СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНОГО ВОЛОКНИСТОГО ИЗДЕЛИЯ

FIELD: textile, paper. SUBSTANCE: article is made with at least partial use of short-fibre cellulose. To form at least two fractions of fibrous material comprising fibres having various composition, short-fibre mass is sifted through a sieve. Besides, fine fibres are separated from cellulose, which pass through the sieve with holes of diameter of 0.2-1.5 mm and which are caught and included into composition of various layers of the fibrous article. EFFECT: improved tensile strength limit and rigidity during tensioning of long-fibre mass, and also dehydration and porosity. 19 cl, 10 dwg, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 432 427 (13) C2 (51) МПК D21F D21H D21H D21H 11/00 (2006.01) 27/38 (2006.01) 27/30 (2006.01) 27/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2009109069/12, 11.09.2007 (24) Дата начала отсчета срока действия патента: 11.09.2007 (73) Патентообладатель(и): М-реал Оий (FI) R U Приоритет(ы): (30) Конвенционный приоритет: 11.09.2006 FI 20060809 (72) Автор(ы): КАТАЙАМАКИ Сеппо (FI), ХАССИНЕН Эса (FI), НИКАЛ Том (FI) (43) Дата публикации заявки: 20.10.2010 Бюл. № 29 2 4 3 2 4 2 7 (45) Опубликовано: 27.10.2011 Бюл. № 30 2 4 3 2 4 2 7 R U (85) Дата начала рассмотрения заявки PCT на национальной фазе: 13.04.2009 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: FI 75200 В, 29.01.1988. US 6068732 A, 30.05.2000. EP 1108813 A1, 20.06.2001. DE 19526205 A1, 30.01.1997. US 5061345 A, 29.10.1991. SU 1650840 A1, 23.05.1991. RU 2178817 C2, 27.01.2002. RU 2202021 C2, 10.04.2003. (86) Заявка PCT: FI 2007/050479 (11.09.2007) (87) Публикация заявки РСТ: WO 2008/031921 (20.03.2008) Адрес для переписки: 190000, Санкт-Петербург, ВОХ-1125, ООО "Перфект-Ассистант", (54) СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНОГО ВОЛОКНИСТОГО ИЗДЕЛИЯ (57) Реферат: Способ касается изготовления многослойного волокнистого изделия, содержащего по меньшей мере два наложенных один на другой ...

СПОСОБ ПОДГОТОВКИ ВОЛОКНИСТОЙ МАССЫ

... 1. Способ подготовки волокнистой массы, подлежащей использованию для изготовления бумаги или картона, в котором волокнистую массу направляют от источника (10А, 10В, 10С) волокнистой массы в процесс подготовки волокнистой массы и далее через систему короткой циркуляции - в напорный ящик бумагоделательной или картоноделательной машины, отличающийся тем, что процесс подготовки волокнистой массы осуществляют в системе трубопроводов для подготовки волокнистой массы таким образом, чтобы поток волокнистой массы проходил непрерывно со скоростью, определяемой объемным расходом. ! 2. Способ по п.1, отличающийся тем, что волокнистая масса является древесной волокнистой массой, полученной химическим, механическим или механохимическим способом, бумажным браком или вторичным волокном. ! 3. Способ по п.1 или 2, отличающийся тем, что источником (10А, 10В, 10С) волокнистой массы является бункер для волокнистой массы, башня для бумажного брака или трубопровод для волокнистой массы, идущий непосредственно ...

ЗУБЦЫ ДЛЯ ДИСПЕРГИРУЮЩЕЙ ПЛИТЫ, ИМЕЮЩЕЙ КАНАВКИ И СУЖЕНИЕ

... 1. Сегмент диспергирующей плиты для удаления загрязнений из волокнистого сырья, при этом сегмент содержит:радиально внутреннюю и внешнюю кромки;множество радиально концентрических рядов зубьев,где каждый ряд зубьев имеет множество зубьев, определяющих множество каналов, размещенных между зубьями, икаждый из каналов имеет нижнюю поверхность канала, причем каждый из зубьев содержит:верхнюю поверхность, ипо меньшей мере одну лицевую поверхность, продолжающуюся от нижней поверхности канала до верхней поверхности;при этом по меньшей мере одна из лицевых поверхностей содержит по меньшей мере две канавки.2. Сегмент диспергирующей плиты по п.1, в котором по меньшей мере одна из канавок продолжается от верхней поверхности до или, по существу, до нижней поверхности канала.3. Сегмент диспергирующей плиты по п.1, в котором по меньшей мере одна из канавок, имеющих наиболее верхний конец, находится ниже верхней поверхности по меньшей мере одного зубца.4. Сегмент диспергирующей плиты по п.1, в котором ...

VERFAHREN UND VORRICHTUNG ZUR STEUERUNG EINER MEHRPHASEN - SIEBEINRICHTUNG

VERFAHREN UND VORRICHTUNG ZUR TRENNUNG VON MATERIALSTRÖMEN

A paper manufacturing process

A process for producing fibrous material from waste paper

A fibrous suspension prepared from waste paper by pulping (at 1), and cleansing by sorting in a screen sorter and/or cyclone (2), is temporarily heated before and/or during its passage through a disintegrating device (7) and prior to the separation of printing ink by flotation (8) or washing (and optically bleeching). The thickened suspension is maintained at temperatures above 85 DEG C during its passage through the disintegrating device (7). This allows types of waste paper, such as xerographic and offset-printed papers, which are difficult to de-ink to be cleaned, and therefore used for the production of fibrous material for paper manufacture. ...

METHOD AND APPARATUS FOR THE TREATMENT OF FIBROUS SUSPENSIONS

... 1510758 Centrifugal separation; comminuting apparatus J M VOITH GmbH 5 Oct 1976 [30 Oct 1975] 41182/76 Headings BID B2A and B2P A suspension of fibrous material, e.g. cellulose or paper, to be purified is fed at 1 under pressure to an inlet chamber 2 of a casing in which a rotor 4 having orifices 3 is arranged for rotation; the suspension then passes through these orifices into the interior of a peripherally-imperforated drum 5 open at one end and arranged coaxially with and about the rotor 4 for rotation therewith. The rotor and drum are rotated to create a vortex 6 within the drum so as to cause heavy impurities in the suspension to move radially outwardly towards the inner surface of the drum and lighter impurities to collect in the central region of the vortex; the heavy and lighter impurities and the rest of the suspension are discharged from the open end of the drum; the heavy and lighter impurities are removed from the casing; the direction of flow of the rest of the suspension is ...

STAFF STRAINER BASKET TO THE FILTRATION OF FIBRE SUSPENSIONS AND PROCEDURE FOR ITS PRODUCTION

PROCEDURE AND PLANT FOR THE PRODUCTION OF IN PARTICULAR FIBROUS MATERIAL FROM WASTE PAPER, CLEANED BY PRINTING INKS

DRUCKSICHTER FUR FASERSTOFFSUSPENSIONEN

VERFAHREN UND ANLAGE ZUR HERSTELLUNG VON INSBESONDERE VON DRUCKFARBEN GEREINIGTEM FASERSTOFF AUS ALTPAPIER

VORRICHTUNG ZUM TEILEN EINER SUSPENSION VON ZELLULOSEFASERPULPE IN MEHRERE TEILE

VORRICHTUNG ZUM ABTRENNEN VON NICHT ERWUENSCHTEN TEILCHEN AUS EINEM FASERSTOFF

SEPARATOR FOR FIBROUS MATERIAL SUSPENSIONS

PROCEDURE AND DEVICE FOR THE ELIMINATION OF STICKY IMPURITIES FROM A WAESSERIGEN STOFFSUSPENSION

DEVICE FOR SEPARATING FROM NOT DESIRED PARTICLES FROM A FIBROUS MATERIAL

MECHANISM FOR SORTING THE CELEBRATIONS THE PARTICLES OF A FIBROUS MATERIAL SUSPENSION IN PARLIAMENTARY GROUPS

PROCEDURE AND DEVICE FOR THE SEPARATION FROM MATERIAL STREAM

PROCEDURE AND DEVICE FOR THE RECUPERATION OF PULP, METALS AND PLASTIC FROM WASTES OF MULTILEVEL PACKING MATERIALS

PROCEDURE AND DEVICE FOR THE PRODUCTION OF A CELLULOSE MASH OF IMPROVED QUALITY.

DEVICE FOR DIVIDING A SUSPENSION OF ZELLULOSEFASERPULPE INTO SEVERAL PARTS

CELLULOSE FIBER MASH WITH IMPROVED SOFTNESS AS WELL AS PROCEDURE FOR ITS PRODUCTION

PROCEDURE AND DEVICE FOR THE FIRST STUFF CLEANING

METHOD AND APPARATUS FOR REMOVAL OF LIGHT MATERIAL FROM A FIBER SUSPENSION

A method and apparatus for the removal of light material from a fiber suspension particularly suitable for removing light compressible plastic material such as expanded polystyrene and similar material from the short circulation of a paper machine. The plastic particles containing fiber suspension is divided in a degassing tank into reject and accept flows by the assistance of vacuum. The light reject containing flow is separated from the main flow by an overflow device and recirculated to the wire pit or corresponding device. A separation device such as a vibrating screen, vibrating drum, curved screen or inverted cyclone is provided within the light reject flow return duct for removing the detrimental plastic or other light material from the short circulation and for preventing the accumulation thereof in the wire pit.

A METHOD FOR SELECTIVE REMOVAL OF RAY CELLS FROM CELLULOSE PULP

The content of ray cells in cellulose pulp causes problems and therefore these ray cells should be removed from the cellulose pulp to improve the pulp quality. The present invention makes this possible and comprises a method wherein at first an advancing pulp suspension is screened or vortex cleaned, (3) leading to the formation of an accept pulp fraction (4) and a reject pulp fraction (5) and that the reject pulp fraction is cleaned and divided, and that accepted material (pulp fibres and valuable fine material) is brought to further treatment and/or use. The invention is characterized in that the cleaning and division of the reject pulp suspension is carried out so that substantially all ray cells are present in the apex fraction of a fractionating cyclone (6) (if that is the kind of device used) and in that said fraction as such constitutes a very limited material stream, or in that a very limited material stream, predominantly containing ray cells is selected from the apex fraction, ...

SEPARATION DEVICE

A separation device having a housing (10) with a feed conduit (1 ) and a reject conduit (2), between which conduits (1, 2) and an accept conduit (3) of the housing (10) is a rotor unit (13) having a shaft (4) transverse to the through-flow direction of the separation device, which shaft rotates discs (5) attached to the shaft (4), the outer surface and/or side surfaces of which discs are jagged, i.e. they have protrusions (6) and/or notches and/or these surfaces are substantially rough and the teeth (9) of at least two sieves (7, 8) attached to the housing (10), extend between the discs (5), the first sieve (7) being between the reject conduit (2) and the accept conduit (3) and the second sieve (8) being between the feed conduit (1) and the accept conduit (3).

METHOD FOR MANUFACTURING A FIBROUS PRODUCT

A method of manufacturing a multilayer fibrous product. The product compr ises at least two overlapping layers, each of which has a different fibre co mposition, and in the production of the product, chemical short stock is use d at least partly. In the method, short stock is brought to a screening stag e where fines, which pass a screen having an average hole size of 0.2-1.5 mm , are separated from it, in order to prepare at least two fibre fractions ha ving different fibre compositions, and the fractions generated are recovered and included in different layers of the same fibrous product. With the inve ntion, it is possible to screen an initial material and form a product which has better properties than a corresponding product, the initial material pu lp of which has only been refined.

METHOD AND MEANS FOR TREATING PULP

Method and means is disclosed for treating pulp, in particular fiber suspensions of the pulp and paper industry, and more specifically, for improvement of pulp mill screening plants, to make their operation more effective and to reduce the need for equipment to reduce the investment costs etc. In the known screening process it is usually desirable to increase the pulpconsistency after the screening to a range of 10 to 15% for storing or after-treatment. It is also desirable to handle rejects by either refining or some other method, but usually at consistency which is higher than that of screening. In other words, the pulp flows always have to be thickened after screening. The present invention comprises a method and means for screening pulp in a pressurized, closed space by means of screens in a consistency range of 1 to 5% and by means of centrifugal cleaners in a consistency below 1%. The various pulp screening and/or cleaning stages are effected in a pressurized state in a closed space in the screening plant. Access of air to the treated pulp is prevented by carrying out the thickening stages in a pressurized state, at the initial pressure corresponding to that of the preceding screening and/or cleaning stage.

