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| Number | Title | Issue Date |
| 8187425 | Apparatus for washing and dewatering pulp Apparatus for washing and dewatering pulp including a pair of rotatable press rolls with a permeable outer surface in a casing including a vat in which the press rolls are installed is provided. A gap is provided between the vat and the press rolls as well as means ... | 05/29/2012 |
| 8182653 | Refiner steam separation system for reduction of dryer emissions A refiner steam separation system according to the present invention includes a blowline for transporting a mixture of fiber material from a refiner to an inlet of a steam separator. Waste steam is discharged from the separator through a waste steam outlet. Cleaned ... | 05/22/2012 |
| 8057639 | System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process A system has been developed for pretreating cellulosic biomass feed stock including: a first pressurized reactor receiving the feed stock, wherein the feed stock undergoes hydrolysis in the first pressurized reactor; a sealing device having a first pressurized coupl... | 11/15/2011 |
| 8048271 | Arrangement for washing and dewatering cellulose pulp Apparatus for washing and dewatering cellulose pulp is disclosed comprising: a rotatable press roll having a perforated outer surface for dewatering the pulp; a stationary guide surface arranged at a distance from the perforated outer surface so as to enclose the pr... | 11/01/2011 |
| 8048270 | Apparatus for distributing a pulp flow An apparatus for distributing a pulp flow, said apparatus including: a valve body connected to an inlet conduit and an outlet conduit for the pulp flow and provided with a closing member for opening and closing the valve to regulate the pulp flow; a distribution mem... | 11/01/2011 |
| 7981251 | Method and arrangement for feeding chemicals into a process stream An apparatus for feeding one or more chemicals into a process stream of a papermaking process is disclosed, as well as a method of utilizing the apparatus for feeding one or more chemicals into a process stream is disclosed. ... | 07/19/2011 |
| 7846297 | Method and device in a dryer section of a fibre-web machine, such as a paper or board machine A hood (10) is located above a web forming section (12), a press section (14) and/or a dryer section and includes a ceiling (30), a back side wall, and a front side wall (44), which includes staggered wall segments (42). The... | 12/07/2010 |
| 7785445 | Arrangement for the treatment of cellulose pulp A washing arrangement for washing and dewatering cellulose pulp is disclosed, comprising at least one rotary cylindrical element, against which the pulp is dewatered, and where a seal is located in an end seal holder, so that the seal has a contact surface against t... | 08/31/2010 |
| 7749358 | Installation module for a paper or board machine A wet end of a paper or board machine has at least one vertical, self-supporting installation module (10a, 10b) to be positioned into connection with the machine which module is supported from its lower end by foundation structures of the... | 07/06/2010 |
| 7368037 | Refiner steam separation system for reduction of dryer emissions A refiner steam separation system according to the present invention includes a blowline for transporting a mixture of fiber material from a refiner to an inlet of a steam separator. Waste steam is discharged from the separator through a waste steam outlet. Cleaned ... | 05/06/2008 |
| 7252739 | Method for distributing cellulose pulp of low and medium consistency in order to form a uniform pulp web The method is for distributing cellulose pulp that has a 2-12% consistency. A manifoid housing is in fluid communication with distributor housing. The distributor housing has holes that are distributed along a generatrix of the distribution housing. The cellulose pu... | 08/07/2007 |
| 7220340 | Paper machine clothing and method for its manufacture The invention concerns a porous paper machine clothing (1) for dewatering a paper web in a paper machine, having a yarn layer made up of at least one ply (2) of longitudinal yarns (3) and at least one ply (4) of transverse yarns (5, 6,... | 05/22/2007 |
| 7166194 | Water jet cutter A water jet cutter for separation of a trim strip from a moving paper, cardboard, tissue or other type of fiber web, in a machine for the production and/or conversion of the fiber web, including at least one nozzle whose water jet is directed onto the fiber web. An ... | 01/23/2007 |
| 7121411 | Screen apparatus It is an object of the present invention to provide a screen apparatus having a function of dilute water which is suitable for a centripetal type screen which rotates inside the screen. A screen apparatus A comprises a tank 1 for receiving paper raw materials... | 10/17/2006 |
| 7082348 | Computer based method and system for controlling an industrial process A computer based method for controlling an industrial process that includes at least two unit processes, including the steps of directly controlling the process by a control model including one or more algorithms, and automatic diagnosis of the validity of the proce... | 07/25/2006 |
| 7077931 | Method and bleaching line with a main conduit for wash liquor The method is for bleaching cellulose pulp in a bleach line that has at least two bleaching steps. The filtrate distribution is led up through the bleaching line counter-currently to the flow of cellulose pulp established in the bleaching line. A single joint main c... | 07/18/2006 |
| 7005043 | Method of fabrication of a dryer fabric and a dryer fabric with backside venting for improved sheet stability A method of manufacturing and a papermaker's or industrial fabric, such as a dryer fabric for the dryer section of a paper machine, includes the application of a polymeric resin material onto preselected locations on the backside of a base substrate using a piezojet... | 02/28/2006 |
| 6966970 | Method for supplying washing liquid to a process for cooking cellulose pulp The invention relates to a method for supplying washing liquid to a digester (1) for cellulose pulp and a subsequent diffuser washing device (2a, 2b). A high, disturbance-free production capacity can be obtained by using a common feed pump (P... | 11/22/2005 |
| 6932756 | Corrugated cardboard manufacturing machine A corrugated cardboard manufacturing machine (10) wherein at least one continuous supporting belt (11) for supporting/conveying a sheet of cardboard is moved along a predetermined path by actuating means (13); and where the supporting belt (1... | 08/23/2005 |
