EP1670889A1 - Solution de nettoyage - Google Patents
Solution de nettoyageInfo
- Publication number
- EP1670889A1 EP1670889A1 EP04787285A EP04787285A EP1670889A1 EP 1670889 A1 EP1670889 A1 EP 1670889A1 EP 04787285 A EP04787285 A EP 04787285A EP 04787285 A EP04787285 A EP 04787285A EP 1670889 A1 EP1670889 A1 EP 1670889A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- oil
- composition
- propellant
- poe
- 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
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/24—Hydrocarbons
- C11D7/241—Hydrocarbons linear
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/24—Hydrocarbons
- C11D7/242—Hydrocarbons branched
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/24—Hydrocarbons
- C11D7/244—Hydrocarbons unsaturated
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/263—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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/28—Organic compounds containing halogen
- C11D7/30—Halogenated hydrocarbons
Definitions
- the present invention relates to a rinsing (cleaning) composition. More particularly, it relates to an internal cleaning composition for heat transfer systems.
- Heat transfer systems include refrigerators, heat pumps and air conditioning systems.
- a refrigerant of suitable boiling point is evaporated at low pressure, taking heat in a first surrounding medium (or zone).
- the vapor thus formed is then compressed by means of a compressor and then passes through a condenser in which it is transformed into the liquid state giving rise to a release of heat in a second surrounding area.
- the liquid thus condensed then circulates in a pressure reducer at the outlet of which it transforms into a two-phase mixture of liquid and vapor, which is finally introduced into the evaporator where the liquid is again evaporated at low pressure, which completes the cycle .
- the mechanical energy required to compress the vapor and circulate the fluid is provided by an electric or internal combustion engine. As in any mechanical device, it is necessary that the moving parts are properly lubricated.
- the lubricants used are an integral part of the heat transfer system and condition both its performance and its lifespan by maintaining adequate lubrication over time.
- the refrigerant which is in each passage in the compressor in contact with the lubricant present on its moving parts tends to take away a certain quantity, which accompanies the refrigerant in its cycle and is therefore found in the evaporator.
- the latter is generally brought to a low temperature, at which the viscosity of the lubricant is particularly high, so that the latter risks accumulating in the evaporator and therefore no longer has the possibility of returning to the compressor, this return being qualified in this text as "oil return".
- the oil return is insufficient, the quantity of lubricant present on the moving parts of the compressor cannot be kept constant over time, which therefore affects the proper functioning of said compressor and its lifetime.
- R-22 or monochlorodifluoromethane is an HCFC (HydroChloroFluoroCarbure) type refrigerant widely used in heat transfer applications including fixed air conditioning, commercial and industrial refrigeration, as well as for heat pumps.
- HCFC HydroChloroFluoroCarbure
- the lubricants used since they are suitable for R-22, in particular as regards the oil return, are either mineral oils or al-benzenzene oils.
- R-22 has a very low ozone-depleting potential (hereinafter ODP)
- ODP ozone-depleting potential
- new products based on HFCs HydroFluoroCarbons
- R-407C was notably developed to replace R-22 in air conditioning applications.
- This product is a mixture combining R-32, R-125, R-134a in the proportions of 23/25/52% by weight.
- R-32 is the common name in the art of difluoromethane
- R-125 is pentafluoroethane
- R-134a denotes 1, 1, 1, 2-tetrafluoroethane.
- R-407C has thermodynamic properties that closely approximate those of R-22. As a result, R-407C can be used in older systems designed to work with R-22, thus allowing the replacement of an HCFC fluid with an HFC fluid safer with respect to the stratospheric ozone layer, as part of a procedure to convert these old systems.
- 5,750,046 describes a composition containing 75% by weight of butyl oleate, 12.5% by weight of ethoxylated polyoxypropylene having a molecular weight of 2000, 10% by weight of a phosphate alcohol ester and ethoxylated in the form of its potassium salt and 2.5% of a surfactant such as nonylphenol ether and polyethylene glycol ether.
- a composition comprising a mixture of tetrafluoroethane, 2,3-dihydroperfluoropentane and a polyol ester has also been described in US Pat. No. 6,403,540.
- the subject of the present invention is an internal cleaning composition for heat transfer systems.
- It also relates to a cleaning composition for eliminating or reducing the rate of impurities (debris from soldering or mixing, solid stains) being in the circuit of heat transfer systems. It relates more particularly to a cleaning composition for eliminating or reducing the level of the old oil in the conversion procedure.
- the rinsing composition according to the present invention comprises one or more non-flammable HFC type propellant (A), one or more compound (B) chosen from propane, butane, isobutane , propylene, trans 1,2-dichloroethylene, ethyl chloride, dimethyl ether or methoxymethane and carbon dioxide and from 5 to 85% by weight, preferably from 20 to 40% by weight of one or more lubricating oil (s), of polyolester type (POE) or polyalkylene glycol type (PAG).
- A non-flammable HFC type propellant
- B propane, butane, isobutane , propylene, trans 1,2-dichloroethylene, ethyl chloride, dimethyl ether or methoxymethane and carbon dioxide
- s lubricating oil
- POE polyolester type
- PAG polyalkylene glycol type
- the rinsing composition preferably comprises from 12 to 94% by weight of propellant (s) A, from 0.15 to 19% by weight of compound (s) B and from 5 to 85% by weight of one or more oils (s) lubrication.
- the advantageously preferred rinsing composition comprises from 54 to 79% by weight of propellant (s) A, from 0.6 to 8% by weight of compound (s) B and from 20 to 40% by weight of one or more oils (s) lubrication.
- the polyolester type oil (POE) is particularly suitable for the rinsing composition.
- the propellant (A) can be chosen from R-134a, R-125 and R-227ea (1, 1, 1, 2,3,3,3 - heptafluoropropane).
- compositions mention may be made in particular of the following compositions: the lubricating oil with R-134a and isobutane, R-134a and carbon, R-134a and trans 1,2-dichloroethylene, R-134a and butane, R-125 and (iso) butane or R-227a and (iso) butane.
- compositions are the following: - 67.9% by weight of R-134a, 2.1% by weight of butane and 30% by weight of POE, - 68.3% by weight of R-134a, 1.7 % by weight of isobutane and 30% by weight of POE, - 66.5% by weight of R-125, 3.5% by weight of butane or isobutane and 30% by weight of POE, - 66.5 % by weight of R-227ea, 3.5% by weight of butane and 30% by weight of POE, - 68.6% by weight of R-227ea, 1.4% by weight of isobutane and 30% by weight of POE.
- One means of implementing the invention consists in connecting a container containing the cleaning composition to all or part of the refrigeration installation.
- the cleaning composition (solution) circulates in the installation, causing dirt (impurities) and old oil.
- the mixture of propellant (s) (A) and compound (s) (B) can be extracted by drawing the installation under vacuum. It can easily reduce the level of residual mineral or alkylbenzene oil in the new POE or PAG oil suitable for HFCs.
- Oil return A load of 10 g of Suniso 3GS mineral oil is introduced into a refrigerated coil (1) placed in a cryostat (2) at 0 ° C. This coil is connected upstream, via a pipe fitted with a stop valve (3) and a pressure sensor (4) to a bottle (5) containing the composition to be tested, equipped with 'a dip tube and placed in a 30 ° C bath. The coil is extended downstream by a pipe fitted with a control valve (6) and a stop valve (7) which arrives in the lower part of a recovery bottle (8) placed in a heating bath. at 60 ° C. A pipe coming from the upper part of the recovery bottle is provided with a gas meter (9).
- the circuit described in FIG. 1 is representative of a refrigeration circuit in the vicinity of the evaporator, and the oil return test consists in measuring the fraction of the oil charge placed in the coil which is carried away by the composition. to test.
- a current of the composition to be tested or of R-134a is circulated for 15 minutes, by initial opening of the stop valve (7) and then of the stop valve (3), at a rate d '' about 1 m 3 / h measured at room temperature and under 1 atmosphere, through the circuit described above and in particular in the coil containing the oil charge.
- the quantity of oil recovered in the bottle (8) is weighed.
- the recovery rate or "oil return" (expressed as a percentage) is equal to the weight of the oil thus recovered divided by the weight of the oil charge initially placed in the coil.
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)
- Lubricants (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Detergent Compositions (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0311024A FR2860000B1 (fr) | 2003-09-19 | 2003-09-19 | Solution de nettoyage |
PCT/FR2004/002230 WO2005028605A1 (fr) | 2003-09-19 | 2004-09-02 | Solution de nettoyage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1670889A1 true EP1670889A1 (fr) | 2006-06-21 |
EP1670889B1 EP1670889B1 (fr) | 2010-08-25 |
Family
ID=34224356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04787285A Expired - Lifetime EP1670889B1 (fr) | 2003-09-19 | 2004-09-02 | Solution de nettoyage |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1670889B1 (fr) |
AT (1) | ATE478936T1 (fr) |
DE (1) | DE602004028847D1 (fr) |
ES (1) | ES2351147T3 (fr) |
FR (1) | FR2860000B1 (fr) |
WO (1) | WO2005028605A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110484210A (zh) * | 2019-08-23 | 2019-11-22 | 江苏蓝色星球环保科技股份有限公司 | 一种新型制冷剂 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3905726A1 (de) * | 1989-02-24 | 1990-08-30 | Hoechst Ag | Druckgaspackung und treibmittel fuer aerosole |
EP0882761B1 (fr) * | 1990-03-12 | 2004-10-20 | E.I. Du Pont De Nemours And Company | Composition azéotrope de 1,1,1,2-tétrafluoroethane et d'éther diméthylique |
WO1993006196A1 (fr) * | 1991-09-26 | 1993-04-01 | E.I. Du Pont De Nemours And Company | Compositions et procede utilises dans la refrigeration |
DE69430662T2 (de) * | 1993-02-05 | 2002-12-05 | E.I. Du Pont De Nemours And Co., Wilmington | Zusammensetzungen von fluorkohlenwasserstoffen und kohlenwasserstoffen |
US5750046A (en) * | 1994-11-14 | 1998-05-12 | Wheeler; William B. | Refrigerant system lubricant and method |
EP0779351B1 (fr) * | 1995-12-14 | 2002-07-10 | AUSIMONT S.p.A. | Mélanges pseudo-azéotropiques de fluorocarbures hydrogénés et d'hydrocarbures destinés à être utilisés comme propulseur pour aérosol |
GB2320024A (en) * | 1996-12-06 | 1998-06-10 | Advanced Phytonics Ltd | Process for the removal of contaminants |
US6403540B1 (en) * | 2000-05-25 | 2002-06-11 | Wynn Oil Company | Chemical composition for cleaning an automotive air conditioning system and method for operating and cleaning |
-
2003
- 2003-09-19 FR FR0311024A patent/FR2860000B1/fr not_active Expired - Fee Related
-
2004
- 2004-09-02 WO PCT/FR2004/002230 patent/WO2005028605A1/fr active Application Filing
- 2004-09-02 EP EP04787285A patent/EP1670889B1/fr not_active Expired - Lifetime
- 2004-09-02 AT AT04787285T patent/ATE478936T1/de not_active IP Right Cessation
- 2004-09-02 ES ES04787285T patent/ES2351147T3/es not_active Expired - Lifetime
- 2004-09-02 DE DE602004028847T patent/DE602004028847D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2005028605A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE478936T1 (de) | 2010-09-15 |
DE602004028847D1 (de) | 2010-10-07 |
FR2860000B1 (fr) | 2007-09-21 |
FR2860000A1 (fr) | 2005-03-25 |
ES2351147T3 (es) | 2011-02-01 |
EP1670889B1 (fr) | 2010-08-25 |
WO2005028605A1 (fr) | 2005-03-31 |
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