Abstract: An assembly for handling reel spools (55) has spaced parallel horizontal support rails (12) and parallel vertical support elements (13; 15). Each of the horizontal support rails (12) extends between two of the vertical elements (13, 15) such that one vertical support element (13; 15) is arranged at each end of the support rail (12). Hoisting devices (30) are mounted to vertical elements at an unwinder end for raising reel spools above the rails for transfer to a reel spool transfer device (40) arranged on the support rails (12) which is movable to transport a hoisted reel spool to an opposite end where the reel spools are received by lowering devices (70). The invention also relates to a reel-up-unwinder system for a fiber web production line.

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: An apparatus for measuring flowing suspension includes a radiation source that directs wave motion to the suspension, a flow causing particles of the suspension to be sorted by size. A measuring arrangement measures first values of a first parameter of the wave motion interacted with the suspension at a first wavelength band of the wave motion, and measures second values of at least one of the following: a second parameter of the wave motion interacted with the suspension, and the first parameter of the wave motion interacted with the suspension at a second wavelength band of the motion, the measurement of the first and second values being synchronized. The arrangement forms at least one comparison being configured to relate to one of the first and one of the second values, and forms a distribution with at least one of first values as a function of one of the comparisons.

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: The invention relates to a bracket for a pivot rod in a doctor arrangement. The bracket has a base with a mounting aperture and adjacent ears with a hole for a pivot rod arranged perpendicular to the base. The bracket is a cast or 3D-printed piece. The invention also relates a doctor arrangement for a fiber web machine.

Abstract: An eccentric butterfly valve having a closure member, a sealing surface extending along an outer periphery of closure member to form a sealing plane, a drive shaft having a center axis and a first end protruding out of the valve, a first opening and second opening, and closure member engages a second end of the drive shaft. The closure member is rotatably arranged in the valve to be moved by rotation around the center axis of the drive shaft between a fully closed position and a fully open position. Furthermore, the closure member has a first face facing towards the first opening of the valve in the fully closed position and a second face facing towards the second opening of the valve in the fully closed position. The closure member is provided with a balancing disk extending from the first face and being perforated by a plurality of through holes.

Abstract: An outlet pipe includes a discharge pipe having an inlet end for receiving fluid and an outlet end for passing fluid, a connector attached to the discharge pipe to cover the inlet end, and a wear module arranged in a cavity limited by the discharge pipe and the connector. The connector has an interface surface for attachment to an outlet face of a valve providing the fluid, and the wear module has a conduit so that at least the discharge pipe and the conduit mutually define a flow channel passing fluid from the interface surface to the outlet end.

Abstract: A canister which has a substantially cylindrical form and comprises an innermost compartment located around an imaginary center axis of the cylindrical form and extending longitudinally in axial direction of the canister. The canister comprises cleaner cones, which have a substantially cone-like form with a hollow inside and which cleaner cones are removably mounted to the canister and located in the canister such, that narrow ends of cone form of the cleaner cones extend to the innermost compartment and wide ends of the cone form of the cleaner cones extend to the cylindrical circumference of the canister. The cleaner cones comprise covers and the cleaner cones are mounted such that cover of the cleaner cone is outside the canister. The canister further comprises an inspection light source configured to provide a visible indication of status of a cleaner cone of the canister in view of possible plug in the cleaner cone, when the light source is in operation.

Abstract: A blade segment (4, 8) for a refiner (1) for refining fibrous material has a first (20) and a second (21) end edge and a first (22) and a second (23) side edge opposite to the first side edge (22) and a refining surface (5, 9) having blade bars (27, 27a, 27b) and grooves (28, 28a, 28b) therebetween on a front surface (25). At least one opening (14, 15) is on at least at one side edge (22, 23) which extends through the whole thickness of the blade segment body (24). There is at least one feed groove (29) on the refining surface, the feed groove (29) extending from the opening and crossing the blade bars and the blade grooves for feeding the material to be refined across the refining surface. The blade bars (27, 27a, 27b) of the blade segment are interlaced at the feed groove.

Abstract: A blade segment (4, 4a, 4b, 8, 8a, 8b) for a refiner (1) for refining fibrous material has first (20) and second (21) end edges and first (22) and second (23) side edges, the first (22) and second (23) side edges extending between the first (20) and second (21) end edges. The segment has a refining surface (5, 9) with blade bars (27) and grooves (28) on the segment front surface (25). At least one opening (14, 15) at the side edge (22, 23) extends through the whole thickness of the segment body (24) and towards the opposite side edge (22, 23). A guide element projects from the segment background surface (26) at the side edge which provides a guide surface that intensifies the feed of the material to be refined through the opening to the refining surface of the blade segment into the refining chamber of the refiner.