CELLULOSE PULPS HAVING IMPROVED SOFTNESS POTENTIAL AND METHOD OF MAKING SUCH PULPS

Cellulosic pulps of selected fiber morphology are disclosed having a coarseness less than a threshold coarseness level. The threshold coarseness level is a function of average fiber length. The cellulosic pulps are especially useful for producing paper structures such as tissue paper. A method for producing the cellulosic pulps is also disclosed.

Verfahren und Vorrichtung zum Sichten von aufgeschwemmte Fasern enthaltenden Wasserströmen, insbesondere für die Papier-, Pappen-, Holz- und Zellstoffabrikation.

PROCEDURE AND ARRANGEMENT FOR WINNING PULP, METAL AND PLASTIC MATERIAL FROM COMBINED PAPER WASTE MATERIAL.

PLANT FOR WASTE PAPER TREATMENT.

PROCEDURE FOR THE ELIMINATION OF STICKY IMPURITIES FROM STOFFSUSPENSION AS WELL AS DEVICE FOR THE EXECUTION OF THE PROCEDURE.

DEVICE IN THE ROUND WIRE SECTION OF A CYLINDER PAPER-MAKING MACHINE.

PROCEDURE FOR THE PRODUCTION OF OF PRINTING INK CLEANED FIBROUS MATERIAL FROM WASTE PAPER.

EPURATEUR-TRIEUR POUR LA SEPARATION DE SUSPENSIONS DE FIBRES

L'invention se rapporte à un épurateur-trieur pour la séparation de suspensions de fibres. L'épurateur-trieur comprend un panier perforé fixe 32, et un rotor 40 disposé concentriquement dans ce panier, une zone d'admission 80, des suspensions de fibres et une zone de sortie 62 de la matière rejetée. En vue d'assurer la dilution de la matière rejetée, l'appareil comporte, au moins à proximité de la zone de sortie 62, des dispositifs 54, avec ouverture inférieure du rotor 40, pour l'amenée de la suspension de fibres. Applications : machines pour la fabrication du papier.

Appareil de repartition d'une pate cellulosique fibreuse

L'invention concerne un appareil de separation d'une pate cellulosique. Elle se rapporte a un appareil qui comprend, dans un meme boitier ferme, un dispositif de separation 2, tournant a grande vitesse et destine a separer les elements indesirables de la suspension, par exemple le sable, les pierres, des elements metalliques, etc, et un dispositif a rotor 12 cooperant avec un dispositif de tamisage 21 afin que la suspension soit separee en diverses fractions. Les elements etrangers sont chasses par une sortie separee 10 alors que la matiere fine est extraite par une sortie separee 23 et la matiere grossiere par une autre sortie 9. Application au traitement de la pate a papier.

PROCEDE ET INSTALLATION DE PREPARATION ET D'EPURATION DE MATIERE FIBREUSE

Dans l'installation représentée, il est prévu entre la sortie de refus 23, 58 du classeur de courant principal 20, 50 et le défibreur (seconde partie de l'appareil 24 ou de l'appareil 60) un autre classeur sous pression (première partie de l'appareil 24 ou de l'appareil 60) pour le refus, le tamis de ce second classeur comportant des orifices de plus petites dimensions que coin du classeur de courant principal et son volume prévu pour le refus étant relié au défibreur. L'installation est destin& à alimenter une machine à papier.

PROCESSO E APARELHO PARA FABRICACAO DE POLPA DE CELULOSE COM PROPRIEDADES DE QUALIDADE APERFEICOADAS

METHOD AND APPARATUS FOR MAKING CELLULOSE PULP HAVING IMPROVED QUALITY

METHOD OF TREATING FILTRATE PRODUCED IN THICKENING OF PAPER FIBRE SUSPENSION

The method treats the filtrate (F3, F6) produced in the course of the thickening (3, 6) of a paper fibre suspension (S, S). The purpose of this thickening (3, 6) is in particular to acquire the necessary consistency in a downstream pulp processing operation (4, 7). The filtrate (F3, F6) produced in the course of the thickening (3, 6) is returned at a later point (11, 12, 16) back to the pulp stream, more particularly at a point (11, 12, 16) lying downstream of the subsequent pulp processing operation (4, 7).

Method And System For Treating A Fibrous Suspension

Methods for treating a fibrous suspension are disclosed, including cleaning the fibrous suspension in a screening room with a plurality of cleaning stages and including a final cleaning stage, and in which the cleaning takes place at a low fiber concentration, and recycling at least a partial flow of the accept from the last cleaning stage to a position before or in the screening room after it passes through a thickener, where the concentration of the accept is increased to a concentration which minimizes dilution of the concentration of the fiber suspension, to which the accept is supplied.

Method of and apparatus for reclaiming metals and plastics from scrap paper

Components of pulped scrap material containing paper, metal and plastic materials are separated by subjecting the pulped material to sorting in cyclone separators, the discharge from the top part thereof being led to a screen sorter where the material is divided into two parts, one part containing in its major part paper stuff, the other part containing plastic material, the discharge from the bottom part of the cyclone separators containing metal components.

FRACTIONATOR

A fractionator for fractioning a suspension in at least two fractions, including a drum (1) rotatable about a substantially horizontal shaft (3) and having inlet means (31) for suspension and at least one outlet means for fractions. The drum (1) includes at least two walls (21, 22, ..., 27) curved about the shaft and extending substantially parallel thereto in the longitudinal direction thereof, said walls defining between them a fluid channel substantially parallel to the shaft (3). The drum is open at both ends so that each flow channel defined by a pair of walls (21/22, 22/23, ..., 26/27) has its own inlet and its own outlet, all inlets (31) being located in the one and the same end of the drum and all outlets in the opposite end of the drum.

A PROCESS AND APPARATUS FOR THE PRODUCTION OF CELLULOSE PULPS OF IMPROVED QUALITY

СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНОГО ВОЛОКНИСТОГО ИЗДЕЛИЯ

... 1. Способ изготовления многослойного волокнистого изделия, содержащего по меньшей мере два наложенных один на другой слоя, имеющих разную волокнистую структуру, и изготовленного по меньшей мере с частичным использованием коротковолокнистой целлюлозы, согласно которому ! для формирования по меньшей мере двух фракций волокнистого материала, содержащих волокна, имеющие различный состав, просеивают коротковолокнистую массу, отделяя мелкие волокна таких размеров, которые проходят сквозь сито с отверстиями, диаметром приблизительно 0,2-1,5 мм, а ! полученные фракции улавливают и включают в состав различных слоев волокнистого изделия. ! 2. Способ по п.1, отличающийся тем, что с использованием сита от целлюлозы отделяют приблизительно 5-30% волокнистого материала, содержащего мелкие волокна, которые проходят сквозь сито с отверстиями, диаметр которых составляет 0,2-1,5 мм. ! 3. Способ по п.1 или 2, отличающийся тем, что с использованием сита с отверстиями, диаметр которых составляет приблизительно ...

ПЛАСТИНЫ УМЕНЬШЕННОЙ МАССЫ ДЛЯ РАФИНЕРОВ И ДИСПЕРГАТОРОВ

1. Сегмент пластины, выполненный с возможностью установки на диск диспергатора или рафинера измельчаемого целлюлозного материала, при этом сегмент содержит:- лицевую сторону сегмента пластины, включающую в себя диспергирующие зубья или размалывающие ножи;- заднюю сторону сегмента пластины на главной поверхности, противолежащей лицевой стороне, включающую в себя выступающую стойку, окружающую структуру установки крепежного элемента, и выступающий участок позиционирования пластины;- боковые края сегмента пластины, расположенные вдоль краев лицевой стороны и задней стороны; и- радиально внешний край и радиально внутренний край, продолжающиеся между боковыми краями;причем задняя сторона не имеет выступающих структур вдоль боковых краев.2. Сегмент пластины по п. 1, в котором задняя сторона содержит по меньшей мере на 20% меньше опорного материала по сравнению с обычным сегментом пластины.3. Сегмент пластины по п. 1, в котором выступающая стойка выровнена вдоль радиальной линии, проходящей от оси вращения диспергатора или рафинера.4. Сегмент пластины по п. 1, дополнительно содержащий вторую стойку и второй участок позиционирования пластины, выровненные вдоль радиальной линии, проходящей от оси вращения диспергатора или рафинера.5. Сегмент пластины по п. 1, в котором радиально внешний край не имеет выступающей структуры.6. Сегмент пластины по п. 1, в котором каждый из выступающей стойки и выступающего участка позиционирования пластины имеет контактные поверхности, и эти контактные поверхности выровнены в общей плоскости.7. Сегмент пластины по п. 1, дополнительно содержащий ребро, продолжающееся радиально наружу от ст�

СЕПАРАЦИОННОЕ УСТРОЙСТВО

СПОСОБ И СИСТЕМА ДЛЯ ОБРАБОТКИ ВОЛОКНИСТОЙ СУСПЕНЗИИ

... 1. Способ обработки волокнистой суспензии, в котором волокнистая суспензия очищается в очистном цехе (2) с последней стадией (3) очистки, проводимой при низкой концентрации волокон, отличающийся тем, что, по меньшей мере, часть потока полезной фракции с последней стадии (3) очистки проходит через концентратор (4), прежде чем будет рециклирована в точке системы, расположенной, по меньшей мере, до одной из стадий очистки, которая осуществляется в очистном цехе (2), при этом концентрация полезной фракции увеличивается до величины, которая сводит к минимуму разбавление концентрации волокнистой суспензии, в которую рециклируют полезную фракцию.2. Способ по п.1, отличающийся тем, что полезную фракцию рециклируют в резервуаре (1) для смешивания, который размещен до очистного цеха (2).3. Способ по п.1, отличающийся тем, что полезную фракцию рециклируют в устройстве (21, 22, 23, 24, 25, 26) для проведения фильтрования, которое размещено в очистном цехе.4. Способ по п.1, отличающийся тем, что часть ...

Waste paper turbo-centrifuge - has paper supply chamber provided with tangential paper supply and impurities removal lines for provision of removable cleaning cover

Waste paper disintegrating and classifying appts. has a cylindrical casing with a front cover with axially spaced waste paper supply chamber, disintegrated paper collecting chamber and a discharge chamber for the light fraction of impurities which enter the discharge chamber from the paper supply chamber through a hollow shaft and radical tubular spigots, each terminating in the respective chambers. The paper supply chamber is supplied with waste paper through a supply line and the heavy fraction of impurities is removed from the chamber through another line, the lines being arranged tangential to the chamber wall. Chambers are emptied periodically by respective valves. Waste paper is disintegrated by an impeller disposed in front of a screen.

PROCEDURE FOR THE FRACTIONATION OF A PAPER FIBER SUSPENSION

MECHANISM FOR SORTING THE CELEBRATIONS THE PARTICLES OF A FIBROUS MATERIAL SUSPENSION IN PARLIAMENTARY GROUPS

VORRICHTUNG ZUM TEILEN EINER SUSPENSION VON ZELLULOSEFASERPULPE IN MEHRERE TEILE

VERFAHREN UND VORRICHTUNG ZUR AUSSCHEIDUNG VON KLEBRIGEN VERUNREINIGUNGEN AUS EINER WAESSERIGEN STOFFSUSPENSION

SICHTER FUER FASERSTOFFSUSPENSIONEN

VERFAHREN UND VORRICHTUNG ZUR RUECKGEWINNUNG VON PAPIERFASERSTOFF, METALLEN UND KUNSTSTOFF AUS ABFAELLEN VON MEHRSCHICHTIGEN VERPACKUNGSMATERIALIEN

MIT EINEM DRUCKSICHTER ZUSAMMENGEBAUTE ROHR- SCHLEUDER FUER FASERSTOFFSUSPENSIONEN

VORRICHTUNG ZUM TEILEN EINER SUSPENSION VON ZELLULOSEFASERPULPE IN MEHRERE TEILE

PROCEDURE FOR THE ELECTRICAL SEPARATION FROM PLASTIC PARTICLES IN SOLUTIONS, IN PARTICULAR IN SOLUTIONS FROM CELLULOSE AND PAPER FIBERS

Approach System-Sorting

Die Erfindung betrifft eine Anordnung zur Behandlung einer Faserstoffsuspension (1) für einen Stoffauflauf (2) einer Maschine zur Herstellung einer Papier-, Karton-, Tissue oder einer anderen Faserstoffbahn mit mehreren Drucksortierern (3, 4, 5), wobei das Accept eines ersten Drucksortierers (3) zum Stoffauflauf (2) und das Rejekt des ersten Drucksortierers (3) zum Zulauf eines zweiten Drucksortierers (4) geführt und das Accept des zweiten Drucksortierers (4) vor dem ersten Drucksortierer (3) der Faserstoffsuspension (1) beigemischt wird. Dabei sollen der Aufwand sowie der Energiebedarf dadurch vermindert werden, dass Rejekt des ersten Drucksortierers (3) ohne Pumpe zum zweiten Drucksortierer (4) geführt wird.

