NO120660B - - Google Patents
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- Publication number
- NO120660B NO120660B NO3610/68A NO361068A NO120660B NO 120660 B NO120660 B NO 120660B NO 3610/68 A NO3610/68 A NO 3610/68A NO 361068 A NO361068 A NO 361068A NO 120660 B NO120660 B NO 120660B
- Authority
- NO
- Norway
- Prior art keywords
- fraction
- chip
- boiler
- chips
- line
- Prior art date
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 229920002678 cellulose Polymers 0.000 claims description 9
- 239000001913 cellulose Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 9
- 238000009835 boiling Methods 0.000 claims description 8
- 238000002203 pretreatment Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 4
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims 1
- 238000010411 cooking Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 230000032258 transport Effects 0.000 description 7
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 241000036848 Porzana carolina Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000005406 washing 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
- D21C3/22—Other features of pulping processes
Landscapes
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE12803/67A SE305582B (fi) | 1967-09-18 | 1967-09-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO120660B true NO120660B (fi) | 1970-11-16 |
Family
ID=20296327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO3610/68A NO120660B (fi) | 1967-09-18 | 1968-09-13 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3578554A (fi) |
| BR (1) | BR6802420D0 (fi) |
| DE (1) | DE1792540C2 (fi) |
| FI (1) | FI47390C (fi) |
| FR (1) | FR1583131A (fi) |
| NO (1) | NO120660B (fi) |
| SE (1) | SE305582B (fi) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830689A (en) * | 1968-11-19 | 1974-08-20 | Metsaluton Selluloosa Oy | Separate impregnation and common digestion of different wooden raw materials |
| US4152197A (en) * | 1974-09-23 | 1979-05-01 | Mo Och Domsjo Ab | Process for preparing high-yield cellulose pulps by vapor phase pulping an unpulped portion of lignocellulosic material and a partially chemically pulped portion |
| US4096027A (en) * | 1976-02-19 | 1978-06-20 | Kamyr Inc. | System for presteaming wood chips at or near atmospheric pressure with minimum displacement of air |
| US4123318A (en) * | 1976-06-29 | 1978-10-31 | Kamyr, Inc. | Three-vessel treatment system |
| SE416481B (sv) * | 1977-05-02 | 1981-01-05 | Mo Och Domsjoe Ab | Fofarande och anordning for behandling av vedflis for avlegsnande av tungmetaller och harts |
| SE8502210L (sv) * | 1985-05-06 | 1986-11-07 | Sunds Defibrator | Framstellning av mekanisk massa |
| US5213662A (en) * | 1991-08-14 | 1993-05-25 | Kamyr, Inc. | Treatment of chips with high temperature black liquor to reduce black liquor viscosity |
| SE502134C2 (sv) * | 1994-02-10 | 1995-08-28 | Kvaerner Pulping Tech | Optimering av vätske/ved-förhållande i förimpregneringskärl och kontinuerlig kokare vid framställning av kemisk massa |
| US5795438A (en) * | 1996-11-04 | 1998-08-18 | Ahlstrom Machinery Inc. | Method and apparatus for feeding multiple digesters |
| US5882477A (en) * | 1997-02-10 | 1999-03-16 | Ahlstrom Machinery, Inc. | Continuous digester with a low temperature gas-phase |
| US6186373B1 (en) | 1998-04-06 | 2001-02-13 | Andritz-Ahlstrom Inc. | Hopper, or bin, screw feeder construction controlling discharge velocity profile |
| US20020129911A1 (en) * | 2000-10-16 | 2002-09-19 | Marcoccia Bruno S. | Process and configuration for providing external upflow/internal downflow in a continuous digester |
| SE518789C2 (sv) * | 2001-05-04 | 2002-11-19 | Kvaerner Pulping Tech | System för matning av flis till flisfickor |
| US8951388B2 (en) * | 2011-04-08 | 2015-02-10 | Pec-Tech Engineering And Construction Pte Ltd | Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2948336A (en) * | 1955-06-06 | 1960-08-09 | Pandia Inc | Continuous digester |
-
1967
- 1967-09-18 SE SE12803/67A patent/SE305582B/xx unknown
-
1968
- 1968-09-13 NO NO3610/68A patent/NO120660B/no unknown
- 1968-09-16 FI FI682597A patent/FI47390C/fi active
- 1968-09-17 DE DE1792540A patent/DE1792540C2/de not_active Expired
- 1968-09-18 FR FR1583131D patent/FR1583131A/fr not_active Expired
- 1968-09-18 US US760486A patent/US3578554A/en not_active Expired - Lifetime
- 1968-09-18 BR BR202420/68A patent/BR6802420D0/pt unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1792540B1 (de) | 1972-05-31 |
| US3578554A (en) | 1971-05-11 |
| FI47390B (fi) | 1973-07-31 |
| FI47390C (fi) | 1973-11-12 |
| BR6802420D0 (pt) | 1973-06-07 |
| SE305582B (fi) | 1968-10-28 |
| DE1792540C2 (de) | 1973-01-04 |
| FR1583131A (fi) | 1969-10-17 |
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