Abstract: A device and a method for weighing a roll of continuous web material on a spool at a weigh-ing station in a continuous process is described, which has fewer mechanical parts and is safer to use than prior devices and methods. The device is arranged adjacent to at least one of a pair of guide rails and comprises a damper and a load cell, wherein the load cell is integrated into at least one guide rail.

Abstract: A method for processing a lignocellulose biomass material with a moisture content below 10 weight-% and an ash content below 1.0 weight-% includes: adding an acid catalyst to the lignocellulose biomass material; after adding the acid catalyst, thermally treating the lignocellulose biomass material with steam at an elevated pressure and an elevated temperature in at least one reactor; discharging the lignocellulose biomass material and blow steam from the at least one reactor using a steam explosion discharge device; and forming pellets and/or briquettes from at least part of the discharged thermally treated lignocellulose biomass material.

Abstract: A pulp bale press for compressing pulp bales and configured for use in a pulp bale production line includes: a base; a top positioned opposite the base and connected to the base; and a movable pressing element configured to move between the base and the top. The pulp bale press is configured to compress a first pulp bale to be compressed between the base and the movable pressing element and to compress a second pulp bale to be compressed between the top and the movable pressing element. The movable pressing element is movably attached to the base via a first plurality of hydraulic cylinders comprising at least two hydraulic cylinders. The movable pressing element is movably attached to the top via a second plurality of hydraulic cylinders comprising an equal number of hydraulic cylinders as the first plurality of hydraulic cylinders.

Abstract: The present invention relates to a method for manufacturing a support body arrangement for an apparatus having an extended nip formed between the support body and a counter-pressure member, wherein the method comprises: providing a base body (51) comprising at least one pressure chamber configured to be pressurized for controlled expanding of the base body in a first direction; providing a support body (52) comprising a working surface (15) for forming an extended nip with a counter-pressure member; providing a mounting structure (53); mounting the support body (52) on the base body (51) by applying the mounting structure (53) so that movement of the support body (52) in relation to the base body (51) is prevented, wherein the support body (52) is placed on the base body (51) so that the working surface (15) faces away from the base body (51). The invention also relates to a support body arrangement.

Abstract: A folding apparatus for folding ends of a wrapping material around a pulp bale, said folding apparatus including: at least two folding arms, each including a contact element at an end thereof; at least two electric actuators, each configured to co-act with a folding arm such as to displace its contact element for making contact with the wrapping material to fold said wrapping material around an edge of the pulp bale; and a control unit configured to: determine, for each electric actuator, at least one operating parameter including a position parameter correlated to a position of one or more contact element and/or a force parameter indicative of actuator torque or force and/or a speed parameter indicative of a speed of rotation or displacement of the electric actuator, and control said at least two electric actuators using said at least one operating parameter.

Abstract: A method for recycling textile material comprising cellulose, the method comprising treating (2) the textile material using Hot Caustic Extraction, HCE, and, after said treating, bleaching (4) material obtained from said treating The HCE is carried out at a temperature of at least 100° C. The bleaching comprises at least one of ozone bleaching at a total ozone charge of more than 5 kg/odt; chlorine dioxide bleaching, and hydrogen peroxide bleaching at a total charge of more than 13 kg/odt.

Abstract: A method for producing a product comprising a porous metallic material and a product comprising a porous metallic material. Said method comprises the steps of:—building the porous metallic material of the product by additive manufacturing; and—polishing at least a part of a surface of said porous metallic material of said product by vibration polishing.

Abstract: A treatment vessel for treating lignocellulosic material comprises a main section having a first end and a second end, and an outlet section that is conical or frustoconical and tapers from a first end joined to the second end of the main section towards a second end having an outlet opening. A conical body is arranged within the treatment vessel, the vertex of the conical body pointing away from the main section. The conical body is positioned such that the base thereof is positioned within a perpendicular distance (d) from a transition plane (T) defined by the junction between the first end of the outlet section and the second end of the main section, wherein the perpendicular distance (d) is ¼ or less of the diameter (D) of the main section. A half angle (?) of the conical body is 0.5-20° less, preferably 5-15° less, such as 10° less, than a half angle (?) of the outlet section.

Abstract: The present invention relates to a water and air separation device (100) comprising—an entry portion (10) having a receiving inlet (11), —a guide portion (20) comprising—a housing (24), —a separation chamber (40), —an inlet (21), —a plurality of guide channels (12) for transporting whitewater spray into the separation chamber, —a liquid outlet (22), —a gas outlet (23), and wherein the guide portion (20) further comprises—a first separation plate (41) arranged to divide the separation chamber (40) into a first section (A) and a second section (B), so that a connecting passage (46) is formed for allowing whitewater to pass into the second section (B) underneath the first separation plate (41) and thereby separate the whitewater from air of the whitewater spray.

Abstract: A pre-hydrolysis pressure vessel system includes; a material inlet for receiving biomass material to be treated in the pre-hydrolysis pressure vessel system and a material outlet for expelling treated biomass material out from the pre-hydrolysis pressure vessel system; a transport screw arrangement including a transport screw provided inside an enclosing housing of the transport screw arrangement, said transport screw being configured for transporting biomass material through the enclosing housing towards the material outlet of the pre-hydrolysis pressure vessel system. The enclosing housing includes a cleaning arrangement that includes: at least one elongated fluid channel positioned in connection with an inner wall of the enclosing housing and wherein said at least one elongated fluid channel comprises a number of fluid outlets, and at least one cleaning fluid inlet which is provided through the enclosing housing in fluid connection with the at least one fluid channel.

Abstract: The present invention relates to a support body (50) for a paper machine having an extended nip formed between the support body and a counter-pressure member, wherein the support body comprises—a base body (51) comprising an upper surface facing in the first direction, —a cover body (52) comprising a working surface (15) for forming an extended nip with a counter-pressure member, wherein the cover body (52) is mounted on the upper surface of the base body (51) such that the working surface faces in the first direction, and wherein the cover body (52) comprises a first material, said first material being a polymer. The invention also relates to a paper machine comprising a support body (50).

Abstract: The present invention relates to systems and methods for calculating the additional local stretching of a moving web through a converting process in order, during rewinding, to find the position of defects in the web that were identified during winding and stopping the web with the web defect close to or at a defect correcting station. The method comprises, during rewinding of the web, the steps of detecting position markers (PM(n)) applied during winding of the web (5), measuring the distance between the position markers, calculating the additional local stretching between the position markers occurring during rewinding, applying the calculated additional local stretching to the known position of a following web defect to determine an estimated position of that web defect in the rewinding web. A method for correcting a web defect comprises the step of subsequently stopping the web with the web defect at, or close to, a defect repairing station (38).

Abstract: A method for processing a lignocellulose biomass material with a moisture content below 10 weight-% and an ash content below 1.0 weight-% includes: adding an acid catalyst to the lignocellulose biomass material; after adding the acid catalyst, thermally treating the lignocellulose biomass material with steam at an elevated pressure and an elevated temperature in at least one reactor; discharging the lignocellulose biomass material and blow steam from the at least one reactor using a steam explosion discharge device; and forming pellets and/or briquettes from at least part of the discharged thermally treated lignocellulose biomass material.

Abstract: The invention relates to steel Yankee cylinders for tissue-making machines and tissue-making machines using such steel Yankee cylinders wherein the outer surface (9) of the cylindrical shell of the steel Yankee cylinder is formed by a steel of the grade P690 as defined in European Standard EN 10028-6:2017 or a similar steel.

Abstract: A method for continuously treating biomass material includes: feeding the biomass material into a substantially vertically arranged pressurized vessel; adding steam to said pressurized vessel for hydrothermal treatment of the biomass material, wherein said adding steam comprises adding steam at a lower portion of the pressurized vessel; discharging the biomass material from a bottom portion of the pressurized vessel using a discharge device; withdrawing vapor from a top portion of the pressurized vessel, and adding said vapor to the discharge device; controlling differential pressure between said top portion of the pressurized vessel and said discharge device by controlling a flow of said vapor; and determining a minimum flow of steam needed to heat the biomass material in the pressurized vessel to a predetermined temperature, wherein said adding steam comprises adding steam at a flow that is higher than said minimum flow.

