CH696440A5 - A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo - Google Patents
A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo Download PDFInfo
- Publication number
- CH696440A5 CH696440A5 CH00308/02A CH3082002A CH696440A5 CH 696440 A5 CH696440 A5 CH 696440A5 CH 00308/02 A CH00308/02 A CH 00308/02A CH 3082002 A CH3082002 A CH 3082002A CH 696440 A5 CH696440 A5 CH 696440A5
- Authority
- CH
- Switzerland
- Prior art keywords
- degreasing
- drying
- solvents
- washing
- installation
- Prior art date
Links
- 239000002904 solvent Substances 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 9
- 238000005238 degreasing Methods 0.000 title claims description 6
- 238000001035 drying Methods 0.000 title claims description 5
- 238000009434 installation Methods 0.000 title description 3
- 238000005406 washing Methods 0.000 title description 3
- 150000008282 halocarbons Chemical class 0.000 title 1
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000003599 detergent Substances 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000012465 retentate Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5027—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/024—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/04—Apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
-
- C11D2111/16—
Description
[0001] Une installation monocuve est utilisée pour immerger les pièces à nettoyer dans différents solvants et agents de rinçage. L'ensemble du circuit de solvant hydrocarbure est sous vide d'environ 120 mbar, afin d'assurer la sécurité de l'installation lorsque le solvant est chauffé au-dessus du point-éclair. Le procédé présenté ici représente un développement du brevet No CH 692 084. Ledit brevet n'utilise que du solvant isoparaffine. Le procédé décrit ici utilise premièrement un dégraissage avec un solvant isoparaffine, sous vide, au-dessus du point-éclair et deuxièmement une solution aqueuse comprenant des agents détergents adaptés aux salissures et métaux à nettoyer. La solution aqueuse est réalisée avec de l'eau désionisée et contient moins d'un pourcent d'agents détergents, de manière à réduire les entraînements dans le circuit de rinçage.
Le rinçage est réalisé dans l'enceinte, sous vide.
[0002] Le principal avantage consiste à réaliser un nettoyage de haute qualité, car le solvant isoparaffine élimine les salissures non-polaires (matières grasses en particulier), alors que la solution aqueuse élimine les salissures polaires (matières inorganiques et particules). La solution aqueuse n'est pratiquement pas polluée par les salissures organiques, étant donné que celles-ci ont été dissoutes lors du dégraissage. Les salissures inorganiques ne sont pratiquement pas éliminées par les solvants isoparaffines. Elles sont par contre facilement dissoutes par une solution aqueuse.
La séquence des nettoyages est donc un élément primordial.
[0003] Différentes solutions permettent de nettoyer des substrats métalliques variés, en fonction de leur potentiel électrochimique.
[0004] Le séchage final peut être réalisé en option par une phase vapeur avec du solvant isoparaffine suivie d'un séchage sous vide, ce qui permet de protéger les pièces contre la corrosion. A présent, on va décrire un exemple de réalisation non limitatif de l'invention en regard de la seule figure annexée.
La figure représente schématiquement un procédé de dégraissage et séchage de pièce métalliques ou polymères.
[0005] La figure montre un réservoir 1 de solvant isoparaffine primaire, un réservoir 2 de solvant isoparaffine secondaire, une chambre de travail de l'installation monocuve 3, un distillateur 4 de solvant isoparaffine, un dispositif 5 de production d'eau désionisée en circuit fermé, des réservoirs 6 de solvants lessiviels et un bac de récupération du rétentat de distillation 7. Le solvant dans le réservoir 1 et le distillat dans le réservoir 2 est un mélange de solvants isoparaffines C9 à C11. Le procédé est équipé d'un système de vide, ce qui permet de maintenir une pression inférieure à 120 mbar, d'utiliser le solvant isoparaffine au-dessus du point-éclair et de sécher les pièces sous vide, après un premier ou second lavage.
Il est possible d'ajouter une phase vapeur de solvant isoparaffine et un séchage sous vide après un lavage lessiviel, afin de protéger les pièces contre la corrosion.
[0006] Légende:
1 : Réservoir de prélavage en solvant isoparaffine
2. : Réservoir de lavage en solvant isoparaffine
3. : Chambre de travail
4. : Distillateur
5. : Réservoir de détergent lessiviel
6. : Installation de production d'eau désionisée
7. : Fût de rétentat de distillation
A single-ply installation is used to immerse the parts to be cleaned in different solvents and rinsing agents. The entire hydrocarbon solvent circuit is under vacuum of about 120 mbar, to ensure the safety of the installation when the solvent is heated above the flash point. The process presented here represents a development of the patent No. CH 692 084. This patent uses only isoparaffin solvent. The method described herein first uses a degreasing with an isoparaffin solvent, under vacuum, above the flash point and secondly an aqueous solution comprising detergents suitable for soiling and metals to be cleaned. The aqueous solution is made with deionized water and contains less than one percent detergent, so as to reduce the entrainments in the rinsing circuit.
