NO750369L - - Google Patents
Info
- Publication number
- NO750369L NO750369L NO750369A NO750369A NO750369L NO 750369 L NO750369 L NO 750369L NO 750369 A NO750369 A NO 750369A NO 750369 A NO750369 A NO 750369A NO 750369 L NO750369 L NO 750369L
- Authority
- NO
- Norway
- Prior art keywords
- treatment
- oxygen
- cyanide
- approx
- carried out
- Prior art date
Links
- 238000000034 method Methods 0.000 claims description 56
- 238000011282 treatment Methods 0.000 claims description 52
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 229920001131 Pulp (paper) Polymers 0.000 claims description 31
- 239000003513 alkali Substances 0.000 claims description 29
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 26
- 229910052760 oxygen Inorganic materials 0.000 claims description 26
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 22
- 238000009835 boiling Methods 0.000 claims description 21
- 239000002023 wood Substances 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 6
- 239000001913 cellulose Substances 0.000 claims description 6
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 claims description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims 3
- 229910052979 sodium sulfide Inorganic materials 0.000 claims 1
- 239000002655 kraft paper Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 17
- 238000010411 cooking Methods 0.000 description 14
- 230000008901 benefit Effects 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 238000002203 pretreatment Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000123 paper Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000029087 digestion Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 229920001021 polysulfide Polymers 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- 235000005018 Pinus echinata Nutrition 0.000 description 1
- 241001236219 Pinus echinata Species 0.000 description 1
- 235000017339 Pinus palustris Nutrition 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- -1 air Chemical compound 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012978 lignocellulosic material Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/06—Pretreatment of the finely-divided materials before digesting with alkaline reacting compounds
Landscapes
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US49673474A | 1974-08-12 | 1974-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750369L true NO750369L (enrdf_load_stackoverflow) | 1976-02-13 |
Family
ID=23973900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750369A NO750369L (enrdf_load_stackoverflow) | 1974-08-12 | 1975-02-05 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5126303A (enrdf_load_stackoverflow) |
| CA (1) | CA1050212A (enrdf_load_stackoverflow) |
| DE (1) | DE2505004A1 (enrdf_load_stackoverflow) |
| FI (1) | FI750314A7 (enrdf_load_stackoverflow) |
| FR (1) | FR2282017A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1501456A (enrdf_load_stackoverflow) |
| IT (1) | IT1027406B (enrdf_load_stackoverflow) |
| NO (1) | NO750369L (enrdf_load_stackoverflow) |
| SE (1) | SE7501239L (enrdf_load_stackoverflow) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61167292U (enrdf_load_stackoverflow) * | 1986-03-20 | 1986-10-17 |
-
1974
- 1974-09-17 CA CA209,440A patent/CA1050212A/en not_active Expired
-
1975
- 1975-01-29 IT IT67214/75A patent/IT1027406B/it active
- 1975-02-05 FI FI750314A patent/FI750314A7/fi not_active Application Discontinuation
- 1975-02-05 NO NO750369A patent/NO750369L/no unknown
- 1975-02-05 SE SE7501239A patent/SE7501239L/xx unknown
- 1975-02-06 FR FR7503747A patent/FR2282017A1/fr not_active Withdrawn
- 1975-02-06 DE DE19752505004 patent/DE2505004A1/de active Pending
- 1975-02-06 GB GB5048/75A patent/GB1501456A/en not_active Expired
- 1975-02-06 JP JP50015846A patent/JPS5126303A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| SE7501239L (sv) | 1976-02-13 |
| JPS5126303A (enrdf_load_stackoverflow) | 1976-03-04 |
| GB1501456A (en) | 1978-02-15 |
| FR2282017A1 (fr) | 1976-03-12 |
| DE2505004A1 (de) | 1976-02-26 |
| FI750314A7 (enrdf_load_stackoverflow) | 1976-02-13 |
| IT1027406B (it) | 1978-11-20 |
| CA1050212A (en) | 1979-03-13 |
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