DE30072C - Treatment of fibrous materials with! Solution of sulphurous acid, which is mixed with hydrochloric and acetic acid to increase its effectiveness - Google Patents
Treatment of fibrous materials with! Solution of sulphurous acid, which is mixed with hydrochloric and acetic acid to increase its effectivenessInfo
- Publication number
- DE30072C DE30072C DENDAT30072D DE30072DA DE30072C DE 30072 C DE30072 C DE 30072C DE NDAT30072 D DENDAT30072 D DE NDAT30072D DE 30072D A DE30072D A DE 30072DA DE 30072 C DE30072 C DE 30072C
- Authority
- DE
- Germany
- Prior art keywords
- acid
- hydrochloric
- effectiveness
- treatment
- solution
- 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 - Lifetime
Links
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title claims description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 title claims description 7
- 239000002657 fibrous material Substances 0.000 title description 2
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 238000007380 fibre production Methods 0.000 claims 1
- 235000013311 vegetables Nutrition 0.000 claims 1
- 150000008043 acidic salts Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 210000003165 Abomasum Anatomy 0.000 description 1
- 235000011777 Corchorus aestuans Nutrition 0.000 description 1
- 240000000491 Corchorus aestuans Species 0.000 description 1
- 235000010862 Corchorus capsularis Nutrition 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001404 mediated Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 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
Landscapes
- Paper (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT. VSPATENT OFFICE. VS
Bisher gelang die Aufschliefsung von Faserstoffen nur, wenn man die schweflige Säure in Form ihrer zweifach sauren Salze oder in übersättigten Lösungen anwendete.So far, the digestion of fibrous materials has only been possible if the sulphurous acid is used used in the form of their doubly acidic salts or in supersaturated solutions.
Bei dem vorliegenden Verfahren wird die wässerige, schweflige Säure verwendet unter Hinzufügung eines Gemisches aus einer anorganischen und einer organischen Säure. In the present process, the aqueous, sulphurous acid is used under Addition of a mixture of an inorganic and an organic acid.
Dabei hat sich ein Gemisch von Salzsäure (bezw. Schwefelsäure oder deren saure Salze) und Essigsäure (bezw. Oxalsäure oder deren saure Salze) am besten bewährt, so z. B. für die Aufschliefsung von Holz die Zugabe von 3 pCt. Salzsäure und 2 pCt. Essigsäure zu einer wässerigen Lösung der schwefligen Säure, die 7,5 pCt. schwefligsaures Gas aufgelöst enthält (für altes Papier 2 pCt. Salzsäure und ι pCt. Essigsäure).A mixture of hydrochloric acid (or sulfuric acid or its acidic salts) and acetic acid (or oxalic acid or its acidic salts) have proven to be best. B. for the opening up of wood the addition of 3 pCt. Hydrochloric acid and 2 pCt. Acetic acid too an aqueous solution of sulphurous acid containing 7.5 pCt. Contains dissolved sulphurous acid gas (for old paper 2 pCt. hydrochloric acid and 1 pCt. acetic acid).
Auch läfst. sich in gleicher Weise leichtes Rohmaterial (Stroh, Hadern, altes Papier etc.) durch längeres Liegen in dem Säuregemisch bei gewöhnlicher Temperatur vollkommen aufschliefsen. ■Also runs. light raw material (straw, rag, old paper, etc.) by lying for a long time in the acid mixture at ordinary temperature, they woke up completely. ■
Handelt es sich dagegen um Auslaugung der die Faser inkrustirenden Substanzen aus widerstandsfähigeren Materialien (Holz, Rohr, Jute u. s. w.), so mufs der Auslaugungsprocefs durch Wärme mit der durch Salz- und Essigsäure activirten wässerigen Lösung des schwefligsauren Gases unterstützt werden und ist bei 50 bis 6o° vorzunehmen.If, on the other hand, it is a matter of leaching the substances encrusting the fiber from more resistant ones Materials (wood, reed, jute, etc.), so must the leaching process by heat with that by hydrochloric and acetic acid activated aqueous solution of the sulphurous acid gas and is at 50 to 60 °.
Nachdem bei dieser Temperatur Wasser jedoch sehr viel weniger schwefligsaures Gas als bei gewöhnlicher auflöst, so mufs man in diesem Falle, um das Gas zurückzuhalten, mit geschlossenen Gefäfsen arbeiten, die dann einen Druck von etwa 3 Atmosphären auszuhalten haben.After water at this temperature, however, much less sulphurous gas than if it dissolves normally, in this case one has to use it in order to hold back the gas closed vessels work, which then withstand a pressure of about 3 atmospheres to have.
Da der verbrauchte Dampf einer Dampfmaschine, welcher vermittelst einer Bleischlange durch den Apparat geleitet wird, ausreicht, um in demselben eine Temperatur von 50 bis 6o° zu'erzeugen, so ist, da eine Dampfmaschine für Zerkleinerung des Rohmaterials vorhanden sein mufs, ohne directe Auslagen für Brennmaterial ein billiger Stoff herzustellen möglich.As the used steam of a steam engine, which is mediated by a lead snake is passed through the apparatus, sufficient to in the same a temperature of 50 to 6o ° to 'produce, there is a steam engine for comminuting the raw material It must be possible to produce cheap material without direct expenses for fuel.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE30072C true DE30072C (en) |
Family
ID=306212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT30072D Expired - Lifetime DE30072C (en) | Treatment of fibrous materials with! Solution of sulphurous acid, which is mixed with hydrochloric and acetic acid to increase its effectiveness |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE30072C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1062101B (en) * | 1956-11-05 | 1959-07-23 | Eugene Gilbert Voiret | Process for the production of wood pulp for paper |
-
0
- DE DENDAT30072D patent/DE30072C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1062101B (en) * | 1956-11-05 | 1959-07-23 | Eugene Gilbert Voiret | Process for the production of wood pulp for paper |
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