CH112391A - Process for manufacturing cellulose granules. - Google Patents
Process for manufacturing cellulose granules.Info
- Publication number
- CH112391A CH112391A CH112391DA CH112391A CH 112391 A CH112391 A CH 112391A CH 112391D A CH112391D A CH 112391DA CH 112391 A CH112391 A CH 112391A
- Authority
- CH
- Switzerland
- Prior art keywords
- granules
- cellulose granules
- manufacturing cellulose
- cellulose
- manufacturing
- Prior art date
Links
- 229920002678 cellulose Polymers 0.000 title claims description 9
- 239000001913 cellulose Substances 0.000 title claims description 9
- 239000008187 granular material Substances 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 5
- 239000000284 extract Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Description
Procédé de fabrication de granules de cellulose. La présente invention se rapporte à un procédé de fabrication de granules de cellu lose. qui est caractérisé en ce qu'on fait subir à de la sciure de bois calibrée un traitement qui en extrait les lignines .de façon -à laisser la cellulose pure.
On peut, par exemple, procéder comme suit: La sciure de bois est tout d'abord tamisée à travers deux tamis successifs excluant les morceaux trop volumineux (copeaux, bûches, etc.) et les poussières trop fines.
Elle est ensuite traitée au moyen d'une lessive de soude pour .éliminer les lignines du bois de façon à ne laisser subsister que la cellulose. C'est en somme la première opé ration de la fabrication de la pâte ,à papier.
Le résultat de l'opération est -de la cellu lose pure, sous forme de sortes de granules, légers, poreux, homogènes, inattaquables no tamment par l'acétone.
On essore, on sèche et ces granules sont sous ,cette forme particulièrement aptes à l'em magasinage :des gaz dissous. Leur porosité est voisine de 70 %, plutôt moindre; leur lé gèreté grande.
Ils supportent la mise en récipient sous le tassement direct et par bourrage en donnant une répartition absolument égale, sans ,,ta pons". Un kilo peut emplir un récipient de trois litres et recevoir 500 litres de gaz acé tylène dissous, laissant toute liberté de dila tation, mais s'opposant aux crachements si dangereux, non seulement par la gène qu'ils apportent à la sortie du gaz, mais surtout par la diminution de volume et par les vides qui en résultent. Il doit donc être entendu que le traitement pourrait être autre que celui cité et que l'un quelconque des procédés connus pour l'ob tention de pâte à papier, soit à la soude, au bisulfite, etc., en chaudière ou en auto clave, suivant les conditions de travail et la matière mise en jeu, peut -également être em ployé.
Ces granules de cellulose pourront s'em ployer dans bien d'autres applications que celle du barnissabe des bouteilles de gaz dissous.
Process for manufacturing cellulose granules. The present invention relates to a process for manufacturing cellulose granules. which is characterized in that the calibrated sawdust is subjected to a treatment which extracts the lignins therefrom, so as to leave the cellulose pure.
One can, for example, proceed as follows: The sawdust is first of all sieved through two successive sieves excluding pieces that are too bulky (chips, logs, etc.) and dust that is too fine.
It is then treated with a sodium hydroxide solution to eliminate the lignins from the wood so as to leave only the cellulose. In short, it is the first operation in the manufacture of pulp, for paper.
The result of the operation is pure cellulose, in the form of kinds of granules, light, porous, homogeneous, unassailable in particular by acetone.
It is filtered off, dried and these granules are in this form which is particularly suitable for storage: dissolved gases. Their porosity is close to 70%, rather less; their great lightness.
They support placing in a receptacle under direct compaction and by stuffing, giving an absolutely equal distribution, without “ta pons”. One kilo can fill a three-liter receptacle and receive 500 liters of dissolved acetylene gas, leaving complete freedom of dilation, but opposing the so dangerous spitting, not only by the discomfort which they bring to the exit of the gas, but especially by the decrease in volume and by the voids which result from it. It must therefore be understood that the treatment could be other than that cited and that any of the known processes for obtaining paper pulp, either with soda, bisulphite, etc., in a boiler or in an autoclave, depending on the working conditions and the material involved, can also be used.
These cellulose granules can be used in many other applications than that of barnissabe for dissolved gas cylinders.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR112391X | 1923-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH112391A true CH112391A (en) | 1925-11-16 |
Family
ID=8872622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH112391D CH112391A (en) | 1923-11-20 | 1924-10-27 | Process for manufacturing cellulose granules. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH112391A (en) |
-
1924
- 1924-10-27 CH CH112391D patent/CH112391A/en unknown
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