SE0700090L - Pulp treatment apparatus and method - Google Patents

Pulp treatment apparatus and method

Info

Publication number
SE0700090L
SE0700090L SE0700090A SE0700090A SE0700090L SE 0700090 L SE0700090 L SE 0700090L SE 0700090 A SE0700090 A SE 0700090A SE 0700090 A SE0700090 A SE 0700090A SE 0700090 L SE0700090 L SE 0700090L
Authority
SE
Sweden
Prior art keywords
pulp
drum
forming zone
perforated surface
compartments
Prior art date
Application number
SE0700090A
Other languages
Swedish (sv)
Inventor
Joergen Lundberg
Original Assignee
Metso Paper Inc
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 Metso Paper Inc filed Critical Metso Paper Inc
Priority to SE0700090A priority Critical patent/SE0700090L/en
Priority to PCT/SE2008/050001 priority patent/WO2008088279A1/en
Publication of SE0700090L publication Critical patent/SE0700090L/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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

A pulp washing arrangement (10) comprises a rotatable drum (2) and an enclosing stationary casing (1 1). The drum has a plurality of compartments (4), at least partially defined by a perforated surface (7), for pulp to be washed arranged at a periphery. Seals (12) between the stationary casing and the drum define a forming zone (F) whereby the compartments pass the forming zone from an entrance part (16) to an exit part (17) upon rotation of the drum. The arrangement further comprises a pulp inlet (19) arranged for entering pulp to be washed into the compartments within the forming zone and pressurizing means (30) for applying a pressure difference over the perforated surface, causing filtrate liquid from the pulp to pass the perforated surface. The pressurizing means is arranged for applying a smaller pressure difference over the perforated surface in the entrance part of the forming zone than an average pressure difference. A method for pulp washing is also disclosed.
SE0700090A 2007-01-16 2007-01-16 Pulp treatment apparatus and method SE0700090L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0700090A SE0700090L (en) 2007-01-16 2007-01-16 Pulp treatment apparatus and method
PCT/SE2008/050001 WO2008088279A1 (en) 2007-01-16 2008-01-02 Device and method for washing and dewatering cellulose pulp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0700090A SE0700090L (en) 2007-01-16 2007-01-16 Pulp treatment apparatus and method

Publications (1)

Publication Number Publication Date
SE0700090L true SE0700090L (en) 2008-07-17

Family

ID=39636202

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0700090A SE0700090L (en) 2007-01-16 2007-01-16 Pulp treatment apparatus and method

Country Status (2)

Country Link
SE (1) SE0700090L (en)
WO (1) WO2008088279A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2940314B1 (en) 2008-12-23 2011-11-18 Total Raffinage Marketing GASOLINE FUEL FOR DIESEL ENGINE HAVING HIGH CARBON CONTENT OF RENEWABLE ORIGIN AND OXYGEN
SE537357C2 (en) * 2013-01-11 2015-04-14 Valmet Oy Apparatus for washing and / or dewatering cellulose pulp
SE539045C2 (en) * 2015-09-16 2017-03-28 Valmet Oy Washing arrangement for the treatment of cellulose pulp
SE541307C2 (en) * 2017-10-24 2019-06-25 Valmet Oy Pressure relief drum washer and a method for manufacturing the drum washer
SE544977C2 (en) * 2020-04-08 2023-02-14 Valmet Oy A pulp distribution compartment arrangement and a pulp introduction method for pulp filter equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE318183B (en) * 1968-05-24 1969-12-01 Karlstad Mekaniska Ab
FI56564C (en) * 1979-01-26 1980-02-11 Enso Gutzeit Oy ANORDNING FOER TVAETTNING AV MASS
US5139671A (en) * 1987-11-11 1992-08-18 A. Ahlstrom Corporation Apparatus for treating pulp
SE501774C2 (en) * 1993-09-30 1995-05-15 Kvaerner Pulp Equipment As Perforated drum for thin film dewatering of recycled paper pulp - contains device for creating different pressures inside the drum

Also Published As

Publication number Publication date
WO2008088279A1 (en) 2008-07-24

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Legal Events

Date Code Title Description
NAV Patent application has lapsed