FILTERING DEVICE

PROCEDURE FOR THE PRODUCTION OF A BLEACHED TMP OR CTMP OF CELLULOSE

DEVICE FOR THE SEPARATION OF VERUN CLEANING IN FIBROUS MATERIAL SUSPENSIONS

DEVICE FOR CLEANING FIBROUS MATERIAL US PENSIONS

DEVICE FOR DIVIDING A SUSPENSION OF ZELLULOSEFASERPULPE INTO SEVERAL PARTS

PLANT FOR WASTE PAPER TREATMENT

FRACTIONATING DEVICE

MAGNETIC DEINKEN OF WASTE PAPER

PROCEDURE AND DEVICE FOR SEVEN OF FIBRE SUSPENSIONS

PROCEDURE AND DEVICE FOR THE CONTROLLING MULTI-PHASES - OF A FILTER MECHANISM

MEANS IN THE VAT SECTION OF A VAT MACHINE

A VAT PAPER MACHINE A vat paper machine is disclosed, said machine including a cylinder-vat unit having a rotatable cylinder mold, a vat and a headbox for providing a continuous supply of stock to the vat. The vat is arranged upstream of the cylinder mold in such a manner that the wire-covered cylinder mold is brought into contact with stock in the vat to form a first web by draining water from the stock through the wire-covered surface of the mold. An outer wire is also provided which runs in a loop over a breast roll, through the vat along its bottom wall and then over and around a portion of the circumference of the cylinder mold. The portion of the bottom wall of the vat which is located between the breast roll and the cylinder mold includes a platform supporting the outer wire. The platform is provided with slit means that form one or more drainage passages which serve to form a second web on the outer wire. The slit means is arranged at a predetermined distance from a nip located ...

REDUCED MASS PLATES FOR REFINERS AND DISPERSERS

A light weight plate segment configured to be mounted on a disc of a disperser or refiner for comminuted cellulosic material including: a front face having disperser teeth or refining bars; a back face having a raised post surrounding a fastener attachment structure and a raised plate positioning section; side edges of the plate segment; and a radially outer edge and a radially inner edge extending between the side edges; wherein the back face lacks raised structures along the side edges.

A PROCESS AND APPARATUS FOR THE PRODUCTION OF CELLULOSE PULPS OF IMPROVED QUALITY

A process and apparatus for the preparation of improved cellulose pulps is provided, in which defibered pulp is screened for removal of shives, and fibers with low bonding ability are removed in hydrocyclones, and rejects fr om the hydrocyclones are treated in refiner. In the process a specific combination of characteristics for the hydrocyclones and the volumetric flow is used in order to prepare pulps which give products of improved qualities, such as higher tensile strength, tear strength, light-scattering, surface smoothness , and especially low shive content.

Cellulose Pulps Having Improved Softness Potential and Method of Making Such Pulps

APPLIANCE FOR SORTING AND DEFLAKING FIBRE SUSPENSIONS

An appliance for sorting and deflaking fibre suspensions has a rotor with a horizontal axis rotatively mounted in a housing. In a first, inlet rotor zone the rotor is provided with entraining means for extracting by centrifugation contaminating particles of high relative density. The rotor is surrounded downstream by a screening cylinder and is also provided with entraining means for the fibre suspension, which deflake and sort out the fibre suspension in a second rotor zone. In a third rotor zone the fibres are washed out of the rejects after water has been added and in a fourth zone the rejects are dehydrated.

FRACTIONATION PROCESS FOR CELLULOSIC FIBERS

Disclosed is a process for fractionating cellulosic fibers that is effective to result in cellulosic fibers that exhibit desired properties such as fiber length and fiber coarseness values. The fractionating process is quite efficient and has been found to produce cellulosic fibers that are more homogeneous in their properties as compared to the starting mixture of cellulosic fibers. Also disclosed is a handsheet prepared from the fractionated cellulosic fibers for use in disposable absorbent products.

APPARATUS FOR DISTRIBUTION AND PURIFYING A FIBROUS CELLULOSE PULP

PROCEDE ET INSTALLATION DE TRAITEMENT DE VIEUX PAPIERS IMPRIMES

Procédé de traitement de vieux papiers comportant des phases de pulpage, pré-épuration, désencrage, par flottation, épuration fine et éventuellement blanchiment, caractérisé en ce qu'il comporte un fractionnement 3 de la pâte en fibres longues 5 et fibres courtes 4, réalisé en amont du désencrage 6, seule la fraction à fibres courtes étant envoyée dans les appareils de désencrage, la fraction à fibres longues étant envoyée au moins à des appareils d'épuration-fine 11 et d'épaississement-lavage 12 avec retour 19 des eaux d'épaississement 16, 17 en amont du fractionnement 3. (CF DESSIN DANS BOPI) ...

METHOD AND DEVICE FOR PULLING THE STOCK AND METALLIC AND PLASTIC MATERIALS FROM WASTE

mídia suporte de imagem, método para formar mídia suporte de imagem e aparelho para fabricar papel fotográfico

Procedure and means for separating plastic particles electrically from solutions, in particular from cellulose and paper fibre solutions

Plastic particles are separated from liquid mediums having the same distributed therethrough, in particular cellulose and paper fiber-containing mediums by electrolytic separation. The liquid medium is introduced into a container provided with an anode, a cathode and a reference electrode, with the plastic particles being separated from the liquid medium by controlling the potential of the anode and the cathode so that the potential of the anode is at most 2800 mV S.C.E., preferably +1200 to -300 mV S.C.E., and the potential of the cathode is at least -3500 mV S.C.E., preferably from +120 to -2100 mV S.C.E. The control of the potentials of the electrodes is effected to such ranges that gas production is selectively provided on the electrodes for cleaning thereof.

Method and system for high alpha dissolving pulp production

A method for pulp processing used in connection with a pre-hydrolysis kraft process (PHKP) includes adding wood chips or similar material to a reaction vessel, performing pre-hydrolysis, and neutralizing the mixture with a first quantity of white liquor followed by a different solution such as a cold caustic extraction alkaline filtrate optionally enriched with white liquor. The neutralization fluids are replaced with a cooking fluid comprising a hot black liquor and alkaline filtrate, optionally enriched with white liquor. The cooking fluid may have a relatively high effective alkali concentration. The cooked pulp may exhibit very low residual hemicelluloses and a kappa number within an optimal range.

Method and a device for separating plastic particles from supensions

PCT No. PCT/FI91/00146 Sec. 371 Date Jan. 10, 1992 Sec. 102(e) Date Jan. 10, 1992 PCT Filed May 9, 1991 PCT Pub. No. WO91/17304 PCT Pub. Date Nov. 14, 1991.The invention relates to a method for separating plastic particles (P) from a suspension (L), e.g. from a cellulose mass or cellulose pulp suspension, in which the fiber-floc material is broken for loosening the plastic particles (P). In the method, turbulent flows are caused to said suspension (L), by means of which flows the particles (P) to be separated are separated from the remaining mass as the fiber network is decomposing, whereby lighter particles (P) are separated. In the method, the suspension (L) obtained in the previous phase is subjected to such a treatment that a concentration difference is achieved, which prevents the fiber network from reforming and thereby the plastic particles (P) from binding thereto, and a flow (F) is directed to the separation point, where the plastic particles (P) are separated from the suspension ...

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 fiber material is discharged from the separator through an exit, which prevents a substantial portion of the waste steam from passing through the exit. A relay pipe communicates with the exit and a dryer duct, and transports cleaned fiber material therebetween. A resin input communicates with the relay pipe, and supplies resin therein. The resin is mixed with the cleaned fiber material prior to the cleaned fiber material being dried in the dryer duct. The present invention is also directed to a method of reducing VOC emissions generated during refining cellulosic fibrous material.

PULP DECONTAMINATION APPARATUS AND METHOD OF USE

The present invention provides an apparatus and method for decontaminating aqueous paper pulp, the apparatus comprising a decontaminating cell (12). The decontaminating cell (12) has an upper light contaminate collection hood (30) and/or a lower heavy contaminate collection trough (40). Paper pulp is provided to the cell (12) under a pulp head sufficient to purge the contaminates therefrom.

ПЛАСТИНЫ УМЕНЬШЕННОЙ МАССЫ ДЛЯ РАФИНЕРОВ И ДИСПЕРГАТОРОВ

FIELD: machine engineering. SUBSTANCE: plate segment adapted for mounting on a disc disperser, or a refiner for the cellulose crushed material comprises a front side having a dispersing teeth or grinding the blades, the back side having a projecting rack surrounding the fastener installation structure, and protruding plate positioning portion, and side edges of the plate segment, the radially outer edge and a radially inner edge extending between the side edges, wherein the back side has no protruding structures along the side edges. Also the disk assembly is disclosed as well as the plate segment to the refiner or dispenser and a method for forming plate segment comprising a casting plate segment using the molten metal is poured into a mould, where the form comprises a recess for the rear side of the plate segment that contains no protruding ribs along the side edges back-side cooling plate segment and the segment extracting from the mould after pouring molten metal, as well as cleaning and removing from the sprue plate segment cooled and grinding the cooled plate segment. EFFECT: weight reduction. 20 cl, 13 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 621 385 C2 (51) МПК D21D 1/30 (2006.01) B02C 7/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ФОРМУЛА (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ 2014119513, 14.05.2014 (24) Дата начала отсчета срока действия патента: 14.05.2014 Дата регистрации: (72) Автор(ы): ИХАЛИНЕН Исмо (GB), РЭЙМОНД Ив (US), РЕНСТРОМ Микаэль (FI) Приоритет(ы): (30) Конвенционный приоритет: (56) Список документов, цитированных в отчете о поиске: US 8006924 B2, 30.08.2011. SU 15.05.2013 US 61/823,566; 17.04.2014 US 14/255,379 (43) Дата публикации заявки: 20.11.2015 Бюл. № 32 (45) Опубликовано: 05.06.2017 Бюл. № 16 Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" 2 6 2 1 3 8 5 1390281 A1, 23.04.1988. SU 1227750 A1, 30.04.1986. RU 2393282 C2, ...

СЕГМЕНТ ДИСПЕРГИРУЮЩЕЙ ПЛИТЫ (ВАРИАНТЫ) И ДИСПЕРГИРУЮЩАЯ ПЛИТА

Сегмент диспергирующей плиты для удаления загрязнений из волокнистого сырья, при этом сегмент содержит радиально внутреннюю и внешнюю кромки, множество радиально концентрических рядов зубьев, где каждый ряд зубьев имеет множество зубьев, определяющих множество каналов, размещенных между зубьями, и каждый из каналов имеет нижнюю поверхность канала. Причем каждый из зубьев содержит верхнюю поверхность и по меньшей мере одну лицевую поверхность, продолжающуюся от нижней поверхности канала до верхней поверхности, при этом по меньшей мере одна из лицевых поверхностей содержит по меньшей мере две канавки, и ширина по меньшей мере одной из канавок отличается от ширин других канавок лицевой поверхности. 7 н. и 16 з.п. ф-лы, 12 ил.

Process for purifying a fibre suspension

The invention relates to the purification of a chemical pulp by screening, the overflow from a first screen (4) being screened once more on a second screen (9). The underflow from the second screen is separated by means of a hydrocyclone (10) and the purified fraction is returned to the first screen (4). The overflow from the second screen (9) is ground in a comminution device (11), and the screening of the overflow takes place either before or after the comminution device. The suspension obtained from the comminution device is passed to the screen upstream of the comminution device and the overflow from the screen downstream of the comminution device is returned to the comminution device. …… ...

