DE4135578A1 - Splitting spent emulsions - Google Patents
Splitting spent emulsionsInfo
- Publication number
- DE4135578A1 DE4135578A1 DE4135578A DE4135578A DE4135578A1 DE 4135578 A1 DE4135578 A1 DE 4135578A1 DE 4135578 A DE4135578 A DE 4135578A DE 4135578 A DE4135578 A DE 4135578A DE 4135578 A1 DE4135578 A1 DE 4135578A1
- Authority
- DE
- Germany
- Prior art keywords
- splitting
- carbon dioxide
- emulsion
- emulsions
- water
- 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.)
- Ceased
Links
- 239000000839 emulsion Substances 0.000 title abstract description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 7
- 239000003945 anionic surfactant Substances 0.000 claims abstract description 4
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- 239000003925 fat Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 159000000007 calcium salts Chemical class 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000003995 emulsifying agent Substances 0.000 abstract description 2
- 239000002736 nonionic surfactant Substances 0.000 abstract description 2
- 239000012874 anionic emulsifier Substances 0.000 abstract 1
- 125000000129 anionic group Chemical group 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000005068 cooling lubricant Substances 0.000 abstract 1
- 238000009738 saturating Methods 0.000 abstract 1
- 239000003599 detergent Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- 238000003776 cleavage reaction Methods 0.000 description 3
- 230000007017 scission Effects 0.000 description 3
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- 150000003871 sulfonates Chemical class 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- YDURNEXHAZKVLN-UHFFFAOYSA-L calcium;carbon dioxide;carbonate Chemical compound [Ca+2].O=C=O.[O-]C([O-])=O YDURNEXHAZKVLN-UHFFFAOYSA-L 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D17/04—Breaking emulsions
- B01D17/042—Breaking emulsions by changing the temperature
-
- 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
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Es wird ein Verfahren zum Waschen öliger oder fettiger Teile beschrieben, wobei die Teile zunächst mit einem Reinigungsmittel auf wäßriger Basis gewaschen werden. Das Reinigungsmittel ist erfindungsgemäß von vorneherein derart konzipiert, daß die bei der Reinigung entstehende Emulsion aus Reinigungsmittel, Öl oder Fett und Wasser mit Kohlendioxid leicht gespalten werden kann. Dabei wird unter leichter Spaltbarkeit verstanden, daß die mit Kohlendioxid unter Druck gesättigte Emulsion bis zur Phasentrennung nur wenig oder überhaupt nicht erhitzt werden muß. Die aufsteigende organische Phase wird abgestimmt oder über einen Ölabscheider abgetrennt. Die Wasserphase wird mit frischem Reinigungsmittel nachgeschärft und wiederverwendet. Als Reinigungsmittel werden anionische Tenside, wie Carboxylate, Sulfate oder Sulfonate oder Metallhydroxide, bzw. Kombinationen hieraus eingesetzt.It becomes a process for washing oily or greasy parts described, the parts first with a detergent be washed on an aqueous basis. The detergent is invented from the outset in such a way that the at The resulting emulsion of detergent, oil or fat and water can easily be split with carbon dioxide. Here is understood by easy cleavage that the with Carbon dioxide under pressure saturated emulsion up to Phase separation needs little or no heating. The ascending organic phase is coordinated or via a Oil separator separated. The water phase becomes fresh Cleaning agents sharpened and reused. As Cleaning agents are anionic surfactants, such as carboxylates, Sulfates or sulfonates or metal hydroxides, or combinations used from here.
Bei der heute gebräuchlichen Teilewaschanlagen werden die entstehenden ölhaltigen Waschlaugen entweder als Sondermüll entsorgt oder nach den bekannten Methoden der Emulsionsspaltung aufgearbeitet. Die diesbezüglich entstehenden Nachteile sind in der Patentanmeldung P 40 28 904.4 beschrieben. Weiterhin ist in der erwähnten Anmeldung das Verfahren beschrieben, solche Emulsionen mittels Kohlendioxid und Wärme zu spalten. Verbesserungswürdig bei diesem Verfahren ist das für manche Emulsionen notwendige starke Erhitzen auf manchmal über 100°C. Darüberhinaus wäre es grundsätzlich vorteilhaft, die Spaltung bei möglichst niedriger Temperatur durchzuführen.With the parts washing systems in use today, the resulting oil-containing wash liquors either as hazardous waste disposed of or according to the known methods of emulsion splitting worked up. The disadvantages arising in this regard are in the patent application P 40 28 904.4 described. Furthermore, in the mentioned application described the method, such Splitting emulsions using carbon dioxide and heat. For some, this method needs improvement Emulsions require vigorous heating to sometimes over 100 ° C. In addition, it would be fundamentally advantageous to include the split temperature as low as possible.
