NO176446C - Apparat og fremgangsmåte for delignifisering av cellulosemasse - Google Patents
Apparat og fremgangsmåte for delignifisering av cellulosemasseInfo
- Publication number
- NO176446C NO176446C NO900259A NO900259A NO176446C NO 176446 C NO176446 C NO 176446C NO 900259 A NO900259 A NO 900259A NO 900259 A NO900259 A NO 900259A NO 176446 C NO176446 C NO 176446C
- Authority
- NO
- Norway
- Prior art keywords
- cellulose pulp
- delignifying cellulose
- delignifying
- pulp
- cellulose
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/026—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of O2, e.g. air
-
- 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
- D21C7/00—Digesters
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13740389 | 1989-06-01 |
Publications (4)
Publication Number | Publication Date |
---|---|
NO900259D0 NO900259D0 (no) | 1990-01-18 |
NO900259L NO900259L (no) | 1990-12-03 |
NO176446B NO176446B (no) | 1994-12-27 |
NO176446C true NO176446C (no) | 1995-04-05 |
Family
ID=15197830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO900259A NO176446C (no) | 1989-06-01 | 1990-01-18 | Apparat og fremgangsmåte for delignifisering av cellulosemasse |
Country Status (7)
Country | Link |
---|---|
US (1) | US5034095A (no) |
JP (1) | JPH0816315B2 (no) |
BR (1) | BR9000983A (no) |
CA (1) | CA2007986C (no) |
FI (1) | FI94969C (no) |
NO (1) | NO176446C (no) |
SE (1) | SE469634B (no) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5411634A (en) * | 1991-04-30 | 1995-05-02 | Kamyr, Inc. | Medium consistency ozone bleaching |
ZA924351B (en) * | 1991-06-27 | 1993-03-31 | Ahlstroem Oy | Ozone bleaching process |
ZA93224B (en) * | 1992-01-22 | 1993-08-18 | Olin Corp | Gas phase delignification of lignocellulosic material. |
US5372679A (en) * | 1992-06-08 | 1994-12-13 | Air Products And Chemicals, Inc. | Reactor system for treating cellulosic pulp at a constant upward flow velocity |
US6340409B1 (en) * | 1993-04-29 | 2002-01-22 | Lewis Donald Shackford | Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release |
US5460696A (en) * | 1993-08-12 | 1995-10-24 | The Boc Group, Inc. | Oxygen delignification method incorporating wood pulp mixing apparatus |
ZA947310B (en) * | 1993-09-22 | 1995-05-10 | Ingersoll Rand Co | Method of and apparatus for oxygen delignifiation of medium consistency pulp slurry |
US5500084A (en) * | 1994-09-21 | 1996-03-19 | Hoffman Environmental Systems, Inc. | Method and apparatus for pulping cellulosic material using a vessel with an impergnation zone and an attrition zone |
FI105701B (fi) | 1995-10-20 | 2000-09-29 | Ahlstrom Machinery Oy | Menetelmä ja laitteisto massan käsittelemiseksi |
SE505141C2 (sv) * | 1995-10-23 | 1997-06-30 | Sunds Defibrator Ind Ab | Syrgasdelignifiering av massa i två steg med hög satsning av alkali och syrgas och temperatur under 90 C i första steget |
US6319357B1 (en) | 1995-10-23 | 2001-11-20 | Valmet Fibertech Aktiebolag | Method for two-stage oxygen bleaching and delignification of chemical pulp |
WO1997020983A1 (en) * | 1995-12-07 | 1997-06-12 | Beloit Technologies, Inc. | Oxygen delignification of medium consistency pulp slurry |
US5755928A (en) * | 1995-12-07 | 1998-05-26 | Iogen Corporation | Method for automated monitoring of pulp retention time using an iodide salt as a tracer |
WO1997027358A2 (en) * | 1995-12-07 | 1997-07-31 | Beloit Technologies, Inc. | Oxygen delignification of medium consistency pulp slurry |
DE19615226A1 (de) * | 1996-04-18 | 1997-10-23 | Voith Sulzer Papiermasch Gmbh | Trockenpartie |
SE510740C2 (sv) * | 1996-11-26 | 1999-06-21 | Sunds Defibrator Ind Ab | Styrning av syrgasdelignifiering |
DE19821311C1 (de) * | 1998-05-13 | 1999-10-07 | Voith Sulzer Papiertech Patent | Verfahren zur Bleiche von Papierfaserstoff |
WO2004106624A1 (en) * | 2003-06-03 | 2004-12-09 | Pacific Pulp Resources Inc. | Method for producing pulp and lignin |
DE102005033347A1 (de) * | 2005-07-16 | 2007-01-18 | Henkel Kgaa | Mittel, enthaltend mindestens ein Alkalimetallhalogenid als Tracer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3353561A (en) * | 1963-11-20 | 1967-11-21 | Thiokol Chemical Corp | Pass tube for gamma ray densitometers |
US3398576A (en) * | 1965-03-15 | 1968-08-27 | Robert E. Cleary | Flow measuring device |
US3881985A (en) * | 1971-11-08 | 1975-05-06 | Improved Machinery Inc | Continuous digester with strainer valve cycling |
DE7541252U (de) * | 1975-12-24 | 1976-04-29 | Paul Gillet Gmbh, 6732 Edenkoben | Vorrichtung zum reinigen der abgase von brennkraftmaschinen |
US4548625A (en) * | 1984-07-11 | 1985-10-22 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas cleaning device for diesel engines |
-
1990
- 1990-01-16 US US07/466,113 patent/US5034095A/en not_active Expired - Lifetime
- 1990-01-17 CA CA002007986A patent/CA2007986C/en not_active Expired - Lifetime
- 1990-01-17 SE SE9000162A patent/SE469634B/sv not_active IP Right Cessation
- 1990-01-18 NO NO900259A patent/NO176446C/no not_active IP Right Cessation
- 1990-02-08 FI FI900623A patent/FI94969C/fi active IP Right Grant
- 1990-02-20 JP JP2037259A patent/JPH0816315B2/ja not_active Expired - Lifetime
- 1990-03-02 BR BR909000983A patent/BR9000983A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE9000162L (sv) | 1990-12-02 |
NO900259L (no) | 1990-12-03 |
NO176446B (no) | 1994-12-27 |
BR9000983A (pt) | 1991-02-19 |
US5034095A (en) | 1991-07-23 |
JPH0816315B2 (ja) | 1996-02-21 |
FI900623A0 (fi) | 1990-02-08 |
FI94969B (fi) | 1995-08-15 |
CA2007986A1 (en) | 1990-12-01 |
CA2007986C (en) | 1999-08-10 |
FI94969C (fi) | 1995-11-27 |
SE9000162D0 (sv) | 1990-01-17 |
NO900259D0 (no) | 1990-01-18 |
SE469634B (sv) | 1993-08-09 |
JPH0390691A (ja) | 1991-04-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK1K | Patent expired |