EP1381658A2 - Emulgatormischung für wässerige dieselemulsionen - Google Patents
Emulgatormischung für wässerige dieselemulsionenInfo
- Publication number
- EP1381658A2 EP1381658A2 EP02722245A EP02722245A EP1381658A2 EP 1381658 A2 EP1381658 A2 EP 1381658A2 EP 02722245 A EP02722245 A EP 02722245A EP 02722245 A EP02722245 A EP 02722245A EP 1381658 A2 EP1381658 A2 EP 1381658A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- emulsifier mixture
- weight
- mixture according
- component
- diesel
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUIFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/328—Oil emulsions containing water or any other hydrophilic phase
Definitions
- Emulsifier mixture for aqueous diesel emulsions Emulsifier mixture for aqueous diesel emulsions
- the present application relates to an emulsifier mixture for aqueous diesel emulsions and to the use of certain emulsifier mixtures for the production of aqueous diesel emulsions.
- fuels are understood to mean all energy-supplying supplies whose free combustion energy is converted into mechanical work. This includes all types of engine and aviation fuels that are liquid at room temperature and normal pressure.
- Motor fuels e.g. for car or truck engines usually contain hydrocarbons, e.g. Petrol or higher-boiling petroleum fractions.
- Diesel fuels are flame-retardant mixtures of liquid hydrocarbons, which are used as fuels for constant pressure or burner engines (diesel engines) and mainly from paraffins with admixtures of olefins, naphthenes and the like. aromatic hydrocarbons exist. Their composition is inconsistent and depends in particular on the production method: common products have densities of 0.83-0.88, boiling points in the range of 170-360 ° C, and fixed points at 70-100 ° C. Diesel oil is obtained from the distillation of petroleum from gas oil, from cracking, from the tars obtained from the smoldering (or hydrogenation) of brown or hard coal, and by hydrogenating the coal extract.
- Diesel oils for stationary systems and for marine engines have a similar composition to heavy heating oil, which corresponds to heating oil for cars, buses and trucks.
- air is sucked into the cylinder, heated to 550-900 ° C by strong compression (compression ratio 14: 1 to 25: 1), whereby a jet of injected diesel ignites automatically and at a combustion temperature of 1500 - 2200 ° C reaches a combustion pressure of 50-80 bar, through which the piston moves u. Work is done. 13 m 3 of air is used to burn 1 liter of diesel in a diesel engine; the released Combustion energy is approximately 42,000 kJ / kg.
- An essential factor for the usability of diesel fuels is their ignitability, for whose quantitative indication the cetane number (CZ) was introduced.
- Ignitability refers to the property of an engine fuel to ignite more easily or more difficultly in an engine operating on the diesel principle.
- a preparation period ignition delay
- Good ignitability of a fuel means favorable starting behavior u. smooth running of the diesel engine due to short preparation time or small ignition delay; in the event of a large ignition delay, the well-known "nailing" appears evident.
- the requirements for diesel fuels are for slow-running engines CZ 20-40, for small and fast-running CZ> 45.
- the quality characteristics of diesel fuels also include the cold behavior, which can be preferred today - due to the limit value of the filterability (cold filter plugging point, CFPP), the temperature at which sucked-in diesel fuel blocks a filter can be described, a low pour point, a low content of non-combustible and sooty substances and a low sulfur content DIN-EN 590 (05/1993) specifies the requirements and test methods for diesel fuel throughout Europe. , Defoamer, sometimes also smoke reduction r added as additives. Car exhaust gases from diesel fuels contain more nitrogen oxides and 30 to 100 times more particles (“soot”) than those from petrol fuels after catalytic cleaning. The emissions from diesel engines are classified as carcinogenic according to the MAK list group III A 2.
- aqueous emulsions which contain diesel oils as the oil phase
- Suitable emulsifiers are used to try to produce stable diesel-water emulsions. It was therefore also the object of the present application to produce diesel-water emulsions which are stable for significantly longer than the emulsions known to date from the prior art. It would be particularly preferred if a diesel oil / water emulsion could be kept stable for several days. At the same time, it must also be noted that not all emulsifiers are suitable for the production of such emulsions due to their ecotoxological properties.
- the present application is therefore an emulsifier mixture for aqueous diesel emulsions containing at least
- fatty acid amides b) ethoxylated fatty acids c) alkoxylated fatty alcohols d) ethoxylated castor oil e) Guerbet alcohols and f) solvents.
- the individual substances contained in the emulsifier mixture are well known to the person skilled in the art. It is essential to the invention that the specific combination of the individual components a) to f) can be used to prepare stable aqueous diesel emulsions according to their chemical constitution. The individual components are described below.
- the fatty acid amides are compounds of the general formula R-CO-NR 2 . These compounds are obtained by known reactions between hydroxylalkylamines and carboxylic acid and are described, for example, in the "Handbook of Surfactants", MR Porter, Chatmann and Hall, 1991, pages 135 to 139. The disclosure of the cited reference is also part of the present application. Because of the synthesis of such compounds, it is customary that, in addition to the actual amides, by-products, preferably free hydroxylamine, are also present in the components. Within the framework of the teaching according to the invention, up to 5% by weight, measured according to DGFH / VI 4b, of free amines, based on the amount of component a), can be present.
- Comperlan Compounds in which the radicals R are symmetrical and represent hydroxyalkyl radicals, preferably ethyl radicals, are particularly preferred.
- the use of tall oil derivatives and in particular tall oil fatty acid monoethanolamide is particularly preferred.
- Tall oil itself is a mixture of fatty acids, resin acids, so-called oxy acids (including oxidized resin and fatty acids), including unsaponifiable components. Its composition fluctuates depending on the type of wood being processed. its geographical origin is strong: 15-55% fatty acids, approx. 20-65% resin acids, 1-8% oxy acids and. 6- 30% other unsaponifiable components with an acid number (SZ) of approx. 90-160.
- Tall oil fatty acids consist of at least 97% (1st quality) or 67% (with a resin content of 25-30%) from fatty acids (% by weight based on the total amount of fatty acids in brackets): linoleic acid and conjugated C18 fatty acids (45-65), oleic acid (25-45), 5,9,12-octadecatrienoic acid (5-12) and saturated fatty acids (1-3).
- Tall resin is composed of abietic acid (30-43%), dehydroabietic acid (21-35%), palustric acid (8-12%) and in amounts of approx. 2-7% dihydroabietic acid, neoabietic acid, pimaric and u. Isopimaric acid in addition to 8-18% other resin acids.
- the compounds according to a) are preferably used as emulsifiers, but also because of their foam-suppressing and corrosion-inhibiting properties. They are preferably present in the additives according to the invention in amounts of 15 to 25% by weight and in particular 18 to 23% by weight.
- Component b) is also a known compound which is converted by the reaction of fatty acids, i.e. H.
- Carboxylic acids with 6 to 21 carbon atoms and ethylene oxide in the presence of catalysts can be prepared in a manner known per se.
- Alkoxylated fatty acids have emulsifying properties and are also used in the present technical teaching. The use of purely ethoxylated fatty acids is particularly advantageous. Within the scope of the present teaching according to the invention, those ethoxylated fatty acids are preferred which have 8 to 24 carbon atoms and are in particular unsaturated, 16 to 18 carbon atoms should be contained in the molecule. These are reacted with 1 to 5, preferably 1 to 3 parts of ethylene oxide per part of fatty acid. It is further preferred that component b) is present in amounts of 12 to 18% by weight and preferably 13 to 16% by weight, based on the total amount of the additive.
- Component c) The compounds to c) are known substances which are obtained by reacting fatty alcohols with alkoxides, preferably ethylene oxide and / or propylene oxide.
- Fatty alcohols are to be understood as primary aliphatic alcohols of the formula R-OH, in which R represents an aliphatic, linear or branched hydrocarbon radical having 6 to 24 carbon atoms and 0 and / or 1, 2 or 3 double bonds.