Stabsiebkorb zur Filtrierung von Fasersuspensionen und Verfahren zu dessen Herstellung

Production of refined cellulose fibre

A paper manufacturing process

Waste paper bales are delivered to a pulper (13). Water is mixed with the wastepaper to produce a liquid stock. The stock is filtered in batches in a filter (15) to remove waste such as plastics and metal pieces and is returned to the pulper. The stock is further purified in a separator and a number of cleaners prior to delivery to web forming apparatus (48) having a belt with applied suction. When formed, a web is passed over a number of drying rollers of a dryer 53 and through a size press when starch is applied. Progress of the web through the dryer 53 is monitored by sensors which detect any web breaks to immediately cut the web to stop progress of the web through the dryer or size press to cause damage to the latter. The web may be cut by a water or air jet. The web may also be cut at the outlet of the forming apparatus (48). ...

FIBROUS MATERIAL FROM WASTE PAPER

An appliance for sorting fibrous stock suspensions

An apparatus for sorting a fibrous suspension for removing both heavy weight and light weight particulate impurities is disclosed. An antechamber is positioned above a main chamber. Fibrous stock suspension is inletted tangentially to the antechamber and moves down to the main chamber. An annular rotor in the main chamber creates a vortex of the fibrous stock suspension, which drives the heavier particulate impurities to the side wall of the main chamber and moves the lighter weight impurities toward the center of the vortex. The heavier weight impurities fall to the bottom of the main chamber from which they are removed. The lighter weight impurities are removed by a drainage line extending toward the center of the antechamber. Above the rotor is a strainer and the rotor cooperates with the strainer to drive purified fluid suspension to an annular outlet chamber surrounding the bottom of the antechamber and from there into an outlet line.

DEVICE FOR THE SEPARATION OF VERUN CLEANING IN FIBROUS MATERIAL SUSPENSIONS

PRINTING SEPARATOR FUR FIBROUS MATERIAL SUSPENSIONS

FRACTIONATING EQUIPMENT

Method of Manufacturing a Screen Cylinder and a Screen Cylinder

The present invention relates to a method of manufacturing a screen cylinder, and a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fiber suspensions of the pulp and paper making industry, or other similar suspensions. The present invention relates more particularly to screening or filtering devices of the type comprising a plurality of screen wires ( 10 ) positioned at a small spacing parallel to each other, the screen wires ( 10 ) being fastened into notches in the support elements ( 20 ) by means of shrink fitting the screen wires ( 10 ) into the notches by heating the second rim area ( 26 ) of the support ring ( 20 ) after the screen wires ( 10 ) have been inserted into the notches.

METHOD AND SYSTEM FOR HIGH ALPHA DISSOLVING PULP PRODUCTION

A method for pulp processing used in connection with a pre-hydrolysis kraft process (PHKP) includes adding wood chips or similar material to a reaction vessel, performing pre-hydrolysis, and neutralizing the mixture with a first quantity of white liquor followed by a different solution such as a cold caustic extraction alkaline filtrate optionally enriched with white liquor. The neutralization fluids are replaced with a cooking fluid comprising a hot black liquor and alkaline filtrate, optionally enriched with white liquor. The cooking fluid may have a relatively high effective alkali concentration. The cooked pulp may exhibit very low residual hemicelluloses and a kappa number within an optimal range. 134.-. (canceled)35. A semi-purified pulp derived from plant matter , said semi-purified pulp having a residual hemicelluloses content of less than 3.0 percent as measured in terms of S18 solubility and a kappa number of greater than 8 after cooking but before cold caustic extraction36. The semi-purified pulp of claim 35 , wherein the plant matter is a hardwood.37. The semi-purified pulp of claim 35 , wherein claim 35 , after cold caustic extraction but before bleaching claim 35 , the residual hemicelluloses content is no greater than 1.7 percent as measured in terms of S18 solubility and the kappa number is no less than 9.3842.-. (canceled) This application is a divisional of U.S. patent application Ser. No. 12/789,307, filed May 27, 2010 hereby incorporated by reference as if set forth fully herein.1) Field of the InventionThe field of the invention generally relates to pulp processing and, more specifically, to an improved method and system for treating effluents from cold caustic extraction in connection with a kraft chemical pulping process.2) BackgroundPulp from wood and plant materials has a large number of commercial uses. Although one of the most common uses is in paper manufacturing, pulp can also be used to produce a number of other products including rayon ...

ARAMID NANOFIBER-BASED INSULATION PAPER AND PREPARATION METHOD THEREOF

The present invention provides an aramid nanofiber (ANF)-based insulation paper and a preparation method thereof, and relates to the technical field of composite insulation material. The ANF-based insulation paper provided in the present invention includes ANFs and inorganic insulation materials. The ANFs have a bifurcated geometry and form a three-dimensional network structure, and the inorganic insulation materials are distributed in the three-dimensional network structure. The ANF paper provided in the present invention, with optimal electrical and mechanical properties and excellent insulation and flame-resistance, can replace mica tapes, aramid papers and aramid mica papers on the current market for insulation, and thus the thickness for insulation can be reduced. The present invention provides a method for preparing the ANF-based insulation paper. The preparation method provided in the present invention is simple, has excellent operability, and can be used for continuous preparation, thereby facilitating the realization of industrial production. 1. An aramid nanofiber (ANF)-based insulation paper , comprising ANFs and inorganic insulation materials , wherein the ANFs have a bifurcated geometry and form a three-dimensional network structure , and the inorganic insulation materials are distributed in the three-dimensional network structure.2. The ANF-based insulation paper according to claim 1 , wherein the ANFs comprise para-aramid fibers and/or meta-aramid fibers claim 1 , and have a diameter of 3 nm to 20 nm.3. The ANF-based insulation paper according to claim 1 , wherein the inorganic insulation materials comprise one or more of muscovite claim 1 , phlogopite claim 1 , fluorophlogopite claim 1 , synthetic mica and boron nitride claim 1 , and account for 30% to 70% of the mass of the ANF-based insulation paper.4. A method for preparing the ANF-based insulation paper according to claim 1 , comprising the following steps:(1) mixing a strong alkali, dimethyl ...

SHEET MANUFACTURING APPARATUS

A sheet manufacturing apparatus includes a defibrating unit configured to defibrate stock material in a dry process, a transferring tube configured to transfer the stock material to the defibrating unit, and a magnet unit arranged such that a magnetic surface is exposed an inside of the transferring tube without being protruded inner than an inner surface of the transferring tube. 1. A sheet manufacturing apparatus comprising:a defibrating unit configured to defibrate stock material in a dry process;a transferring tube configured to transfer the stock material to the defibrating unit; anda magnet unit arranged such that a magnetic surface is exposed to an inside of the transferring tube without being protruded inner than an inner surface of the transferring tube.2. The sheet manufacturing apparatus according to claim 1 , whereinthe magnet unit includes a plurality of magnets arranged in a circumferential direction of the transferring tube.3. The sheet manufacturing apparatus according to claim 2 , wherein the plurality of the magnets are arranged such that magnetic poles different in polarity are opposed with each other.4. The sheet manufacturing apparatus according to claim 2 , wherein the plurality of the magnets are arranged such that magnetic poles different in polarity are arranged in the circumferential direction.5. The sheet manufacturing apparatus according to claim 2 , wherein the plurality of the magnets are arranged in a transferring direction of the stock material in the transferring tube.6. The sheet manufacturing apparatus according to claim 1 , wherein the magnet unit is attachable to and detachable from the transferring tube.7. The sheet manufacturing apparatus according to claim 1 , wherein the magnet unit and a portion of the transferring tube is detachable from another portion of the transferring tube.8. The sheet manufacturing apparatus according to claim 1 , wherein the magnetic surface of the magnet unit is flush with the inner surface of the ...

Low Temperature and Efficient Fractionation of Lignocellulosic Biomass Using Recyclable Organic Solid Acids

Methods of fractionating lignocellulosic biomass using hydrotropic sulfonic acids are provided. Also provided are methods of forming lignin particles, furans, sugars, and/or lignocellulosic micro- and nanofibrils from the liquid and solid fractions produced by fractionation process. The fractionation can be carried out at low temperatures with short reaction times. 1. A method for treating lignocellulosic biomass , the method comprising:dispersing a lignocellulosic biomass in an aqueous solution comprising a sulfonic acid, wherein the concentration of the sulfonic acid in the solution is higher than its minimal hydrotrope concentration;maintaining the solution at a temperature and for a time sufficient to dissolve at least 10 wt. % of the lignin in the lignocellulosic biomass; andseparating the solution and the dispersed lignocellulosic biomass into a spent acid solution comprising dissolved lignin and a water-insoluble cellulose-rich solids fraction comprising water-insoluble lignocellulosic solid residues.2. The method of claim 1 , wherein the sulfonic acid in the solution is p-toluenesulfonic acid.3. The method of claim 1 , wherein the temperature is no greater than 100° C. and the time is no greater than 300 minutes.4. The method of claim 3 , wherein the temperature is in the range from 25° C. to 85° C. claim 3 , the time is in the range from 15 minutes to 180 minutes claim 3 , and the concentration of sulfonic acid in the solution is in the range from 15 wt. % to 85 wt. %.5. The method of claim 1 , wherein the temperature is no greater than 25° C. and the time is no greater than 24 hours.6. The method of claim 1 , wherein the lignocellulosic biomass comprises wood chips claim 1 , milled wood claim 1 , commercial technical lignin claim 1 , or a combination thereof.7. The method of claim 1 , wherein the lignocellulosic biomass is a hardwood and at least 10 wt. % of the lignin in the hardwood is dissolved.8. The method of claim 7 , wherein the temperature is in ...

SHEET MANUFACTURING APPARATUS

The sheet manufacturing apparatus includes a defibrating unit configured to defibrate a defibration object in the air, and a sheet forming unit configured to form a sheet by using at least a part of defibrated material that has been defibrated by the defibrating unit. The flow path configured to transfer the defibration object to the defibrating unit has a pipeline unit through which the defibration object passes, an opening having a size through which the defibration object does not pass on a surface of the pipeline unit, and an enclosure unit enclosing the pipeline unit such that the opening is positioned inside. 1. A sheet manufacturing apparatus , comprising:a defibrating unit configured to defibrate a defibration object in the air;a sheet forming unit configured to form a sheet by using at least a part of defibrated material that has been defibrated by the defibrating unit; anda flow path configured to transfer the defibration object to the defibrating unit, the flow path having a pipeline unit through which the defibration object passes, an opening having a size through which the defibration object does not pass on a surface of the pipeline unit, and an enclosure unit enclosing the pipeline unit such that the opening is positioned inside.2. The sheet manufacturing apparatus according to claim 1 , whereinthe opening is an opening formed in a mesh unit having a net-like form.3. The sheet manufacturing apparatus according to claim 2 , whereinthe mesh unit is arranged in an entire circumference in a circumferential direction of the pipeline unit.4. The sheet manufacturing apparatus according to claim 2 , whereinthe mesh unit is arranged in a part in a circumferential direction of the pipeline unit.5. The sheet manufacturing apparatus according to claim 1 , further comprising a crushing unit configured to crush material including fibers claim 1 , whereinthe defibrating unit is configured to defibrate a crushed piece, which has been crushed as the defibration object ...

Process for making partly-hydrolyzed cellulose using compressed cellulosic materials

A method and apparatus for contacting and reacting fine cellulosic material with acid to produce partly-hydrolyzed cellulose, in which the cellulose is compressed to form higher density material, resulting in reduced consumption of acid and increased uniformity of reaction times. Cellulosic material, such as ground wood pulp, is compressed to reduce the interstitial spaces therein. The compressed material is contacted with an acid, such as sulfuric acid, which is allowed to wick into the interstitial spaces and react with the cellulose to produce partly-hydrolyzed cellulose.

