21results about "Wood particle drying" patented technology

The present invention relates to an apparatus and a method for continuously drying bulk goods, in particular wood fibers and / or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger (4) and are conducted to the dryer (1) again.

The present application relates to a mechanism and process method for reducing the particle emission of a belt pre-dryer, which comprises a flexible conveying assembly including a rotatingly arranged mesh belt and mesh holes penetrating through the mesh belt, and a layer of wet shavings to be dried is laid on the mesh belt; a flexible supporting assembly including a straightly arranged rigid guide rail, a rotatingly arranged flexible traction member, and a transversely connecting link arranged between the flexible traction members; the present application changes the fluctuating running state of the shavings layer into a steady parallel moving state, avoids the loose-dense-loose changes of the upper and lower layers of the shavings layer caused by the fluctuating running, reduces the phenomenon that the fine particles adsorbed and filtered by the upper layer of the shavings move and gather to the lower layer and the mesh belt caused by the fluctuating running, reduces the pressure difference between the upper and lower sides of the mesh belt caused by the gathering of the fine particles on the mesh belt, and improves the drying and filtering purification effect.

The application relates to the technical field of drying equipment, and particularly discloses a rot-resistant wood pellet dryer, which comprises an inclined drying cylinder and a driving mechanism for driving the rolling of the drying cylinder, one end of the drying cylinder is provided with a feeder, the other end of the drying cylinder is provided with a discharging mechanism, the inner wall of the drying cylinder is provided with a plurality of material lifting plates, a combustion chamber is arranged around the outer periphery of the drying cylinder, the combustion head of a burner extends into the combustion chamber, a heat shield is arranged above the combustion head to prevent the flame from directly contacting the drying cylinder; one end of the combustion chamber is connected with a waste heat return pipeline, and the other end of the waste heat return pipeline sends hot air into the drying cylinder. The combustion chamber is arranged around the outer periphery of the drying cylinder, so that the front end and the tail end of the drying cylinder can have relatively uniform temperature, thereby improving the drying efficiency and avoiding local high temperature.

A system (100) for biomass carbon dioxide sequestration comprising a harvesting module (120) for harvesting or collecting biomass; a drying module (150) to which biomass assessed to have moisture content greater than a threshold moisture content by weight is directed from the harvesting module (120) for drying said harvested biomass to a dry state where the dried harvested biomass has less than the threshold moisture content by weight; and a storage module (170) for storing harvested biomass assessed to have moisture content by weight less than the threshold moisture content.

A system and method for drying liquid or solid substances. The system comprises a drying apparatus for removing water from a substance to be dried by evaporation, a moisture collection system for absorbing the product moisture into a liquid absorbent, and a liquid absorbent drying apparatus for separating and discharging the absorbed product moisture from the liquid absorbent. The drying system is near-insulated because the temperature of the substance to be dried and the removed water are the same before and after the drying process, and the physical state of the removed water is the same before and after the drying process. The system further avoids the discharge of moist air from the enclosure of the drying apparatus.

The plant (1) for wood machining, comprises: - a plurality of user points (2) with a respective exhaust duct (3) of the fumes to be filtered (Fl); - at least one piece of equipment (4) comprising at least one hollow filtering chamber (5) defining at least one internal volume (5a) and comprising filtering means (7) of the fumes to be filtered (Fl) to obtain filtered fumes (F2) housed at least partly in the internal volume (5 a), the filtering chamber (5) being provided with: - one inlet port (8) and one outlet port (9) of woody material (M); - at least one introduction opening (6) of the fumes to be filtered (Fl) communicating with the exhaust ducts (3); - at least one evacuation opening (10) of the filtered fumes (F2) towards the outside; the fumes (Fl, F2) drying the woody material (M) in its passage the the inlet port (8) towards the outlet port (9).

The invention relates to a machine (1) for producing pellets, comprising a grinding unit (2) configured to grind biomass to produce ground biomass pieces, a drying unit (3) connected to the grinding unit by a device for conveying the ground biomass, the drying unit being configured to dry the ground biomass pieces for forming pellets, and a pressing unit (4) connected to the drying unit (3) by a device for conveying ground and dried biomass, the pressing unit (4) being configured to form pellets from the ground and dried biomass pieces, the machine (1) for producing pellets further comprising a movable support (6) on which the grinding unit (2), the drying unit (3) and the pressing unit (4) are mounted, the movable support (6) being dimensioned for road transport.

