drying portion 7 to which the hot air that has been generated in the biomass combustion furnace 3 is supplied through a pipe 15 for supplying a hot air, wherein the circulation type grain-drying apparatus 2 has a plurality of warming pipes 6a in the grain-drying portion 7, and an exhaust hot-air is supplied to the warming pipes 6a from the biomass combustion furnace 3 through a pipe 11 for supplying the exhaust hot-air.

A heating apparatus for supplying heated air to a dryer for grain or other particulate materials. The apparatus features a biomass furnace with a burn chamber for combustible biomass material, a chimney having a lower end in fluid communication with the burn chamber interior, and air ducting that has a fresh air inlet, an output end connected or connectable to the dryer, and is in in fluid communication with the chimney to enable redirection of said heated exhaust air from the chimney to the dryer via the air ducting. An airflow control system is configured to both control airflow to the dryer through the air ducting, and control a temperature of said airflow by varying a ratio between the fresh ambient air and the heated exhaust air.

The invention relates to a diffuser guide construction for evening the flow of bulk material in a bulk material container, wherein the diffuser guide construction is formed by at least one central tube which is either open at the top and tapers upwards or is closed at the top. The invention also relates to a bulk material container comprising such a diffuser guide construction and the use of a diffuser guide construction for evening a flow of bulk material.

A process for drying polymeric granular material (2) comprises the steps of: introducing into said drying hopper (10) a process gas having a predefined flow rate so as to heat and dry the polymeric granular material, discharging a portion of the heated polymeric granular material into a transformation unit (100) for the polymeric material; loading an amount of fresh polymeric granular material (2a) into the drying hopper. The process gas flow rate is regulated by measuring the inlet temperature of the fresh polymeric granular material (2a) and comparing it with a predefined inlet temperature of the fresh polymeric granular material, on the basis of which the predefined process gas flow rate has been calculated. If the measured inlet temperature is different from the predefined inlet temperature, the flow rate of the process gas is regulated on the basis of the measured inlet temperature.

The invention relates to an apparatus for the treatment of spent material said treatment including the desolventisation and toasting of said spent material (DT) to yield desolventized spent material and/or the drying and cooling of said desolventized spent material (DC) to yield meal and/or their combination (DTDC), said apparatus being made of stacked trays supporting said spend material said apparatus being equipped with means to provide at least one fluid phase going through said spent material, wherein at least a portion of the said at least one fluid phase is pulsed through said spent material.

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 process for ore moisture removal by exposure of the ore to a hot and dry air stream is described. Also described is a conveyor belt and a transfer chute adapted for the use of the above process. Among other aspects, the process has the function of reducing moisture in ores prior to the shipping stage of this material.

A process for ore moisture removal by exposure of the ore to a hot and dry air stream is described. Also described is a conveyor belt and a transfer chute adapted for the use of the above process. Among other aspects, the process has the function of reducing moisture in ores prior to the shipping stage of this material.