- Typical examples are capronic alcohol, caprylic alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolenyl alcohol, linolenyl alcohol, linolenyl alcohol, linoleyl alcohol Erucyl alcohol and brassidyl alcohol and their technical mixtures, which are obtained, for example, in the high-pressure hydrogenation of technical methyl esters based on fats and oils or aldehydes from Roelen's oxosynthesis and as a monomer fraction in the dimerization of unsaturated fatty alcohols.
- fatty alcohols with 12 to 18 carbon atoms such as coconut, palm, palm kernel or tallow fatty alcohol
- the fatty alcohols are alkoxylated in a known manner, preference being given to those compounds which have been reacted with ethylene oxide and / or propylene oxide. In the case of mixed alkoxylates, the reaction can be carried out either in blocks or randomly.
- the fatty alcohols are preferably reacted with 1 to 15, preferably 1 to 10 and in particular 1 to 5 parts of ethylene oxide and / or propylene oxide.
- the alkoxylated compounds according to c) serve as emulsifiers.
- Component c) is preferably present in the additives according to the invention in amounts of 30 to 50% by weight and in particular in amounts of 35 to 45% by weight.
- alkoxylated compounds which contain 6 to 24 carbon atoms and have been reacted with ethylene oxide and / or propylene oxide are particularly preferred. Again, those compounds are preferred in which 1 to 5 and preferably 1 to 3 parts of ethylene oxide and / or propylene oxide are contained per part of fatty alcohol. It may also be advantageous to choose the mixtures from compounds of component c), some of which are ethoxylated and the other propoxylated.
- Ethoxylated castor oil is also a well-known compound.
- Castor oil is a pale yellow, viscous, flammable, nondigestible oil with a weak odor but unpleasant taste that thickenes in the air due to the double bond, but does not solidify in the thin film.
- Castor oil itself consists of 80 to 85% of the glyceride of ricinoleic acid and besides that Glycerides of altitude (7%,), minol (3%), palmitic (2%) and stearic acid (1%).
- the castor oil can be ethoxylated in all ways known to the person skilled in the art.
- ethoxylated castor oils in which 1 to 50 and preferably 5 to 25 parts of ethylene oxide are used for one part of castor oil.
- Castor oil derivatives with 5 to 20 parts of ethylene oxide per part of castor oil are particularly preferred.
- the agents according to the invention contain the emulsifiers according to d) in amounts of preferably 1 to 5 and preferably 1 to 2% by weight.
- Guerbet alcohols are known compounds that can be obtained via the so-called Guerbet reaction. It is a self-condensation of alcohols under the influence of sodium or copper at 200 ° C and increased pressure. It is believed that under the reaction conditions the alcohol is first dehydrated to the aldehyde, this aldol addition is self-contained and the condensation product is then hydrogenated to the alcohol as shown in the scheme below.
- the alcohols obtained from the Guerbet reaction obey the general structural formula (I) in which R can represent hydrogen or, independently of one another, alkyl radicals having 1 to 18 carbon atoms. They are generally 2-alkylalkanols with at least 6 and a maximum of 36 carbon atoms.
- R can represent hydrogen or, independently of one another, alkyl radicals having 1 to 18 carbon atoms. They are generally 2-alkylalkanols with at least 6 and a maximum of 36 carbon atoms.
- other ways of synthesizing alcohols according to formula (I) are also known. For example, 2-ethyl-1-hexanol is manufactured industrially from butyraldehyde.
- Suitable alcohols as component e) are, for example, 2-methyl-1-pentanol, 2-ethylM-hexanol, 2-propyl-1-heptanol, 2-butyl-1-octanol, -2-pentyl-1-nonanol, 2-hexyl -1-decanol, 2-heptyl-1-undecanoi, 2-octyl-1-dodecanol, 2-nonyl-1-tridecanol, 2-undecyl-1-pentadecanol, 2-dodecyl-1-hexadecanol, 2-tridecyl-1 -heptadecanol, 2-tetradecyl-1-octadecanol, 2-pentadecanol-1-nonadecanol, 2-hexadecyl-1-eicosanol, 2-heptadecyl-1-heineiconasol, 2-oct
- Guerbet alcohols with 14 to 18 carbon atoms are preferably used.
