SE9000138D0 - METHOD FOR DELIVERING PULP ONTO THE WIRE OF A PAPER MACHINE - Google Patents
METHOD FOR DELIVERING PULP ONTO THE WIRE OF A PAPER MACHINEInfo
- 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
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.
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)
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)
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 |
-
1989
- 1989-01-16 FI FI890214A patent/FI85041C/en active IP Right Grant
-
1990
- 1990-01-10 DE DE19904000558 patent/DE4000558A1/en not_active Withdrawn
- 1990-01-12 FR FR9000355A patent/FR2641803B1/en not_active Expired - Fee Related
- 1990-01-15 CA CA 2007774 patent/CA2007774A1/en not_active Abandoned
- 1990-01-15 SE SE9000138A patent/SE9000138L/en not_active Application Discontinuation
- 1990-01-16 JP JP466190A patent/JPH02229291A/en active Pending
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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