GB734216A - Process for the treatment of ligno-cellulosic fibres - Google Patents
Process for the treatment of ligno-cellulosic fibresInfo
- Publication number
- GB734216A GB734216A GB2946/53A GB294653A GB734216A GB 734216 A GB734216 A GB 734216A GB 2946/53 A GB2946/53 A GB 2946/53A GB 294653 A GB294653 A GB 294653A GB 734216 A GB734216 A GB 734216A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treatment
- sulphur dioxide
- materials
- mass
- acid
- 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
- 238000011282 treatment Methods 0.000 title abstract 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 239000000463 material Substances 0.000 abstract 5
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 5
- 239000004291 sulphur dioxide Substances 0.000 abstract 5
- 241000609240 Ambelania acida Species 0.000 abstract 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 239000010905 bagasse Substances 0.000 abstract 2
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 abstract 2
- 235000011121 sodium hydroxide Nutrition 0.000 abstract 2
- 239000010902 straw Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000002023 wood Substances 0.000 abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 244000166124 Eucalyptus globulus Species 0.000 abstract 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 238000002419 base digestion Methods 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 239000012978 lignocellulosic material Substances 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 abstract 1
- 239000004289 sodium hydrogen sulphite Substances 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
- D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
-
- 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
- D21C1/00—Pretreatment of the finely-divided materials before digesting
- D21C1/04—Pretreatment of the finely-divided materials before digesting with acid reacting compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Fibrous ligno-cellulosic materials such as wood chips, bagasse or straw are treated, prior to alkali digestion, with steam at atmospheric pressure and at a temperature of substantially 100 DEG C., the steam containing sulphur dioxide and the treatment being carried out under such conditions that the quantity of dilute sulphurous acid condensed on the materials is so small, in relation to the amount of the materials, that substantially no flow of such dilute sulphurous acid occurs over the surfaces of the particles of the materials. The apparatus may consist of an autoclave for discontinuous treatment or of a tall column for continuous treatment. The proportion of sulphur dioxide may be 1-3 per cent, calculated on the dry material treated. In an example 100 kg. of eucalyptus wood chips (dry weight) containing 15 per cent of water are charged into a pressure cooker provided with a heat-insulating jacket, the air therein is partially exhausted and 2.5 kg. of gaseous sulphur dioxide is injected together with sufficient steam to increase the temperature to 100 DEG C. The mass is maintained at 100 DEG C. for 2-3 hours, during which time the water content of the chips increases to 40-50 per cent but no flow of condensate occurs over the chips. The pressure cooker is exhausted to remove the residual free sulphur dioxide, and the lignosulphonic acid formed during the treatment is neutralized and dissolved by the addition of black liquor from a previous cycle of operations. The mass is heated to 100 DEG C., drained and covered with an aqueous solution of caustic soda (110 g. per litre). Part of the caustic soda may be replaced by sodium sulphide. The mass is heated to 160-170 DEG C. for 1.2 hours, drained and washed. The black liquor thereby obtained is used for the neutralization of the next batch of hydrolized cellulosic material. The treated pulp may be bleached, e.g. by two or three treatments with chlorine in an acid medium followed by hypochlorite in an alkaline medium. Examples are given of the similar treatment of bagasse and chopped straw. The sulphur dioxide may be generated in situ in the cooker, e.g. by charging the cooker with aqueous solutions of sodium bisulphite and sulphuric acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1005824X | 1952-02-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB734216A true GB734216A (en) | 1955-07-27 |
Family
ID=9565170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2946/53A Expired GB734216A (en) | 1952-02-15 | 1953-02-02 | Process for the treatment of ligno-cellulosic fibres |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1005824B (en) |
| FR (1) | FR1052900A (en) |
| GB (1) | GB734216A (en) |
| NL (1) | NL87584C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049390A1 (en) * | 1997-04-28 | 1998-11-05 | Almeida Oliveira Baptista Joao | A wood delignification chemical process using ammonium magnesium bisulphite as the active reagent |
| RU2233927C1 (en) * | 2003-07-29 | 2004-08-10 | Закрытое акционерное общество "Картонтара" | Method for manufacture of high-yield fibrous semi-finished product |
| WO2013164598A1 (en) * | 2012-05-02 | 2013-11-07 | Innovia Films Limited | Process |
| EP3901367A1 (en) * | 2020-04-20 | 2021-10-27 | Scitech-service OY | Method for prehydrolysis of lignocellulosic material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA766073B (en) * | 1975-10-24 | 1977-09-28 | D Econimidis | Production of pulp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE124556C (en) * | ||||
| DE237081C (en) * | 1909-12-13 | |||
| DE395119C (en) * | 1923-10-11 | 1924-05-14 | Carl G Schwalbe Dr | Process for the pretreatment of vegetable raw materials to facilitate the subsequent acidic or alkaline digestion |
| DE484805C (en) * | 1924-11-02 | 1929-11-11 | Leopold Enge | Process for softening wood or similar vegetable fibers |
| DE744868C (en) * | 1940-03-22 | 1944-01-27 | Dr Georg Jayme | Process for the production of low-pentosan cellulose from plant matter |
| BE447209A (en) * | 1941-12-22 |
-
0
- NL NL87584D patent/NL87584C/xx active
-
1952
- 1952-02-15 FR FR1052900D patent/FR1052900A/en not_active Expired
-
1953
- 1953-02-02 GB GB2946/53A patent/GB734216A/en not_active Expired
- 1953-02-13 DE DES32188A patent/DE1005824B/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998049390A1 (en) * | 1997-04-28 | 1998-11-05 | Almeida Oliveira Baptista Joao | A wood delignification chemical process using ammonium magnesium bisulphite as the active reagent |
| RU2233927C1 (en) * | 2003-07-29 | 2004-08-10 | Закрытое акционерное общество "Картонтара" | Method for manufacture of high-yield fibrous semi-finished product |
| WO2013164598A1 (en) * | 2012-05-02 | 2013-11-07 | Innovia Films Limited | Process |
| CN104321347A (en) * | 2012-05-02 | 2015-01-28 | 伊诺维亚薄膜有限公司 | Process |
| JP2015517582A (en) * | 2012-05-02 | 2015-06-22 | イノヴィア フィルムズ リミテッド | Method |
| US9493581B2 (en) | 2012-05-02 | 2016-11-15 | Innovia Films Limited | Process for the manufacture of viscose |
| EP3901367A1 (en) * | 2020-04-20 | 2021-10-27 | Scitech-service OY | Method for prehydrolysis of lignocellulosic material |
| WO2021214387A1 (en) * | 2020-04-20 | 2021-10-28 | Scitech-Service Oy | Method for prehydrolysis of lignocellulosic material |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1005824B (en) | 1957-04-04 |
| FR1052900A (en) | 1954-01-28 |
| NL87584C (en) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB427626A (en) | Improvements in or relating to the manufacture of cellulose | |
| GB734216A (en) | Process for the treatment of ligno-cellulosic fibres | |
| GB576510A (en) | Improvements in or relating to the production of cellulose | |
| US1640853A (en) | Process of producing pulp having a high percentage of resistant cellulose | |
| US1880043A (en) | Production of high grade chemical pulps | |
| GB841429A (en) | Chemical lignocellulose pulping process and product | |
| US1870650A (en) | Chemical modification of cellulose fiber | |
| US3578553A (en) | Nitrogen dioxide pulping process | |
| GB815247A (en) | Bleaching woob pulps | |
| US1817525A (en) | Production of chemical wood pulp | |
| GB710257A (en) | Wood pulp | |
| GB1301031A (en) | Pulp and a process for the production thereof | |
| GB474305A (en) | Improvements in or relating to the manufacture of cellulose from lignocellulosic materials | |
| US2407909A (en) | Purification of crude cellulosic material | |
| GB640543A (en) | Improvements in or relating to the production of cellulose | |
| US1867593A (en) | Process of chemical fiber liberation | |
| US1880047A (en) | Pulp refining process | |
| US2118039A (en) | Manufacture of cellulose | |
| US1910613A (en) | Preliminary boiling or cooking process for cellulose | |
| RU2811694C1 (en) | Method for producing fibrous cellulose from hemp | |
| GB322763A (en) | Method of manufacturing cellulose | |
| GB674079A (en) | Improvements in or relating to a process for the production of fibre plates and formed bodies of lignocellulosic materials using the lignin of the lignocellulosic materials as a binding agent | |
| US2536045A (en) | Producing alpha cellulsoe from cottonseed hull fibers | |
| GB477842A (en) | Improvements in or relating to the manufacture of cellulose from lignin-containing cellulosic materials | |
| US1819003A (en) | Multiple-step process of fiber liberation |