SE504271C2 - Screw press with separate washing zone for dewatering and washing of fiber suspensions - Google Patents

Screw press with separate washing zone for dewatering and washing of fiber suspensions

Info

Publication number
SE504271C2
SE504271C2 SE9503383A SE9503383A SE504271C2 SE 504271 C2 SE504271 C2 SE 504271C2 SE 9503383 A SE9503383 A SE 9503383A SE 9503383 A SE9503383 A SE 9503383A SE 504271 C2 SE504271 C2 SE 504271C2
Authority
SE
Sweden
Prior art keywords
zone
screw
section
dewatering
washing
Prior art date
Application number
SE9503383A
Other languages
Swedish (sv)
Other versions
SE9503383D0 (en
SE9503383L (en
Inventor
Lennart Berggren
Original Assignee
Lennart Berggren
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lennart Berggren filed Critical Lennart Berggren
Priority to SE9503383A priority Critical patent/SE504271C2/en
Publication of SE9503383D0 publication Critical patent/SE9503383D0/en
Priority to CA002230115A priority patent/CA2230115A1/en
Priority to EP96932919A priority patent/EP0853699A1/en
Priority to JP51418897A priority patent/JP2001503479A/en
Priority to PCT/SE1996/001226 priority patent/WO1997013026A1/en
Publication of SE9503383L publication Critical patent/SE9503383L/en
Publication of SE504271C2 publication Critical patent/SE504271C2/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
    • B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/78—Handling the filter cake in the filter for purposes other than for regenerating for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/80—Handling the filter cake in the filter for purposes other than for regenerating for drying
    • B01D29/82—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression
    • B01D29/828—Handling the filter cake in the filter for purposes other than for regenerating for drying by compression using screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/121—Screw constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/02—Filtering elements having a conical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/282—Filtering elements with a horizontal rotation or symmetry axis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

A feed and dewatering device for dewatering/squeezing/washing of fiber pulp etc. comprising one section (1) for inlet, one section (2) for dewatering/squeezing, one section (3) for adding and mixing of washing liquid, one section (4) for the final dewatering/squeezing and one section (5) for outlet of treated material. The dewatering in zone (2) exists between a converging screen basket and a diverging screw core and dewatering in zone (4) between a cylindrical screen basket and a diverging screw core.

Description

504 271 2 Nackdelar med användning av dagens pressar för tvättändamål är att här användes företrädesvis valspressar. Dessa är mycket dyrbara maski- ner, de ger höga belastningar på fundament, de är känsliga för varia- tioner på inkommande massans koncentration och freenes och de be- gränsar möjligheterna att gå över 4 procent i ingående massakoncen- tration. 504 271 2 Disadvantages of using today's presses for washing purposes is that roller presses are preferably used here. These are very expensive machines, they give high loads on foundations, they are sensitive to variations in the incoming mass concentration and freenes and they limit the possibilities of exceeding 4 percent in incoming mass concentration.

En skruvpress vilken maskin i dag mycket användes för enbart kom- pression/pressning av fibermassa är en enkel och billig maskin.A screw press, which machine is widely used today for only compression / pressing of pulp, is a simple and inexpensive machine.

Problemet är att den inte finns någon effektiv konstruktion hos en skruvpress med separat tvättzon för tillförsel av tvättvätska för att därmed tvättprocessen skall effektiviseras.The problem is that there is no efficient construction of a screw press with a separate washing zone for supplying washing liquid in order to thereby make the washing process more efficient.

Föreliggande uppfinning. Ändamålet med uppfinningen är att åstadkomma en skruvtvättpress där skruvpressens fördelar i sig utnyttjas samtidigt som den förses med en effektiv tvättzon.The present invention. The object of the invention is to provide a screw washing press where the advantages of the screw press itself are utilized at the same time as it is provided with an efficient washing zone.