PROCESSING DEVICE, SHEET MANUFACTURING APPARATUS, PROCESSING METHOD, AND MANUFACTURING METHOD OF SHEET

Provided is a processing device which includes a fluffing section for fluffing fibers contained in a sheet-like material, the fibers being at least near a surface of the sheet-like material, and a particle supplying section for supplying particles having Mohs hardness of 2 to 5 to the fluffed fibers. In addition, in such processing device, the particle supplying section preferably has an ejecting portion for ejecting the particles. 1. A processing device comprising:a fluffing section that fluffs fibers contained in a sheet-like material, the fibers being at least near a surface of the sheet-like material; anda particle supplying section that supplies particles having Mohs hardness of 2 to 5 to the fluffed fibers.2. The processing device according to claim 1 ,wherein the particle supplying section has an ejecting portion that ejects the particles.3. The processing device according to claim 1 ,wherein the particles have a function of adsorbing alien substances contained in the sheet-like material.4. The processing device according to claim 1 ,wherein the particles have a function of colliding with alien substances contained in the sheet-like material to peel the alien substances off from the fibers.5. The processing device according to claim 3 , further comprising an alien substance-removing section that removes the alien substances together with the particles from the sheet-like material.6. The processing device according to claim 5 , further comprising a defibrating section that defibrates the sheet-like material in an aerial manner after the particles are supplied claim 5 ,wherein the alien substance-removing section removes the alien substances and the particles before the defibration.7. The processing device according to claim 5 , further comprising a defibrating section that defibrates the sheet-like material in an aerial manner after the particles are supplied claim 5 ,wherein the alien substance-removing section removes the alien substances and the particles ...

Method of manufacturing a fibrous product

Methods and apparatus for acoustic fiber fractionation

Methods and apparatus for acoustic fiber fractionation using a plane ultrasonic wave field interacting with water suspended fibers circulating in a channel flow using acoustic radiation forces to separate fibers into two or more fractions based on fiber radius, with applications of the separation concept in the pulp and paper industry. The continuous process relies on the use of a wall-mounted, rectangular cross-section piezoelectric ceramic transducer to selectively deflect flowing fibers as they penetrate the ultrasonic field. The described embodiment uses a transducer frequency of approximately 150 kHz. Depending upon the amount of dissolved gas in water, separation is obtained using a standing or a traveling wave field.

Methods and apparatus for acoustic fiber fractionation

Methods and apparatus for acoustic fiber fractionation using a plane ultrasonic wave field interacting with water suspended fibers circulating in a channel flow using acoustic radiation forces to separate fibers into two or more fractions based on fiber radius, with applications of the separation concept in the pulp and paper industry. The continuous process relies on the use of a wall-mounted, rectangular cross-section piezoelectric ceramic transducer to selectively deflect flowing fibers as they penetrate the ultrasonic field. The described embodiment uses a transducer frequency of approximately 150 kHz. Depending upon the amount of dissolved gas in water, separation is obtained using a standing or a traveling wave field.

Process and apparatus for producing cellulose pulp of improved quality

A process and apparatus for the preparation of improved cellulose pulps is provided, in which defibered pulp is screened for removal of shives, and fibers with low bonding ability are removed in hydrocyclones, and rejects from the hydrocyclones are treated in refiner. In the process a specific combination of characteristics for the hydrocyclones and the volumetric flow is used in order to prepare pulps which give products of improved qualities, such as higher tensile strength, tear strength, light-scattering, surface smoothness, and specially low shive content.

System and a method for inkjet image supporting medium

An image supporting medium includes a raw base paper, and a film forming resin disposed on at least one side of the raw base paper, wherein the raw base paper is formed of fibers from between 0.5 and 3.0 mm in weighted average length. Additionally, the image supporting medium includes from between 1 and 40% filler by weight.

A system and a method for inkjet image supporting medium

一种图像载体介质(100)，其包括原基纸(350)，和设置在该原基纸(350)至少一侧上的成膜树脂(110，130)，其中该原基纸(350)由加权平均长度在0.5和3.0mm之间的纤维形成。另外，图像载体介质(100)包括1－40wt％的填料。

Process and apparatus for the production of cellulose pulps of improved quality

A process and apparatus for the preparation of improved cellulose pulps is provided, in which defibered pulp is screened for removal of shives, and fibers with low bonding ability are removed in hydrocyclones, and rejects from the hydrocyclones are treated in refiner. In the process a specific combination of characteristics for the hydrocyclones and the volumetric flow is used in order to prepare pulps which give products of improved qualities, such as higher tensile strength, tear strength, light-scattering, surface smoothness, and especially low shive content.

Screen and method of manufacture

A plurality of blind openings (e.g. holes or slots) are formed through a first face of a homogeneous metal plate and extend a predetermined distance short of the opposite face. Larger size openings are formed through the first face using the blind openings as pilot openings. The larger size openings extend into the plate short of the terminations of the blind openings. Parallel grooves are then machined in the opposite face of the plate to a depth to reach and thus uncover the terminations of the blind openings in the plate thereby providing passages through the plate. Ridges or bars are thus made between adjacent grooves. The sides of each ridge form each one side of one of the two adjacent grooves. The sides are can be generally at right angles to the plate or may be at an inclination to same A screen cylinder made from a plate according to the invention has an increased effective screening area compared to prior art screens of a similar type.

Method for treating a filtrate produced from a paper fiber suspension of waste paper comprises adding the filtrate partly to the paper fiber suspension at a site lying downstream of a thickening units from which the filtrate is produced

Method for treating a filtrate (F3, F6) produced from a paper fiber suspension (S, S~) of waste paper comprises adding the filtrate partly to the paper fiber suspension at a site (10, 11) lying downstream of a thickening units (3, 6) from which the filtrate is produced. Preferred Features: The filtrate is fractionated before being added so that a material concentrate (13) and a clear filtrate (14) are produced. The material concentrate is added at a site downstream of the thickening units.

Method for removing contaminants from aqueous fiber suspension, particularly waste paper suspension, involves separating fiber suspension into two streams

Das Verfahren dient zur Entfernung von Störstoffen aus einer wässrigen Faserstoffsuspension (S). Ein Teilstrom (A, B) dieser Faserstoffsuspension (S) wird durch Fraktionierung (4) in eine Feinfraktion (F4) und eine Grobfraktion (G4) aufgeteilt. Die Feinfraktion (F4) wird in einer weiteren Fraktionierung (5) ein weiteres Mal geteilt. Dabei entsteht ein Dünnstoff (F5) und ein Dickstoff (D5). Der Dickstoff (D5) wird vorzugsweise zusammen mit der Grobfraktion (G4) dispergiert. Das Verfahren sieht mindestens einen Verfahrensschritt zur Entfernung von Druckfarbenpartikeln, z. B. durch Flotation (8) oder Wäsche vor.

Sheet forming wire

다층 직물로서 형성된 시트 형성 스크린이 설명되고, 직물은 16개의 종방향 스레드의 종방향 스레드 반복부를 갖고, 그 4개의 종방향 스레드(11 내지 14)는 상부 종방향 스레드로서 형성되고, 그 8개의 종방향 스레드(31 내지 38)는 하부 종방향 스레드로서 형성되고, 그 나머지 4개의 종방향 스레드(21 내지 24)는 제 1 직조부를 교대로 완성하는 서로의 옆에 각각 배열된 2개의 종방향 스레드의 2개의 기능성 종방향 스레드 쌍을 형성하고, 2개의 기능성 종방향 스레드 쌍을 형성하는 4개의 종방향 스레드의 적어도 하나는 상부 직물층 및 하부 직물층 모두에서 연장하여 이에 의해 하부 직물층을 상부 직물층에 바인딩한다. A sheet forming screen formed as a multi-layer fabric is described, the fabric having a longitudinal thread repeat of 16 longitudinal threads, the four longitudinal threads 11-14 being formed as an upper longitudinal thread, The directional threads 31 to 38 are formed as a lower longitudinal thread and the remaining four longitudinal threads 21 to 24 comprise two longitudinal threads arranged respectively next to each other alternately completing the first weave At least one of the four longitudinal threads forming two functional longitudinal thread pairs and forming two functional longitudinal thread pairs extends in both the upper fabric layer and the lower fabric layer thereby forming a lower fabric layer on the upper fabric layer Lt; / RTI >

Method and apparatus for recovering fibrous material from a paper/pulp process water stream

An apparatus for the recovery of fibrous material from process water used in the manufacture of pulp and/or paper, including recycle fiber facilities. The apparatus involves hydraulic classification in the first stage to separate contaminants having a greater settling velocity than fiber, from fiber and other light contaminants with the same or slower settling velocity of fiber. The second stage of the apparatus involves classification by screening to separate the fine contaminants from the fiber. The degree of classification in each stage is determined by the end use of the fiber recovered.

Method for producing filtration basket of fibers in aqueous suspension and filtration basket produced by said method

A system and a method for inkjet image supporting medium

본 발명에 따른 이미지 지원 매체(100)는 로 베이스 페이퍼(raw base paper)(350)와, 상기 로 베이스 페이퍼(350)의 적어도 한 면에 배치된 막 형성 수지(film forming resin)(110, 130)를 포함하되, 상기 로 베이스 페이퍼(350)는 1.5 내지 3.0 ㎜의 가중 평균 길이의 섬유로 형성된다. 또한, 이미지 지원 매체(100)는 약 1 내지 40%의 건조 중량(dry weight)의 충진제를 포함한다. The image supporting medium 100 according to the present invention includes a raw base paper 350 and a film forming resin 110 and 130 disposed on at least one side of the raw base paper 350. ), Wherein the raw base paper 350 is formed of a weighted average length of fiber of 1.5 to 3.0 mm. The image support medium 100 also includes a dry weight filler of about 1-40%.

Mesh for forming paper web

FIELD: textiles, paper. SUBSTANCE: mesh for forming a paper web, made in the form of a multilayer fabric, and has a repeat of longitudinal threads of sixteen longitudinal threads, four longitudinal threads of which form the upper longitudinal threads, eight longitudinal threads of which form lower longitudinal threads and the remaining four longitudinal threads form two functional pairs of longitudinal threads. At that each pair is formed of two longitudinal threads adjacent to each other that alternately complete the first weaving and at that at least one of the four longitudinal threads which form two functional pairs of longitudinal threads passes both in the upper woven layer and the lower woven layer and thereby binds the lower woven layer with the upper woven layer. EFFECT: proposed invention provides creation of mesh to form a paper web, having high operational characteristics. 10 cl, 15 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК D21F 1/00 (13) 2 527 375 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2012126053/12, 17.05.2011 (24) Дата начала отсчета срока действия патента: 17.05.2011 (72) Автор(ы): ХЕГЕР Вольфганг (DE) (73) Патентообладатель(и): АНДРИТЦ ТЕКНОЛОДЖИ ЭНД ЭССЕТ МЕНЕДЖМЕНТ ГМБХ (AT) Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.06.2014 Бюл. № 18 R U 21.05.2010 DE 102010017055.0 (45) Опубликовано: 27.08.2014 Бюл. № 24 A1, 19.06.1991. WO 9906632 A1, 11.02.1999 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 21.12.2012 (86) Заявка PCT: EP 2011/057978 (17.05.2011) 2 5 2 7 3 7 5 (56) Список документов, цитированных в отчете о поиске: EP 0069101 A2, 05.01.1983. EP 0432413 2 5 2 7 3 7 5 R U WO 2011/144616 (24.11.2011) C 2 C 2 (87) Публикация заявки PCT: Адрес для переписки: 197101, Санкт-Петербург, а/я 128, "АРСПАТЕНТ", С.В. Новоселовой (54) СЕТКА ДЛЯ ФОРМОВАНИЯ БУМАЖНОГО ПОЛОТНА (57) Реферат: Сетка для формования бумажного полотна, ...

Screening apparatus for paper materials

내용 없음. No content.

PAPER CANVAS FORMING

1. Сетка для формования бумажного полотна, выполненная в виде многослойной ткани с верхним тканым слоем (А), имеющим первое переплетение, и нижним тканым слоем (В), имеющим второе переплетение, причем многослойная ткань имеет раппорт продольных нитей из шестнадцати продольных нитей, из которых четыре продольные нити (11, 12, 13, 14) образуют верхние продольные нити, которые проходят исключительно в верхнем тканом слое и переплетены с проходящими в верхнем тканом слое поперечными нитями (101-120, 101-112) с частичным образованием первого переплетения, из которых восемь продольных нитей (31, 32, 33, 34, 35, 36, 37, 38) образуют нижние продольные нити, которые проходят исключительно в нижнем тканом слое и переплетены с проходящими в нижнем тканом слое поперечными нитями (201-210, 201-208), и из которых остальные четыре продольные нити (21, 22, 23, 24) образуют две функциональные пары (21, 22; 23, 24) продольных нитей, причем каждая пара образована из двух расположенных рядом друг с другом продольных нитей, при этом две продольные нити соответствующей пары продольных нитей поочередно дополняют первое переплетение и при этом одна, или больше, или все четыре продольные нити, которые образуют две функциональные пары продольных нитей, проходят как в верхнем тканом слое, так и в нижнем тканом слое и тем самым связывают нижний тканый слой с верхним тканым слоем.2. Сетка для формования бумажного полотна по п.1, отличающаяся тем, что восемь нижних продольных нитей (31, 32, 33, 34, 35, 36, 37, 38) переплетены с проходящими в нижнем тканом слое поперечными нитями (201-210) с частичным образованием второго переплетения, при этом две продольные нити каждой функциональной пары (21, 22; 23, 24) продол РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК D21F 1/00 (13) 2012 126 053 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2012126053/12, 17.05.2011 (71) Заявитель(и): АНДРИТЦ ТЕКНОЛОДЖИ ЭНД ЭССЕТ МЕНЕДЖМЕНТ ГМБХ (AT) Приоритет(ы ...

Process for preparation of waste paper

A process for producing a fibrous material from which printing inks are removed comprises purifying the fibrous suspension by sorting in a sieve sorting machine or in a hydrocyclone, and removing the inks by flotation or washing. Between purifying and removing, the suspension is passed through a shredding step in a shredding machine at a concn. greater than 15%, and heated to above 85≰C. The process gives the fibrous material suitable for the prodn. of high quality papers.

A method of manufacturing a screen cylinder and a screen cylinder

본 발명은 스크린 실린더 제조 방법, 및 펄프 및 제지 산업의 셀룰로오스 펄프 현탁액, 또는 기타 유사한 현탁액을 스크리닝, 필터링, 분별, 또는 분류하기에 적합한 스크린 실린더에 관한 것이다. 더 상세하게는, 본 발명은 그 사이에 스크리닝 슬롯을 지닌 적어도 다수의 스크린 와이어(10)와 원형 지지 엘리먼트(20)로 형성되는 스크린 실린더에 관한 것으로, 지지 엘리먼트(20)는 그 내에 스크린 와이어(10)의 설치를 위한 개구/그루브를 구비하므로, 지지 엘리먼트(20)중 적어도 하나는 엘리먼트(20)의 개구/그루브에 스크린 와이어(10)를 클램핑하기 위해 그 원형 종방향 축 주위로 방향전환된다. FIELD OF THE INVENTION The present invention relates to methods of making screen cylinders, and screen cylinders suitable for screening, filtering, fractionating, or sorting cellulose pulp suspensions, or other similar suspensions, in the pulp and paper industry. More particularly, the present invention relates to a screen cylinder formed of at least a plurality of screen wires 10 and circular support elements 20 having screening slots therebetween, wherein the support elements 20 have screen wires ( With an opening / groove for the installation of 10), at least one of the support elements 20 is redirected about its circular longitudinal axis to clamp the screen wire 10 to the opening / groove of the element 20. . 스크린 실린더, 지지 엘리먼트, 스크린 와이어, 현탁액 Screen cylinder, support element, screen wire, suspension

Process and an installation for the klimination by the floatation of impurities in the form of solid particles contained in a liquid

The impurities in the form of solid particles contained in a liquid is eliminated in the floating container(1) by the floating. The floating container(1) comprises flow-inlet port and air babbles mixing chamber(8). The fluid flows through the mixing chamber walls which has many through-holes, through which air stream is supplied. Flow velocity is adjusted and air bubbles volume is changed by the distance between two walls.

A system and a method for inkjet image supporting medium

본 발명에 따른 이미지 지원 매체(100)는 로 베이스 페이퍼(raw base paper)(350)와, 상기 로 베이스 페이퍼(350)의 적어도 한 면에 배치된 막 형성 수지(film forming resin)(110, 130)를 포함하되, 상기 로 베이스 페이퍼(350)는 1.5 내지 3.0 ㎜의 무게 평균 길이의 섬유로 형성된다. 또한, 이미지 지원 매체(100)는 약 1 내지 40%의 건조 중량(dry weight)의 충진제를 포함한다.

Patent FR2329797B1

PROCESS FOR SEPARATING ADHESIVE IMPURITIES FROM A SUSPENSION OF MATERIAL AND DEVICE FOR IMPLEMENTING SAME

A process and apparatus for the production of cellulose pulps of improved quality

A process and apparatus for the preparation of improved cellulose pulps is provided, in which defibered pulp is screened for removal of shives, and fibers with low bonding ability are removed in hydrocyclones, and rejects from the hydrocyclones are treated in refiner. In the process a specific combination of characteristics for the hydrocyclones and the volumetric flow is used in order to prepare pulps which give products of improved qualities, such as higher tensile strength, tear strength, light-scattering, surface smoothness, and especially low shive content.

METHOD AND DEVICE FOR SEPARATING IMPURITIES CONTAINED IN FIBROUS SUSPENSIONS

DEVICE FOR SEPARATING NON-DESIRED PARTICLES PRESENT IN A FIBER PASTE

CE DISPOSITIF COMPREND UN CARTER DANS LEQUEL EST MONTE ROTATIF UN ARBRE 10 ET QUI EST CONSTITUE D'UNE PREMIERE CHAMBRE PRESENTANT UNE ENTREE 2 POUR LA PATE ET UNE SORTIE 6 POUR LES PARTICULES NON DESIREES, UNE SECONDE CHAMBRE PRESENTANT UNE SORTIE 4 POUR LA PATE DONT ONT ETE ESSENTIELLEMENT EXTRAITES LES PARTICULES NON DESIREES, ET UNE OUVERTURE MENAGEE ENTRE CES CHAMBRES. LE PROBLEME POSE CONSISTE A EVITER UN ENDOMMAGEMENT PROVOQUE PAR DES PARTICULES NON DESIREES. SUIVANT L'INVENTION, UN DISQUE 13 FIXE SUR L'ARBRE EST MONTE TOURNANT DANS L'OUVERTURE, EN FORMANT UNE FENTE 15 ENTRE SA PERIPHERIE ET LA PERIPHERIE DE L'OUVERTURE, ET UN DISPOSITIF 16, DISPOSE AVANT LE DISQUE, EST MONTE ROTATIF EN MEME TEMPS QUE CE DISQUE ET EST EQUIPE D'ORGANES EN FORME DE DENT QUI TRAVERSENT LA FENTE SUIVANT LA DIRECTION RADIALE. L'INVENTION TROUVE UNE APPLICATION AVANTAGEUSE DANS LA SEPARATION DES PARTICULES NON DESIREES PRESENTES DANS LES PATES DE FIBRES. THIS DEVICE INCLUDES A CASING IN WHICH IS ROTATING A SHAFT 10 AND WHICH CONSISTS OF A FIRST CHAMBER PRESENTING AN INPUT 2 FOR THE DOUGH AND AN OUTPUT 6 FOR UNWANTED PARTICLES, A SECOND CHAMBER PRESENTING AN OUTPUT 4 FOR THE DOUGH OF WHICH HAVE BEEN ESSENTIALLY EXTRACTED UN DESIRED PARTICLES, AND AN OPENING BETWEEN THESE ROOMS. THE PROBLEM IS TO AVOID DAMAGE CAUSED BY UNWANTED PARTICLES. FOLLOWING THE INVENTION, A DISC 13 FIXED ON THE SHAFT IS MOUNTED ROTATING IN THE OPENING, FORMING A SLOT 15 BETWEEN ITS PERIPHERY AND THE OPENING PERIPHERY, AND A DEVICE 16, ARRANGED BEFORE THE DISC, IS ROTATING MOUNTED AT THE SAME TIME AS THIS DISC AND IS EQUIPPED WITH TOOTH-SHAPED ORGANS THROUGH THE SLIT IN THE RADIAL DIRECTION. THE INVENTION FINDS AN ADVANTAGEOUS APPLICATION IN THE SEPARATION OF UNWANTED PARTICLES PRESENTED IN FIBER PASTA.

Apparatus for treatment of old printed papers with short and long fiber separation

Apparatus for treating of old printed papers includes a recycling conduit for the thickening waters of a long fiber fraction upstream of the fractionation apparatus to the pulping and pre-purification apparatus, and a reservoir for the recovery of thickening waters of a short fiber fraction and of thickening/washing waters of the long fiber fraction. This reservoir is fed with clean water for starting the installation and is connected with a second reservoir such that overflow from the first reservoir empties into the second reservoir.

AVLAEGSNANDE AV LATENTA EGENSKAPER.

METHOD AND DEVICE FOR PRODUCING CELLULOSE MASH WITH IMPROVED PROPERTIES

PROCESS AND PLANT FOR PROCESSING OLD PRINTED PAPERS

PROCESS FOR SEPARATING COLLANT IMPURITIES FROM A SUSPENSION OF MATERIAL AND DEVICE FOR IMPLEMENTING SAME

SELON LE PROCEDE, LA MATIERE EST DEPLACEE DANS UN CHAMP DE FORCE D'INERTIE PAR LA GRAVITE OU UNE ACCELERATION CENTRIFUGE EN UN COURANT ET ELLE EST AMENEE EN CONTACT AVEC UNE FACE RECEPTRICE QUI EST DEPLACEE EN COMMUN AVEC LE COURANT A UNE VITESSE SENSIBLEMENT EGALE. LE DISPOSITIF DE MISE EN OEUVRE PEUT COMPRENDRE UN BOITIER A COURANT TOURBILLONNANT AINSI QU'UN ROTOR SE TROUVANT A L'INTERIEUR AVEC LA FACE RECEPTRICE. IL PEUT EGALEMENT COMPRENDRE UN TAMIS DE GUIDAGE 2 DEPLACE LE LONG D'UN CYLINDRE RECEPTEUR 1 OU ENTOURANT CELUI-CI ET SUR LEQUEL UNE COUCHE DE LA MATIERE EST FORMEE PAR UN DISPOSITIF D'AMENEE 6. ON PEUT PREVOIR POUR RECEVOIR LES IMPURETES UNE BANDE 17, PAR EXEMPLE UNE BANDE TAMISEUSE. APPLICATION A LA TECHNIQUE DE PURIFICATION DES MATIERES EN SUSPENSION, EN PARTICULIER POUR LA FABRICATION DU PAPIER. DEPENDING ON THE PROCESS, THE MATERIAL IS MOVED IN A FIELD OF INERTIAL FORCE BY GRAVITY OR A CENTRIFUGAL ACCELERATION IN A CURRENT AND IT IS BROUGHT INTO CONTACT WITH A RECEIVING FACE WHICH IS MOVED IN COMMON WITH THE CURRENT AT A SENSITIVELY EQUAL SPEED. THE IMPLEMENTATION DEVICE MAY INCLUDE A SWIRLING CURRENT BOX AS WELL AS A ROTOR LOCATED INSIDE WITH THE RECEIVING FACE. IT MAY ALSO INCLUDE A GUIDANCE SIEVE 2 MOVED ALONG OR SURROUNDING A RECEIVING CYLINDER 1 AND ON WHICH A LAYER OF THE MATERIAL IS FORMED BY A FEEDING DEVICE 6. A BAND MAY BE PROVIDED TO RECEIVE THE IMPURITIES. 17, FOR EXAMPLE A SIEVE BELT. APPLICATION TO THE PURIFICATION TECHNIQUE OF SUSPENSION MATERIALS, IN PARTICULAR FOR THE MANUFACTURE OF PAPER.

APPARATUS FOR DISTRIBUTING A CELLULOSIC FIBROUS PASTE

Process for treating fiber suspensions for the formation of aggregates, apparatus implementing this process and products obtained

APPARATUS FOR CLEANING SUSPENSIONS OF FIBROUS MATERIALS OF LOW CONCENTRATION OF MATERIALS

Method and arrangement for controlling a multi-phase screening apparatus

The invention relates to a method for controlling a multi-step screening apparatus (1), the method comprising controlling other accept, reject and dilution flows in relation to the flow measured in the accept channel (7a) of the first screening step (3a). Thus a simpler control unit (9) can be used and accept of higher quality can be obtained than before. The invention further relates to an apparatus for controlling a multi-step screening apparatus (1), said apparatus comprising a control unit (9) arranged to measure the flows of all accept, reject and dilution water channels (7a-7c, 5a, 5b, 11a, 11b) and to adjust the flow of the other channels on the basis of the flow of the accept channel of the first step.

Fibre pulp cleaning

At least part of the overflow from the second mesh filter passes through a grinder or refiner for further processing. The suspension is then returned to the main mass of suspension, at least in part, at the overflow of the first and/or second mesh filter. The process gives further reduction to the coarse fibres and other matter in the suspension.

