CH538875A - Regeneration of spent oil emulsion - by filtration through calcined magnesium aluminium silicate - Google Patents
Regeneration of spent oil emulsion - by filtration through calcined magnesium aluminium silicateInfo
- Publication number
- CH538875A CH538875A CH1146672A CH1146672A CH538875A CH 538875 A CH538875 A CH 538875A CH 1146672 A CH1146672 A CH 1146672A CH 1146672 A CH1146672 A CH 1146672A CH 538875 A CH538875 A CH 538875A
- Authority
- CH
- Switzerland
- Prior art keywords
- oil emulsion
- oil
- calcined magnesium
- emulsion
- filtration
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/04—Working-up used lubricants to recover useful products ; Cleaning aqueous emulsion based
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Solid dirt and unemulsifiable liquid lubricant contamination is removed from spent oil emulsion used e.g. as a lubricant for drawing or drilling, or as a cooling medium by passing the emulsion at least once through a filter contg. calcined Mg, Al silicate, which has highly selective absorptive powers with respect to unemulsified oil. The oil can be removed from the filter by centrifuging and re-used.
Description
Die vorliegende Erfindung betrifft ein Verfahren zum Regenerieren einer gebrauchten Ölemulsion, wie sie z. B. zum Kühlen, Ziehen oder Bohren verwendet wird, sowie ein Mittel zur Durchführung des Verfahrens und eine gemäss dem Verfahren regenerierte Ölemulsion.
Die Entfernung von Feststoffpartikeln (z. B. Spänen, Zunderschuppen oder Abrieb) aus gebrauchten Ölemulsionen, sei es mittels eines mechanischen Filters oder eines Absetztroges, bietet praktisch keine Schwierigkeiten. Dagegen führt die während des Gebrauches einer solchen Emulsion praktisch unvermeidliche Durchsetzung derselben mit flüssigen, nicht emulgierbaren Schmierstoffen (Lecköl) dazu, dass die an und für sich stabile, aber leckölhaltige Emulsion aus technischen Gründen (Sauerwerden der Emulsion mit nachfolgendem chemischen Angriff auf die Werkstücke) und/oder aus gesundheitlichen Gründen vorzeitig ausgeschieden werden muss.
Abgesehen davon, dass diese Notwendigkeit einer Verschwendung gleichkommt, zieht sie aber eine Reihe von Problemen nach sich, von denen lediglich jenes der Gewässerverschmutzung und/oder jenes der Spaltung, Ausflockung, Filtrierung und der darauf folgenden Beseitigung der Komponenten der gebrauchten Emulsion erwähnt seien.
Die Erfindung bezweckt daher die Schaffung eines Verfahrens, mit dem es möglich ist, aus gebrauchten Ölemulsionen nebst Feststoffverschmutzungen auch flüssige Schmierstoffe so weitgehend zu entfernen, dass die Gebrauchstüchtig- keit der einmal angesetzten Ölemulsion erheblich verlängert wird.
Das vorgeschlagene Verfahren ist erfindungsgemäss dadurch gekennzeichnet, dass die gebrauchte Ölemulsion durch wenigstens einen kalziniertes Magnesium-Aluminium-Silikat enthaltenden Filter geführt wird.
Kalziniertes Magnesium-Aluminium-Silikat ist zwar als hochwertiges Absorbens für Flüssigkeiten seit langer Zeit bekannt. Als solches wurde es bisher z. B. als Streue für Kleinhaustiere etwa unter der Bezeichnung Kitty-Dry in den Handel gebracht oder als Beimischung zur Lockerung stark tonhaltiger Böden in der Landwirtschaft verwendet.
Es hat sich nun überraschenderweise gezeigt, dass bei dem vorgeschlagenen Verfahren das genannte kalzinierte Magnesium-Aluminium-Silikat beim Filtern von Lecköl enthaltenden Emulsionen gewissermassen ein selektives Absorptionsvermögen aufweist.
Dank diesem selektiven Absorptionsvermögen wird aus der gebrauchten Emulsion Lecköl entfernt, ohne dass der ursprünglich eingestellte pH-Wert der Emulsion oder deren prozentuales Ansetzverhältnis beim Durchlauf durch das kalzinierte Magnesium-Aluminium-Silikat eine Änderung erführe.
Hinzu kommt eine weitere vorteilhafte Eigenschaft des kalzinierten Magnesium-Aluminium-Silikates. Dieses vermag, wie gefunden wurde, gewichtsmässig Lecköl bis zum 1,2fachen des Eigengewichtes zu binden. Es ist also eine verhältnismässig geringe Menge dieses Filtermaterials erforderlich, um aus einem Betriebskreislauf einer Ölemulsion laufend die anfallende Leckölmenge zu entfernen. Ausserdem ist dieses Lecköl anschliessend durch Zentrifugieren aus dem Filtermaterial wieder entfernbar und gewünschtenfalls durch Raffination wieder für Schmierzwecke aufbereitbar.
The present invention relates to a method for regenerating a used oil emulsion, as it is e.g. B. is used for cooling, drawing or drilling, as well as a means for carrying out the method and an oil emulsion regenerated according to the method.
The removal of solid particles (e.g. chips, scale or abrasion) from used oil emulsions, be it by means of a mechanical filter or a settling trough, presents practically no difficulties. On the other hand, the practically unavoidable penetration of such an emulsion with liquid, non-emulsifiable lubricants (leakage oil) leads to the fact that the emulsion, which is stable in itself, but contains leakage oil, for technical reasons (the emulsion becomes acidic with subsequent chemical attack on the workpieces). and / or has to be eliminated prematurely for health reasons.
Apart from the fact that this necessity is wasteful, it gives rise to a number of problems, of which only that of water pollution and / or that of splitting, flocculation, filtration and the subsequent removal of the components of the used emulsion can be mentioned.
The invention therefore aims to create a method with which it is possible, in addition to solid contamination, to remove liquid lubricants from used oil emulsions to such an extent that the serviceability of the oil emulsion once it has been made is considerably extended.
The proposed method is characterized according to the invention in that the used oil emulsion is passed through at least one filter containing calcined magnesium-aluminum-silicate.
Calcined magnesium-aluminum-silicate has been known for a long time as a high-quality absorbent for liquids. As such, it has been z. B. marketed as litter for small pets under the name Kitty-Dry or used as an admixture for loosening clay-rich soils in agriculture.
It has now surprisingly been shown that in the proposed method the said calcined magnesium-aluminum-silicate has to a certain extent a selective absorption capacity when filtering emulsions containing leakage oil.
Thanks to this selective absorption capacity, leakage oil is removed from the used emulsion without the originally set pH value of the emulsion or its percentage composition changing when it passes through the calcined magnesium-aluminum-silicate.
In addition, there is a further advantageous property of the calcined magnesium-aluminum-silicate. As has been found, this is able to bind leak oil up to 1.2 times its own weight. A relatively small amount of this filter material is therefore required in order to continuously remove the amount of leak oil that occurs from an operating cycle of an oil emulsion. In addition, this leak oil can then be removed again from the filter material by centrifugation and, if desired, reprocessed for lubricating purposes by refining.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1146672A CH538875A (en) | 1972-07-31 | 1972-07-31 | Regeneration of spent oil emulsion - by filtration through calcined magnesium aluminium silicate |
AT55173A AT315995B (en) | 1972-07-31 | 1973-01-23 | Process for regenerating a used cooling, drawing or drilling oil emulsion |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1146672A CH538875A (en) | 1972-07-31 | 1972-07-31 | Regeneration of spent oil emulsion - by filtration through calcined magnesium aluminium silicate |
Publications (1)
Publication Number | Publication Date |
---|---|
CH538875A true CH538875A (en) | 1973-07-15 |
Family
ID=4373763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1146672A CH538875A (en) | 1972-07-31 | 1972-07-31 | Regeneration of spent oil emulsion - by filtration through calcined magnesium aluminium silicate |
Country Status (2)
Country | Link |
---|---|
AT (1) | AT315995B (en) |
CH (1) | CH538875A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020422A1 (en) * | 1991-05-24 | 1992-11-26 | Lueth Stefan | Method of separating mixtures of liquids of different density and different adhesivity on non-absorbant solid surfaces |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3713122C2 (en) * | 1987-04-16 | 1996-05-30 | Ppv Verwaltungs Ag | Device for processing drilling oil emulsion |
-
1972
- 1972-07-31 CH CH1146672A patent/CH538875A/en not_active IP Right Cessation
-
1973
- 1973-01-23 AT AT55173A patent/AT315995B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992020422A1 (en) * | 1991-05-24 | 1992-11-26 | Lueth Stefan | Method of separating mixtures of liquids of different density and different adhesivity on non-absorbant solid surfaces |
Also Published As
Publication number | Publication date |
---|---|
AT315995B (en) | 1974-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |