90results about "Wood particle drying" patented technology

Embodiments presented herein describe an apparatus and method to control the conversion of carbonaceous materials, particularly biomass and those biomass resources, into a high performance solid fuel. This method, and the apparatus described as the means to accomplish this method, provides a process having a control system that enables the system to produce a fuel of uniform quality, even with a change in biomass supply.

Provided is an indirectly heating rotary dryer which has achieved enhanced energy-saving performance by reducing heating tubes non-contacting with material to be dried and reducing power required for rotation even when a hold up ratio is increased.

Specifically provided is an indirectly heating rotary dryer having four partition walls extended respectively along a shaft center in an inner space of a rotating shell at angle intervals of 90 degrees in the vertical and horizontal directions. The four partition walls partition the inner space of the rotating shell at a lateral section of the rotating shell into four approximately-sector-shaped small spaces respectively extended along the shaft center. Heating tubes are aligned in the rotating shell in three lines extended respectively in parallel to the shaft center of the rotating shell. The heat tubes heat and dry the material to be dried by supplying heated steam to the heating tubes and performing heat exchange with the material to be dried in the rotating shell.

A wood material drying plant including a heater for generating a hot drying gas, a rotary dryer for bringing the hot drying gas into contact with the wood material to be dried, a wood particle separating unit being operative for separating entrained wood particles from the spent drying gas, and a gas cleaning system for removing pollutants from the spent drying gas. The wood material drying plant is provided with a heating gas duct which is operative for forwarding a gas portion to a mixing position located between the rotating drum of the rotary dryer and the wood particle separating unit, said gas portion having a higher temperature than the spent drying gas, and for mixing said gas portion with said spent drying gas, such that the temperature of the spent drying gas is increased.

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.

An integrated boiler-dryer consisting in a sealable vessel capable of sustaining high humidity and variable gas pressures and into which is placed a lignocellulosic material, and a compound in mist form. The sealable vessel provides dry heat so as to dry the lignocellulosic material while the compound is impregnated within the lignocellulosic material.

The invention relates to an apparatus (1) for dewatering wood material (2). The apparatus (1) comprises a first roll (3) and a second roll (4) that form a nip (N₁) in which water can be pressed out of the wood chips (2). An endless permeable conveyor (5) is arranged to pass through the nip (N₁) and carry wood chips (2) through the (N₁). The invention also relates to a method of dewatering wood material in which the inventive apparatus is used.

A device and process for heating wood for the purpose of eradicating burrowed pests such as gypsy moths and emerald ash borer beetles are disclosed. The device is used for treating firewood and pallets made of wood to insure that burrowed pests are killed before transporting the wood across state lines in following of state regulations. The device comprises a conveyor adapted for transporting firewood or pallets an insulated and heated chamber. The wood core temperature of the wood is monitored using wireless temperature sensors. Conveyor speed is adjusted according to temperature readings in order to achieve a threshold wood core temperature and in order to maintain the threshold wood core temperature for the minimum required period of time.

The invention discloses a device and method for processing wood chips of a furniture factory. The processing device includes a bracket and a support leg, wherein a crushing box is fixedly arranged onan upper end surface of the bracket; a feeding hopper is riveted on the upper end surface of the crushing box; a plug rod is movably disposed on the inner wall of the feeding hopper by a hinged part;a handle is welded to the upper end of the plug rod; the bottom of the feeding hopper is provided with a first feed port; a first rotating shaft is rotatably disposed at the internal middle position of the crushing box; and a group of crushing rollers are evenly distributed outside the first rotating shaft. The device and method for processing wood chips of a furniture factory according to the present invention are fine in design and convenient to operate, integrate the crushing, conveying, drying, compressing and wrapping processes of the wood chips to form a mechanized production line, reduce production costs, improve work efficiency, facilitate truck transportation, have an effect of use better than that of a traditional method, are suitable for different working conditions and bring better prospects for use.

The invention relates to the technical field of wood chip drying, in particular to a novel wood chip dryer. The novel wood chip dryer comprises a roller with an insulation effect, a left end cover for covering the left end part of the roller, a right end cover for covering the right end part of the roller, and a rotating mechanism for driving rotation of the roller. The novel wood chip dryer further comprises a circular heating device; the circular heating device includes a heat guide pipe arranged in the roller, and a heating device connected with two ends of the heat guide pipe; a circulating loop is formed between the heating device and the heat guide pipe; a heat conducting medium is filled in the circulating loop; and a circulating electric pump is arranged on the circulating loop for driving the heat conducting medium to circularly flow in the circulating loop. The dryer has the advantages of uniform drying temperature, controllable drying temperature, uniform wood chip mass, fast drying speed, less powder after drying, high heat utilization rate, energy conservation, environmental protection, safety and controllability.