Inkommande massa med koncentrationer vanligen 4-10 procent avvatt- ; nas/komprimeras i en första avvattningszon till ca 12-20 procent. ' Härefter tillsättes tvättvätska i en zon där fibermassan tillåtes expandera. Ingen avvattning sker i tvättzonen men däremot en effektiv omröring för fördelning av tvättvätska i fibermassan. Efter tvätt- zonen komprimeras åter fibermassan mellan en rak silcylinder och divergerande skruvkärna. Avvattning i slutdelen av pressen sker så- väl utåt genom silröret som inåt genom en perforerad skruvkärna.Incoming pulp with concentrations usually 4-10 percent dewatering; nas / compressed in a first drainage zone to about 12-20 percent. Then washing liquid is added in a zone where the fibrous mass is allowed to expand. No dewatering takes place in the washing zone, but on the other hand an efficient stirring for distribution of washing liquid in the fibrous mass. After the washing zone, the fibrous mass is compressed again between a straight screen cylinder and a diverging screw core. Dewatering in the end part of the press takes place both outwards through the screen pipe and inwards through a perforated screw core.

Mothåll vid utloppet är till för reglering av sluttorrhalten på den pressade massan.Resistance at the outlet is for regulating the final dry content of the pressed mass.

Beskrivning av ritning.Description of drawing.

Fig. 1 visar en sektion genom en skruvtvättpress enligt uppfinningen.Fig. 1 shows a section through a screw washing press according to the invention.

Beskrivning av utföringsexempel.Description of embodiments.

Skruvtvättpress enligt fig. 1 innefattar en inloppssektion 1 för massan, en första avvattningszon 2, en tvättsektion 3 för utspäd- ning/tillförsel av tvättvätska, en slutpresszon 4 samt en utloppszon 5 för den tvättade och pressade massan. l trågformiga ytterhöljet 6 avgränsas sektion 1 från sektion 2 med- elst mellanvägg 7, sektion 2 från sektionsmedelst mellanvägg 8, sek- tion 3 från sektion 4 medelst mellanvägg 18 samt sektion 4 från sektion 5 medelst mellanvägg 9. 3 504 271 En presskruv med divergerande skruvkärna 10 löper genom hela kon- struktionen och dess axeltappar 11 och 12 är lagrade i konventio- nella rullningslager 13 och 14 (ej visade). Pâ tapp 12 är anbringad. en tappväxelmotor för drift av skruven.Screw washing press according to Fig. 1 comprises an inlet section 1 for the pulp, a first drainage zone 2, a washing section 3 for dilution / supply of washing liquid, a final pressing zone 4 and an outlet zone 5 for the washed and pressed pulp. In the trough-shaped outer casing 6, section 1 is delimited from section 2 by means of partition wall 7, section 2 from section by means of partition wall 8, section 3 from section 4 by means of partition wall 18 and section 4 from section 5 by means of partition wall 9. 3 504 271 A press screw with diverging screw core 10 runs throughout the structure and its shaft journals 11 and 12 are mounted in conventional rolling bearings 13 and 14 (not shown). On pin 12 is mounted. a pin gear motor for operating the screw.

I zon 2 är konvergerande skruvgänga 15 gmsluten av silcylinder 16.In zone 2, converging screw threads 15 are closed by screen cylinder 16.

I zon 3 är på skruvgängan anbringade pinnar 17 för effektiv inbland- ning i fibermassan av genom rör 41 och silhål 40 tillförd tvättvät- ska 39. I zon 4 är utvändigt cylindrisk skruvgänga 19 omsluten av silmantel 20. Vid bakre delen av silmantel 20, zon 37, är denna operforerad. I främre delen av presskruv 10 är även skruvkärnan per- forerad 22 för dränering inåt av utpressad vätska. Vid massautlopp 23 från skruven är anbringade mothål 24, vilka är axiellt manövrer- bara. Den pressade massan faller ned genom utlopp 25.In zone 3, pins 17 are mounted on the screw thread for efficient mixing into the fibrous mass of washing liquid 39 supplied through pipes 41 and screen holes 40. In zone 4, externally cylindrical screw thread 19 is enclosed by screen jacket 20. At the rear part of screen screen 20, zone 37, this is unperforated. In the front part of the press screw 10, the screw core is also perforated 22 for inward drainage of extruded liquid. At mass outlet 23 from the screw, counter holes 24 are fitted, which are axially operable. The pressed mass falls down through outlet 25.

Inlopp för massan sker genom stuts 26 och pressvätska dräneras ge- nom stuts 27 och 28 samt pressvatten genom zon 22 dräneras genom kanal 29.Inlet for the pulp takes place through nozzle 26 and press liquid is drained through nozzles 27 and 28 and pressurized water through zone 22 is drained through channel 29.

Beskrivning av uppfinningens funktion.Description of the function of the invention.