The application relates to the field of anti-corrosion wood drying equipment, and particularly discloses an anti-corrosion wood particle drying production line which comprises a pre-drying section, an anti-corrosion section and a post-drying section arranged in sequence; the pre-drying section and the post-drying section are both of the roller type drying equipment, the anti-corrosion section comprises a weighing mechanism for weighing wood particles and a spraying mechanism for spraying preservatives, so as to control the flow of the sprayed preservatives according to the flow of the wood particles entering the anti-corrosion section; the heat generated by the heat source mechanism of the pre-drying section is directly sent into the drying cylinder from the feeding end of the drying cylinder; the heat generated by the heat source mechanism of the post-drying section firstly heats the drying cylinder from the outside of the drying cylinder and then is sent into the drying cylinder from the feeding end of the drying cylinder; the wood particles discharged from the pre-drying section are sent to the post-drying section through the middle feeding mechanism, and the anti-corrosion section is arranged in the middle of the middle feeding mechanism. The production line is beneficial to reducing the transfer of wood particles and improving the drying automation degree while ensuring the drying efficiency.

A dryer for drying particles is provided that includes first and second circular plates mounted horizontally for rotation about an axis (Z), the surface of the plates being perforated and permeable to fluids, unit for blowing hot gas as a flow substantially parallel to the axis (Z) passing through the second plate before passing through the first plate, first and second units for distributing the particles and first and second units for recovering the particles after a rotation of each plate, a unit for transferring the harvested particles from the first plate (1a) to the second plate, a processor controlling the rotational speeds of the plates (ωa, ωb) and the supply flow rate (dma / dt) of particles on the basis of an output control loop. The output control loop being based a measurement of the final moisture content (H1b) of the particles measured in the second recovery unit.

The invention relates to a method for producing a lignocellulosic material (32), comprising the following steps: providing a cellulosic material (30); combusting the fuel (24) in the furnace (16), producing an exhaust gas (27); drying the fibrous material (30) in a dryer (28) with the exhaust gas (27), resulting in dried fibrous material (32) and steam (34); the steam (34) is discharged into the atmosphere (44), a portion of the steam (34) is refluxed into the furnace (16), and any volatile organic compounds contained in the refluxed steam (34) are combusted by measuring the total concentration (cVOC) of volatile organic compounds in the steam (34) and changing the refluxed portion (R) of the refluxed steam (34) as a function of the total concentration (cVOC).

A dryer system (1) comprising: a dryer (2) for products (P) to be dried, at least one gas inlet (3) and at least one gas outlet (4), which are connected to the dryer (2), wherein the dryer (2) has, between the gas inlet (3) and the gas outlet (4), a receiving device (5) designed for receiving the products (P) to be dried, and comprising at least one gas-extraction device (6), which is connected to the gas outlet (4) and is intended for extracting gas (G) and entrained particles (P) of the products (P), wherein at least one gas-extraction device (6) has a gas-particle separator (7) with a fan (8) for producing a gas flow (GS), which fan (8) is located in a flow path (9) running from the gas outlet (3) via the gas outlet (4) and through the gas-particle separator (7), wherein, in an operating state of the gas-extraction device (6), the flow path (9) in the gas-particle separator (7) has a first flow path (10), in particular a main flow path (10a), and a second flow path (11), in particular a secondary flow path (11a), in such a way that a smaller mass flow of the particles (P) is provided in the first flow path (10) than in the second flow path (11), wherein the gas-extraction device (6) has a first output (12), in particular a main output (12a), into which the first flow path (10) merges, and a second output (13), in particular a secondary output (13a), into which the second flow path (11) merges, wherein the second output (13) is connected to a filter system (14).

The invention relates to a method for storing and subsequently recovering electrical energy comprising the following steps: a) generating dust by means of an electrically driven device, b) storing the dust in a dust bunker, c) removing at least part of the dust from the dust bunker when electrical energy is needed, d) burning the dust to generate thermal energy, e) converting the thermal energy into electrical energy.