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.

The invention relates to the technical field of furniture processing, in particular to waste wood treatment equipment for processing solid wood furniture. According to the equipment, waste wood is primarily crushed through a coarse crushing mechanism, through rotation of a dual-direction thread rod, a first crushing plate and a second crushing plate move oppositely, the coarsely-crushed wood is crushed secondarily, and the crushing efficiency is improved. A screening layer is arranged below a fine crushing mechanism and provided with a screening plate, when the diameter of the crushed wood issmaller than that of a through hole of the screening plate, the wood can fall down, otherwise, the wood is repeatedly cut by the fine crushing mechanism until the wood can pass through the screening plate, the diameter of the crushed wood is controlled, it is guaranteed that the wood can be recycled, and the operation of reprocessing is omitted. The saw dust of the wood meeting the recycling condition falls on a drying layer through the screening plate, heating lamps of the drying layer irradiate and heat the saw dust of the wood, so that the saw dust of the wood is sufficiently dried, it is guaranteed that the discharged saw dust of the wood can be directly recycled, and the re-drying process is not needed.

The invention relates to a dryer for drying fuel materials such as wood bark, wood chips, sludge, garbage, peat moss or the like. In a preferred embodiment the dryer comprises a conveyor, consisting of twin endless belts, which carries the material to be dried along a vertical path defined between parallel runs of the endless belts, and ductwork which serves to direct heated air (received from any appropriate source) across the vertical path to remove moisture from the material as it is being conveyed. The ductwork includes at least one feed duct for use in delivering the heated air to one side of the vertical path, and at least one exhaust duct for use in withdrawing moisture-laden air on another side of the vertical path. Suction is applied at the exhaust ducts to draw drying air through the ductwork, and the feed and exhaust ducts are made to seal against the conveyor to reduce the introduction of ambient air into the dryer ductwork under the suction applied.

Screw connection, in particular, a tension clamp, and method of forming the screw connection. The screw connection includes a screw having a screw head and an external thread with a thread turn profile and a thread axis, and a mating thread element having an internal thread, matched to the external thread, with at least one thread groove bordered by thread flanks to screwably receive the screw. A geometrically defined deformation of the external thread is arranged at a predetermined distance from the screw head to collide with at least one thread flank during the screwing of the screw into the mating thread element.

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.

The present disclosure relates to a facility for forming a wood plastic composite by mixing and extruding wood powder and a polymer resin. According to a facility of the present disclosure, in a process of forming a wood plastic composite, gas and water vapor contained in wood powder and polymer resin are efficiently removed, and thus, a coupling force between wood powder and polymer resin increases, and also, wood powder is uniformly dispersed inside polymer resin, and thus, physical properties of a wood plastic composite to be formed is not degraded, and in addition, since there is no stagnant section while molten liquid of wood powder and polymer resin passes through each apparatus in the facility, wood powder is prevented from carbonizing or polymer resin is prevented from solidifying, and thus, physical properties of the wood plastic composite to be formed are maintained constant.

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.

The invention relates to a sawdust roasting device, which is characterized in that the roasting device body (1) is a rectangular square, and the bottom plate (14) of the roasting device body (1) is provided with an ash bin (8) and a bottom bin (17) layer; the upper part of the ash bin (8) and the bottom bin (17) layer is a burning and baking layer, and the burning and baking layer in the baking device body (1) is provided with a shell (18) and a second layer (19) And the double jacket formed by the third layer plate (20) and the inner layer plate (21), a kind of sawdust baking device of the present invention, fully utilizes heat energy, is provided with double jacket to utilize heat in the combustion furnace, divides into two times The raw material is heated to remove moisture; the thermal efficiency is high and the fuel is saved.

The invention discloses an efficient wood shaving drying device. The efficient wood shaving drying device comprises a drying chamber, a conveyor, an infrared electric heating plate, drying and conveying belts, a plurality of first air blowers, a second air blower, a feeding conveying belt, a recovery conveying belt, first air outlets and a motor. A thermal-insulation layer and the infrared electric heating plate are arranged on the inner wall of the drying chamber. A feed inlet is formed in the left upper portion of the drying chamber. The drying and conveying belts are driven by the motor to horizontally move. The second air blower is located on the right side of the discharge ends of the drying and conveying belts. The feeding conveying belt is arranged below the drying and conveying belts, and the recovery conveying belt is arranged on the right lower side of the feeding conveying belt. A recovery box communicates with a storage bin. The storage bin communicates with a feeding hopper through the conveyor. The first air blowers and the first air outlets are arranged in the drying chamber so that insufficiently-dried wood shavings can be sorted out to be automatically and cyclically dried, subsequent molded pallet production and machining are facilitated, the quality of pallets is guaranteed, and the production efficiency is improved.