Från en pump eller nivålåda matas det material som skall avvattnas/ tvättas in genom stuts 26 och vidare av skruvgänga 15 in i zon 2.From a pump or level box, the material to be dewatered / washed is fed through socket 26 and further by screw thread 15 into zone 2.

Här sker avvattning av massan genom kompression och avrinning. Det avpressade vattnet gär ut genom perforering 36 och vidare genom stuts 27. Kompressionsförhållande räknat som gängvolym 30/gängvo- lym 31 är av storleksordning 2,0:1 till 4,0:1, företrädesvis 2,5:1 till 3,5:1. Vid utlopp 38 från zon 2 får massan tillfälle att expan- dera varvid samtidigt tillsättes tvättvätska 39 genom rör 41 Och silhål 40.Here, the pulp is drained through compression and drainage. The extruded water flows out through perforation 36 and further through socket 27. Compression ratio calculated as thread volume 30 / thread volume 31 is of the order of 2.0: 1 to 4.0: 1, preferably 2.5: 1 to 3.5: 1. At outlet 38 from zone 2, the mass is given the opportunity to expand, at the same time washing liquid 39 is added through pipes 41 and strainer holes 40.

Diameterförhållande 32/33 är av storleksordning 1,1 till 2,5, före- trâdesvis 1,5 till 2,0. Pinnar 17 anbringade på skruvkärna 10 om- besörjer att vätskan blandas väl med fibermassan. I zon 37 finns ingen perforering av silrör 20.Diameter ratio 32/33 is of the order of 1.1 to 2.5, preferably 1.5 to 2.0. Pins 17 mounted on screw core 10 ensure that the liquid mixes well with the fibrous mass. In zone 37 there is no perforation of sieve tube 20.

I zon 4 sker en succesiv kompression av fibermassan mellan cylind- riskt silrör 20 och divergerande skruvkärna 10. Kompressionsför- hållande räknat som gängvolym 34/gängvolym 35 är av storleksordning 2,0:1 till 4,0:1, företrädesvis 2,6:1 till 3,2:1. I slutdelen av zon 4 övergår skruvkärna 10 från divergerande till cylindrisk form och den cylindriska delen är perforerad 22 för transport av press- vätska även inåt. Vid massautlopp 23 finns anbringade mothâll 24 för slutreglering av massans torrhalt. r 504 271 »y Genom perforeing 21 utpressat vatten transporteras genom stuts 28 och genom perforering 22 utpressat vatten transporteras genom kanal 29. Den tvättade och pressade massan faller ned genom utlopps- I schakt 25.In zone 4, a successive compression of the fibrous mass takes place between cylindrical screen tube 20 and diverging screw core 10. Compression ratio calculated as thread volume 34 / thread volume 35 is of the order of 2.0: 1 to 4.0: 1, preferably 2.6: 1 to 3.2: 1. In the end part of zone 4, screw core 10 changes from diverging to cylindrical shape and the cylindrical part is perforated 22 for transporting press liquid also inwards. At pulp outlet 23 there are mounted stops 24 for final control of the dry matter content of the pulp. r 504 271 »y Squeezed water through perforation 21 is transported through stub 28 and squeezed water through perforation 22 is transported through channel 29. The washed and pressed mass falls down through outlet shaft 25.

Genom en första avvattning i zon 2från koncentrationer 2-10 procent upp till 12-20 procent samt därefter tillsats av tvättvätska och effektiv inblandning ner till koncentrationer 6-12 procent och därefter pressning/avvattning upp till 25-35 procent erhålles en effektiv tvättpressbehandling i enkel maskinenhet med dess i sig obestridliga fördelar gent emot valspressar etc.Through an initial dewatering in zone 2 from concentrations 2-10 percent up to 12-20 percent and then addition of washing liquid and effective mixing down to concentrations 6-12 percent and then pressing / dewatering up to 25-35 percent, an effective washing press treatment is obtained in simple machine unit with its inherently indisputable advantages over roller presses, etc.

Stora variationsmöjligheter finns gällande reglering av massans ur- tvättningsgrad genom variation av skruvens 10 varvtal, genom varia- tion av tillsats mängd tvättvätska 39 samt variation av kraften för mothåll 24.There are great possibilities for variation in regulating the degree of leaching of the pulp by varying the speed of the screw 10, by varying the amount of washing liquid 39 added and varying the force for the abutment 24.

