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SE8901373D0 - dewatering - Google Patents

dewatering

Info

Publication number
SE8901373D0
SE8901373D0 SE8901373A SE8901373A SE8901373D0 SE 8901373 D0 SE8901373 D0 SE 8901373D0 SE 8901373 A SE8901373 A SE 8901373A SE 8901373 A SE8901373 A SE 8901373A SE 8901373 D0 SE8901373 D0 SE 8901373D0
Authority
SE
Sweden
Prior art keywords
screening cylinder
dewatering
pulp
screw thread
rotatable
Prior art date
Application number
SE8901373A
Other languages
Swedish (sv)
Other versions
SE8901373L (en
SE463425B (en
Original Assignee
Sunds Defibrator
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 Sunds Defibrator filed Critical Sunds Defibrator
Priority to SE8901373A priority Critical patent/SE463425B/en
Publication of SE8901373D0 publication Critical patent/SE8901373D0/en
Priority to PCT/SE1990/000168 priority patent/WO1990012919A1/en
Priority to AU55417/90A priority patent/AU5541790A/en
Publication of SE8901373L publication Critical patent/SE8901373L/en
Publication of SE463425B publication Critical patent/SE463425B/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/11—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for outward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • 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
    • 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
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined 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)
  • Centrifugal Separators (AREA)

Abstract

A dewatering device for pulp suspensions, comprising a rotatable screening cylinder (1). In the screening cylinder a rotatable shaft (3) is located which is provided with a screw thread (7) for conveying the pulp through the screening cylinder (1) while dewatering the same due to the effect of the centrifugal force. Between the screw thread (7) and screening cylinder (1) a gap (8) is formed, in which a layer of pulp can be deposited on the inside of the screening cylinder (1) in order thereby to act as a filter medium, through which the dewatering takes place.
SE8901373A 1989-04-17 1989-04-17 dewatering SE463425B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8901373A SE463425B (en) 1989-04-17 1989-04-17 dewatering
PCT/SE1990/000168 WO1990012919A1 (en) 1989-04-17 1990-03-15 Dewatering device
AU55417/90A AU5541790A (en) 1989-04-17 1990-03-15 Dewatering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8901373A SE463425B (en) 1989-04-17 1989-04-17 dewatering

Publications (3)

Publication Number Publication Date
SE8901373D0 true SE8901373D0 (en) 1989-04-17
SE8901373L SE8901373L (en) 1990-10-18
SE463425B SE463425B (en) 1990-11-19

Family

ID=20375690

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8901373A SE463425B (en) 1989-04-17 1989-04-17 dewatering

Country Status (3)

Country Link
AU (1) AU5541790A (en)
SE (1) SE463425B (en)
WO (1) WO1990012919A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397049B (en) * 1991-12-05 1994-01-25 Maximilian Kriegl DEVICE FOR SEPARATING PARTICULAR MATERIAL
JPH0763873B2 (en) * 1991-12-20 1995-07-12 富国工業株式会社 Rotary sieve
GB9321705D0 (en) * 1993-10-21 1993-12-15 Gardner Joseph Slurry separator
GB2297281B (en) * 1993-10-21 1998-04-01 Joseph Gardner Slurry separator
AU3401195A (en) * 1995-07-17 1997-02-18 Kvaerner Pulping Technologies Aktiebolag Method and device for treating a pulp suspension
US6139685A (en) * 1998-01-16 2000-10-31 Kvaerner Pulping Ab Method and device for treating a pulp suspension
JPH11216313A (en) 1998-02-03 1999-08-10 Ishikawajima Harima Heavy Ind Co Ltd Dehydration concentrator
AT507837B1 (en) * 2008-12-29 2010-10-15 Andritz Ag Maschf METHOD AND DEVICE FOR DRAINING AND DISPERSING A FIBROUS MATERIAL
SE536163C2 (en) * 2011-10-03 2013-06-04 Metso Paper Sweden Ab Mass distribution unit, as well as apparatus for washing and / or dewatering cellulose pulp
GB2505670A (en) * 2012-09-06 2014-03-12 Siemens Vai Metals Tech Gmbh Dewatering slurry
CN107640881A (en) * 2017-11-03 2018-01-30 张佩春 A kind of sewage pre-dehydration device of band recoil cleaning
WO2020142827A1 (en) 2019-01-09 2020-07-16 Jeremy Leonard Centrifugal separator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES478987A1 (en) * 1978-03-29 1979-07-16 Uop Inc Process for dewatering fibrous waste
SE421434B (en) * 1978-06-14 1981-12-21 Berggren Torsten L SCREW PRESS

Also Published As

Publication number Publication date
SE8901373L (en) 1990-10-18
WO1990012919A1 (en) 1990-11-01
AU5541790A (en) 1990-11-16
SE463425B (en) 1990-11-19

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