AT7277B - Process for converting wood and other cellulose-containing material into sugar (dextrose). - Google Patents
Process for converting wood and other cellulose-containing material into sugar (dextrose).Info
- Publication number
- AT7277B AT7277B AT7277DA AT7277B AT 7277 B AT7277 B AT 7277B AT 7277D A AT7277D A AT 7277DA AT 7277 B AT7277 B AT 7277B
- Authority
- AT
- Austria
- Prior art keywords
- sugar
- cellulose
- containing material
- dextrose
- acid
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- 239000002023 wood Substances 0.000 title description 6
- 229920002678 cellulose Polymers 0.000 title description 3
- 239000001913 cellulose Substances 0.000 title description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 title description 2
- 239000008121 dextrose Substances 0.000 title description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 11
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
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t) R. ALEXANDER CLASSEN IN AACHEN.
Verfahren zur Überführung von Holz und anderem cellulosehaltigen Material in Zucker (Dextrose).
In der Patentschrift Nr. r) 690 ist ein Verfahren zur Überführung von Holz und anderem cellulosehaltigen Material in Zuckor beschrieben, welches darin besteht, dass man das Ilolz entweder mit schwefliger Säure und Schwefelsäure oder mit schwefiger Säure allein behandelt und die Schwefelsäure im Druckgefäss erzeugt und zwar in der Art, dass man bei geeigneter Temperatur die schweflige Säure durch Einführung von Luft. Sauerstoff oder Sauerstoff abgebenden Substanzen zum Theil in Schwefelsäure überführt.
Bei
EMI1.1
wässeriger schwefliger Säure mischt. die infolgedessen nur feucht erscheinende Masse in geschlossenen Gefässen, je nach der Natur des Holzes, auf 120 145 C unter Umdrehen oder Rühren erhitzt, die Temperatur 30 60 Minuten constant erhält, dann die freie schweflige Säure abbläst und sodann mit Wasser, wie bekannt, kocht.
Heim Arbeiten nnter diesen Bedingungen wird die schweflige Säure, je nach ihrem Concentrationsgrade, entweder vollständig oder zum grössten Theile ohne weitere Zufuhr von Sauerstoff oder Sauerstoff abgebonden Substanzen in Schwefelsäure umgewandelt, weiche demnach in einem concentrierteren Zustande zur Einwirkung gelangt. so dass nach dem Auskochen der Masse mit Wasser die Lösung zur weiteren Behandlung. beispielsweiso zur Vergährung, bereit ist.
Diese Abänderung des Verfahrens weist wesentliche technische Vortheile auf. Abge- sehen davon, dass der Druck in den Gefässen weit geringer ist, als bei dem Verfahren gemäss Patent Nr. 5@ @90, kann der Raum des Gefässes weit besser ausgenutzt und auch eine concentriertere Zuckerlösung als bisher erhalten werden. Eine weitere Wirkung besteht darin, dass die erhaltenen Lösungen rascher vergähren als solche, weiche noch wesentliche Mengen schwoniger Säure enthalten.
Statt, wie Vorher angegeben, das zu invertierende Material mit wässriger schwefliger
EMI1.2
weiche noch rase1wr "ergiihrbar ist und welche eine erhöhte Ausbeute an Alkohol bei der Vergährung liefert. Auf 100 kg Holz werden etwa 2-3 kg der Mischung von wässriger schweniger Säure und concentrierter Schwefelsäure benützt.
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t) R. ALEXANDER CLASSEN IN AACHEN.
Process for converting wood and other cellulose-containing material into sugar (dextrose).
Patent No. r) 690 describes a process for converting wood and other cellulose-containing material into sugar, which consists in treating the wood either with sulphurous acid and sulfuric acid or with sulphurous acid alone and generating the sulfuric acid in the pressure vessel in such a way that, at a suitable temperature, the sulphurous acid can be removed by introducing air. Oxygen or oxygen-releasing substances are partly converted into sulfuric acid.
At
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aqueous sulphurous acid mixes. the mass, which appears only moist as a result, is heated in closed vessels, depending on the nature of the wood, to 120 145 C with turning or stirring, the temperature is kept constant for 30 to 60 minutes, then the free sulphurous acid is blown off and then boiled with water, as is known .
When working under these conditions, the sulphurous acid, depending on its degree of concentration, is either completely or largely converted into sulfuric acid without further addition of oxygen or oxygen-bound substances, which accordingly comes into effect in a more concentrated state. so that after boiling the mass with water the solution for further treatment. for example, is ready for payment.
This modification of the procedure has significant technical advantages. Apart from the fact that the pressure in the vessels is much lower than with the method according to patent no. 5 @ @ 90, the space in the vessel can be used far better and a more concentrated sugar solution can be obtained than before. Another effect is that the solutions obtained ferment faster than those which still contain substantial amounts of blackish acid.
Instead of, as previously stated, the material to be inverted with aqueous sulphurous
EMI1.2
which can still be obtained quickly and which gives an increased yield of alcohol during fermentation. About 2-3 kg of the mixture of aqueous weak acid and concentrated sulfuric acid are used for 100 kg of wood.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE118540D | 1899-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT7277B true AT7277B (en) | 1902-04-10 |
Family
ID=5655634
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT5690D AT5690B (en) | 1899-09-23 | 1900-12-03 | |
| AT7276D AT7276B (en) | 1899-09-23 | 1901-02-27 | Process for converting wood and other cellulose-containing material into sugar (dextrose). |
| AT7277D AT7277B (en) | 1899-09-23 | 1901-06-20 | Process for converting wood and other cellulose-containing material into sugar (dextrose). |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT5690D AT5690B (en) | 1899-09-23 | 1900-12-03 | |
| AT7276D AT7276B (en) | 1899-09-23 | 1901-02-27 | Process for converting wood and other cellulose-containing material into sugar (dextrose). |
Country Status (1)
| Country | Link |
|---|---|
| AT (3) | AT5690B (en) |
-
1900
- 1900-12-03 AT AT5690D patent/AT5690B/de active
-
1901
- 1901-02-27 AT AT7276D patent/AT7276B/en active
- 1901-06-20 AT AT7277D patent/AT7277B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| AT7276B (en) | 1902-04-10 |
| AT5690B (en) | 1901-10-25 |
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