| 6905575 | Arrangement for the web threading of a multi-roll calender In a paper/board or finishing/converting machine, a calender (1) comprises a number of rolls (2, 3) formed into a roll stack, and a number of lift-out rolls (4), which are arranged in such a way that the web (W) being treated travels from one ca... | 06/14/2005 |
| 6705554 | Rotor for a paper stock processing machine, anti-wear element for such a rotor, and paper stock processing apparatus Rotor for a paper stock processing machine, an anti-wear element for protecting a leading front surface of a rotor blade, and a paper stock processing apparatus. The rotor includes at least one rotor blade having a leading front surface to be protected, and an anti-... | 03/16/2004 |
| 6582554 | Continuous digester having a sectioned top separator with multiple liquor extraction ports A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from ... | 06/24/2003 |
| 6447645 | Feeding cellulose material to a treatment vessel A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to mini... | 09/10/2002 |
| 6139684 | Method and apparatus for decontaminating liquid suspensions A method and apparatus for decontaminating a liquid suspension comprising a decontaminating cell. The decontaminating cell has an upper light contaminate collection hood and/or a lower heavy contaminate collection trough. A method and apparatus are provid... | 10/31/2000 |
| 5970862 | Seal in a roll press Apparatus for sealing a roll press including a seal extending along at least one of a pair of press rolls, the seal including a resilient member extending from the vat in which the press rolls are disposed towards one of the press rolls and a wear member ... | 10/26/1999 |
| 5951822 | Apparatus for making granular material A process is disclosed which utilizes the "non-papermaking" portion of waste paper to produce a highly absorbent, essentially fiber-free granule which can be used, for example, as an agricultural chemical carrier. The process maximizes the amount of long ... | 09/14/1999 |
| 5882481 | Blocking device in a paper-making machine A machine for the production of a continuous web, particularly of paper or cardboard, may include a plurality of rolls around which a continuous web may be guided. The machine may also include a blocking device, arranged in a vicinity of an edge of the co... | 03/16/1999 |
| 5827400 | Liquid treatment device Apparatus for liquid treatment and dewatering of material suspensions is disclosed including a pair of rotatable liquid permeable press rolls within a vat and in which the vat includes a bottom defining the space directed towards the nip between the press... | 10/27/1998 |
| 5766418 | Handling fibrous material used to produce cellulose pulp Untreated wood chips are fed to treatment, e.g. steaming at substantially atmospheric pressure, using a mechanical conveyor. Steaming may be accomplished utilizing a vertical chip bin with one dimensional convergence and side relief fed by a horizontal co... | 06/16/1998 |
| 5733413 | Method for removing contaminates from aqueous paper pulp The present invention provides a method for decontaminating aqueous paper pulp comprising a decontaminating cell. The decontaminating cell has an upper light contaminate collection hood and/or a lower heavy contaminate collection trough. Paper pulp is pro... | 03/31/1998 |
| 5681427 | Apparatus for treating pulp produced by solvent pulping An apparatus and process for the solvent pulping and washing of pulp using vessels purged of oxygen free gas when the process is arrested or terminated. The washing is accomplished by first continuously passing the pulp to a pressure diffuser, then to a f... | 10/28/1997 |
| 5589035 | Liquid treatment device Apparatus for liquid treatment and dewatering of material suspensions is disclosed including a pair of rotatable liquid permeable press rolls within a vat and in which the vat includes a bottom defining the space directed towards the nip between the press... | 12/31/1996 |
| 5567279 | Variable stage pressure diffuser Located within the annular screen of the pressure diffuser is a tubular baffle hung from adjacent the top of the vessel. The baffle has two headers disposed on its inner surface, with openings in the tube providing communication between the exterior of th... | 10/22/1996 |
| 5407538 | Device for separating a mixture of paper pulp and contaminants An apparatus for separating out the contaminants in a pulp slurry in which the housing of the separator is divided by a perforated screen into an inlet and an outlet section. The inlet section of the separator has a rotating blade mixing means to propel t... | 04/18/1995 |
| 5346590 | Dryer screen in a paper machine A dryer screen in a paper machine has two superimposed connected gauze structures. It has a surface gauze layer an a bottom gauze layer, each having respective weft threads (1, 3) and warp threads (2, 4). In the dryer screen, the warp threads (2, 4) are s... | 09/13/1994 |
| 5221437 | Screening apparatus for paper making stock Screening apparatus for separately removing knots and heavy reject particles from paper making stock comprises a generally cylindrical vertical housing having the interior thereof separated by a cylindrical perforated screening member into an annular scre... | 06/22/1993 |
| 5217577 | Wire-link belt A wire-link belt 1, 41 comprises a first and second, opposite belt side 32, 34; 61, 64, the first side supporting a moving length of material or a web of paper 33, 62, said wire-link belt further comprising a plurality of interlinking wire coils 2, 3, 4, ... | 06/08/1993 |
| 5068023 | Electrode arrangement In the cathodic protection of a metal suction roll having a cylindrical shell with a plurality of holes extending therethrough, an insulating sleeve disposed in each hole and an anode disposed in each sleeve.... | 11/26/1991 |
| 5021125 | Pistonless accumulator A hydraulic accumulator prevents oil with gas entrained in it from exiting the accumulator. The accumulator comprises a completely static structure which provides laminar flow of oil from a gas pad to the accumulator outlet. The laminar flow is preferably... | 06/04/1991 |
| 4746404 | Chip presteaming and air washing A method and apparatus are provided for effecting prestreaming and deaeration of wood chips, or like comminuted cellulosic fibrous material. Presteaming takes place in a vertical presteaming vessel, utilizing a plurality of uniformly radially spaced nozzl... | 05/24/1988 |
