FI901711A - FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. - Google Patents
FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. Download PDFInfo
- Publication number
- FI901711A FI901711A FI901711A FI901711A FI901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A FI 901711 A FI901711 A FI 901711A
- Authority
- FI
- Finland
- Prior art keywords
- cellulosamassa
- foerfarande foer
- blekning
- foer blekning
- foerfarande
- Prior art date
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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
-
- 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
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
-
- 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
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI901711A FI88315C (en) | 1990-04-04 | 1990-04-04 | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA |
PCT/FI1991/000097 WO1991015627A1 (en) | 1990-04-04 | 1991-04-03 | A process for the bleaching of chemical pulp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI901711 | 1990-04-04 | ||
FI901711A FI88315C (en) | 1990-04-04 | 1990-04-04 | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA |
Publications (4)
Publication Number | Publication Date |
---|---|
FI901711A0 FI901711A0 (en) | 1990-04-04 |
FI901711A true FI901711A (en) | 1991-10-05 |
FI88315B FI88315B (en) | 1993-01-15 |
FI88315C FI88315C (en) | 1993-04-26 |
Family
ID=8530209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI901711A FI88315C (en) | 1990-04-04 | 1990-04-04 | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA |
Country Status (2)
Country | Link |
---|---|
FI (1) | FI88315C (en) |
WO (1) | WO1991015627A1 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI81395B (en) * | 1988-03-14 | 1990-06-29 | Cultor Oy | FOERFARANDE FOER BLEKNING AV CELLULOSAMASSA. |
JPH02160997A (en) * | 1988-12-13 | 1990-06-20 | Jujo Paper Co Ltd | Method for preventing trouble by pitch |
-
1990
- 1990-04-04 FI FI901711A patent/FI88315C/en not_active IP Right Cessation
-
1991
- 1991-04-03 WO PCT/FI1991/000097 patent/WO1991015627A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
FI88315B (en) | 1993-01-15 |
FI88315C (en) | 1993-04-26 |
FI901711A0 (en) | 1990-04-04 |
WO1991015627A1 (en) | 1991-10-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI900779A (en) | HYDROMETALLURGISKT FOERFARANDE FOER BEHANDLING AV ZINKSULFIDHALTIGA RAOAEMNEN. | |
FI900134A0 (en) | FOER IDENTIFIERING AV PLANTOR. | |
FI901135A (en) | FOERFARANDE FOER FRAMSTAELLNING AV VAEXTOLJEPRODUKT. | |
FI900995A (en) | TILLSLUTNINGSMEKANISM FOER SUGANORDNINGEN AV EN TANDVAORDSMASKIN. | |
FI900107A (en) | FOERFARANDE FOER FRAMSTAELLNING AV OXALSYRA. | |
FI900939A0 (en) | FOERFARANDE FOER MAERKNING AV TRAESTYCKEN. | |
FI901377A0 (en) | BLAOSANORDNING FOER VINDSPRIDNING AV SPAONOR. | |
FI910505A (en) | ANORDNING FOER FYLLNING AV KABLAR. | |
FI901059A0 (en) | VINKELKONSTRUKTION AV ELDSTAD. | |
FI900386A (en) | FOERFARANDE FOER FRAMSTAELLNING AV KOMPOSITSKIVPRODUKTER. | |
FI900829A (en) | DATORBASERAT FOERFARANDE FOER RANGERING AV TAOG. | |
FI901073A0 (en) | CENTRALVAERMEANORDNING BESTAOENDE AV VAERMESKAOP. | |
FI900448A0 (en) | FOERFARANDE FOER OEVERFOERING AV KLUMPPLANTOR. | |
FI902859A (en) | FOERFARANDE FOER SEPARERING AV VATTEN FRAON TORVSLAM. | |
FI900475A (en) | FOERFARANDE FOER AOSTADKOMMANDE AV EN LUFTKONDITIONERAD FOERPACKNING. | |
FI900830A (en) | FOERFARANDE FOER AOTERVINNING AV RETURPRODUKTER. | |
FI900208A0 (en) | VRIDANORDNING FOER VRIDNING AV EN FORDONSSTOL. | |
FI900346A0 (en) | ANORDNING FOER UPPSAMLING AV EN KUNDLEVERANSPARTI. | |
FI901061A (en) | ENERGILUCKA FOER UTSIDAN AV FOENSTER. | |
FI900977A0 (en) | PULVERKOMPOSITION FOER BILDANDE AV MUNVATTEN. | |
FI901161A (en) | REAKTIONSPRODUKTER AV ALKENYLBAERNSTENSSYRAIMID. | |
FI900322A0 (en) | FOERFARANDE FOER FRAMSTAELLNING AV GOLVBRAEDE. | |
FI900247A0 (en) | FOERFARANDE FOER FRAMSTAELLNING AV VAETEGAS. | |
FI900781A0 (en) | AONG- OCH KONDENSATKOPPLING FOER TORKNINGSCYLINDERN AV EN PAPPERMASKIN. | |
FI900106A0 (en) | FOERFARANDE FOER FRAMSTAELLNING AV SYRAAMID. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB | Publication of examined application | ||
FG | Patent granted |
Owner name: ENSO GUTZEIT OY |
|
MA | Patent expired |