PROCESS AND PLANT FOR PROCESSING OLD PRINTED PAPERS

Procédé de traitement de vieux papiers comportant des phases de pulpage, pré-épuration, désencrage, par flottation, épuration fine et éventuellement blanchiment, caractérisé en ce qu'il comporte un fractionnement 3 de la pâte en fibres longues 5 et fibres courtes 4, réalisé en amont du désencrage 6, seule la fraction à fibres courtes étant envoyée dans les appareils de désencrage, la fraction à fibres longues étant envoyée au moins à des appareils d'épuration-fine 11 et d'épaississement-lavage 12 avec retour 19 des eaux d'épaississement 16, 17 en amont du fractionnement 3. (CF DESSIN DANS BOPI) Process for the treatment of waste paper comprising pulping, pre-purification, deinking, flotation, fine purification and optionally bleaching phases, characterized in that it comprises a fractionation 3 of the pulp into long fibers 5 and short fibers 4, carried out upstream of deinking 6, only the short-fiber fraction being sent to the de-inking devices, the long-fiber fraction being sent at least to fine-cleaning 11 and thickening-washing 12 devices with water return 19 thickening 16, 17 upstream of fractionation 3. (CF DRAWING IN BOPI)

SCRUBBER-SORTER FOR THE SEPARATION OF FIBER SUSPENSIONS

L'invention se rapporte à un épurateur-trieur pour la séparation de suspensions de fibres. L'épurateur-trieur comprend un panier perforé fixe 32, et un rotor 40 disposé concentriquement dans ce panier, une zone d'admission 80, des suspensions de fibres et une zone de sortie 62 de la matière rejetée. En vue d'assurer la dilution de la matière rejetée, l'appareil comporte, au moins à proximité de la zone de sortie 62, des dispositifs 54, avec ouverture inférieure du rotor 40, pour l'amenée de la suspension de fibres. Applications : machines pour la fabrication du papier. The invention relates to a scrubber-sorter for the separation of fiber suspensions. The scrubber-sorter comprises a fixed perforated basket 32, and a rotor 40 disposed concentrically in this basket, an inlet zone 80, fiber suspensions and an outlet zone 62 for the rejected material. In order to ensure the dilution of the rejected material, the apparatus comprises, at least near the exit zone 62, devices 54, with lower opening of the rotor 40, for the supply of the suspension of fibers. Applications: machines for papermaking.

Screen device

A screen device includes a screen dividing a tank into a first chamber and a second chamber for sorting a foreign material in a papermaking material, a first papermaking material supply passage for supplying the papermaking material to the first chamber from the upper side, and a second papermaking material supply passage for supplying the papermaking material to the first chamber from the lower side. The papermaking material passing through the screen is ejected from a middle area of the screen. The screen device also includes an agitating member located inside the first chamber for agitating the papermaking material, and a foreign material outlet passage communicating with the first chamber through a foreign material outlet provided on a side face of the screen. Therefore, the screen device can improve the sorting effect between the foreign material and a good-quality fiber in the papermaking material.

Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse

A method for pulp processing includes a cold caustic extraction stage in which the spent cold caustic solution and the spent liquid used to wash the extracted pulp are concentrated by an evaporation system. The concentrated liquid can be used as part of the neutralization and cooking liquor in the pulp process, leading to increased efficiency without significant reduction in pulp quality. Highly concentrated filtrate from the cold caustic extraction stage may help reduce hemicellulose deposition on wood fiber during the cooking step.

A method of manufacturing a screen cylinder and a screen cylinder

Recovery of paper fiber and other by-products from municipal refuse

A screening device

PCT No. PCT/SE95/01340 Sec. 371 Date May 22, 1997 Sec. 102(e) Date May 22, 1997 PCT Filed Nov. 13, 1995 PCT Pub. No. WO96/17998 PCT Pub. Date Jun. 13, 1996Apparatus for separating light impurities from a pulp suspension is disclosed. The apparatus includes a housing mounted on a fractionation device and symmetrically disposed with respect to the axis of rotation of the casing of the fractionation device, a passageway extending between the housing and the casing, and in which the top of the housing includes an outlet for the light impurities and a dilution liquid inlet for injecting dilution liquid tangentially into the housing.

Method of manufacturing a screen cylinder and a screen cylinder

The present invention relates to a method of manufacturing a screen cylinder, and a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp or fiber suspensions of the pulp and paper making industry, or other similar suspensions. The present invention relates more particularly to screening or filtering devices of the type comprising a plurality of screen wires ( 10 ) positioned at a small spacing parallel to each other, the screen wires ( 10 ) being fastened into notches in the support elements ( 20 ) by means of shrink fitting the screen wires ( 10 ) into the notches by heating the second rim area ( 26 ) of the support ring ( 20 ) after the screen wires ( 10 ) have been inserted into the notches.

Processing apparatus, sheet manufacturing apparatus, processing method, and sheet manufacturing method

本发明提供一种在薄片状材料中含有异物的情况下能够充分地去除该异物的处理装置、薄片制造装置、处理方法以及薄片的制造方法。本发明的处理装置的特征在于，具备：起毛部，其使含有纤维的薄片状材料的至少处于表面附近的所述纤维起毛；粒子供给部，其向起毛了的所述纤维供给莫氏硬度为2以上且5以下的粒子。此外，在该处理装置中，优选为，所述粒子供给部具有喷射所述粒子的喷射部。

Sheet manufacturing apparatus and sheet manufacturing method

Screen apparatus

This invention provides a screen apparatus having an enhanced capacity for separating foreign matter from fibers of an acceptable quality in paper-making material. The screen apparatus S comprises: a sealed casing 1 having a paper-making material supply port la, a refined paper-making material discharge port lb positioned above the paper-making material supply port la and a foreign matter discharge port 1c positioned above the refined paper-making material discharge port 1b; a screen 2 for dividing the interior of the sealed casing 1 into a first chamber 1A and a second chamber 1B and for separating foreign matter in the paper-making material, the screen being of cylindrical shape with end portions both open, the screen having circular holes or slit-like openings on a side face thereof and which screen is stood within the sealed casing 1 in such a way that a direction of height thereof faces a vertical direction; a rotor 7 disposed inside the screen 2 within the first chamber 1A and having an agitating member 7a for agitating the paper-making material within the sealed casing 1; and a water supply passage 10 mounted onto the sealed casing 1 so that a water spouting port 10a opposes the top end face 7T of the rotor 7.

Method and arrangement for the treatment of a fiber suspension

An apparatus and method for screening pulp after bleaching. The apparatus includes a first bleaching tower for bleaching pulp, a screener for screening and separating the bleached pulp into a first accept fraction and a first reject fraction such that the first accept fraction is supplied to a post-screening treatment device without further treatment by a separate thickener. The apparatus further includes a vortex cleaner for separating the first reject fraction into a second accept fraction and a second reject fraction such that the second accept fraction is supplied to the screener or the post-screening treatment device without a separate thickener.

Manufacture method and the screen drum of screen drum

本发明涉及一种制造筛筒的方法，和特别地适合于筛滤，过滤、筛分或分拣纸浆和造纸业的纤维素纸浆或纤维悬浮液、或其它类似悬浮液的筛筒。本发明更特定而言涉及包括多个筛丝线(10)的类型的筛滤或过滤装置，多个筛丝线(10)定位成以较小间距彼此平行，在已将筛丝线(20)上均匀地而且一致地插入于缺口内之后，通过加热所述支承环(20)的第二边沿区(26)，借助于将筛丝线(10)收缩配合到缺口内，从而将筛丝线(10)紧固到支承元件(20)中的缺口内。

Strainer basket for filtering fiber suspensions and process for its preparation

Patent FR2344670B1

Device for the separation of impurities in fiber suspensions

DEVICE FOR DIVIDING A FIBER SUSPENSION.

Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp)

There is a need for a cheaper method of producing bleached TMP and CTMP without impairing the properties of the pulp. This is made possible by the present invention, which relates to a method of producing said pulps in which finely divided lignocellulosic material is defibrated after pretreatment and the resultant pulp is bleached in the form of a suspension with bleaching agent that increases the anionic charge of the pulp fibres, whereafter the pulp suspension is cleaned and then possibly further treated, for instance bleached, characterised in that the defibration is effected with the aid of a) a refiner that has counter-rotating refining discs while using an extra high temperature (HTDD), or b) a refiner that has a single rotating refining disc(s) having a single refining zone or two parallel refining zones, while using an extra high temperature and while rotating the disc(s) at an extra high speed (RTS), and in that the cleaning treatment comprises first screeming the pulp suspension and them hydrocyclone cleaning said suspension, wherewith the reject obtained with each cleaning process is treated individually and the treated reject is returned to the advancing pulp suspension.

Apparatus for dividing a suspension of fibrous cellulose pulp

Process and apparatus for controlling the purification and yield of fibers from a fiber suspension

A process and apparatus for controlling separators used to separate suspensions of fibers is disclosed. In a system in which at least one separator is used to separate a fiber suspension into fractions containing components of the feed suspension, sensors are used to generate information relating to a characteristic of at least one of the formed fractions. The information so generated is then used to control the operational parameters of the separators. In further embodiments of the invention, sensors provide information to controllers, which in turn control the separators.

Method and device for the recovery of paper, metals and plastics from packaging waste

METHOD AND DEVICE FOR PRODUCING PAPER PULP, METALLIC SUBSTANCES AND PLASTICS FROM COMPOSITE PAPER WASTE

Procédé et dispositif de récupération des composants de déchets de papier composite garni de couches de métal et de matière plastique. Un liquide chargé des déchets désagrégés et déchiquetés passe successivement avec recyclage partiel dans plusieurs hydrocyclones 7, 18, 19, puis dans un séparateur à crible 10 dont le refus est constitué par une majeure partie de pâte à papier et de matière plastique. Le métal est extrait par l'orifice de sousverse 15 du cyclone 19. Application à la récupération des déchets de papiers d'emballage. Method and device for recovering components from waste composite paper lined with layers of metal and plastic. A liquid loaded with disintegrated and shredded waste passes successively with partial recycling in several hydrocyclones 7, 18, 19, then in a screen separator 10, the residue of which consists of a major part of paper pulp and plastic material. The metal is extracted through the underflow orifice 15 of the cyclone 19. Application to the recovery of packaging paper waste.

DERIVATIVE CIRCUIT SYSTEM FOR PROCESSING OLD PAPER

Apparatus and method for production of pulp

The present invention relates to an apparatus for separating steam from a mixture of steam and fibres, comprising an elongated feeding compartment (12) having an inlet and feeding means (10) for feeding a mixture through said inlet. The feeding means comprises a tubular section (18) which is curved such that the mixture in the tubular section (18) is separated during influence of centrifugal forces in a heavy steam-less fraction of fibres in a outer layer (20) and in a light fibre-free fraction of steam in a inner layer (22). The tubular section is arranged in such a way that heavy fraction of fibres is fed through the inlet peripherally (P). The separated light fraction of steam is fed against the centre (C) of the compartment and removed through an outlet (23,24) of the apparatus. The present invention also relates to a feeding means (10) for use in an apparatus as defined above and a method.

Improved strainer for cleaning fibrous suspensions

본 발명은 섬유질 현탁액을 위한 여과기(1)에 관한 것으로, 이는 용기(2)와, 이 용기(2) 안쪽의 여과용 바스켓(3;21,22) 및 회전 구동하게 하는 구동수단(7)과 연결된 상기 여과용 바스켓(3,21,22) 내의 로터(4;15,16)를 포함한다. 용기(2)에는 거절된 현탁액의 배수챔버(35)와, 여과된 현탁액의 전달챔버(25,27) 및 상기 용기(2)의 상부에 배치된 수집몸체(30)가 있다. 수집몸체(30)는 하부 수집기(37)와 상부 수집기(38)를 포함하고, 양 수집기는 잘려진 원추모양의 반경방향 형상을 가지며 긴 베이스(37a,38a)를 통해 서로 연결되어 있다. 하부 수집기(37)는 이의 짧은 베이스(37b)가 상기 여과용 바스켓(3;21,22)에 접하여 있고 상부 수집기(38)는 이의 짧은 베이스(38b)가 위쪽으로 접하여 있다.