Rinsing is carried out in the enclosure, under vacuum.
The main advantage is to achieve a high quality cleaning, because the isoparaffin solvent eliminates non-polar dirt (especially fat), while the aqueous solution eliminates polar dirt (inorganic matter and particles). The aqueous solution is practically unpolluted by organic soils, since these have been dissolved during degreasing. Inorganic soils are practically not removed by isoparaffin solvents. On the other hand, they are easily dissolved by an aqueous solution.
The sequence of cleanings is therefore a crucial element.
[0003] Various solutions make it possible to clean various metal substrates, depending on their electrochemical potential.
The final drying can be optionally performed by a vapor phase with isoparaffin solvent followed by vacuum drying, which protects the parts against corrosion. Now, we will describe a non-limiting embodiment of the invention with reference to the single appended figure.
The figure schematically shows a process for degreasing and drying metal or polymer parts.
The figure shows a tank 1 of primary isoparaffin solvent, a tank 2 of secondary isoparaffin solvent, a working chamber of the monocuvette plant 3, a distillator 4 of isoparaffin solvent, a device 5 for producing deionized water in closed circuit, detergent solvent tanks 6 and a retentate distillation tank 7. The solvent in the tank 1 and the distillate in the tank 2 is a mixture of C9 to C11 isoparaffin solvents. The process is equipped with a vacuum system, which makes it possible to maintain a pressure of less than 120 mbar, to use the isoparaffin solvent above the flash point and to dry the parts under vacuum, after a first or second washing. .
It is possible to add an isoparaffin solvent vapor phase and a vacuum drying after a washing detergent, in order to protect the parts against corrosion.
[0006] Legend:
1: Isoparaffin solvent prewash tank
2.: Isoparaffin solvent wash tank
3.: Working room
4.: Distiller
5.: detergent detergent tank
6.: Deionized water production plant
7. Distillation retentate barrel
Claims (3)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00308/02A CH696440A5 (en) | 2002-02-22 | 2002-02-22 | A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo |
| EP02406032A EP1338680B1 (en) | 2002-02-22 | 2002-11-28 | Apparatus for degreasing and drying metallic, ceramic or polymeric articles |
| DE60219591T DE60219591T2 (en) | 2002-02-22 | 2002-11-28 | Apparatus for degreasing and drying metallic, ceramic or polymeric articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00308/02A CH696440A5 (en) | 2002-02-22 | 2002-02-22 | A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH696440A5 true CH696440A5 (en) | 2007-06-15 |
Family
ID=27626699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH00308/02A CH696440A5 (en) | 2002-02-22 | 2002-02-22 | A method of degreasing, washing and drying of mechanical parts using non-halogenated hydrocarbons then detersive solvents in an installation monocuve vacuo |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1338680B1 (en) |
| CH (1) | CH696440A5 (en) |
| DE (1) | DE60219591T2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2260953A4 (en) * | 2008-04-02 | 2012-07-04 | Infinity Entpr Inc | Cleaning system |
| EP2108464A1 (en) | 2008-04-09 | 2009-10-14 | Dow Global Technologies Inc. | Process for cleaning articles |
| WO2022106886A1 (en) | 2020-11-17 | 2022-05-27 | Martin Ineichen | Device and method for cleaning workpieces |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5397397A (en) * | 1992-09-18 | 1995-03-14 | Crestek, Inc. | Method for cleaning and drying of metallic and nonmetallic surfaces |
| US5647143A (en) * | 1992-10-30 | 1997-07-15 | Japan Hayes Ltd. | Vacuum-degreasing cleaning method |
| CH692084A5 (en) * | 1998-03-27 | 2002-01-31 | Egaclean Sa | Device for degreasing and drying mechanical components using ultrasound and non-halogen hydrocarbon solvent comprises airtight enclosure under controlled pressure and temperature |
-
2002
- 2002-02-22 CH CH00308/02A patent/CH696440A5/en not_active IP Right Cessation
- 2002-11-28 EP EP02406032A patent/EP1338680B1/en not_active Expired - Lifetime
- 2002-11-28 DE DE60219591T patent/DE60219591T2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60219591T2 (en) | 2007-12-20 |
| EP1338680A1 (en) | 2003-08-27 |
| DE60219591D1 (en) | 2007-05-31 |
| EP1338680B1 (en) | 2007-04-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUE | Assignment |
Owner name: AMSONIC SA Free format text: JEAN-FRANCOIS FALLOT#TESSENBERGSTRASSE 58#2505 BIEL/BIENNE (CH) -TRANSFER TO- AMSONIC SA#ZUERICHSTRASSE 3#2504 BIEL/BIENNE (CH) |
|
| PL | Patent ceased |