GB1343126A - Bleaching of lignocellulosic material - Google Patents
Bleaching of lignocellulosic materialInfo
- Publication number
- GB1343126A GB1343126A GB73371A GB73371A GB1343126A GB 1343126 A GB1343126 A GB 1343126A GB 73371 A GB73371 A GB 73371A GB 73371 A GB73371 A GB 73371A GB 1343126 A GB1343126 A GB 1343126A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vessel
- pulp
- oxygen
- lignocellulosic
- continuously
- 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.)
- Expired
Links
- 239000012978 lignocellulosic material Substances 0.000 title abstract 4
- 238000004061 bleaching Methods 0.000 title abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 10
- 239000001301 oxygen Substances 0.000 abstract 10
- 229910052760 oxygen Inorganic materials 0.000 abstract 10
- 239000007789 gas Substances 0.000 abstract 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000920 calcium hydroxide Substances 0.000 abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000007900 aqueous suspension Substances 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 abstract 1
- 239000000347 magnesium hydroxide Substances 0.000 abstract 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000003134 recirculating effect Effects 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA71726 | 1970-01-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1343126A true GB1343126A (en) | 1974-01-10 |
Family
ID=4086157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB73371A Expired GB1343126A (en) | 1970-01-08 | 1971-01-07 | Bleaching of lignocellulosic material |
Country Status (11)
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3830473A (en) * | 1973-02-22 | 1974-08-20 | Standard Brands Inc | Starch paste apparatus |
| US4079603A (en) * | 1973-10-16 | 1978-03-21 | Niels Bergholtz & Company K/B | Apparatus for liquid treatment, particularly for textile material dyeing |
| US4062722A (en) * | 1974-01-18 | 1977-12-13 | Carlos Ibanez Ajuria | Device for treating deformable particles with the counterflowing liquids |
| NO138491B (no) * | 1974-04-17 | 1978-06-05 | Per Kock Christensen | Fremgangsmaate ved delignifisering og bleking av cellulosemasse |
| FI58360C (fi) * | 1974-06-14 | 1981-01-12 | Mo Och Domsjoe Ab | Foerfarande foer delignifiering av lignocellulosahaltigt material med hjaelp av syreinnehaollande gas och apparatur foer utfoerande av detta foerfarande |
| JPS5126302A (en) * | 1974-08-22 | 1976-03-04 | Hitachi Shipbuilding Eng Co | Sansoganjugasunyoru seruroosubutsushitsuno shorihoho |
| US3966542A (en) * | 1974-09-20 | 1976-06-29 | General Signal Corporation | Multi-stage bleaching of pulp using successively lower power levels |
| US4048007A (en) * | 1975-05-14 | 1977-09-13 | The Dow Chemical Company | Method of removing solvent residues from aqueous paper pulps |
| SU591539A1 (ru) * | 1975-10-03 | 1978-02-05 | Всесоюзное научно-производственное объединение целлюлозно-бумажной промышленности | Установка дл обработки лигноцеллюлозного материала |
| NO137651C (no) * | 1975-10-31 | 1978-03-29 | Myrens Verksted As | Fremgangsmaate og apparat til kontinuerlig behandling av findelt fibermateriale eller celluloseholdig masse med gass uten overtrykk. |
| US4198266A (en) * | 1977-10-12 | 1980-04-15 | Airco, Inc. | Oxygen delignification of wood pulp |
| US4259150A (en) * | 1978-12-18 | 1981-03-31 | Kamyr Inc. | Plural stage mixing and thickening oxygen bleaching process |
| US4435249A (en) | 1979-09-05 | 1984-03-06 | The Black Clawson Co. | Process for the oxygen delignification of pulp mill rejects |
