EP4482936A1 - Reinigungskonzentrat für turbinen-strahltriebwerke, reinigungslösung und deren verwendung - Google Patents
Reinigungskonzentrat für turbinen-strahltriebwerke, reinigungslösung und deren verwendungInfo
- Publication number
- EP4482936A1 EP4482936A1 EP23707062.8A EP23707062A EP4482936A1 EP 4482936 A1 EP4482936 A1 EP 4482936A1 EP 23707062 A EP23707062 A EP 23707062A EP 4482936 A1 EP4482936 A1 EP 4482936A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- concentrate
- cleaning solution
- cleaning
- jet engine
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/0073—Anticorrosion compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2068—Ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/30—Amines; Substituted amines ; Quaternized amines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
- C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/662—Carbohydrates or derivatives
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/75—Amino oxides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
Definitions
- the present invention relates to a concentrate for producing a cleaning solution for turbine jet engines in aircraft.
- the invention also relates to a cleaning solution for aircraft jet engines, which can be obtained by diluting the concentrate.
- the invention relates to the use of the cleaning solution for cleaning the interior of a jet engine.
- the present invention is therefore based on the object of proposing a cleaning solution and a concentrate for its production, which enables effective cleaning of turbine jet engines, in particular also in the assembled state.
- a concentrate which comprises an aqueous solution with the following ingredients:
- a cleaning solution with the ingredients mentioned which can be obtained by diluting the concentrate according to the invention with water, enables particularly effective cleaning of turbine jet engines, in particular with regard to the effective removal of deposits on the turbine blades.
- the concentrate according to the invention comprises one or more glycol ethers as the main ingredient. It is preferred if the concentrate is in the form of a glycol ether about 9 to about 11% by weight dipropylene glycol monomethyl ether and about 7 to about 9% by weight diethylene glycol monobutyl ether.
- the concentrate according to the invention preferably contains about 7 to about 9% by weight of a C9 to Cn fatty alcohol ethoxylate as the fatty alcohol alkoxylate.
- the concentrate can also contain approx.
- the concentrate according to the invention also contains one or more tertiary alkylamine N-oxides, preferably about 4 to about 5% by weight of tetradecyldimethylamine N-oxide.
- the concentrate according to the invention contains about 0.5 to about 1.0% by weight of one or more alkyl glycosides, preferably about 0.5 to about 1.0% by weight of pentyl-D-xyloside.
- the concentrate according to the invention also contains one or more corrosion inhibitors.
- the concentrate preferably contains a reaction product of maleic anhydride, 2-ethylhexylamine and triethanolamine as a corrosion inhibitor.
- the concentrate comprises an aqueous solution with the following ingredients:
- a corrosion inhibitor in particular a reaction product of maleic anhydride, 2-ethylhexylamine and triethanolamine.
- the concentrate contains less than about 1% by weight of other ingredients, preferably less than about 0.5% by weight, more preferably less than about 0.1% by weight .%.
- the concentrate contains no other components apart from the ingredients mentioned and water.
- the concentrate according to the invention is diluted with water.
- the provision in the form of a concentrate reduces transport and storage costs, since the dilution can be carried out directly on site.
- the subject matter of the present invention is therefore also a cleaning solution for aircraft jet engines, which can be obtained by diluting the concentrate according to the invention with water in a ratio of approximately 5:95 to approximately 30:70.
- a ratio of about 10:90 to about 20:80 is particularly preferred, especially since the concentrate according to the invention shows a very good cleaning performance even in such a 10 to 20% dilution.
- the invention also relates to the use of the cleaning solution according to the invention for cleaning the interior of a turbine jet engine, in particular a turbofan engine or a turbojet.
- the cleaning solution according to the invention is used preferably in a fully assembled state of the jet engine, which can significantly reduce its downtime.
- the cleaning solution is preferably introduced into the jet engine from the inflow side of the compressor and sucked out of the jet engine on the outflow side of the turbine.
- the cleaning solution can also be fed into a circuit, i.e. the cleaning solution sucked off on the outflow side of the turbine is reintroduced into the jet engine from the inflow side of the compressor.
- the cleaning solution is advantageously introduced into the jet engine by means of a spray lance, preferably at a pressure of 5 bar or less. Higher pressures are not necessary for the effectiveness of the cleaning solution according to the invention and should also be avoided in order to avoid any damage.
- a conventional high-pressure cleaner can also be used to introduce the cleaning solution into the jet engine, whereby cleaning that is gentle on the material and at the same time effective is also possible here, depending on the pressure setting and spray distance.
- the cleaning solution When the cleaning solution is sprayed into the jet engine, it is advantageously atomized and flows through the engine components, with the cleaning solution effectively coming into contact in particular with the blades of the turbine in order to remove deposits of salts, soot, etc. there.
- the suction of the cleaning solution on the outflow side of the turbine is advantageously carried out by means of a hood that is placed on the outflow side of the jet engine.
- the cleaning solution is introduced into the jet engine at a temperature of approx. 40 to approx. 60°C. It was found that the cleaning performance is particularly good in this temperature range.
- the cleaning solution is preferably introduced into and aspirated from the jet engine over a period of about 5 to about 10 minutes, preferably in a circuit as described above. Thereafter, the jet engine is advantageously flushed with water for a comparable period of time.
- Table 1 shows the components used with the respective proportions by weight for a specific exemplary embodiment of a concentrate according to the invention.
- Table 1 Composition of a concentrate according to the invention All components were dissolved in the water to produce the concentrate. A clear solution was obtained.
- the concentrate was diluted with water, as indicated in each case, in the ratio of 5:95, 10:90 or 20:80.
- test dirt with a defined composition is applied to a white-painted steel panel and then wiped off with the cleaning solution to be tested using a wipe test machine.
- test dirt used for the present test has the following composition based on DIN ISO 11379-1-B.4: approx. 88% by weight finest quartz approx. 9% by weight kaolin approx. 1% by weight lamp black approx. 2% by weight % paraffin oil
- the cleaning performance of the respective cleaning solution results from the spectroscopically determined degree of whiteness of the uncontaminated sheet (WO), the dirty sheet (Wl) and the cleaned sheet (W2) according to the following formula:
- the cleaning performance of the cleaning solution according to Example 1 according to the invention in a dilution of 5%, 10% and 20% was compared with the cleaning performance of a commercially available cleaning solution for jet engines in the same dilutions.
- the comparison cleaner is the product "ZOK MX Gold Standard” from the manufacturer ZOK International Group Ltd. The results are shown in Table 2 below.
- the cleaning solution according to the invention is clearly superior to the comparison product, in all the dilutions examined.
- the cleaning solution according to the invention shows a better cleaning performance even in a 10% dilution than the comparison product in a 20% dilution, which is used as standard in practice.
- the cleaning performance of the cleaning solution according to Example 1 and the comparison product "ZOK MX Gold Standard" were compared with one another by means of a dip test, each in a dilution of 20:80 and then rinsed with water. The test was carried out at different temperatures of the cleaning solutions (20, 30, 40, 50 and 80 °C).
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022104455.6A DE102022104455A1 (de) | 2022-02-24 | 2022-02-24 | Reinigungskonzentrat für Turbinen-Strahltriebwerke, Reinigungslösung und deren Verwendung |
| PCT/EP2023/054468 WO2023161295A1 (de) | 2022-02-24 | 2023-02-22 | Reinigungskonzentrat für turbinen-strahltriebwerke, reinigungslösung und deren verwendung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4482936A1 true EP4482936A1 (de) | 2025-01-01 |
Family
ID=85380875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23707062.8A Pending EP4482936A1 (de) | 2022-02-24 | 2023-02-22 | Reinigungskonzentrat für turbinen-strahltriebwerke, reinigungslösung und deren verwendung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4482936A1 (de) |
| DE (1) | DE102022104455A1 (de) |
| WO (1) | WO2023161295A1 (de) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2872849B2 (ja) * | 1991-12-20 | 1999-03-24 | 東北電力株式会社 | ガスタービン空気圧縮機用洗浄剤組成物 |
| US7018965B2 (en) * | 2003-09-03 | 2006-03-28 | General Electric Company | Aqueous compositions for cleaning gas turbine compressor blades |
-
2022
- 2022-02-24 DE DE102022104455.6A patent/DE102022104455A1/de active Pending
-
2023
- 2023-02-22 EP EP23707062.8A patent/EP4482936A1/de active Pending
- 2023-02-22 WO PCT/EP2023/054468 patent/WO2023161295A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022104455A1 (de) | 2023-08-24 |
| WO2023161295A1 (de) | 2023-08-31 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20240717 |
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| AK | Designated contracting states |
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| DAX | Request for extension of the european patent (deleted) | ||
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| 17Q | First examination report despatched |
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