NO770870L - Fremgangsm}te for } ¦ke utbyttet av tremasse ved } forbehandle trefliser med oksygen f¦r kjemisk koking - Google Patents
Fremgangsm}te for } ¦ke utbyttet av tremasse ved } forbehandle trefliser med oksygen f¦r kjemisk kokingInfo
- Publication number
- NO770870L NO770870L NO770870A NO770870A NO770870L NO 770870 L NO770870 L NO 770870L NO 770870 A NO770870 A NO 770870A NO 770870 A NO770870 A NO 770870A NO 770870 L NO770870 L NO 770870L
- Authority
- NO
- Norway
- Prior art keywords
- reactor
- oxygen
- wood
- temperature
- wood chips
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 51
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 45
- 239000001301 oxygen Substances 0.000 title claims description 45
- 229910052760 oxygen Inorganic materials 0.000 title claims description 45
- 239000002023 wood Substances 0.000 title claims description 44
- 238000009835 boiling Methods 0.000 title claims description 21
- 239000000126 substance Substances 0.000 title claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 15
- 239000011261 inert gas Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000717 retained effect Effects 0.000 claims 1
- 230000008569 process Effects 0.000 description 20
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000000123 paper Substances 0.000 description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 10
- 238000010411 cooking Methods 0.000 description 8
- 229910021653 sulphate ion Inorganic materials 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 229920001131 Pulp (paper) Polymers 0.000 description 5
- 239000002655 kraft paper Substances 0.000 description 5
- 229920005610 lignin Polymers 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002203 pretreatment Methods 0.000 description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 239000010876 untreated wood Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 241000349750 Baphia nitida Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000008844 regulatory mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003911 water pollution Methods 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/08—Pretreatment of the finely-divided materials before digesting with oxygen-generating compounds
Landscapes
- Paper (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66625776A | 1976-03-12 | 1976-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO770870L true NO770870L (no) | 1977-09-13 |
Family
ID=24673454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO770870A NO770870L (no) | 1976-03-12 | 1977-03-11 | Fremgangsm}te for } ¦ke utbyttet av tremasse ved } forbehandle trefliser med oksygen f¦r kjemisk koking |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS52110902A (enExample) |
| AU (1) | AU504413B2 (enExample) |
| BR (1) | BR7701481A (enExample) |
| DE (1) | DE2710700A1 (enExample) |
| FI (1) | FI770790A7 (enExample) |
| FR (1) | FR2343855A1 (enExample) |
| NO (1) | NO770870L (enExample) |
| SE (1) | SE7702781L (enExample) |
| TR (1) | TR19409A (enExample) |
| ZA (1) | ZA771491B (enExample) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4859543A (en) * | 1987-04-28 | 1989-08-22 | Kennametal Inc. | Earth working tool having a working element fabricated from cemented tungsten carbide compositions with enhanced properties |
| US5460696A (en) * | 1993-08-12 | 1995-10-24 | The Boc Group, Inc. | Oxygen delignification method incorporating wood pulp mixing apparatus |
| JP4958166B2 (ja) * | 2006-05-31 | 2012-06-20 | 独立行政法人産業技術総合研究所 | 酸素存在下におけるアルコールによる植物系バイオマスの処理方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR540571A (fr) * | 1921-09-01 | 1922-07-13 | Procédé de transformation des végétaux en pâte à papier | |
| BE419220A (enExample) * | 1935-12-31 | |||
| SE391544C (sv) * | 1974-12-10 | 1985-10-28 | Billeruds Ab | Sett for forcerad hartsmognad hos vedflis |
| SE7613149L (sv) * | 1976-01-05 | 1977-10-06 | Weyerhaeuser Co | Syredelignifiering |
-
1977
- 1977-03-11 FI FI770790A patent/FI770790A7/fi not_active Application Discontinuation
- 1977-03-11 ZA ZA00771491A patent/ZA771491B/xx unknown
- 1977-03-11 DE DE19772710700 patent/DE2710700A1/de active Pending
- 1977-03-11 TR TR19409A patent/TR19409A/xx unknown
- 1977-03-11 FR FR7707412A patent/FR2343855A1/fr active Pending
- 1977-03-11 SE SE7702781A patent/SE7702781L/xx unknown
- 1977-03-11 NO NO770870A patent/NO770870L/no unknown
- 1977-03-11 BR BR7701481A patent/BR7701481A/pt unknown
- 1977-03-11 JP JP2615377A patent/JPS52110902A/ja active Pending
- 1977-03-11 AU AU23177/77A patent/AU504413B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| TR19409A (tr) | 1979-03-01 |
| JPS52110902A (en) | 1977-09-17 |
| SE7702781L (sv) | 1977-09-13 |
| DE2710700A1 (de) | 1977-09-15 |
| AU504413B2 (en) | 1979-10-11 |
| FR2343855A1 (fr) | 1977-10-07 |
| ZA771491B (en) | 1978-02-22 |
| BR7701481A (pt) | 1977-11-29 |
| AU2317777A (en) | 1978-09-14 |
| FI770790A7 (enExample) | 1977-09-13 |
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