SE9000138D0 - METHOD FOR DELIVERING PULP ONTO THE WIRE OF A PAPER MACHINE - Google Patents

METHOD FOR DELIVERING PULP ONTO THE WIRE OF A PAPER MACHINE

Info

Publication number
SE9000138D0
SE9000138D0 SE9000138A SE9000138A SE9000138D0 SE 9000138 D0 SE9000138 D0 SE 9000138D0 SE 9000138 A SE9000138 A SE 9000138A SE 9000138 A SE9000138 A SE 9000138A SE 9000138 D0 SE9000138 D0 SE 9000138D0
Authority
SE
Sweden
Prior art keywords
wire
white water
paper machine
pulp
sheet
Prior art date
Application number
SE9000138A
Other languages
Swedish (sv)
Other versions
SE9000138L (en
Inventor
A Kunnas
Original Assignee
Enso Gutzeit 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 Enso Gutzeit Oy filed Critical Enso Gutzeit Oy
Publication of SE9000138D0 publication Critical patent/SE9000138D0/en
Publication of SE9000138L publication Critical patent/SE9000138L/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • 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
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
    • D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/005—Microorganisms or enzymes

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

(57) The invention concerns a method for delivering pulp onto the wire of a paper machine into a sheet which in the later stages in converted into finished paper. The thick pulp from the pulping process is suspended with the white water recirculated in the paper machine into a suspension, which is delivered onto the wire into a homogeneous sheet and from which the water drained through the wire is recirculated to the suspension process. The closed circulation allows the enrichment of constituents such as hemicellulose dissolved or dispersed from the stock being prepared that lower water drainage and degrade the retention of fibers. According to the invention, enzymes are added to the lean white water of low consistency that are capable of disintegrating said deleterious constituents. The enzyme can be added to the short circulation of lean white water taking place from the sheet forming on the wire to the suspension process of the pulp, or alternatively, to the long circulation of the white water to other locations of use in the paper machine. The invention is particularly applicable to papermaking based on mechanical pulp such as TMP in which the amount of hemicellulose dissolving in the white water is highest.
SE9000138A 1989-01-16 1990-01-15 METHOD FOR DELIVERING MASS TO THE VIRUS OF A PAPER MACHINE SE9000138L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI890214A FI85041C (en) 1989-01-16 1989-01-16 FOERFARANDE FOER ATT BRINGA PAPPERSMASSA PAO EN PAPPERSMASKINS VIRA.

Publications (2)

Publication Number Publication Date
SE9000138D0 true SE9000138D0 (en) 1990-01-15
SE9000138L SE9000138L (en) 1990-07-17

Family

ID=8527730

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9000138A SE9000138L (en) 1989-01-16 1990-01-15 METHOD FOR DELIVERING MASS TO THE VIRUS OF A PAPER MACHINE

Country Status (6)

Country Link
JP (1) JPH02229291A (en)
CA (1) CA2007774A1 (en)
DE (1) DE4000558A1 (en)
FI (1) FI85041C (en)
FR (1) FR2641803B1 (en)
SE (1) SE9000138L (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660674B1 (en) * 1990-04-06 1992-06-12 Du Pin Cellulose PROCESS FOR THE TREATMENT OF RECYCLED WATER FOR DILUTING A PAPER PULP.
FI93230C (en) * 1991-03-22 1995-03-10 Genencor Int Europ Method for reducing resin difficulties in mechanical pulp
FI90670C (en) * 1991-05-02 1994-03-10 Metsae Serla Oy Treatment of alkali-treated pulp for use in papermaking
US5935836A (en) * 1994-07-29 1999-08-10 Rohm Enzyme Finland Oy Actinomadura xylanase sequences and methods of use
US6300114B1 (en) 1994-07-29 2001-10-09 Rohm Enzyme Finland Oy Sequences of xylanase and xylanase expression vectors
US7816129B2 (en) 1994-07-29 2010-10-19 Ab Enzymes Gmbh Production and secretion of proteins of bacterial origin in filamentous fungi
US5871730A (en) * 1994-07-29 1999-02-16 Universite De Sherbrooke Thermostable xylanase DNA, protein and methods of use
FI954377A (en) * 1995-09-18 1997-03-19 Ciba Geigy Ag Method on a paper machine
KR100288119B1 (en) * 1998-06-27 2001-05-02 김충섭 Recycling Method of Corrugated Cardboard Using Flotation and Enzyme Treatment
DE19830600A1 (en) * 1998-07-09 2000-01-13 Voith Sulzer Papiertech Patent Mixing and recirculation cycle
FI105833B (en) * 1998-07-13 2000-10-13 Valtion Teknillinen A method for concentrating process water LK substances
US6939437B1 (en) 1999-11-19 2005-09-06 Buckman Laboratories International, Inc. Paper making processes using enzyme and polymer combinations
DE10122331B4 (en) * 2001-05-08 2005-07-21 Alpha Calcit Füllstoff Gesellschaft Mbh Process for recycling and use of rejects
US7306702B2 (en) 2002-07-12 2007-12-11 Hercules Incorporation Enzymatic press felt treatment
WO2006061018A1 (en) * 2004-12-06 2006-06-15 Novozymes A/S Use of carbohydrate oxidase for sediment control
JP5653159B2 (en) * 2010-10-13 2015-01-14 デュプロ精工株式会社 Waste paper recycling processor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604198B1 (en) * 1986-09-22 1989-07-07 Du Pin Cellulose PROCESS FOR TREATING A PAPER PULP WITH AN ENZYMATIC SOLUTION.
FR2629108A1 (en) * 1988-03-22 1989-09-29 Du Pin Cellulose PROCESS FOR PRODUCING PAPER OR CARTON FROM RECYCLED FIBERS TREATED WITH ENZYMES

Also Published As

Publication number Publication date
FI85041B (en) 1991-11-15
FI890214A0 (en) 1989-01-16
CA2007774A1 (en) 1990-07-16
DE4000558A1 (en) 1990-07-19
FR2641803B1 (en) 1993-02-05
FR2641803A1 (en) 1990-07-20
FI890214A (en) 1990-07-17
FI85041C (en) 1992-02-25
JPH02229291A (en) 1990-09-12
SE9000138L (en) 1990-07-17

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