Abstract: Textile fibers of different lengths are fractionated in a liquid medium at a predetermined consistency into at least two fractions on the grounds of the fiber length, the two fractions being a first accept and a second accept. The second accept, which has longer fibers than the first accept, is led to a refining step in the liquid medium, and the refined fibers are fractionated in the liquid medium into at least two fractions on the grounds of the fiber length.

Abstract: The clamping device includes a flexible member extending approximately according to an arc of circumference open at the bottom at a supporting and sliding surface of the logs to be cut. Actuator members are further provided for clamping and releasing the flexible member around the logs to be cut which advance along the feed path through the arc of circumference defined by the flexible member. The actuator members include a first tensioning and release device of the flexible member and a second tensioning and release device of the flexible member. The first tensioning and release device and the second tensioning and release device are adapted to engage two ends of the flexible member, and to increase and reduce the radius of the arc of circumference defined by the flexible member, which extends between the first tensioning and release device and the second tensioning and release device.

Abstract: The system includes a packing machine and one or more video cameras to detect the quality of packs of tissue paper products, and/or of the wrapping sheet used for wrapping the packs. A control unit is provided to manage the detected images and, if necessary, to compare them with reference images.

Abstract: A method for continuous steam explosion discharge of a pressurised reactor for thermal treatment of lignocellulose biomasses. The steam explosion discharge is complete decoupled from the thermal treatment step and the loss of steam from the process is fully controlled without jeopardizing the mechanical disintegration of the lignocellulose material from the process.

Abstract: The embosser includes two load-bearing structures that are mutually movable to approach and move away from each other. The first load-bearing structure supports a plurality of first embossing rollers that can be selectively brought to an operating position, in which they cooperate with a first pressure roller. The second load-bearing structure supports one or more second embossing rollers cooperating with a second pressure roller. The two support structures can be moved away from each other to allow the selection movement of the first embossing rollers.

Abstract: The device includes a fixed counter-blade and a rotating blade-holder on which a set of rotating blades is arranged. A web material which must be perforated or cut into sheets passes between blade-holder and counter-blade. A mutual contact sensor and an angular position sensor provide signals that allow correct positioning and functioning of the rotating blades and the counter-blade to be displayed on a human-machine interface.

Abstract: A pressure screen for use in a fiber web product process (10) has an inlet zone (12), a basket having an accept zone (14) and a reject zone (20). The pressure screen (10) has a housing (28) inside which a rotor (27) is located. The reject zone (20) of the pressure screen (10) has a cover (22) forming a rejects chamber (21) for the reject zone (20). The cover (22) of the rejects chamber (21) of the screen (10) is removable by a reopenable attachment means (25, 29) attached to the housing (28) of the screen (10).

Abstract: A machine (1) for producing packages of napkins, tissues, towels, or similar products, comprises a support frame (100) to support a feeding group (10) which feeds a first and a second web of paper (5a, 5b). The support frame (100) supports, furthermore, a cutting group (20) which cuts the first and second webs of paper (5a, 5b) respectively in a first and a second plurality of sheets (6) of predetermined length, and a folding or interfolding group (30) which folds or interfolds the sheets of paper (6) at a folding or interfolding zone, (35) in such a way to obtain a stack (150) of folded or interfolded sheets, according to a predetermined folding or interfolding configuration. The cutting group (20) and the folding or interfolding group (30) are mounted on the same support body (110) to move between an assembled position in which is supported by the support frame (100), and a disassembled position, in which is not supported by the support frame (100).

Abstract: The invention relates to a method for producing an oil rich fraction (OF) from primary feedstock (FS) that comprises water, first salt, second salt, and biomass. The feedstock (FS) is provided to a first reaction zone (Z1) of a conversion reactor (100), where it is allowed to react at a temperature of at least 350° C. in a pressure of at least 160 bar to form converted primary feedstock. The method comprises separating from the converted primary feedstock a first salt rich fraction (SF1), a second salt rich fraction (SF2), and an oil rich fraction (OF). The method comprises withdrawing the oil rich fraction (OF) from the first reaction zone (Z1) and withdrawing the first salt rich fraction (SF1) and the second salt rich fraction (SF2) from the conversion reactor (100).

Abstract: At least one infrared element arrangement having at least one infrared element (3) comprising a plurality of infrared radiators (4) is mounted on a frame moveable with respect to a synthetic filter fabric mounted to a filtering surface. The frame may have wheels or the like such that the infrared radiators may be moved along the length of the filtering surface to heat the synthetic filter fabric (6) to a temperature of 100 to 160° C. for shrinking the fabric (6) on the filtering surface (5).

Abstract: Disclosed is a (safety) controller for a battery management system, a system and a method. The controller is arranged to provide control signals, receive an enable signal, receive a reset signal, and in response to the enable signal missing, perform a shutdown for the controller, and, based on the reset signal, cause a switch to be maintained in a closed position for connecting a battery to a load during the shutdown.