Zum Erreichen dieses Zieles wird erfindungsgemäß vorgeschlagen, die zu spaltende Emulsion, auf leichte Spaltbarkeit hin optimiert, dadurch herzustellen, daß der als Emulgator wirkende Reiniger so ausgewählt wird, daß die mit dem Öl oder Fett entstehende Emulsion möglichst geringe Stabilität gegenüber einer Spaltung mit Kohlendioxid und Wärme besitzt. Durch Wärme allein sollte diese Emulsion dabei nicht spaltbar sein, da die Waschprozesse selbst günstigerweise bei erhöhter Temperatur betrieben werden. Als Reinigungsmittel werden anionische Tenside, wie Carboxylate, Sulfonate, Sulfate, Metallhydroxide oder Kombinationen hieraus eingesetzt. Nichtionische oder kationische Tenside sind in der Regel wenig geeignet.To achieve this goal, the invention proposes the emulsion to be split, optimized for easy cleavage, in that the cleaner acting as an emulsifier is selected that the resulting emulsion with the oil or fat as little stability as possible with a cleavage Possesses carbon dioxide and heat. This should be done by heat alone Emulsion cannot be cleaved because the washing processes themselves conveniently operated at elevated temperature. As Cleaning agents are anionic surfactants, such as carboxylates, Sulfonates, sulfates, metal hydroxides or combinations thereof used. Nonionic or cationic surfactants are in the Usually not very suitable.
Die bei der Spaltung anfallende Spaltwasserphase kann erfindungsgemäß mit Reinigungsmittel nachgeschärft werden und als Reinigungsmittel wiederverwendet werden. Einer Aufsalzung dieser im Kreislauf geführten Wasserphase kann dadurch begegnet werden, daß in dem als Ionenpaar vorliegenden Reinigungsmittel das Kation so gewählt wird, daß bei der Behandlung mit Kohlendioxid ein schwerlösliches Carbonat gebildet wird (z. B. Calcium bildet mit Kohlendioxid Calciumcarbonat). Dieses aus der im Kreislauf geführten Spaltwasserphase ausfallende Carbonat kann zusammen mit der aufschwimmenden Ölphase oder durch Abfiltrieren kontinuierlich entfernt werden.The split water phase resulting from the split can according to the invention with cleaning agents and as Detergents can be reused. Salting this up circulating water phase can be countered by that in the detergent present as ion pair the cation is chosen so that a treatment with carbon dioxide poorly soluble carbonate is formed (e.g. calcium also forms Carbon dioxide calcium carbonate). This from the cycle precipitated carbonate precipitating carbonate together with the floating oil phase or by filtering continuously be removed.
Claims (1)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4135578A DE4135578A1 (en) | 1990-09-12 | 1991-10-29 | Splitting spent emulsions |
| AU11606/92A AU1160692A (en) | 1991-01-15 | 1992-01-14 | Process for cleaving emulsions or the like |
| CA002100677A CA2100677A1 (en) | 1991-01-15 | 1992-01-14 | Process for cleaving emulsions or the like |
| PCT/EP1992/000056 WO1992013051A1 (en) | 1991-01-15 | 1992-01-14 | Process for cleaving emulsions or the like |
| EP92902310A EP0569385A1 (en) | 1991-01-15 | 1992-01-14 | Process for cleaving emulsions or the like |
| US08/087,740 US5435920A (en) | 1991-01-15 | 1992-01-14 | Method of separating emulsions |
| JP4502468A JPH06504306A (en) | 1991-01-15 | 1992-01-14 | How to separate emulsions etc. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4028904A DE4028904C1 (en) | 1990-09-12 | 1990-09-12 | Dissociating used coolant or lubricant - comprises saturating with carbon di:oxide under pressure to separate organic and aq. phase |
| DE4135578A DE4135578A1 (en) | 1990-09-12 | 1991-10-29 | Splitting spent emulsions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4135578A1 true DE4135578A1 (en) | 1993-05-06 |
Family
ID=25896800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4135578A Ceased DE4135578A1 (en) | 1990-09-12 | 1991-10-29 | Splitting spent emulsions |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4135578A1 (en) |
-
1991
- 1991-10-29 DE DE4135578A patent/DE4135578A1/en not_active Ceased
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AF | Is addition to no. |
Ref country code: DE Ref document number: 4028904 Format of ref document f/p: P |
|
| 8131 | Rejection |