CA935957A - Digestion of wood with alkali and oxygen - Google Patents
Digestion of wood with alkali and oxygenInfo
- Publication number
- CA935957A CA935957A CA107130A CA107130A CA935957A CA 935957 A CA935957 A CA 935957A CA 107130 A CA107130 A CA 107130A CA 107130 A CA107130 A CA 107130A CA 935957 A CA935957 A CA 935957A
- Authority
- CA
- Canada
- Prior art keywords
- digestion
- wood
- alkali
- oxygen
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE06569/70A SE355614B (ru) | 1970-05-13 | 1970-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA935957A true CA935957A (en) | 1973-10-30 |
Family
ID=20269035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA107130A Expired CA935957A (en) | 1970-05-13 | 1971-03-08 | Digestion of wood with alkali and oxygen |
Country Status (12)
Country | Link |
---|---|
US (1) | US3769152A (ru) |
JP (1) | JPS5025042B1 (ru) |
AT (1) | AT304251B (ru) |
BR (1) | BR7102728D0 (ru) |
CA (1) | CA935957A (ru) |
DE (1) | DE2123542C3 (ru) |
FI (1) | FI54343C (ru) |
FR (1) | FR2091515A5 (ru) |
NO (1) | NO134563C (ru) |
SE (1) | SE355614B (ru) |
SU (1) | SU574164A3 (ru) |
ZA (1) | ZA712744B (ru) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI52877B (ru) * | 1972-11-16 | 1977-08-31 | Ahlstroem Oy | |
SE373395B (sv) * | 1972-12-19 | 1975-02-03 | Mo Och Domsjoe Ab | Forfarande for framstellning av cellulosamassa med hog ljushet genom uppslutning av ved med syrgas under tryck i nervaro av en kokvetska forsatt med basiska neutralisationsmedel |
SE379069B (ru) * | 1973-08-27 | 1975-09-22 | Kamyr Ab | |
GB1505529A (en) * | 1974-06-14 | 1978-03-30 | Mo Och Domsjoe Ab | Method for the oxygen-gas delignification of lignocellulosic material and apparatus for carrying out the method |
US4152197A (en) * | 1974-09-23 | 1979-05-01 | Mo Och Domsjo Ab | Process for preparing high-yield cellulose pulps by vapor phase pulping an unpulped portion of lignocellulosic material and a partially chemically pulped portion |
US4119486A (en) * | 1975-08-14 | 1978-10-10 | Westvaco Corporation | Process for bleaching wood pulp with ozone in the presence of a cationic surfactant |
US4338158A (en) * | 1976-04-09 | 1982-07-06 | Weyerhaeuser Company | Pulping in the presence of a protector |
US4172006A (en) * | 1976-08-26 | 1979-10-23 | Weyerhaeuser Company | Method of delignifying wood chips with oxygen by adding cooking liquor under pressure |
CA1079457A (en) * | 1976-09-13 | 1980-06-17 | Robert C. Eckert | Manganic ion bleaching process |
JPS6059357B2 (ja) * | 1977-05-18 | 1985-12-24 | 本州製紙株式会社 | パルプの製造方法 |
US4298426A (en) * | 1979-06-15 | 1981-11-03 | Weyerhaeuser Company | Method and apparatus for treating pulp with oxygen in a multi-stage bleaching sequence |
US4295927A (en) * | 1979-06-15 | 1981-10-20 | Weyerhaeuser Company | Method and apparatus for treating pulp with oxygen and storing the treated pulp |
US4303470A (en) * | 1979-06-15 | 1981-12-01 | Weyerhaeuser Company | Method and apparatus for mixing gases with a wood pulp slurry |
US4295926A (en) * | 1979-06-15 | 1981-10-20 | Weyerhaeuser Company | Method and apparatus for treating pulp with oxygen |
