93results about "Wood particle drying" patented technology

Equipment for producing granules from a ligneous material includes a unit (LPGcont) for the continuous production of agglomerated plant particles, a unit (GAC) for the production of hot air from plants, the hot air being used for the production of the agglomerated particles, and also at least one mobile load-bearing structure to which the two production units are attached.

A dryer dries particles, wherein the dryer comprises two circular decks mounted substantially horizontally and rotating in opposite directions relative to one another about a same vertical axis, Z, the surface of said decks being perforated and permeable to air, steam and water, a means for blowing hot gas in a flow substantially parallel to the axis Z, passing through the second deck before passing through the first deck, means for distributing said particles to be dried on the first and second decks and means for recovering the particles after a rotation of each deck, and a means for transferring the particles collected from the first deck by the recovery means to a second distribution means suitable for distributing said particles along a radius of the second deck.

A method for drying bulk goods, in particular wood fibers and / or wood chips, wherein the bulk goods is continuously dried in a dryer (1), in particular a drum dryer. The vapor-gas mixture flows through the drum dryer (1) in a dryer circuit and is indirectly heated via at least one heat exchanger (4) by a burner waste gas that is heated in at least one burner (5). The drying vapors are supplied to the at least one heat exchanger (4). Upstream, downstream and / or within the at least one heat exchanger (4), at least a partial flow of the drying vapors are branched off to be conducted into the burner (5). The remaining partial flow is conducted to the dryer (1) again. The partial flow of drying vapors to the burner (5) is driven by at least one regulable partial vapor fan (10).

The invention provides a secondary drying device of sawdust. The secondary drying device comprises a drying box, a hot air inflow pipe, a hot air outflow pipe and a hot air generator. A horizontally-arranged partition is arranged in the drying box, the interior of the drying box is divided into a primary drying chamber and a secondary drying chamber which are vertically arranged by the partition,a quantitative discharge port communicating with the primary drying chamber and the secondary drying chamber is formed in the partition, and a quantitative discharge part capable of blocking the quantitative discharge port is arranged in the primary drying chamber. Multiple preheating pipes are arranged in the primary drying chamber at intervals in the vertical direction. A drying barrel is arranged in the secondary drying chamber, the central axis of the drying barrel is horizontally arranged, a feed pipe communicating with the quantitative discharge port is arranged at the top end of the drying barrel, and a discharge pipe stretching out of the drying box is arranged at the bottom end of the drying barrel. One end of the hot air inflow pipe penetrates through an outer shell and an innershell and stretches into the drying barrel, the other end of the hot air inflow pipe is connected with the hot air generator, one end of the hot air outflow pipe stretches into the drying barrel, andthe other end of the hot air outflow pipe stretches into a second air chamber. The drying speed is high, the one-time drying amount is large, and the large-scale production requirements can be met.

A method and apparatus for heating materials is described. The apparatus is a furnace that includes multiple gravity-feed trays and a heat transfer fluid that heats material by the heat evolved during phase change. The apparatus also includes moving paddles that urge the material through each tray. The method provides for the torrefying of the material using a phase-change heat-transfer fluid by providing the material sequentially to at least two trays, where the at least two trays are substantially horizontal and disposed at different vertical heights; condensing the vapor phase at a temperature; and providing heat from the condensing the vapor phase to the material, where the temperature is sufficient to torrefy the material.