Abstract: The invention relates to a tissue paper making machine designed for possible rebuild from one concept to another. The machine comprises a forming section (2) and a Yankee drying cylinder (3) mounted to be rotatable about a first axis of rotation (A1). The forming section has a forming roll mounted for rotation about a second axis of rotation (A2) which is parallel to the first axis of rotation (A1). The forming section (2) has a head box (5) and a first and a second forming fabric (6,7). The head box (5) is arranged to inject stock into a gap (8) between the first forming fabric (6) and the second forming fabric (7). The first forming fabric (6) is a felt that forms a loop and is arranged to carry a newly formed fibrous web (W) from the forming section (2) to the Yankee drying cylinder (3). The tissue paper making machine (1) comprises a press roll (9) arranged inside the loop of the first forming fabric (6) and forming a nip (N) against the Yankee drying cylinder (3).

Abstract: A loading device (10) is used to adjust the size of a blade gap (9) in processing equipment for processing fibrous material. The loading device has a gearing (12) coupled in connection with a processing element (5, 6) to move the processing element (5, 6) in respect of another processing element (5, 6) for adjusting the size of the blade gap (9) between the processing elements. A cage induction motor (14) has a shaft (15) coupled to the gearing for operating the gearing, a position sensor (16) for measuring a rotational position (M-RP) of the shaft of the motor for indicating a position of the processing element in respect of the another processing element, and a frequency converter (17) coupled to the position sensor and to the motor for controlling the operation of the motor based on the measured rotational position of the shaft of the motor.

Abstract: A refining segment (4, 8) for a refiner (1) for refining fibrous material has a body (20) with a front side (21) and a backside (22). The front side has a refining surface (5, 9) and the backside has a background surface (23). The refining segment has a first end edge (15) and a second end edge (16) opposite to the first end edge, and a first side edge (17) and a second side edge (18) opposite to the first side edge. The first side edge and the second side edge extend between the first end edge and the second end edge. The refining segment has backside support projections (29, 30) which project from the background surface and extend substantially along the first side edge and the second side edge without support projections extending substantially along the first end edge and the second end edge on the background surface.

Abstract: The embossing device includes one or more cameras with respective lighting and image acquiring systems to acquire images of one or more plies of the produced cellulose web material. The images can be used to detect any defect in the produced material and to alarm, or signal the need for intervention on an embossing device. Based on the defects on the product detected by processing the acquired images, it is also possible to directly intervene on functional units of the embossing device, to remove or reduce the defects.

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 method for removing ammonia (NH3) from a gas produced in a pulp mill (100). The method comprises producing raw non-condensable gas comprising ammonia (NH3) in the pulp mill (100) and transferring at least some of the raw non-condensable gas to a scrubber (200) containing aqueous scrubbing solution (130, 140). The method comprises adding a compound capable of decreasing a pH of the scrubbing solution to the scmbbing solution (130, 140) and in the scrubber (200), contacting the raw non-condensable gas with the scmbbing solution (130, 140), to react the ammonia (NH3) of the raw non-condensable gas with the scmbbing solution to produce clean non-condensable gas and ammonium (NH4+). A pulp mill comprising equipment for performing the method.

Abstract: A leaf filter bag for a leaf (110) of a pressure leaf filter (100) has a first sheet portion (50), adjacent to a second sheet portion (60). The first sheet portion (50) is connected to the second sheet portion (60) at a first edge (10), a second edge (20) and a third edge (30). Forth edges of the sheet portions define an openable and closable edge (40) which has an open position and a closed position, which allows inserting a frame (122) of the leaf (110) into the leaf filter bag (1) through an opening formed by the openable and closable edge (40) in the open position. A zipper (42) closure (41) is provided at the openable and closable edge (40), and a further hook-and-loop fastener closure may be provided.

Abstract: A monitoring apparatus for a doctoring comprises a vibration sensor which is individual and is attached at a discrete location of a doctor blade arrangement, the at least one vibration sensor converting a mechanical vibration of the doctor blade arrangement to an electrical signal, the mechanical vibration being caused by the doctor blade in response to a scraping operation of a rotating roll which is in contact with a moving web. A data processing unit receives the electrical signal carrying information on the vibration, compares said vibration with a reference of at least one previous measurement of a same grade of the web, and start one or more preventive actions in order to avoid a drop-through in the case said vibration exceeds at least one boundary of the reference.

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.