- 2-Octyl-1-dodecanol is particularly preferred.
- Component e) preferably serves as a solubilizer or for adjusting the viscosity of the agents according to the invention.
- Component e) is preferably present in the additives according to the invention in amounts of 2 to 5% by weight and in particular 3 to 5% by weight.
- the emulsifier mixtures according to the invention are given solvents, which may be diesel and / or glycols and their derivatives. Mixtures of water, diesel oil and butyl glycol are particularly preferred. However, other solvents can also be used, in particular reference is made to propylene glycol and diethylene glycol.
- components a) to f) are mixed in succession and are then ready for use.
- Emulsifier mixtures which contain 18 to 22% by weight of fatty acid monoethanolamides, 14 to 18% by weight of ethoxylated fatty acids with 14 to 18 C atoms, 16 to 20% by weight of ethoxylated fatty alcohols with 14 to 18 C atoms, are particularly preferred, 10 to 14% by weight of propoxylated fatty alcohols with 14 to 18 C atoms, 2 to 5% by weight of Guerbet alcohols, 2 to 5% by weight of ethoxylated castor oil and the rest of the solvent.
- the emulsifier mixtures according to the invention are added to the aqueous diesel oils in amounts between 0.5% by weight and 4.0% by weight, preferably between 1.0 and 2.5% by weight and in particular in amounts of 1.0 to 1.0%. 8 wt .-% added. It is therefore also possible to stably emulsify diesel oils containing 20 to 30% by weight of water. Furthermore, the emulsifier mixtures are free of toxicologically unsafe emulsifiers, for example nonylphenol ethoxylates.
- Another object of the present invention relates to the production of aqueous diesel oils, emulsifier mixtures are used as described above. Furthermore, a Diesel oil containing at least 20 wt .-% water and between 0.5 and 5 wt .-%, preferably between 1.0 and 2.5 wt .-% of an emulsifier mixture as described above.
- An additive mixture according to the invention was produced from the following components: a) 21% by weight tall oil fatty acid monoethanolamide b) 17% by weight tall oil fatty acid, ethoxylated with 3 parts ethylene oxide c) 19% by weight oleycetyl alcohol, ethoxylated with 3 parts ethylene oxide, in a mixture with a propoxylated oleyl cetyl alcohol. d) 2% by weight of castor oil, ethoxylated with 3 parts of ethylene oxide e) 2% by weight of C16 Guerbet alcohol f f)) R Reesstt water / diesel oil / butyl glycol
- the above additive package was added in amounts of 1.5% by weight of a 30% by weight water-containing diesel oil emulsion. A white emulsion spontaneously formed, which is still stable even after 48 hours.
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10115705A DE10115705A1 (de) | 2001-03-29 | 2001-03-29 | Emulgatorenmischung für wässrige Dieselemulsionen |
| DE10115705 | 2001-03-29 | ||
| PCT/EP2002/003049 WO2002079354A2 (de) | 2001-03-29 | 2002-03-20 | Emulgatormischung für wässerige dieselemulsionen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1381658A2 true EP1381658A2 (de) | 2004-01-21 |
| EP1381658B1 EP1381658B1 (de) | 2005-06-29 |
Family
ID=7679649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02722245A Expired - Lifetime EP1381658B1 (de) | 2001-03-29 | 2002-03-20 | Emulgatormischung für wässerige dieselemulsionen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040123513A1 (de) |
| EP (1) | EP1381658B1 (de) |
| CA (1) | CA2441554A1 (de) |
| DE (2) | DE10115705A1 (de) |