För en ytterligare effektivisering av tvättprocessen i denna typ av anordning finns möjlighet att utforma konstruktionen som ett tryckkärl varvid fibermassan kan avvattnas/tvättas vid övertryck och förhöjd temperatur.For a further streamlining of the washing process in this type of device, it is possible to design the construction as a pressure vessel in which the fibrous mass can be dewatered / washed at overpressure and elevated temperature.

Detta förfarande innebär en sänkning av viscositeten på flödet och därmed en bättre uttvättningsgrad av restprodukterna i massa- suspensionen.This process means a reduction in the viscosity of the flow and thus a better degree of leaching of the residual products in the pulp suspension.

En variant av anordning enligt uppfinningen visas i Fig. 2.A variant of device according to the invention is shown in Fig. 2.

Här förlänges silcylinder 20 att anslutas emot mellanvägg 8. Tvätt- vätska 39 tillföres och fördelas genom röret 18 och in i zon 3 genom nipplar 40.Here, screen cylinder 20 is extended to be connected to partition wall 8. Washing liquid 39 is supplied and distributed through the pipe 18 and into zone 3 through nipples 40.

Claims (1)

1. 5 504 271 PATENTKRAV. Anordning för avvattning, pressning och samtidig tvättning av material såsom pappersmassa innefattande ett inlopp och ett utlopp för materialet samt en frammatningsanordning bestående av en längsgående matarskruv med divergerande skruvkärna och denna omgivande hölje vilket i en första sektion (2) är utformad som silrör med i matningsriktningen konvergerande form, i en andra sektion (3) utformad med element för tillförsel av späd- vätska samt i en tredje sektion (4) är utformad som silrör med cylind- risk form KÄNNETECKNAD AV att förhållandet mellan diameter utlopp konver- gerande silrör (16) zon (2) och diameter cylindriskt silrör (20) zon (4) är av storleksordning l:l,l till l:2,5 och företrädesvis l:l,5 till l:2,0. Anordning enligt krav l KÄNNETECKNAD AV att inom zon (3) och början zon (4) är på matarskruven (10) anbringat element (17) för omröring och bland- ning av det från zon (2) utmatade materialet med spädvätskan tillförd i zon (3). Anordning enligt krav l KÄNNETECKNAD AV att driften för skruv(l0) är för- sedd med variabelt varavtal. Anordning enligt något av föregående krav KÄNNETECKNAD AV att skruven (10) vid materialets utlopp (23) är försedd med perforering i skruvkärnan (22) för dränering även inåt av utpressad vätska. Anordning enligt något av föregående krav KÄNNETECKNAD AV att vid materi- alets utlopp (23) finns anbragt mothåll (24) för slutreglering av torr- halten på det utpressade materialet. Anordning enligt något av föregående krav KÄNNETECKNAD AV att konstruk- tionen är utförd som tryckkärl varvid materialet kan avvattnas/tvättas vid övertryck och därmed förhöjd temperatur.1. 5 504 271 PATENT REQUIREMENTS. Device for dewatering, pressing and simultaneous washing of material such as pulp comprising an inlet and an outlet for the material and a feed device consisting of a longitudinal feed screw with diverging screw core and this surrounding housing which in a first section (2) is designed as a sieve tube with in the feeding direction converging shape, in a second section (3) formed with elements for supply of diluent and in a third section (4) is designed as a sieve tube with a cylindrical shape CHARACTERIZED IN THAT the ratio of diameter outlet to converging sieve tube (16) zone (2) and diameter cylindrical screen tube (20) zone (4) is of the order of 1: 1, 1 to 1: 2.5 and preferably 1: 1.5 to 1: 2.0. Device according to Claim 1, CHARACTERIZED IN THAT within zone (3) and initially zone (4) elements (17) are arranged on the feed screw (10) for stirring and mixing the material discharged from zone (2) with the diluent supplied in zone ( 3). Device according to Claim 1 CHARACTERIZED IN THAT the operation of the screw (10) is provided with a variable contract. Device according to one of the preceding claims, CHARACTERIZED IN THAT the screw (10) at the outlet (23) of the material is provided with perforation in the screw core (22) for drainage also inwards of extruded liquid. Device according to one of the preceding claims CHARACTERIZED IN THAT at the outlet (23) of the material there is an abutment (24) for final control of the dry content of the extruded material. Device according to one of the preceding claims CHARACTERIZED IN THAT the construction is designed as a pressure vessel, whereby the material can be dewatered / washed at overpressure and thus elevated temperature.
SE9503383A 1995-10-02 1995-10-02 Screw press with separate washing zone for dewatering and washing of fiber suspensions SE504271C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE9503383A SE504271C2 (en) 1995-10-02 1995-10-02 Screw press with separate washing zone for dewatering and washing of fiber suspensions
CA002230115A CA2230115A1 (en) 1995-10-02 1996-10-01 Apparatus for dewatering/pressing in combination with washing of paper pulp
EP96932919A EP0853699A1 (en) 1995-10-02 1996-10-01 Apparatus for dewatering/pressing in combination with washing of paper pulp
JP51418897A JP2001503479A (en) 1995-10-02 1996-10-01 Dewatering / pressing equipment combined with paper pulp washing
PCT/SE1996/001226 WO1997013026A1 (en) 1995-10-02 1996-10-01 Apparatus for dewatering/pressing in combination with washing of paper pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503383A SE504271C2 (en) 1995-10-02 1995-10-02 Screw press with separate washing zone for dewatering and washing of fiber suspensions

Publications (3)

Publication Number Publication Date
SE9503383D0 SE9503383D0 (en) 1995-10-02
SE9503383L SE9503383L (en) 1996-12-23
SE504271C2 true SE504271C2 (en) 1996-12-23

Family

ID=20399645

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503383A SE504271C2 (en) 1995-10-02 1995-10-02 Screw press with separate washing zone for dewatering and washing of fiber suspensions

Country Status (5)

Country Link
EP (1) EP0853699A1 (en)
JP (1) JP2001503479A (en)
CA (1) CA2230115A1 (en)
SE (1) SE504271C2 (en)
WO (1) WO1997013026A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423183B1 (en) 1997-12-24 2002-07-23 Kimberly-Clark Worldwide, Inc. Paper products and a method for applying a dye to cellulosic fibers
US6749721B2 (en) 2000-12-22 2004-06-15 Kimberly-Clark Worldwide, Inc. Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition
US6582560B2 (en) 2001-03-07 2003-06-24 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
US7749356B2 (en) 2001-03-07 2010-07-06 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
US6916402B2 (en) 2002-12-23 2005-07-12 Kimberly-Clark Worldwide, Inc. Process for bonding chemical additives on to substrates containing cellulosic materials and products thereof
AU2003214028A1 (en) * 2003-03-14 2004-09-30 Atlas-Stord Denmark A/S A screw press having a cylindrical portion
SE525565C2 (en) * 2003-07-01 2005-03-08 Metso Paper Inc Process and washing press for washing and dewatering a fiber suspension
US7670459B2 (en) 2004-12-29 2010-03-02 Kimberly-Clark Worldwide, Inc. Soft and durable tissue products containing a softening agent
DE102007036377A1 (en) * 2007-07-31 2009-02-05 Voith Patent Gmbh Use of washing and screw presses for raw material and pulp washing
GB2477805B (en) * 2010-02-16 2016-10-12 Hydro Int Plc A separator and components thereof
CN202685345U (en) * 2012-08-03 2013-01-23 江门市贝尔斯顿电器有限公司 Squeezing mechanism for oil press
JP6694705B2 (en) * 2015-12-04 2020-05-20 デュプロ精工株式会社 Deinking waste liquid treatment device and deinking treatment device
SE541532C2 (en) * 2018-03-12 2019-10-29 Valmet Oy Arrangement and method for transporting pulp from one process stage to a subsequent process stage
CN110075592A (en) * 2019-05-31 2019-08-02 威海沁和实业有限公司 Spiral filtration rinsing maching

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE371656B (en) * 1973-04-05 1974-11-25 Wallen & Co Ab Lennart
NO154383C (en) * 1984-03-29 1986-09-10 Thune Eureka As SCREW PRESS.
US4915830A (en) * 1988-08-19 1990-04-10 Sprout-Bauer, Inc. Pulp wash press

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WO1997013026A1 (en) 1997-04-10
SE9503383D0 (en) 1995-10-02
SE9503383L (en) 1996-12-23
CA2230115A1 (en) 1997-04-10
EP0853699A1 (en) 1998-07-22
JP2001503479A (en) 2001-03-13

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