Abstract: The present invention relates to a heat recovery system 10, 11, 12 for recovering heat from flue gas generated by combustion at a biomass plant installation. The heat recovery system 10, 11, 12 comprises a flue gas cooler 200 configured to receive flue gas 201 from a combustion and transfer heat from the flue gas 201 to feed water in a heat recovery fluid circuit 101. The feed water in the heat recovery fluid circuit 101 is taken from and returned to a feed water main system. The feed water main system could be provided with a feed water tank 100 to which a heat recovery circuit inlet 112 and a heat recovery circuit outlet are connected. Further, the heat recovery system comprises a waste heat accumulator 300 configured to receive feed water, heated by flue gas 201 in a flue gas cooler 200, and cool by flashing the received feed water in order to generate flash steam, and the heat recovery system 10, 11, 12 comprises a control arrangement 533.

Abstract: A device and method of winding a web (W) of tissue paper or a non-woven material onto spools (2) to form a succession of web reels (3) on the spools (2) wherein the force in the winding nip (5) is measured and, as the diameter of the web reel (3) grows, the spool (2) on which the web reel (3) is wound is moved during winding along a horizontal plane such that, in the horizontal direction, the distance between the first supporting drum (4) and the spool (2) increases, and the second supporting drum (9) is moved vertically downwards to match the increasing size of the web reel (3) while maintaining contact with the web reel (3) to such an extent that a nip force between the web reel (3) and the second supporting drum (9) is maintained, and the first supporting drum (4) is moved vertically downwards as the diameter of the web reel (3) grows and moved to such an extent that the measured nip force in the winding nip (5) remains substantially at a set value or within the range of a predetermined upper and a predete

Abstract: A system for processing lignocellulosic materials includes: a pressurization vessel configured to perform hydrothermal treatment of the lignocellulosic materials using saturated or superheated steam; a pressure sealing screw configured to continuously discharge hydrothermally treated lignocellulosic material from the pressurization vessel to a discharge chamber; a control valve configured to add steam to the discharge chamber for pressure control; and a discharge nozzle configured to discharge the lignocellulosic material and steam from the discharge chamber with expansion of steam. The control valve is configured to add the steam to the discharge chamber so as to control a pressure in the discharge chamber to different levels at varying flow rates of the lignocellulosic material and to thereby control a ratio of an amount of steam that escapes through the discharge nozzle to an amount of the lignocellulosic material discharged through the discharge nozzle.

Abstract: A blade for a refiner for refining of lignocellulosic material includes a blade surface configured to face another blade of the refiner and having a refining portion comprising a plurality of bars and a plurality of dams, each dam extending between two adjacent bars of the plurality of bars. The plurality of dams comprises a first dam extending along a first dam axis, and a second dam extending along a second dam axis. The first dam axis is offset from the second dam axis in a direction along the first bar axis. A first bar comprises a bar section that extends between the first dam axis and the second dam axis. The bar section has a width in a width direction perpendicular to a first bar axis that is larger than a width in the width direction of a remainder of the first bar outside of the bar section.

Abstract: A blade for a refiner for refining lignocellulosic material is delimited by an inner periphery and an outer periphery and includes: a blade surface with a refiner portion on which a plurality of refiner bars are arranged, where: each refiner bar extends from an outer bar end to an inner bar end, and the plurality of refiner bars are arranged so that a movement along a bar extension from an outer bar end to an inner bar end of a refiner bar is also a movement in a first circumferential direction; and a dam that extends from an outer dam end to an inner dam end and connects at least three refiner bars, and wherein the dam is arranged so that a movement along a dam extension from an outer dam end to an inner dam end is also a movement in the first circumferential direction.