NO135150B - - Google Patents
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- Publication number
- NO135150B NO135150B NO4541/73A NO454173A NO135150B NO 135150 B NO135150 B NO 135150B NO 4541/73 A NO4541/73 A NO 4541/73A NO 454173 A NO454173 A NO 454173A NO 135150 B NO135150 B NO 135150B
- Authority
- NO
- Norway
- Prior art keywords
- mass
- boiling
- yield
- cellulose
- acid
- Prior art date
Links
- 230000029087 digestion Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000009835 boiling Methods 0.000 claims description 19
- 239000002253 acid Substances 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 11
- 239000001913 cellulose Substances 0.000 claims description 11
- 238000010411 cooking Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims 1
- 238000001556 precipitation Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- 239000002023 wood Substances 0.000 description 7
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 6
- 235000011613 Pinus brutia Nutrition 0.000 description 6
- 241000018646 Pinus brutia Species 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 229910021653 sulphate ion Inorganic materials 0.000 description 6
- 229920005610 lignin Polymers 0.000 description 5
- 238000001226 reprecipitation Methods 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 208000004998 Abdominal Pain Diseases 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 208000002881 Colic Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7216130A SE384544B (sv) | 1972-12-11 | 1972-12-11 | Sett vid alkalisk uppslutning av cellulosahaltigt material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO135150B true NO135150B (ref) | 1976-11-08 |
| NO135150C NO135150C (ref) | 1977-02-16 |
Family
ID=20301770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO4541/73A NO135150C (ref) | 1972-12-11 | 1973-11-28 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3937647A (ref) |
| JP (1) | JPS5117601B2 (ref) |
| CA (1) | CA1016708A (ref) |
| FI (1) | FI55224C (ref) |
| NO (1) | NO135150C (ref) |
| SE (1) | SE384544B (ref) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239906A (en) * | 1979-06-07 | 1980-12-16 | Standard Brands Incorporated | Method for obtaining a purified cellulose product from corn hulls |
| SE447554B (sv) * | 1985-04-04 | 1986-11-24 | Simonson Rune G W | Forfarande vid tillverkning av produkter innehallande trespan |
| US6468390B1 (en) * | 1998-08-24 | 2002-10-22 | Kvaerner Pulping Ab | Method for continuous cooking of lignocellulosic fiber material |
| US6245196B1 (en) | 1999-02-02 | 2001-06-12 | Praxair Technology, Inc. | Method and apparatus for pulp yield enhancement |
| US7815741B2 (en) * | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
| US7815876B2 (en) * | 2006-11-03 | 2010-10-19 | Olson David A | Reactor pump for catalyzed hydrolytic splitting of cellulose |
| SE0702874L (sv) | 2007-12-20 | 2009-06-09 | Metso Fiber Karlstad Ab | Förfarande vid tillverkning av sulfatmassa där hemicellulosor återförs |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1859888A (en) * | 1927-02-02 | 1932-05-24 | Brown Co | Process of regenerating spent alkaline liquor to fresh acid cooking liquor |
| US2167556A (en) * | 1936-03-18 | 1939-07-25 | Stacom Process Corp | Recovery of lignin from natural cellulose compounds |
| US2686120A (en) * | 1952-01-14 | 1954-08-10 | Ontario Paper Co Ltd | Alkaline pulping of lignocellulose in the presence of oxygen to produce pulp, vanillin, and other oxidation products of lignin substance |
| US2976273A (en) * | 1958-09-10 | 1961-03-21 | West Virginia Pulp & Paper Co | Treatment of kraft black liquor and product |
| US3428520A (en) * | 1965-08-12 | 1969-02-18 | Scott Paper Co | Pulping process with lignin recovery |
| US3806403A (en) * | 1972-03-27 | 1974-04-23 | Nyanza Inc | Process for treating black liquor to precipitate organic materials therefrom |
-
1972
- 1972-12-11 SE SE7216130A patent/SE384544B/xx unknown
-
1973
- 1973-11-06 CA CA185,164A patent/CA1016708A/en not_active Expired
- 1973-11-12 US US05/415,153 patent/US3937647A/en not_active Expired - Lifetime
- 1973-11-28 NO NO4541/73A patent/NO135150C/no unknown
- 1973-12-03 FI FI3705/73A patent/FI55224C/fi active
- 1973-12-10 JP JP48136957A patent/JPS5117601B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1016708A (en) | 1977-09-06 |
| NO135150C (ref) | 1977-02-16 |
| FI55224C (fi) | 1979-06-11 |
| US3937647A (en) | 1976-02-10 |
| FI55224B (fi) | 1979-02-28 |
| JPS5046904A (ref) | 1975-04-26 |
| JPS5117601B2 (ref) | 1976-06-03 |
| SE384544B (sv) | 1976-05-10 |
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