SE407816B - Forfarande for delignifiering av lignocellulosahaltigt material i flera steg - Google Patents
Forfarande for delignifiering av lignocellulosahaltigt material i flera stegInfo
- Publication number
- SE407816B SE407816B SE7405516A SE7405516A SE407816B SE 407816 B SE407816 B SE 407816B SE 7405516 A SE7405516 A SE 7405516A SE 7405516 A SE7405516 A SE 7405516A SE 407816 B SE407816 B SE 407816B
- Authority
- SE
- Sweden
- Prior art keywords
- delignification
- lignocellulose
- procedure
- containing material
- several steps
- 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
- D21C3/22—Other features of pulping processes
- D21C3/26—Multistage processes
- D21C3/263—Multistage processes at least one stage being in presence of oxygen
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1979473 | 1973-04-26 | ||
GB6030373A GB1449828A (en) | 1973-04-26 | 1973-12-31 | Oxygen pulping process |
Publications (1)
Publication Number | Publication Date |
---|---|
SE407816B true SE407816B (sv) | 1979-04-23 |
Family
ID=26254252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7405516A SE407816B (sv) | 1973-04-26 | 1974-04-24 | Forfarande for delignifiering av lignocellulosahaltigt material i flera steg |
Country Status (8)
Country | Link |
---|---|
US (1) | US3888727A (sv) |
JP (1) | JPS5029801A (sv) |
BR (1) | BR7403415D0 (sv) |
CA (1) | CA1035508A (sv) |
DE (1) | DE2420381A1 (sv) |
ES (1) | ES425711A1 (sv) |
GB (1) | GB1449828A (sv) |
SE (1) | SE407816B (sv) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0060277B1 (en) * | 1980-09-22 | 1986-03-26 | Sunds Defibrator Ab | Process to produce pulps |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1073161A (en) * | 1975-09-05 | 1980-03-11 | Canadian Industries Limited | Delignification process |
JPS52148201A (en) * | 1976-06-01 | 1977-12-09 | Toyo Pulp Co Ltd | Process for making alkali pulp and lignin separation |
ZA773044B (en) * | 1976-06-02 | 1978-04-26 | Australian Paper Manufacturers | Improvements in pulping processes |
CA1097463A (en) * | 1976-12-13 | 1981-03-17 | Naphtali N. Vanderhoek | Pulping processes |
DE2925544A1 (de) * | 1979-06-25 | 1981-01-22 | Bayer Ag | Verfahren zur delignifizierung von lignocellulose-materialien |
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5441603A (en) * | 1990-05-17 | 1995-08-15 | Union Camp Patent Holding, Inc. | Method for chelation of pulp prior to ozone delignification |
US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
US6241851B1 (en) | 1998-03-03 | 2001-06-05 | Andritz-Ahlstrom Inc. | Treatment of cellulose material with additives while producing cellulose pulp |
US6576084B1 (en) | 1999-09-13 | 2003-06-10 | Andritz Inc. | Method of pretreating pulp with yield or strength-enhancing additive |
US8961740B2 (en) | 2010-06-10 | 2015-02-24 | Packaging Corporation Of America | Method of manufacturing pulp for corrugated medium |
US8889384B2 (en) | 2010-10-07 | 2014-11-18 | Shell Oil Company | Process for the production of alcohols from biomass |
US10266852B2 (en) * | 2013-12-06 | 2019-04-23 | Alliance For Sustainable Energy, Llc | Lignin conversion to fuels, chemicals and materials |
US10017792B2 (en) | 2014-07-18 | 2018-07-10 | Alliance For Sustainable Energy, Llc | Biomass conversion to fuels and chemicals |
US11136601B2 (en) | 2018-08-02 | 2021-10-05 | Alliance For Sustainable Energy, Llc | Conversion of S-lignin compounds to useful intermediates |
CN113416124B (zh) * | 2021-06-21 | 2022-06-07 | 山东裕滨新材料有限公司 | 基于2-烷基蒽醌闭环废液制备蒽醌替代助剂的方法 |
US12011845B2 (en) * | 2021-07-15 | 2024-06-18 | The United States, As Represented By The Secretary Of Agriculture | Construction of structural materials from lumber using a carbonate or oxygen pre-treatment and densification |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE334286B (sv) * | 1968-12-05 | 1971-04-19 | Mo Och Domsjoe Ab | |
US3716447A (en) * | 1969-12-15 | 1973-02-13 | Dow Chemical Co | Delignification and bleaching of cellulose pulp with oxygen and alkali in the presence of magnesium chloride inhibitor |
CA895756A (en) * | 1970-04-03 | 1972-03-21 | Macmillan Bloedel Limited | Two-stage soda-oxygen pulping |
SE360128C (sv) * | 1970-08-25 | 1983-10-31 | Mo Och Domsjoe Ab | Sett att bleka cellulosamassa med en syreinnehallande gas i nervaro av alkali |
US3798119A (en) * | 1972-04-24 | 1974-03-19 | Scott Paper Co | Process for bleaching kraft pulp with oxygen in the presence of white liquor from a kraft recovery system |
-
1973
- 1973-12-31 GB GB6030373A patent/GB1449828A/en not_active Expired
-
1974
- 1974-04-04 CA CA196,893A patent/CA1035508A/en not_active Expired
- 1974-04-08 US US459112A patent/US3888727A/en not_active Expired - Lifetime
- 1974-04-24 SE SE7405516A patent/SE407816B/sv unknown
- 1974-04-25 JP JP49046070A patent/JPS5029801A/ja active Pending
- 1974-04-26 DE DE2420381A patent/DE2420381A1/de active Pending
- 1974-04-26 BR BR3415/74A patent/BR7403415D0/pt unknown
- 1974-04-26 ES ES425711A patent/ES425711A1/es not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0060277B1 (en) * | 1980-09-22 | 1986-03-26 | Sunds Defibrator Ab | Process to produce pulps |
Also Published As
Publication number | Publication date |
---|---|
AU6829074A (en) | 1975-10-30 |
CA1035508A (en) | 1978-08-01 |
BR7403415D0 (pt) | 1974-11-19 |
ES425711A1 (es) | 1976-12-01 |
GB1449828A (en) | 1976-09-15 |
DE2420381A1 (de) | 1974-11-07 |
US3888727A (en) | 1975-06-10 |
JPS5029801A (sv) | 1975-03-25 |
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