AT23046B - Process for the production of a glue-like substance by evaporation of sulphite cellulose waste liquors. - Google Patents
Process for the production of a glue-like substance by evaporation of sulphite cellulose waste liquors.Info
- Publication number
- AT23046B AT23046B AT23046DA AT23046B AT 23046 B AT23046 B AT 23046B AT 23046D A AT23046D A AT 23046DA AT 23046 B AT23046 B AT 23046B
- Authority
- AT
- Austria
- Prior art keywords
- evaporation
- glue
- substance
- production
- waste liquors
- Prior art date
Links
- 238000001704 evaporation Methods 0.000 title claims description 9
- 230000008020 evaporation Effects 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 6
- 239000000126 substance Substances 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 title claims description 4
- 239000002699 waste material Substances 0.000 title claims description 4
- 229920002678 cellulose Polymers 0.000 title claims 2
- 239000001913 cellulose Substances 0.000 title claims 2
- 150000001299 aldehydes Chemical class 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000006188 syrup Substances 0.000 description 2
- 235000020357 syrup Nutrition 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000012261 resinous substance Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compounds Of Unknown Constitution (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung eines leimartigen Stoffes durch Eindampfen von Sulfltoelluloseablaugen.
EMI1.1
leimartigen Stoffes aus den Ablaugen der Sulfitcollulosefabrikation. Bekanntlich entsteht heim Eindampfen der Sulfitcolluloselauge bis zur Sirupdicke ein Produkt, welches vergleichsweise leidmartige eigenschaften hat. Dieses Abdampfen der Colluloselauge ist indessen technisch eine sehr unangenehme Operation, indem einerseits sich wahrend des Eindampfens Salze ausscheiden, welche, wenn man hei freiem Feuer oder im Vakuum eindampft, zum Stossen und damit auch zu Verlusten und Reparaturen Veranlassung geben, und indem andererseits sich sehr bald eine Haut auf der Oberfläche der Flüssigkeit bildet, welche das weitere Verdampfen ausserordentlich erschwert.
Man hat daher bis jetzt zu verschiedenen
EMI1.2
Schwefelsäure, harzartigen Stoffen oder dgl. gemacht oder man hat eigene Verdampfapparate für diese Laugen konstruieren müssen. Den Gegenstand der vorliegenden Erfindung bildet nun ein Verfahren, welches diese Übelstände vollkommen vermeidet und es gestattet, die Lauge bei freiem Feuer ohne jede Schwierigkeit einzudampfen und ein Endprodukt zu erhalten, das einen durchsichtigen, hellen, leimartigen Sirup von erheblicher Klebekraft darstellt, der sich in Wasser glatt auflöst und sich durch Behandeln von Alkalien vollständig entfärben fasst. Das Verfahren besteht darin, dass die Laugen vor oder während des Eindampfens den Zusatz eines Aldehydes, z. B.
Formaldehyd, Paraformaldehyd, Acetal- dehyd erhaiten. Es genügt beispielsweise vom Formaldehyd ein Zusatz von 3- 50/0 einer 40igen Formaldehydlösung. Worauf die Wirkung dieses Zusatzes zurückzuführen ist, ist nicht ganz ! durchsichtig, einige Wahrscheinlichkeit liegt vor, dass der Aldehyd sich sowohl mit den schwefligsauren Salzen, als auch mit den in der Lösung enthaltenen Lignin- substanzen zu nicht oder schwer kristallisierbaren Körpern verbindet, welche beim Ein- dampfen sich nicht ausscheiden. Das erhaltene Produkt kann nach bekannten Methoden weiteren Reil1igungsprozessen unterzogen werden, es kann durch Alkalien entfärbt worden,
EMI1.3
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of a glue-like substance by evaporating sulphoellulose waste liquors.
EMI1.1
glue-like substance from the waste liquors of the sulphite collulose production. It is well known that evaporation of the sulphite collulose lye to the syrup thickness results in a product which has comparatively painful properties. This evaporation of the collulose eye is, however, technically a very unpleasant operation, in that on the one hand salts precipitate during the evaporation, which, if evaporated over a fire or in a vacuum, give rise to pumping and thus also to losses and repairs, and on the other hand very much soon a skin forms on the surface of the liquid, which makes further evaporation extremely difficult.
So up to now one has to different
EMI1.2
Sulfuric acid, resinous substances or the like. Or you have to construct your own evaporator for these alkalis. The subject of the present invention now forms a method which completely avoids these inconveniences and allows the lye to be evaporated in an open fire without any difficulty and an end product to be obtained which is a transparent, light, glue-like syrup of considerable adhesive power, which is in Water dissolves smoothly and completely discolored by treating alkalis. The method consists in that the alkalis before or during the evaporation, the addition of an aldehyde, z. B.
Formaldehyde, paraformaldehyde, acetaldehyde. For example, an addition of 3-50/0 of a 40% formaldehyde solution is sufficient for formaldehyde. What the effect of this additive is due to is not quite! transparent, there is some likelihood that the aldehyde will combine with the sulphurous acid salts as well as with the lignin substances contained in the solution to form bodies which are difficult or impossible to crystallize and which do not separate when evaporated. The product obtained can be subjected to further purification processes using known methods; it can be decolorized by alkalis,
EMI1.3
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT23046T | 1905-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT23046B true AT23046B (en) | 1906-02-10 |
Family
ID=3531866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT23046D AT23046B (en) | 1905-05-08 | 1905-05-08 | Process for the production of a glue-like substance by evaporation of sulphite cellulose waste liquors. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT23046B (en) |
-
1905
- 1905-05-08 AT AT23046D patent/AT23046B/en active
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