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FI945783L - Method for making washing more efficient - Google Patents

Method for making washing more efficientDownload PDF

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Publication number
FI945783L
FI945783LFI945783AFI945783AFI945783LFI 945783 LFI945783 LFI 945783LFI 945783 AFI945783 AFI 945783AFI 945783 AFI945783 AFI 945783AFI 945783 LFI945783 LFI 945783L
Authority
FI
Finland
Prior art keywords
washing
pulp
efficient
washed
fractionating
Prior art date
Application number
FI945783A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI945783A7 (en
FI945783A0 (en
Inventor
Kari Ala-Kaila
Kaj Henricson
Pekka Tervola
Original Assignee
Ahlstroem Oy
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 Ahlstroem OyfiledCriticalAhlstroem Oy
Priority to FI945783ApriorityCriticalpatent/FI945783L/en
Publication of FI945783A0publicationCriticalpatent/FI945783A0/en
Priority to PCT/FI1995/000668prioritypatent/WO1996017996A1/en
Publication of FI945783A7publicationCriticalpatent/FI945783A7/en
Publication of FI945783LpublicationCriticalpatent/FI945783L/en

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Abstract

The present invention relates to a method of intensifying washing of pulp, especially in connection with oxygen delignification. The invention especially relates to the utilization of fractionating wash in oxygen delignification. The pulp is washed in at least two fractionating displacement washing stages (12, 22). Two different filtrate fractions (S1, S2) are removed from the second washing stage. These filtrates are used as washing liquids in the first washing stage (12). The temperature in the washing system is maintained above 90 DEG C and the thickness of the pulp layer to be washed is higher than 70 mm.
FI945783A1994-12-081994-12-08 Method for making washing more efficientFI945783L (en)

Priority Applications (2)

Application NumberPriority DateFiling DateTitle
FI945783AFI945783L (en)1994-12-081994-12-08 Method for making washing more efficient
PCT/FI1995/000668WO1996017996A1 (en)1994-12-081995-12-05Washing of pulp in a fractionating washing system

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
FI945783AFI945783L (en)1994-12-081994-12-08 Method for making washing more efficient

Publications (3)

Publication NumberPublication Date
FI945783A0 FI945783A0 (en)1994-12-08
FI945783A7 FI945783A7 (en)1996-06-09
FI945783Ltrue FI945783L (en)1996-06-09

Family

ID=8541944

Family Applications (1)

Application NumberTitlePriority DateFiling Date
FI945783AFI945783L (en)1994-12-081994-12-08 Method for making washing more efficient

Country Status (2)

CountryLink
FI (1)FI945783L (en)
WO (1)WO1996017996A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FI112957B (en)*1999-07-212004-02-13Metso Paper Pori Oy Method and apparatus for washing pulp
EP1574614B1 (en)2000-10-172015-11-11James Hardie Technology LimitedMethod for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials
ATE323664T1 (en)*2000-10-172006-05-15James Hardie Int Finance Bv METHOD FOR PRODUCING A FIBER-REINFORCED CEMENT COMPOSITE MATERIAL, COMPOSITE CONSTRUCTION MATERIAL AND A MATERIAL APPROACH
MXPA03007956A (en)2001-03-092003-12-04James Hardie Res Pty LtdFiber reinforced cement composite materials using chemically treated fibers with improved dispersibility.
US20030213569A1 (en)*2002-05-152003-11-20Brian WesterVery low COD unbleached pulp
US8993462B2 (en)2006-04-122015-03-31James Hardie Technology LimitedSurface sealed reinforced building element
FI123023B (en)2009-09-012012-10-15Andritz Oy Method and apparatus for separating soap
FI130070B (en)*2018-03-072023-01-31Andritz OyMethod of producing dissolving pulp
FI130499B (en)*2021-03-252023-10-10Metsae Fibre Oy Method and device for treating mixtures of liquids and solids

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
FI77063B (en)*1986-12-171988-09-30Ahlstroem Oy FOERFARANDE FOER EFFEKTIVERING AV FIBERSUSPENSIONSTVAETT.
US5567262A (en)*1991-04-161996-10-22Ahlstrom Machinery Inc.Two stage pressure diffuser

Also Published As

Publication numberPublication date
FI945783A7 (en)1996-06-09
FI945783A0 (en)1994-12-08
WO1996017996A1 (en)1996-06-13

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Legal Events

DateCodeTitleDescription
GBTransfer or assigment of application

Owner name:AHLSTROM MACHINERY OY

FDApplication lapsed
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