FI79724C - Foerfarande foer kokning av cellulosamaterial - Google Patents
Foerfarande foer kokning av cellulosamaterial Download PDFInfo
- Publication number
- FI79724C FI79724C FI820643A FI820643A FI79724C FI 79724 C FI79724 C FI 79724C FI 820643 A FI820643 A FI 820643A FI 820643 A FI820643 A FI 820643A FI 79724 C FI79724 C FI 79724C
- Authority
- FI
- Finland
- Prior art keywords
- cooking
- liquid
- digester
- boiler
- solution
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 44
- 239000000463 material Substances 0.000 title claims description 21
- 229920002678 cellulose Polymers 0.000 title claims description 16
- 239000001913 cellulose Substances 0.000 title claims description 16
- 238000009835 boiling Methods 0.000 title claims 6
- 238000010411 cooking Methods 0.000 claims description 134
- 239000007788 liquid Substances 0.000 claims description 46
- 239000000706 filtrate Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 8
- 239000000243 solution Substances 0.000 description 79
- 239000000126 substance Substances 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 12
- 239000002023 wood Substances 0.000 description 12
- 230000008901 benefit Effects 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 5
- 229920005610 lignin Polymers 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000009529 body temperature measurement Methods 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- 240000007124 Brassica oleracea Species 0.000 description 1
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 1
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 1
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000019621 digestibility Nutrition 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- -1 hydroxyl ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer 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
- D21C3/00—Pulping cellulose-containing materials
-
- 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
-
- 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
-
- 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
- D21C7/00—Digesters
- D21C7/14—Means for circulating the lye
Landscapes
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24080481A | 1981-03-05 | 1981-03-05 | |
| US24080481 | 1981-03-05 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| FI820643L FI820643L (fi) | 1982-09-06 |
| FI79724B FI79724B (fi) | 1989-10-31 |
| FI79724C true FI79724C (fi) | 1992-12-29 |
Family
ID=22908014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI820643A FI79724C (fi) | 1981-03-05 | 1982-02-25 | Foerfarande foer kokning av cellulosamaterial |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS57176282A (de) |
| BR (1) | BR8201145A (de) |
| CA (1) | CA1179807A (de) |
| FI (1) | FI79724C (de) |
| SE (1) | SE463267B (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7406365D0 (pt) * | 1974-08-02 | 1974-11-19 | Suzano Papel & Celulose | Equipamento e metodo para delignificar materiais fibrosos com solucoes alcalinas |
| CA1079008A (en) * | 1975-10-24 | 1980-06-10 | Cp Associates Limited | Solvent pulping process |
-
1982
- 1982-02-24 CA CA000396961A patent/CA1179807A/en not_active Expired
- 1982-02-25 FI FI820643A patent/FI79724C/fi not_active IP Right Cessation
- 1982-03-04 SE SE8201334A patent/SE463267B/sv not_active Application Discontinuation
- 1982-03-04 BR BR8201145A patent/BR8201145A/pt not_active IP Right Cessation
- 1982-03-04 JP JP57034512A patent/JPS57176282A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR8201145A (pt) | 1983-01-11 |
| JPS57176282A (en) | 1982-10-29 |
| CA1179807A (en) | 1984-12-27 |
| SE463267B (sv) | 1990-10-29 |
| JPH0244957B2 (de) | 1990-10-05 |
| FI79724B (fi) | 1989-10-31 |
| FI820643L (fi) | 1982-09-06 |
| SE8201334L (sv) | 1982-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MA | Patent expired |
Owner name: FAGERLUND, BERTIL |