NO120251B - - Google Patents
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- Publication number
- NO120251B NO120251B NO161391A NO16139166A NO120251B NO 120251 B NO120251 B NO 120251B NO 161391 A NO161391 A NO 161391A NO 16139166 A NO16139166 A NO 16139166A NO 120251 B NO120251 B NO 120251B
- Authority
- NO
- Norway
- Prior art keywords
- liquid
- solution
- pulp
- liquor
- alkaline extraction
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 64
- 238000000605 extraction Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000004061 bleaching Methods 0.000 claims abstract description 19
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001913 cellulose Substances 0.000 claims abstract description 11
- 229920002678 cellulose Polymers 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims abstract description 6
- 239000000460 chlorine Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000013049 sediment Substances 0.000 claims description 22
- 239000000243 solution Substances 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 13
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 12
- 239000002244 precipitate Substances 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 8
- 239000004155 Chlorine dioxide Substances 0.000 claims description 6
- 241001062472 Stokellia anisodon Species 0.000 claims description 6
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 4
- 229910001902 chlorine oxide Inorganic materials 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract description 7
- 229910021653 sulphate ion Inorganic materials 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 5
- 239000002023 wood Substances 0.000 abstract description 4
- 229910052801 chlorine Inorganic materials 0.000 abstract description 3
- 241000609240 Ambelania acida Species 0.000 abstract 1
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 239000010905 bagasse Substances 0.000 abstract 1
- 239000002657 fibrous material Substances 0.000 abstract 1
- 239000010902 straw Substances 0.000 abstract 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 17
- 235000011941 Tilia x europaea Nutrition 0.000 description 17
- 239000004571 lime Substances 0.000 description 17
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- 150000002894 organic compounds Chemical class 0.000 description 6
- 238000010411 cooking Methods 0.000 description 5
- 159000000000 sodium salts Chemical class 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000005352 clarification Methods 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 235000005985 organic acids Nutrition 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 description 4
- 235000011152 sodium sulphate Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 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 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 201000004624 Dermatitis Diseases 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- -1 organic acid salts Chemical class 0.000 description 1
- 230000021962 pH elevation Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/12—Combustion of pulp liquors
- D21C11/122—Treatment, e.g. dissolution, of the smelt
-
- 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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3130/65A GB1106841A (en) | 1965-01-25 | 1965-01-25 | Process for the production of bleached pulp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO120251B true NO120251B (enrdf_load_html_response) | 1970-09-21 |
Family
ID=9752494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO161391A NO120251B (enrdf_load_html_response) | 1965-01-25 | 1966-01-24 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT265005B (enrdf_load_html_response) |
| CS (1) | CS157014B2 (enrdf_load_html_response) |
| ES (1) | ES322174A1 (enrdf_load_html_response) |
| FI (1) | FI43947C (enrdf_load_html_response) |
| NO (1) | NO120251B (enrdf_load_html_response) |
| SE (1) | SE315192B (enrdf_load_html_response) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE8704041L (sv) * | 1987-10-16 | 1989-04-17 | Sca Development Ab | Saett vid blekning av cellulosamassa |
-
1966
- 1966-01-21 FI FI660161A patent/FI43947C/fi active
- 1966-01-24 SE SE885/66A patent/SE315192B/xx unknown
- 1966-01-24 NO NO161391A patent/NO120251B/no unknown
- 1966-01-24 CS CS44666*BA patent/CS157014B2/cs unknown
- 1966-01-24 ES ES0322174A patent/ES322174A1/es not_active Expired
- 1966-01-25 AT AT69166A patent/AT265005B/de active
Also Published As
| Publication number | Publication date |
|---|---|
| FI43947B (enrdf_load_html_response) | 1971-03-31 |
| ES322174A1 (es) | 1966-11-01 |
| CS157014B2 (enrdf_load_html_response) | 1974-08-23 |
| SE315192B (enrdf_load_html_response) | 1969-09-22 |
| AT265005B (de) | 1968-09-25 |
| FI43947C (fi) | 1971-07-12 |
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