| US4363697A (en) * | 1979-12-03 | 1982-12-14 | The Black Clawson Company | Method for medium consistency oxygen delignification of pulp |
| ZA816105B (en) * | 1980-09-05 | 1982-09-29 | Black Clawson Co | Process and apparatus for the delignification of pulp |
| US4405063A (en) * | 1981-02-27 | 1983-09-20 | Nordson Corporation | Method and apparatus for controlling the density of dispensed hot melt thermoplastic adhesive foam |
| ZA821923B (en) * | 1981-04-06 | 1983-02-23 | Black Clawson Co | Method and apparatus for oxygen delignification |
| US4384920A (en) * | 1981-04-06 | 1983-05-24 | The Black Clawson Company | Method and apparatus for oxygen delignification |
| US6340409B1 (en) * | 1993-04-29 | 2002-01-22 | Lewis Donald Shackford | Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release |
| SE9402542D0 (sv) * | 1994-07-20 | 1994-07-20 | Kvaerner Pulping Tech | Förfarande och anordning vid blekning med trycksatt peroxid |
| DE19626200C2 (de) * | 1996-06-29 | 2001-02-01 | Voith Sulzer Stoffaufbereitung | Verfahren zur Erhöhung des Weißgrades von Altpapierfaserstoff |
| US6153050A (en) * | 1998-03-24 | 2000-11-28 | Noranda Forest Inc. | Method and system for controlling the addition of bleaching reagents to obtain a substantially constant percentage of pulp delignification across the first bleaching/delignifying stage |
| AU2001247344A1 (en) * | 2000-03-13 | 2001-09-24 | The University Of Akron | Method and apparatus of mixing fibers |
| US9512560B2 (en) * | 2014-10-31 | 2016-12-06 | Quantum Technologies, Inc. | Short oxygen delignification method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1044185A (en) * | 1908-05-01 | 1912-11-12 | Eugene D Jefferson | Bleaching apparatus. |
| US2121324A (en) * | 1936-06-23 | 1938-06-21 | Texas Co | Liquid level control apparatus |
| US2730888A (en) * | 1952-12-31 | 1956-01-17 | Hercules Powder Co Ltd | Apparatus for treating pulp with liquid |
| US3130076A (en) * | 1961-09-29 | 1964-04-21 | American Cyanamid Co | Continuous vinyl grafting of cellulose |
| US3134384A (en) * | 1963-05-20 | 1964-05-26 | Improved Machinery Inc | Downflow countercurrent washing apparatus |
| CA834629A (en) * | 1966-09-30 | 1970-02-17 | Amiel W. Brinkley, Jr. | Rapid high consistency bleaching of pulp |
| US3587257A (en) * | 1967-10-16 | 1971-06-28 | Stadler Hurter International L | Bleaching system including a single,triple-deck table washer |
-
1970
- 1970-01-08 CA CA918978A patent/CA918978A/en not_active Expired
- 1970-09-10 FI FI702495A patent/FI52746C/fi active
- 1970-12-10 ZA ZA708365A patent/ZA708365B/xx unknown
- 1970-12-10 AU AU23230/70A patent/AU2323070A/en not_active Expired
- 1970-12-10 US US00096949A patent/US3754417A/en not_active Expired - Lifetime
- 1970-12-15 NO NO04820/70A patent/NO130068B/no unknown
- 1970-12-29 FR FR7046990A patent/FR2075111A5/fr not_active Expired
- 1970-12-29 BR BR225003/70A patent/BR7025003D0/pt unknown
-
1971
- 1971-01-07 GB GB73371A patent/GB1343126A/en not_active Expired
- 1971-01-08 DE DE19712100703 patent/DE2100703A1/de active Pending
- 1971-01-08 AT AT11371A patent/AT305015B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI52746B (enrdf_load_stackoverflow) | 1977-08-01 |
| US3754417A (en) | 1973-08-28 |
| FI52746C (fi) | 1977-11-10 |
| ZA708365B (en) | 1972-07-26 |
| AU2323070A (en) | 1972-06-15 |
| CA918978A (en) | 1973-01-16 |
| DE2100703A1 (de) | 1971-07-15 |
| NO130068B (enrdf_load_stackoverflow) | 1974-07-01 |
| AT305015B (de) | 1973-02-12 |
| BR7025003D0 (pt) | 1973-01-18 |
| FR2075111A5 (enrdf_load_stackoverflow) | 1971-10-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |