DE537336C - Process for the clarification of fibrous slurries - Google Patents
Process for the clarification of fibrous slurriesInfo
- Publication number
- DE537336C DE537336C DES78919D DES0078919D DE537336C DE 537336 C DE537336 C DE 537336C DE S78919 D DES78919 D DE S78919D DE S0078919 D DES0078919 D DE S0078919D DE 537336 C DE537336 C DE 537336C
- Authority
- DE
- Germany
- Prior art keywords
- clarification
- fibrous slurries
- particles
- slurries
- slurry
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 239000002002 slurry Substances 0.000 title claims description 9
- 238000005352 clarification Methods 0.000 title claims description 3
- 239000000126 substance Substances 0.000 claims description 9
- 108090000623 proteins and genes Proteins 0.000 claims description 6
- 102000004169 proteins and genes Human genes 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 230000009182 swimming Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229920000159 gelatin Polymers 0.000 description 5
- 235000019322 gelatine Nutrition 0.000 description 5
- 239000003292 glue Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 3
- 239000008273 gelatin Substances 0.000 description 3
- 235000011852 gelatine desserts Nutrition 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- 239000001828 Gelatine Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Landscapes
- Paper (AREA)
- Physical Water Treatments (AREA)
Description
Verfahren zur Klärung faserstoffhaltiger Aufschlämmungen Gegenstand der Erfindung ist ein Verfahren zur Behandlung von faserstoffhaltigen Aufschlämmungen, welche außer Faserstoff, wie Cellulose, Holzschliff usw., gegebenenfalls auch andere Stoffe, wie z. B. mineralische Füllstoffe, in Aufschlämmung enthalten können, wie es z. B. bei Abwässern in der Papierherstellung der Fall ist.Process for the clarification of fibrous slurries Subject the invention is a process for the treatment of fiber-containing slurries, which apart from fiber, such as cellulose, wood pulp, etc., possibly also others Substances such as B. mineral fillers in slurry, such as it z. B. is the case with wastewater in paper production.
Man hat bereits bei faserstoffhaltigen Abwässern eine Abscheidung und Wiedergewinnung der aufgeschlämmten Teilchen durch Schaumschwimmverfahren, d. h. Heben der Teilchen durch Einführen von Gas in das Abwasser, ausgeführt. Die Erfindung besteht darin, das Aufschwimmen der Teilchen dadurch zu erleichtern und zü befördern, daß der Aufschlämmung Protein oder proteinhaltige Stoffe, wie z. B. Gelatine und Leim, zugesetzt werden.You already have a separation in wastewater containing fiber and recovering the slurried particles by foam flotation methods, d. H. Lifting of the particles by introducing gas into the sewage. The invention consists in facilitating the floating of the particles and promoting them, that the slurry protein or proteinaceous substances, such as. B. gelatin and Glue, can be added.
Es ist gewöhnlich vorteilhaft, die Proteinsubstanzen in Form sehr dünner Lösungen oder Dispersionen zu verwenden. Es ist auch in vielen Fällen vorteilhaft, eine zubereitete Lösung einige Zeit vor dem Gebrauch in kühlem Zustand stehenzulassen.It is usually beneficial to keep the protein substances in great shape to use thinner solutions or dispersions. It is also beneficial in many cases Let a prepared solution stand in a cool state for some time before use.
Die Einführung des Proteins bzw. des proteinhaltigen Materials kann in verschiedenen Behandlungsstufen der Aufschlämmung geschehen, je nach der Art des Schwimmverfahrens, der Aufschlämmung und der sonstigen Arbeitsbedingungen.The introduction of the protein or the protein-containing material can done in different stages of treatment of the slurry, depending on the type the swimming process, slurry, and other working conditions.
Außer Protein können auch verschiedene Elektrolyte zugesetzt werden.In addition to protein, various electrolytes can also be added.
