GB1253234A - - Google Patents
Info
- Publication number
- GB1253234A GB1253234A GB5057368A GB1253234DA GB1253234A GB 1253234 A GB1253234 A GB 1253234A GB 5057368 A GB5057368 A GB 5057368A GB 1253234D A GB1253234D A GB 1253234DA GB 1253234 A GB1253234 A GB 1253234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bleaching
- washing
- pulp
- chlorine
- sodium hypochlorite
- 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
- 238000004061 bleaching Methods 0.000 abstract 4
- 238000005406 washing Methods 0.000 abstract 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 239000005708 Sodium hypochlorite Substances 0.000 abstract 3
- 239000000460 chlorine Substances 0.000 abstract 3
- 229910052801 chlorine Inorganic materials 0.000 abstract 3
- 238000012216 screening Methods 0.000 abstract 3
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 2
- 238000005660 chlorination reaction Methods 0.000 abstract 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract 2
- 238000000605 extraction Methods 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 239000002023 wood Substances 0.000 abstract 2
- 241000609240 Ambelania acida Species 0.000 abstract 1
- 239000004155 Chlorine dioxide Substances 0.000 abstract 1
- 229920000875 Dissolving pulp Polymers 0.000 abstract 1
- 239000010905 bagasse Substances 0.000 abstract 1
- 235000019398 chlorine dioxide Nutrition 0.000 abstract 1
- 238000010411 cooking Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000413 hydrolysate Substances 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 1
- 239000004291 sulphur dioxide Substances 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
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
-
- 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
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681803453 DE1803453A1 (de) | 1968-10-16 | 1968-10-16 | Verfahren zur Gewinnung von Cellulose aus Bagasse fuer die Herstellung von Fasern und Faeden |
| GB5057368 | 1968-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1253234A true GB1253234A (cs) | 1971-11-10 |
Family
ID=32963170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5057368A Expired GB1253234A (cs) | 1968-10-16 | 1968-10-24 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1253234A (cs) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118223A (en) * | 1982-03-23 | 1983-10-26 | Mahindra Kumar Makhija | Pulp manufacture |
| EP1402092A4 (en) * | 2001-04-24 | 2004-08-04 | Weyerhaeuser Co | ALKALINE CUTTER FROM SAW MILL WITH A SMALL MEDIUM POLYMERIZATION LEVEL AND METHOD FOR THE PRODUCTION THEREOF |
-
1968
- 1968-10-24 GB GB5057368A patent/GB1253234A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2118223A (en) * | 1982-03-23 | 1983-10-26 | Mahindra Kumar Makhija | Pulp manufacture |
| US6861023B2 (en) | 1996-08-23 | 2005-03-01 | Weyerhaeuser Company | Process for making lyocell fiber from sawdust pulp |
| US7090744B2 (en) | 1996-08-23 | 2006-08-15 | Weyerhaeuser Company | Process for making composition for conversion to lyocell fiber from sawdust |
| EP1402092A4 (en) * | 2001-04-24 | 2004-08-04 | Weyerhaeuser Co | ALKALINE CUTTER FROM SAW MILL WITH A SMALL MEDIUM POLYMERIZATION LEVEL AND METHOD FOR THE PRODUCTION THEREOF |
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| GB1253234A (cs) | ||
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| SE311109B (cs) | ||
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |