GB596164A - Methods of utilising effluents from the chemical treatment of cellulosic raw material - Google Patents
Methods of utilising effluents from the chemical treatment of cellulosic raw materialInfo
- Publication number
- GB596164A GB596164A GB1883545A GB1883545A GB596164A GB 596164 A GB596164 A GB 596164A GB 1883545 A GB1883545 A GB 1883545A GB 1883545 A GB1883545 A GB 1883545A GB 596164 A GB596164 A GB 596164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treated
- effluents
- utilising
- methods
- raw material
- 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
- 239000002994 raw material Substances 0.000 title 1
- 239000000126 substance Substances 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000015450 Tilia cordata Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 230000029087 digestion Effects 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000010902 straw Substances 0.000 abstract 2
- WBHQBSYUUJJSRZ-UHFFFAOYSA-M Sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 239000003518 caustics Substances 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000001187 sodium carbonate Substances 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 239000005418 vegetable material 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
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
Landscapes
- Paper (AREA)
Abstract
An improvement in the process for the production of pulp from raw cellulosic vegetable material according to the parent Specification, comprises the causticization of the alkaline effluent with lime, the causticized effluent being used for digestion of the acid pre-treated material without the addition of fresh caustic alkali. In an example, straw is pre-treated in a continuous way with boiling sodium bisulphate of 1 1/2 per cent concentration in a ratio of 1 to 8. It is then washed. A dilute black liquor containing 4.0 grams per litre sodium hydroxide and 4.3 g./litre sodium carbonate is treated with a 10 per cent excess of lime and filtered. The filtrate, containing 6.9 g./litre sodium hydroxide, is used for the digestion of the washed pre-treated straw.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB596164A true GB596164A (en) | 1947-12-30 |
Family
ID=1734233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1883545A Expired GB596164A (en) | 1945-07-23 | Methods of utilising effluents from the chemical treatment of cellulosic raw material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB596164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3055794A (en) * | 1955-12-01 | 1962-09-25 | Stora Kopparbergs Bergslags Ab | Method of deresinifying cellulose derived from wood rich in resin |
-
1945
- 1945-07-23 GB GB1883545A patent/GB596164A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3055794A (en) * | 1955-12-01 | 1962-09-25 | Stora Kopparbergs Bergslags Ab | Method of deresinifying cellulose derived from wood rich in resin |
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