Bei der Reinigung von gebrauchtem Mineralöl u. dgl. ist es bekannt, dem Öl eine Mischung von Gelatine, Gerbstoff und Alkali zuzusetzen. Beim Ansäuern fällt die Gelatine-Gerbstoffverbindung aus und reißt die Verunreinigungen mit. Das Verfahren nach der Erfindung verwendet ebenfalls Gelatine, jedoch ohne Zusatz von Gerbstoff oder Alkali, da bei faserhaltigen Abwässern, wie sie gemäß der Erfindung im Schaumschwimmverfahren gereinigt werden, infolge der Mitwirkung von Luft schon Gelatine allein in geringer Menge genügt, um die Faserstoffe zum Aufschwimmen zu bringen. Beispiel I Die trockene Leimsubstanz wird in Wasser eingeweicht, vorsichtig geschmolzen, mit kaltem Wasser bis auf eine Konzentration von etwa o,5 bis r v. H. verdünnt und in einem Vorratsbehälter etwa zwei Tage in kühlem Zustande (bei etwa 5 bis z5° C) vor dem Gebrauch stehengelassen.When cleaning used mineral oil and the like, it is known to add a mixture of gelatin, tanning agent and alkali to the oil. When acidifying the gelatin-tannin compound precipitates and carries away the impurities. That The method according to the invention also uses gelatin, but without the addition of Tanning agent or alkali, as in the case of fiber-containing wastewaters, such as those according to the invention can be cleaned in the foam swimming process, as a result of the contribution of air Only a small amount of gelatine is sufficient to make the fibers float bring. Example I The dry glue substance is soaked in water, carefully melted, with cold water to a concentration of about 0.5 to r v. H. diluted and in a storage container in a cool state for about two days (at about 5 to z5 ° C) before use.
Zum Gebrauch wird die Lösung mittels einer selbsttätigen Einrichtung stetig aus dem Vorratsbehälter abgelassen, in einem kühlen Wasserstrom verteilt und in das Abwasser vor, während oder nach der Einführung von Luft stetig eingetragen.The solution is used by means of an automatic device steadily from the Reservoir drained into a stream of cool water distributed and steadily in the sewage before, during or after the introduction of air registered.
In an sich bekannter Weise wird das Abwasser unter Rührung und Druck mit Luft behandelt, dann abgelassen, um das Aufschwimmen der Teilchen zu ermöglichen. Die aufschwimmenden Stoffe werden dann.sofort den Papiermaschinen oder dem Papierstoff wieder zugeführt.In a manner known per se, the wastewater is stirred and pressurized treated with air then deflated to allow the particles to float. The floating substances are then immediately sent to the paper machines or the paper stock fed back.
Es hat sich gezeigt, daB bei Mitverwendüng der Gelatine- oder Leimsubstanz alle suspendierten Teilchen, die Fasern sowohl als auch die anderen etwa im Abwasser enthaltenen Stoffe, wie z. B. Kaolin usw., sich außerordentlich rasch zusammenballen und eine leicht abnehmbare Schicht über klarem Wasser ergeben. Beispiel II Zu einer Aufschlämmung von Holzschliff und Kaolin wird etwas Aluminiumsulfat zugesetzt, dann Luft und eine dünne kalte Dispersion von Leimsubstanz eingeführt und die Teilchen zum Aufschwimmen gebracht.It has been shown that when the gelatine or glue substance is also used all suspended particles, the fibers as well as the others in the sewage contained substances, such as B. kaolin, etc., agglomerate extremely quickly and make an easily removable layer over clear water. Example II To a Some aluminum sulfate is then added to slurry of wood pulp and kaolin Air and a thin cold dispersion of glue substance are introduced and the particles made to float.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO537336X | 1924-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE537336C true DE537336C (en) | 1931-11-02 |
Family
ID=19906008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES78919D Expired DE537336C (en) | 1924-07-21 | 1925-07-21 | Process for the clarification of fibrous slurries |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE537336C (en) |
-
1925
- 1925-07-21 DE DES78919D patent/DE537336C/en not_active Expired
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