An apparatus for drying biomass may have a first drying stage and a second drying stage configured to receive biomass and to expose the biomass to combustion gases to reduce a moisture content in the biomass, the first drying stage and the second drying stage being sealed. A pneumatic drying circuit is in fluid communication with the first drying stage and at least a second drying stage, the pneumatic drying conveyor configured to sequentially direct biomass from the first drying stage to the second drying stage using a flow of drying gases, the pneumatic drying circuit including a drying gas source configured to provide the drying gases, the pneumatic drying circuit connecting the first drying stage and at least a second drying stage to the drying gas source in a parallel arrangement. An exhaust circuit is in fluid communication with the first drying stage and the second drying stage for exhausting moisture from the first drying stage and the second drying stage.

The invention relates to a method for storing and subsequently recovering electrical energy comprising the following steps: a) generating dust by means of an electrically driven device, b) storing the dust in a dust bunker, c) removing at least part of the dust from the dust bunker when electrical energy is needed, d) burning the dust to generate thermal energy, e) converting the thermal energy into electrical energy.

The present invention relates to an apparatus for drying bulk goods and a method for continuously drying bulk goods. In particular, the invention relates to an apparatus as well as a method for drying wood fibers.

[Problem] To provide a drying device and a drying method in which objects to be treated are conveyed by being slid over an open portion in a warm air atmosphere, and objects to be treated that are smaller than the open portion are passed through the open portion and classified while being continuously dried using a recovery section. [Solution] A drying device that dries objects to be treated using hot air, said device characterized by comprising a screw blade, an open portion that has an opening and that is disposed below the screw blade, and a recovery section positioned below the open portion, the rotation of the screw blade causing the objects to be treated to be conveyed by being slid over the open portion, and objects to be treated that are smaller than the opening being passed through the opening and classified by the recovery section.

A system and method for the drying of liquid or solid substances. The system comprises a dryer for the removal of water from the to be dried substance by evaporation, a moisture collection system for absorbing the product moisture into a liquid absorbent and a liquid absorbent dryer for separating and discharging the absorbed product moisture from the liquid absorbent. The drying system is near adiabatic, because the temperature of the to be dried substance and removed water are the same before and after the drying process, as is the physical state of the removed water before and after the drying process. The system further avoids the discharge of moist air from the enclosure of the dryer.

The invention relates to a method for storing and subsequently recovering electrical energy comprising the following steps: a) generating dust by means of an electrically driven device, b) storing the dust in a dust bunker, c) removing at least part of the dust from the dust bunker when electrical energy is needed, d) burning the dust to generate thermal energy, e) converting the thermal energy into electrical energy.

[Problem] Provided is a drying device and a drying method that convey a material to be processed by sliding it over an opening portion under a warm air atmosphere, and thus, the material to be processed smaller than an opening is caused to pass through the opening and is classified while being continuously dried by a collecting portion. [Solution] A drying device dries a material to be processed by warm air. The drying device includes: a screw blade; an opening portion that is arranged below the screw blade and has an opening; and a collecting portion arranged below the opening portion. Rotation of the screw blade conveys the material to be processed by sliding the material to be processed over the opening portion, and the material to be processed smaller than the opening is caused to pass through the opening and is classified by the collecting portion.

Construction for drying material, such as grain, rapeseed or beans, or for drying other light material, such as compost, wood chips, sawdust, pellets, paper mill by-products, hay or semi-dry mud, or root vegetables, such as potatoes, carrots or onions, preferably in an agricultural and / or paper mill or sawmill environment, comprising: - at least two, preferably four, locking plates (10) providing fastening means, suitable for being locked by a rotational movement of about 45 to about 90 degrees, - a foldable metal plate (11) suitable for providing two side parts and a lower part which, when folded, appear from the inlet side as a ‘U’ with angles of substantially 90 degrees, thereby creating a channel for conveying the material, suitable for being fixed using the locking plates; two inlet plates (12), preferably already folded at an angle of about 45 degrees, suitable for being fixed to the ‘U’ folded metal plate, thereby creating an inlet for the material; at least four inlet fastening means (13) suitable for being locked to the metal plate by a rotation of about 45 to about 90 degrees to secure the inlet plates; further comprising a cover (16) thereby providing a closed drying and / or conveying structure, forming a square when viewed from the inlet side.and also a foldable end part (14).