| WO (1) | WO2002079354A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009019377A1 (de) | 2009-04-29 | 2010-11-11 | Herzog, Hans-Georg, Dr. Ing. | Partikelfreier Dampf-Dieselmotor |
| US20220370965A1 (en) * | 2019-11-05 | 2022-11-24 | Joao Carlos Fernandes Serodio | Method, system, apparatus and formulations for producing oil-based blends and microemulsions and nanoemulsions |
| US12110463B2 (en) | 2020-11-04 | 2024-10-08 | Basf Se | Emulsifier package with a branched and optionally with a propoxylated surfactant for fuel emulsion |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3525124A1 (de) * | 1985-07-13 | 1987-01-15 | Huels Chemische Werke Ag | Kraftstoffe und heizoele und verwendung eines emulgatorsystems zur herstellung dieser kraftstoffe und heizoele |
| US5094667A (en) * | 1990-03-20 | 1992-03-10 | Exxon Research And Engineering Company | Guerbet alkyl ether mono amines |
| US5264006A (en) * | 1990-03-20 | 1993-11-23 | Exxon Research And Engineering Co. | Guerbet alkyl ether mono amines |
| US5743922A (en) * | 1992-07-22 | 1998-04-28 | Nalco Fuel Tech | Enhanced lubricity diesel fuel emulsions for reduction of nitrogen oxides |
| GB9610363D0 (en) * | 1996-05-17 | 1996-07-24 | Ethyl Petroleum Additives Ltd | Fuel additives and compositions |
| DE19647565A1 (de) * | 1996-11-18 | 1998-05-20 | Henkel Kgaa | Mehrphasige Schmiermittelkonzentrate für den Einsatz in wasserbasierten Systemen aus dem Bereich der Erdreicherbohrung |
| DE19647598A1 (de) * | 1996-11-18 | 1998-05-20 | Henkel Kgaa | Verwendung ausgewählter Fettalkohole und ihrer Abmischungen mit Carbonsäureestern als Schmiermittelkomponente in wasserbasierten Bohrspülsystem zum Erdreichaufschluß |
| AU761457B2 (en) * | 1998-01-12 | 2003-06-05 | Deborah Wenzel | An additive composition also used as a fuel composition comprising water soluble alcohols |
| US6017369A (en) * | 1998-11-23 | 2000-01-25 | Pure Energy Corporation | Diesel fuel composition |
| HU222559B1 (hu) * | 1999-05-14 | 2003-08-28 | András Bertha | Adalékkompozíció víztartalmú üzemanyagok stabilizálására, az így stabilizált üzemanyagok és ezek felhasználása |
| US6652607B2 (en) * | 1999-07-07 | 2003-11-25 | The Lubrizol Corporation | Concentrated emulsion for making an aqueous hydrocarbon fuel |
| DE19934689A1 (de) * | 1999-07-23 | 2001-01-25 | Cognis Deutschland Gmbh | Wäßriges Kraftstoffgemisch |
| IT1314228B1 (it) * | 1999-11-16 | 2002-12-06 | Ernesto Marelli | Carburante per motori diesel in forma di microemulsione e procedimentoper preparare lo stesso. |
| US6610751B1 (en) * | 2001-12-10 | 2003-08-26 | O'lenick, Jr. Anthony J. | Bimodal guerbet alkoxylates as emulsifiers |
-
2001
- 2001-03-29 DE DE10115705A patent/DE10115705A1/de not_active Withdrawn
-
2002
- 2002-03-20 CA CA002441554A patent/CA2441554A1/en not_active Abandoned
- 2002-03-20 WO PCT/EP2002/003049 patent/WO2002079354A2/de not_active Ceased
- 2002-03-20 US US10/473,117 patent/US20040123513A1/en not_active Abandoned
- 2002-03-20 EP EP02722245A patent/EP1381658B1/de not_active Expired - Lifetime
- 2002-03-20 DE DE50203508T patent/DE50203508D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02079354A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20040123513A1 (en) | 2004-07-01 |
| DE50203508D1 (de) | 2005-08-04 |
| EP1381658B1 (de) | 2005-06-29 |
| WO2002079354A3 (de) | 2003-11-20 |
| DE10115705A1 (de) | 2002-10-10 |
| WO2002079354A2 (de) | 2002-10-10 |
| CA2441554A1 (en) | 2002-10-10 |
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