GB1100709A - Two-stage purification of fibrous cellulose material - Google Patents
Two-stage purification of fibrous cellulose materialInfo
- Publication number
- GB1100709A GB1100709A GB27158/65A GB2715865A GB1100709A GB 1100709 A GB1100709 A GB 1100709A GB 27158/65 A GB27158/65 A GB 27158/65A GB 2715865 A GB2715865 A GB 2715865A GB 1100709 A GB1100709 A GB 1100709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulp
- weight
- stage
- consistency
- treated
- 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
- 229920002678 cellulose Polymers 0.000 title 1
- 239000001913 cellulose Substances 0.000 title 1
- 239000000463 material Substances 0.000 title 1
- 238000000746 purification Methods 0.000 title 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 abstract 2
- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 abstract 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 2
- 239000004342 Benzoyl peroxide Substances 0.000 abstract 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 abstract 1
- 239000004155 Chlorine dioxide Substances 0.000 abstract 1
- 235000019400 benzoyl peroxide Nutrition 0.000 abstract 1
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 239000002655 kraft paper Substances 0.000 abstract 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052753 mercury Inorganic materials 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 abstract 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 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
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
- D21C9/144—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites with ClO2/Cl2 and other bleaching agents in a multistage process
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Pulp, e.g. pulp obtained by the kraft and sulphite processes, is bleached by a process in which in a first stage the fluffed cellulosic pulp at a consistency of 20-60% by weight is treated with chlorine dioxide diluted to less than 100 m.m. mercury partial pressure with air, steam or an inert gas, e.g. nitrogen, for from 20 seconds to 60 minutes at 15 DEG -100 DEG C, is washed and in a second stage is treated at a consistency of 5-50% by weight with a solution of a peroxygen compound, e.g. sodium peroxide, benzoyl peroxide, peracetic acid or hydrogen peroxide, having a peroxygen equivalency of 0.025-1.5% by weight of the dry pulp, at a temperature up to 100 DEG C for 1/2 -5 hours.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27158/65A GB1100709A (en) | 1965-06-25 | 1965-06-25 | Two-stage purification of fibrous cellulose material |
| US884749A US3655505A (en) | 1965-06-25 | 1969-12-12 | Two-stage purification of fibrous cellulose material employing gaseous chlorine dioxide in one stage and a peroxygen compound in the other |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB27158/65A GB1100709A (en) | 1965-06-25 | 1965-06-25 | Two-stage purification of fibrous cellulose material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1100709A true GB1100709A (en) | 1968-01-24 |
Family
ID=10255139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27158/65A Expired GB1100709A (en) | 1965-06-25 | 1965-06-25 | Two-stage purification of fibrous cellulose material |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3655505A (en) |
| GB (1) | GB1100709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3937932A1 (en) * | 1989-11-15 | 1991-05-16 | Holtzmann & Cie Ag E | Delignification and bleaching of pulp with alkali chlorite - by adding chlorite before acidification to produce nascent reagent, minimising pollution |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA989112A (en) * | 1972-05-30 | 1976-05-18 | Pulp And Paper Research Institute Of Canada | Bleaching of textiles with chlorine monoxide |
| SE426607B (en) * | 1982-03-29 | 1983-01-31 | Kamyr Ab | WANT TO TREAT A MASS PENSION SUSPENDED ALONG A BORN MIDDLE REPRESENTATION OF THE MASS SUSPENSION FLUID WITH ONE OR MORE REPLACEMENT WETS |
| CA1251903A (en) * | 1985-06-17 | 1989-04-04 | Pulp And Paper Research Institute Of Canada | Alkaline-peroxide-oxygen treatment of unbleached and chlorinated chemical pulps |
| SE9000340L (en) * | 1990-01-31 | 1991-08-01 | Eka Nobel Ab | PROCEDURES FOR BLACKING OF LIGNOCELLULOSALLY MATERIAL |
| AU655842B2 (en) * | 1991-08-23 | 1995-01-12 | Olin Corporation | Delignifying wood pulp |
| US5876561A (en) * | 1992-02-28 | 1999-03-02 | International Paper Company | Post digestion treatment of cellulosic pulp to minimize formation of dioxin |
| SE514697C2 (en) * | 1994-08-31 | 2001-04-02 | Valmet Fibertech Ab | Elimination of metal ions in pulp bleaching |
| BR102014016692A2 (en) * | 2014-07-04 | 2016-03-29 | Univ Estadual Paulista Julio D | pulp bleaching process and pulp production |
| US11591751B2 (en) | 2019-09-17 | 2023-02-28 | Gpcp Ip Holdings Llc | High efficiency fiber bleaching process |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2516384A (en) * | 1942-01-15 | 1950-07-25 | Hill Harold Sanford | Mechanically curling cellulose fibers |
| US2730426A (en) * | 1951-06-20 | 1956-01-10 | Cellulose Dev Corp Ltd | Treating vegetable fibrous material with chlorine gas |
| US3020197A (en) * | 1960-08-05 | 1962-02-06 | Allied Chem | Method for production of high brightness high strength wood pulps |
| SE317864B (en) * | 1963-10-05 | 1969-11-24 | Svenska Cellulosa Ab | |
| US3433702A (en) * | 1965-06-28 | 1969-03-18 | Hooker Chemical Corp | Woodpulp bleaching process |
| US3345250A (en) * | 1966-06-30 | 1967-10-03 | Int Paper Co | Bleaching pulp without direct chlorination by bleaching with chlorine dioxide |
-
1965
- 1965-06-25 GB GB27158/65A patent/GB1100709A/en not_active Expired
-
1969
- 1969-12-12 US US884749A patent/US3655505A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3937932A1 (en) * | 1989-11-15 | 1991-05-16 | Holtzmann & Cie Ag E | Delignification and bleaching of pulp with alkali chlorite - by adding chlorite before acidification to produce nascent reagent, minimising pollution |
Also Published As
| Publication number | Publication date |
|---|---|
| US3655505A (en) | 1972-04-11 |
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