US4295925A (en) * | 1979-06-15 | 1981-10-20 | Weyerhaeuser Company | Treating pulp with oxygen |
IT1209352B (it) * | 1980-09-22 | 1989-07-16 | Nardi Franco | Processo per la produzione di cellulose chimiche e/o paste per carte, nonche'impianto e relativi componenti per l'attuazione del processo indicato |
BR8109040A (pt) * | 1981-09-04 | 1983-09-06 | Weyerhaeuser Co | Tratamento de polpa com oxigenio |
US4431480A (en) * | 1981-10-27 | 1984-02-14 | The Black Clawson Company | Method and apparatus for controlled addition of alkaline chemicals to an oxygen delignification reaction |
US4664832A (en) * | 1984-09-28 | 1987-05-12 | State Of South Dakota As Represented By The Department Of Transportation | Deicing chemicals and their preparation from polysaccharide sources |
US4622101A (en) * | 1984-10-01 | 1986-11-11 | International Paper Company | Method of oxygen bleaching with ferricyanide lignocellulosic material |
US4622100A (en) * | 1984-10-01 | 1986-11-11 | International Paper Company | Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector |
DE3923728A1 (de) * | 1989-07-18 | 1991-01-24 | Degussa | Verfahren zur stabilisierung der viskositaet von zellstoffen |
US5302244A (en) * | 1992-02-18 | 1994-04-12 | Domtar Inc. | Oxygen delignification of waste cellulosic paper products |
US5858021A (en) * | 1996-10-31 | 1999-01-12 | Kimberly-Clark Worldwide, Inc. | Treatment process for cellulosic fibers |
WO2000047812A1 (en) * | 1999-02-15 | 2000-08-17 | Kiram Ab | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
AU6604100A (en) * | 2000-02-14 | 2001-08-20 | Kiram Ab | Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
KR100981496B1 (ko) * | 2002-05-29 | 2010-09-10 | 세키스이가가쿠 고교가부시키가이샤 | 혈액 검사용 유저관, 혈액 검사용 유저관의 마개 및 혈액검사용 용기 |
SE525773C2 (sv) * | 2003-09-24 | 2005-04-26 | Kvaerner Pulping Tech | Metod och arrangemang för syrgasdelignifiering av cellulosamassa med pH-reglering i slutfasen |
CN1544752A (zh) * | 2003-11-28 | 2004-11-10 | 清洁制浆催化剂及其应用工艺 | |
EP2701826B1 (en) * | 2011-04-29 | 2019-02-27 | Geosyntec Consultants, Inc. | Method for volumetric reduction of organic liquids |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA694720A (en) * | 1964-09-22 | G. Gillaspie Athey | Method of bleaching cellulosic pulps | |
GB576510A (en) * | 1944-03-16 | 1946-04-08 | Henry Dreyfus | Improvements in or relating to the production of cellulose |
CA553349A (en) * | 1950-10-04 | 1958-02-18 | C. Harris George | Pulping process |
NL90306C (ru) * | 1951-02-28 | |||
US3013933A (en) * | 1953-01-28 | 1961-12-19 | Rayonier Inc | Method for preparation of wood cellulose |
FR72957E (ru) * | 1956-11-05 | |||
US2926114A (en) * | 1957-08-12 | 1960-02-23 | Kimberly Clark Co | Manufacture of cellulosic products |
NL97796C (ru) * | 1958-05-29 | |||
GB885605A (en) * | 1958-09-11 | 1961-12-28 | Stora Kopparbergs Bergslags Ab | Improved method for the production of neutral sulfite pulp |
FR1387853A (fr) * | 1963-09-19 | 1965-02-05 | Air Liquide | Délignification et blanchiment des pâtes cellulosiques chimiques et mi-chimiques |
SE314581B (ru) * | 1968-10-29 | 1969-09-08 | Mo Och Domsjoe Ab | |
SE335053B (ru) * | 1969-05-13 | 1971-05-10 | Mo Och Domsjoe Ab |
-
1970
- 1970-05-13 SE SE06569/70A patent/SE355614B/xx unknown
-
1971
- 1971-02-26 US US00119375A patent/US3769152A/en not_active Expired - Lifetime
- 1971-03-08 CA CA107130A patent/CA935957A/en not_active Expired
- 1971-04-06 FI FI971/71A patent/FI54343C/fi active
- 1971-04-28 ZA ZA712744A patent/ZA712744B/xx unknown
- 1971-05-06 SU SU7101653816A patent/SU574164A3/ru active
- 1971-05-06 BR BR2728/71A patent/BR7102728D0/pt unknown
- 1971-05-12 FR FR7117192A patent/FR2091515A5/fr not_active Expired
- 1971-05-12 DE DE2123542A patent/DE2123542C3/de not_active Expired
- 1971-05-12 NO NO1803/71A patent/NO134563C/no unknown
- 1971-05-13 JP JP46031655A patent/JPS5025042B1/ja active Pending
- 1971-05-13 AT AT418271A patent/AT304251B/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AT304251B (de) | 1972-12-27 |
JPS5025042B1 (ru) | 1975-08-20 |
SE355614B (ru) | 1973-04-30 |
FI54343C (fi) | 1978-11-10 |
BR7102728D0 (pt) | 1973-06-07 |
DE2123542A1 (de) | 1971-11-25 |
DE2123542B2 (de) | 1973-10-25 |
FR2091515A5 (ru) | 1972-01-14 |
DE2123542C3 (de) | 1974-05-22 |
SU574164A3 (ru) | 1977-09-25 |
NO134563B (ru) | 1976-07-26 |
US3769152A (en) | 1973-10-30 |
ZA712744B (en) | 1972-01-26 |
NO134563C (ru) | 1976-11-03 |
FI54343B (fi) | 1978-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA935957A (en) | Digestion of wood with alkali and oxygen | |
CA950609A (en) | Oxidation and regeneration of pulping liquors | |
CA935958A (en) | Alkaline oxygen digestion of wood | |
CA918978A (en) | Oxygen bleaching | |
CA941982A (en) | Aerobic digestion of sludge with oxygen | |
CA991187A (en) | Vincaminic acid and apovincaminic acid derivatives | |
AU475957B2 (en) | 17-HYDROXY-7-(LOWER ALKOXY) CARBONYL-3-OXO-17a-PREGN-4-ENE-21-CARBOXYLIC ACID Y-LACTONES AND CONGENERS | |
CA929711A (en) | Treating cellulosic materials with alkali and oxygen | |
AU3083871A (en) | Improvements in screws and sticks of screws | |
CA994513A (en) | Frame structure member and board structure of short timbers assembled | |
CA918635A (en) | Esters of the fluocinolon-acetonide and their preparation | |
CA994792A (en) | Esters of thienobenzopyrans and thiopyranobenzopyrans | |
CA980941A (en) | Aromatic-oxalic polyhydrozides and solutions thereof | |
AU3204971A (en) | Composition of matter and process | |
AU2603471A (en) | Production of plutonium formate and plutonium dioxide | |
AU451395B2 (en) | Oxygen pulping | |
CA837133A (en) | Production of ethers and esters of 4-hydroxytiglaldehyde | |
AU450817B2 (en) | Improvements in and relating tothe production of esters | |
CA837121A (en) | Methods of manufacturing alkali dialkylaluminates and their uses | |
CA845711A (en) | Sulfathiadiazoles and methods of making | |
CA812753A (en) | Determination of oxygen | |
AU449791B2 (en) | Improvements in and relating tothe manufacture of dimethyl terephthalate | |
CA867363A (en) | 9-d-psicofuranosylpurine and its esters | |
AU2626671A (en) | Improvements in and relating tothe production of esters | |
CA879510A (en) | Macrocomposite structure and process therefor |