SE9401514L - Method and apparatus for treating a liquid fibrous material - Google Patents

Method and apparatus for treating a liquid fibrous material

Info

Publication number
SE9401514L
SE9401514L SE9401514A SE9401514A SE9401514L SE 9401514 L SE9401514 L SE 9401514L SE 9401514 A SE9401514 A SE 9401514A SE 9401514 A SE9401514 A SE 9401514A SE 9401514 L SE9401514 L SE 9401514L
Authority
SE
Sweden
Prior art keywords
treatment agent
layer
pulp
space
treating
Prior art date
Application number
SE9401514A
Other languages
Swedish (sv)
Other versions
SE9401514D0 (en
SE502815C2 (en
Inventor
Sture Eriksson
Ann-Sofie Joensson
Bengt Joensson
Original Assignee
Kvaerner Pulping Tech
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 Kvaerner Pulping Tech filed Critical Kvaerner Pulping Tech
Priority to SE9401514A priority Critical patent/SE502815C2/en
Publication of SE9401514D0 publication Critical patent/SE9401514D0/en
Priority to AU24580/95A priority patent/AU2458095A/en
Priority to PCT/SE1995/000432 priority patent/WO1995030046A1/en
Publication of SE9401514L publication Critical patent/SE9401514L/en
Publication of SE502815C2 publication Critical patent/SE502815C2/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
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
    • D21C9/06—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents in filters ; Washing of concentrated pulp, e.g. pulp mats, on filtering surfaces
    • 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
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward 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
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • 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
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/644—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure plates, membranes
    • 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
    • B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
    • 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
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers

Landscapes

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

Abstract

A method and an apparatus for treating pulp with a treatment agent for simultaneous displacement and thickening, in which the pulp is fed into a space (6) in order to form a layer on the perforated casing (5) of a rotating drum (3). According to the invention, the treatment agent is also fed into the space (6) in order to form a continuous layer (22) of treatment agent up against the mobile pulp layer (20). The displacement and thickening are carried out continuously at a mechanical pressure on the pulp layer (20) which is less than 100 kPa, and for the most part using the treatment agent. The quantity of liquid which is displaced through the casing (5) per unit of time exceeds the quantity of treatment agent which is supplied. A distribution channel for the treatment agent is designed and arranged in association with the space (6) in such a way that the layer of treatment agent is formed and maintained in free contact with the pulp layer.
SE9401514A 1994-05-03 1994-05-03 Method and apparatus for treating a liquid fibrous material SE502815C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9401514A SE502815C2 (en) 1994-05-03 1994-05-03 Method and apparatus for treating a liquid fibrous material
AU24580/95A AU2458095A (en) 1994-05-03 1995-04-21 Method of treating a liquid-containing fibre material and apparatus for carrying out the method
PCT/SE1995/000432 WO1995030046A1 (en) 1994-05-03 1995-04-21 Method of treating a liquid-containing fibre material and apparatus for carrying out the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9401514A SE502815C2 (en) 1994-05-03 1994-05-03 Method and apparatus for treating a liquid fibrous material

Publications (3)

Publication Number Publication Date
SE9401514D0 SE9401514D0 (en) 1994-05-03
SE9401514L true SE9401514L (en) 1995-11-04
SE502815C2 SE502815C2 (en) 1996-01-22

Family

ID=20393868

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9401514A SE502815C2 (en) 1994-05-03 1994-05-03 Method and apparatus for treating a liquid fibrous material

Country Status (3)

Country Link
AU (1) AU2458095A (en)
SE (1) SE502815C2 (en)
WO (1) WO1995030046A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753604C2 (en) * 1997-12-03 1999-12-16 Voith Sulzer Stoffaufbereitung Process for dewatering a fiber suspension
CN110559728A (en) * 2019-08-27 2019-12-13 首创爱华(天津)市政环境工程有限公司 Micro-flocculation technology for fiber rotary disc filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE454187B (en) * 1985-10-31 1988-04-11 Kamyr Ab FIBER MATERIAL TREATMENT APPLIANCE
US4827741A (en) * 1988-03-21 1989-05-09 Ingersoll-Rand Company Pulp washer discharging a pulp slurry at a controlled consistency
US5046338A (en) * 1990-06-13 1991-09-10 Ingersoll-Rand Company Multiphase pulp washer

Also Published As

Publication number Publication date
AU2458095A (en) 1995-11-29
SE9401514D0 (en) 1994-05-03
SE502815C2 (en) 1996-01-22
WO1995030046A1 (en) 1995-11-09

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