DE1517149A1 - Zweistufiges Verfahren zur chemischen Behandlung von Zellstoff in ein und demselben Gefaess - Google Patents
Zweistufiges Verfahren zur chemischen Behandlung von Zellstoff in ein und demselben GefaessInfo
- Publication number
- DE1517149A1 DE1517149A1 DE19641517149 DE1517149A DE1517149A1 DE 1517149 A1 DE1517149 A1 DE 1517149A1 DE 19641517149 DE19641517149 DE 19641517149 DE 1517149 A DE1517149 A DE 1517149A DE 1517149 A1 DE1517149 A1 DE 1517149A1
- Authority
- DE
- Germany
- Prior art keywords
- vessel
- treatment
- sieve belt
- stage
- longitudinal direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000011282 treatment Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 9
- 239000000126 substance Substances 0.000 title description 13
- 239000007788 liquid Substances 0.000 claims description 28
- 239000002657 fibrous material Substances 0.000 claims description 22
- 238000005406 washing Methods 0.000 claims description 21
- 239000002699 waste material Substances 0.000 claims description 14
- 229920003043 Cellulose fiber Polymers 0.000 claims description 5
- 238000004061 bleaching Methods 0.000 claims description 4
- 239000000835 fiber Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 238000010411 cooking Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000011084 recovery Methods 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 239000003245 coal Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 241001083878 Licania tomentosa Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002023 wood 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
- 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
-
- 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
- D21C3/26—Multistage processes
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 |
|---|---|---|---|
| SE1386963 | 1963-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1517149A1 true DE1517149A1 (de) | 1969-03-13 |
Family
ID=20298140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19641517149 Withdrawn DE1517149A1 (de) | 1963-12-13 | 1964-12-11 | Zweistufiges Verfahren zur chemischen Behandlung von Zellstoff in ein und demselben Gefaess |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3425898A (enrdf_load_stackoverflow) |
| DE (1) | DE1517149A1 (enrdf_load_stackoverflow) |
| FI (1) | FI44514B (enrdf_load_stackoverflow) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE325771B (enrdf_load_stackoverflow) * | 1967-06-20 | 1970-07-06 | Svenska Cellulosa Ab | |
| US3874991A (en) * | 1968-08-23 | 1975-04-01 | Westvaco Corp | Polysulfide impregnation of lignocellulosic materials in a continuous digester |
| US5192396A (en) * | 1988-12-20 | 1993-03-09 | Kamyr Ab | Process for the continuous digestion of cellulosic fiber material |
| SE468053B (sv) * | 1988-12-20 | 1992-10-26 | Kamyr Ab | Saett vid kontinuerlig uppslutningskokning av cellulosahaltigt fibermaterial |
| CA2030090A1 (en) * | 1990-08-17 | 1992-02-18 | Bertil Stromberg | Sulfite modified continuous digesting |
| US5489363A (en) * | 1993-05-04 | 1996-02-06 | Kamyr, Inc. | Pulping with low dissolved solids for improved pulp strength |
| US5536366A (en) * | 1993-05-04 | 1996-07-16 | Ahlstrom Machinery Inc. | Digester system for implementing low dissolved solids profiling |
| AU704580B2 (en) * | 1993-05-04 | 1999-04-29 | Kamyr Inc. | Dissolved solids control in pulp protection |
| US6332950B1 (en) * | 1997-06-25 | 2001-12-25 | Kaverner Pulping Ab | Method in connection with the pretreatment of comminuted fibrous material |
| US5985096A (en) * | 1997-09-23 | 1999-11-16 | Ahlstrom Machinery Inc. | Vertical pulping digester having substantially constant diameter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US942403A (en) * | 1908-11-25 | 1909-12-07 | John H Mccoy | Apparatus for distributing building material. |
| US1683262A (en) * | 1927-04-19 | 1928-09-04 | Brown Co | Process of chemically treating and washing pulp |
| US2772138A (en) * | 1952-12-31 | 1956-11-27 | Hercules Powder Co Ltd | Continuous bleaching process |
| US3081218A (en) * | 1960-03-18 | 1963-03-12 | Harold R Ambuehl | Continuous pulping process for the production of paper products |
| US3200032A (en) * | 1961-12-23 | 1965-08-10 | Kamyr Ab | Continuous process for digesting cellulosic material |
| NO115278B (enrdf_load_stackoverflow) * | 1962-03-03 | 1968-09-09 | Kamyr Ab | |
| US3303088A (en) * | 1963-04-19 | 1967-02-07 | Lummus Co | Continuous liquid-phase rapid pulping |
-
1964
- 1964-12-10 FI FI2609/64A patent/FI44514B/fi active
- 1964-12-11 DE DE19641517149 patent/DE1517149A1/de not_active Withdrawn
- 1964-12-14 US US417945A patent/US3425898A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US3425898A (en) | 1969-02-04 |
| FI44514B (enrdf_load_stackoverflow) | 1971-08-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| SH | Request for examination between 03.10.1968 and 22.04.1971 | ||
| E77 | Valid patent as to the heymanns-index 1977 | ||
| EHJ | Ceased/non-payment of the annual fee |