Abstract: An accessory is provided for a disc refiner that is for refining lignocellulosic material and includes at least two refiner discs, at least one of which is a rotor refiner disc, a motor, and a rotation shaft assembly that includes (i) a rotation shaft, (ii) a shaft housing, (iii) at least one bearing between the shaft housing and the rotation shaft for allowing rotation of the rotation shaft within the shaft housing, and (iv) at least one ring-shaped locknut that encircles the rotation shaft, is configured for holding the at least one bearing in place on the rotation shaft, and includes notches for a tool to grip when attaching the locknut in the rotation shaft assembly. The accessory is configured to be attached to the locknut and includes at least one covering part configured to at least partly cover the notches of the locknut when attached to the locknut.

Abstract: A spray nozzle includes a first flow channel providing a flow path between a first inlet and a first outlet, and a second flow channel providing a flow path between a second inlet and a second outlet surrounding the first outlet. The first flow channel is delimited by an inner casing and the second flow channel is delimited by an outer casing. In order to achieve an optimized level of uniformity of moisturizing fluid spray, the first outlet includes a plurality of first outlet openings, wherein the first outlet openings are separated by first slats extending helically at least a part of the distance between the first inlet and the first outlet.

Abstract: A method for controlling a chemical recovery boiler. The method includes measuring concentrations of sodium carbonate, sodium sulfide, and sodium sulfate from green liquor of the chemical recovery boiler, determining a target temperature for smelt, imaging at least an area of a char bed of the chemical recovery boiler, the area being close to a smelt spout, to obtain an image of the area, determining a measured temperature of the char bed using the image of the area. The method further includes determining that the measured temperature of the char bed is less than the target temperature for smelt, and controlling the chemical recovery boiler such that the temperature of the char bed increases. A chemical recovery boiler for the same.

Abstract: The invention relates to a method and system for improving the application of a coating on a Yankee cylinder (CR) in tissue paper machines. The invention implements a moisture-controlled environment (12) in an area of the exposed Yankee cylinder between the take-off position (TO) and ahead of the transfer position (TP) of the web, i.e. before and/or after the application of a coating with Performance Enhancing Material (PEM), wherein the cooling effect on the Yankee surface is increased by increased evaporation rate of water in the coating or water additionally applied onto the coating.

Abstract: A system for treatment of a biomass material and a method for transporting biomass material, said system comprising: —a first vessel (3) in which said biomass material is treated at a first pressure;—a second vessel (5) in which said biomass material is collected at a second pressure which is lower than the first pressure; and—a transporting pipe (7) connecting an outlet (9) of the first vessel (3) with an inlet (11) of the second vessel (5) for transporting the biomass material from the first vessel to the second vessel, wherein said transporting pipe (7) comprises at least one restriction (13) for control of the flow in the transporting pipe and hereby providing a pressure drop to the transported biomass material, wherein at least one of said at least one restriction (13) is provided somewhere in the second half of the length of the transporting pipe (7) starting from the first vessel (3) and ending at the second vessel (5).

Abstract: The embossing device includes—a first path for a first ply of web material; —along the first path, a first embossing roller provided with embossing protrusions; —a first heating device associated with the first embossing roller to heat the surface of the first embossing roller; —at least a first functional roller adapted to perform an action on a ply of web material. The first functional roller is provided with a rotation arrangement, adapted to keep the first functional roller in rotation during a temporary stoppage of the embossing device, with the first functional roller spaced from the first embossing roller and with the first ply of web material stationary in the first path.

Abstract: An unmanned aerial vehicle (UAV) has a multicopter section for flying in air with an attached blower section for generating an air stream for blowing dust off surfaces. A flight controller controls the multicopter section, a blower controller controls the blower section, and a power supply supplies power to the multicopter and blower sections. The flight controller and the blower controller are connected, and the blower controller is adapted to supply blower control commands to the flight controller to compensate for the thrust of the air stream from the blower section by flight control of the multicopter section. The UAV may be enclosed by a protective cage in the form of a meshed polyhedron, wherein the rods of the meshes are elastically connected at the respective nodes.

Abstract: The invention relates to a discharge screw arrangement (12) for discharging lignocellulosic material (7) from a lignocellulosic treatment reactor (1) and comprises a discharge screw (10), a feeder pipe (11) and a blow pipe (5), the discharge screw being accommodated in and rotatably arranged inside the feeder pipe and being configured to mechanically transport the lignocellulosic material in a longitudinal direction along a rotational axis of the discharge screw through the feeder pipe towards a downstream end (14) of the feeder pipe, which discharge screw arrangement is configured to allow steam to flow through the feeder pipe to help transporting the lignocellulosic material in the longitudinal direction along through the feeder pipe and out of the feeder pipe through an outlet nozzle (24) arranged in a side wall of the feeder pipe (11) at the downstream end of the feeder pipe and into the blow pipe, wherein the discharge screw arrangement further comprises a material spreader (20), which is rotatably arran

Abstract: An arrangement and a method for adjusting a blade gap in a refiner. The arrangement comprises at least one loading device arrangeable to move at least one refining element of the refiner in respect of at least one another refining element of the refiner for adjusting the blade gap between the refining elements, at least one vibration measuring device for measuring a vibration of the refiner in operation, and at least one control unit configurable to adjust the blade gap between the refining elements by controlling the at least one loading device to move the at least one refining element in respect of the at least one another refining element based on the measured vibration of the refiner.