Magnetic removal of"stickies"from waste papers

An improved process is disclosed for removing "stickies" from waste paper which contains hot-melt and pressure-sensitive adhesives and lattices to produce high quality (high brightness, little to no dirt content) pulp with little or no fiber loss. The process involves attachment of sticky particles in the waste paper pulp to a magnetic carrier material with the help of an agglomeration agent followed by removal of the attached sticky particles by magnetic separation. The magnetic treatment preferably is conducted at ambient or greater temperature, at neutral to alkaline pH and at a low pulp consistency. Agglomeration and magnetite addition, followed by exposure of the repulped waste paper to a magnetic field provides near complete sticky removal over exposure to the magnetic field without such pre-treatment.

Process for manufacturing a screen cylinder and a screen cylinder

Process to remove metal particles from suspension of paper fibre by fixed magnetic cylinder surrounded by rotating helical blade and outer tube

In a papermaking process metallic foreign objects are removed from a fibrous suspension (S) by magnetic (1) action. The incoming suspension passes along a tube containing a rotating cylindrical magnet that is surrounded by a fixed helical blade, or vice versa. Metal particles are attracted to the cylinder and are pushed by the helical blade towards trap (4). On passing beyond the zone of magnetic influence, metal particles are released and fall into a trap (4). The relative motion between the magnet and helical blade is driven by a motor. The assembly is operated continuously or intermittently. During release of the magnetic components, the tube is back-flushed. During normal operation the suspension speed is less than 1 m/s with respect to the magnet. The magnetic separator extends into the base of the suspension reservoir.

Method of removing high density stickies from secondary papermaking fibers

A hybrid method for processing papermaking fibers to remove high density stickies typically includes utilizing a multistage array of forward cleaners coupled with a flotation cell which increases overall efficiency of the system. In a preferred embodiment, a first rejects aqueous stream from a first stage bank of centrifugal cleaners is treated in a flotation cell before being fed to a second stage bank of centrifugal cleaners. With the improved technique, the accepts from the first stage bank of centrifugal cleaners may be combined with the accepts from the second stage bank of centrifugal cleaners and fed forward to a thickening device, for example. The technique is also suitably employed for removing stickies from material which has already been screened with a fine screen.

DEVICE FOR THE PURIFICATION OF FIBROUS MASS SUSPENSIONS

Purification process for partly-hydrolyzed cellulose

A method of recovering purified partly-hydrolyzed cellulose particles from a composition comprising agglomerated partly-hydrolyzed cellulose particles and an acid, using electrodialysis. The invention addresses the problem of reducing the acid to very low levels while avoiding the high capital and operating costs, high water usage and large filtration surface area or dilution time requirements of the prior art processes. Following dilution, concentration by centrifuging or settling, and/or dialysis of the composition, the composition is treated in an electrodialysis cell to remove ions, such as free sulfate from sulfuric acid. The method may include having an anion exchange resin in the feed compartment of the electrodialysis cell, adding a base to the receiving solution in the electrodialysis cell, and a second step of electrodialysis of the purified partly-hydrolyzed cellulose particles.

Apparatus for separating waste from cellulose fibres in paper recycling processes

A contaminate separation apparatus for use in separating contaminant materials from cellulose and/or paper fibres in a paper recycling process includes a reservoir for receiving a waste paper slurry therein. The reservoir is provided with an inlet opening for the input of the slurry, one or more fibre discharge outlets or passages, and at least one waste outlet positioned vertically above the fibre discharge outlet opening. An agitator provided in a lower portion of the reservoir generates differential flow currents within the reservoir, to selectively divert plastics, waxes, adhesives and/or other sticky waste materials outwardly towards the waste outlet, while providing a flow of suspended paper and/or cellulose fibres to one or more of the fibre discharge outlets.

Sieve

Method for manufacturing filtering baskets of fibres in aqueous suspension and a filtering basket manufactured with said method

본 발명은 수성 현탁액에서 섬유질을 여과하는 바스켓의 제작방법 및 상기 제작방법으로 제작된 여과용 바스켓에 관한 것으로, 주요 길이방향으로 전개된 다수의 형상바아(3,4,20)를 구비하는 단계와 길이방향의 중심축(X)을 갖는 튜브형 구조체(9)를 형성하도록 상호 수렴평면(convergent plane)을 갖도록 인접한 상기 형상바아(3,4,20)의 접촉면(5,6,7,8,24,25)을 구비한 상기 형상바아(3,4,20)를 서로 근접하게 나란히 배치하는 단계를 포함한다. 여과용 바스켓의 제작방법은 길이방향의 축(X)에 따르는 2개 이상의 동심축과 서로 이격된 환형 부재(10)로 형상바아(3,4,20)를 외부에서 에워싸는 단계를 추가로 포함한다. The present invention relates to a method for producing a basket for filtering fibers in an aqueous suspension, and to a basket for filtration produced by the method, comprising: providing a plurality of shape bars (3, 4, 20) extending in the main longitudinal direction; Contact surfaces 5,6,7,8,24 of adjacent shape bars 3,4,20 having mutually convergent planes to form a tubular structure 9 having a longitudinal central axis X. And arranging the shape bars (3, 4, 20) having the (25) in close proximity to each other. The fabrication method of the filtration basket further includes externally enclosing the shape bars 3, 4, 20 with two or more concentric axes along the longitudinal axis X and the annular member 10 spaced from each other. .

Method and device for separating material flows

PROCESS FOR CLEANING A FIBER SUSPENSION

Method and arrangement for controlling a multiphase screen device

Refined cellulose fiber composition

The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.

Method and means for treating pulp

Method and means is disclosed for treating pulp, in particular fiber suspensions of the pulp and paper industry, and more specifically, for improvement of pulp mill screening plants, to make their operation more effective and to reduce the need for equipment to reduce the investment costs etc. In the known screening process it is usually desirable to increase the pulpconsistency after the screening to a range of 10 to 15% for storing or after-treatment. It is also desirable to handle rejects by either refining or some other method, but usually at consistency which is higher than that of screening. In other words, the pulp flows always have to be thickened after screening. The present invention comprises a method and means for screening pulp in a pressurized, closed space by means of screens in a consistency range of 1 to 5% and by means of centrifugal cleaners in a consistency below 1%. The various pulp screening and/or cleaning stages are effected in a pressurized state in a closed space in the screening plant. Access of air to the treated pulp is prevented by carrying out the thickening stages in a pressurized state, at the initial pressure corresponding to that of the preceding screening and/or cleaning stage.

Classifying unit for fibrous suspensions

A classifying apparatus is disclosed for use in separation of different portions of fibrious suspensions such as waste papers stock coming from a pulper. The apparatus is a unit comprising a vortex cleaner combined with a pressure screen. It includes a cylindric rotor whose circumferential portion carries agitating rods for the screen, the bottom of the rotor being provided with means for intensifying the motion of the stock fed into the vortex cleaner portion of the apparatus. The cylindric rotor defines a comparatively narrow gap between the rotor and the screen cage.

Screen cylinder manufacturing method and screen cylinder

Apparatus for sorting fibrous stock suspensions

An apparatus for sorting a fibrous suspension for removing both heavy weight and light weight particulate impurities is disclosed. An antechamber is positioned above a main chamber. Fibrous stock suspension is inletted tangentially to the antechamber and moves down to the main chamber. An annular rotor in the main chamber creates a vortex of the fibrous stock suspension, which drives the heavier particulate impurities to the side wall of the main chamber and moves the lighter weight impurities toward the center of the vortex. The heavier weight impurities fall to the bottom of the main chamber from which they are removed. The lighter weight impurities are removed by a drainage line extending toward the center of the antechamber. Above the rotor is a strainer and the rotor cooperates with the strainer to drive purified fluid suspension to an annular outlet chamber surrounding the bottom of the antechamber and from there into an outlet line.

Refined cellulose fiber composition

The present invention relates to a refined cellulose fiber composition useful as a strength enhancing agent for paper and paperboard, wherein the refined cellulose fiber composition has a Schopper-Riegler (SR) number in the range of 80-98 as determined by standard ISO 5267-1, and wherein the refined cellulose fiber composition has a content of fibers having a length >0.2 mm of at least 12 million fibers per gram based on dry weight. The invention further relates to a method for preparing the refined cellulose fiber composition and to pulp paper and paperboard comprising the refined cellulose fiber composition.

Method and apparatus for screening fibrous suspensions

A fiber suspension, such as in a pulp mill, is treated in a manner which minimizes both the investment and the operating costs associated with a screening plant. A single pump has an outlet connected to a knotter and primary and secondary screening stages so that the pump provides substantially the sole motive force to the pulp moving it through the knotter and screening stages. The knotter and screening stages are provided in a common housing with the knotter vertically above the screening stages, and the screening stages one above the other. A single motor may be provided to rotate rotatable elements associated with the knotter and screening stages. The knotter may be connected to a knot washer external of the housing by a valued conduit less than two meters in length, and the secondary screening stage can be connected to a tertiary screening stage exterior of the housing by a valued conduit less than two meters long. Rejects from the knot washer and secondary screening stage may be recycled to the pulp inlet, and dilution water may be introduced where necessary.

Method and apparatus for providing distributed hybrid peer to peer network

본 발명은 이동 에이전트 기반의 분산 혼합형 피투피 네트워크를 제공하는 방법 및 장치에 관한 것이다. 상기 방법은 사용자 단말로부터 VSP 리스트 요청 신호를 수신하는 단계, VSP 리스트 요청 신호에 상응하여 VSP 리스트를 추출하는 단계, VSP 리스트를 사용자 단말로 전송하는 단계- 여기서 사용자 단말은 VSP 리스트를 이용하여 자생 수퍼 피어로 피어 등록 요청 신호를 전송하고, 피어 등록 요청 신호에 응답하여 피어 등록 거부 신호를 수신함-, 사용자 단말로부터 VSP 등록 요청 신호를 수신하는 단계-여기서 VSP 등록 요청 신호는 사용자 단말이 피어 등록 거부 신호에 상응하여 VSP의 역할을 수행하고 자신을 일반 피어로 등록하기 위한 것임- 및 사용자 단말을 새로운 VSP로 등록하는 단계를 포함하며, VSP 리스트를 기반으로 이동 에이전트를 사용하여 검색하는 것을 특징으로 한다. The present invention relates to a method and apparatus for providing a mobile agent-based distributed hybrid peer-to-peer network. The method includes the steps of receiving a VSP list request signal from a user terminal, extracting a VSP list corresponding to the VSP list request signal, and transmitting a VSP list to the user terminal, wherein the user terminal uses the VSP list to autonomously grow. Transmitting a peer registration request signal to the peer, and receiving a peer registration rejection signal in response to the peer registration request signal; receiving a VSP registration request signal from the user terminal, wherein the VSP registration request signal is a user terminal peer rejection signal; Corresponding to acting as a VSP and registering itself as a general peer, and registering the user terminal as a new VSP, and searching using a mobile agent based on the VSP list. P2P, 루트 수퍼 피어, 자생 수퍼 피어, 일반 피어 P2P, root super peer, native super peer, normal peer

MEDICAL EQUIPMENT SUSPENSION TRYCKSAOLL FOER FIBERSUSPENSIONER

METHOD AND DEVICE FOR GENERATING CELLULOSE BREAT WITH A VERIFIED QUALITY

Bei einem Verfahren und einer Vorrichtung wird eine Zellulosesuspension niedriger Konsistenz, wobei deren Konsistenz und Durchfluszrate bekannt sind, zur Saugzone einer Hauptpumpe (4) geleitet, an deren Druckseite in Reihe eine erste Multi-Hydrozyklon-Einheit (6) zur Beseitigung schwerer Verunreinigungen, eine zweite Multi-Hydrozyklon-Einheit (7) zur Beseitigung leichter Verunreinigungen und ein Stoffauflauf (8) fuer eine Entwaesserungs- oder Papiermaschine (9) angeschlossen sind. Dies ermoeglicht einerseits eine nicht durch Zwischenlagerung unterbrochene Reinigung und Zellstoff- bzw. Papierproduktion und andererseits eine Eindickung der Zellstoffmasse in der zweiten Multi-Hydrozyklon-Einheit, ausgehend von einer fuer die Reinigung geeigneter Konsistenz zu einer hoeheren, fuer den Auftrag auf ein Langsieb oder dergleichen geeigneten Konsistenz.

Stock selection equipment

FOERFARANDE FOER RENING AV AVFALLSPAPPER