EP 0541892 A3 19930616 - PROCESS OF DE-OILING AND CLEANING MATERIAL COVERED WITH GREASY AND/OR OILY SUBSTANCES
Title (en)
PROCESS OF DE-OILING AND CLEANING MATERIAL COVERED WITH GREASY AND/OR OILY SUBSTANCES
Publication
Application
Priority
DE 4136990 A 19911111
Abstract (en)
[origin: EP0541892A2] The invention is characterised in that the material to be cleaned is heated under vacuum conditions in a process chamber in such a way that the greases and/or oils, depending on their physical state can be separated off from the material. Alternatively, a further variation of the cleaning process is specified, in which the material to be cleaned is placed in a vacuum chamber. In a first cleaning step, the greases and/or oils adhering to the material to be cleaned are impinged with a solvent similar to their consistency and the mixture forming of solvent and detached greases or oils is fed to an evaporator. In a second cleaning step, the steam forming at the evaporator is fed to the material, on the surface of which the steam condenses and, forming a condensate, disposes of the residual contamination. In a third cleaning step, the steam is fed to a condenser, the condensate obtained from which is in turn fed to the cleaning process as a solvent and in a fourth cleaning step, the vacuum chamber is further evacuated in such a way that residual solvent vapours are completely removed. <IMAGE>
IPC 1-7
IPC 8 full level
B08B 7/00 (2006.01); C23G 5/00 (2006.01); C23G 5/02 (2006.01); C23G 5/024 (2006.01); C23G 5/04 (2006.01)
CPC (source: EP)
B08B 7/0071 (2013.01); C23G 5/00 (2013.01); C23G 5/02 (2013.01); C23G 5/024 (2013.01)
Citation (search report)
- FR 2419131 A1 19791005 - TOYO RADIATOR CO LTD [JP]
- GB 516218 A 19391228 - BENNETT HYDE LTD
- EP 0313154 A1 19890426 - BEKAERT SA NV [BE]
- GB 2100746 A 19830106 - ASHDOWN IND SERVICES LIMITED [GB]
- EP 0416758 A1 19910313 - FORD MOTOR CO [GB], et al
- US 4931104 A 19900605 - BURKE JOHN M [US]
- MITTEN W.: "VACUUM DEOILING FOR ENVIRONMENTALLY SAFE PARTS CLEANING.", METAL FINISHING., ELSEVIER, NEW YORK, NY., US, vol. 89., no. 09., 1 September 1991 (1991-09-01), US, pages 29 - 31., XP000233787, ISSN: 0026-0576
- [X] MITTEN W.: "VACUUM DEOILING FOR ENVIRONMENTALLY SAFE PARTS CLEANING.", METAL FINISHING., ELSEVIER, NEW YORK, NY., US, vol. 89., no. 09., 1 September 1991 (1991-09-01), US, pages 29 - 31., XP000233787, ISSN: 0026-0576
- [X] Week 9130, Derwent Publications Ltd., London, GB; AN 91-219066 & JP-A-3 140 485 (ORIENTAL ENG KK) 14. Juni 1991
Designated contracting state (EPC)
BE CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0541892 A2 19930519; EP 0541892 A3 19930616; DE 4136990 A1 19930513; DE 4136990 C2 20021205; DE 59208210 D1 19970417; EP 0639658 A2 19950222; EP 0639658 A3 19950419; EP 0639658 B1 19970312
DOCDB simple family (application)
EP 92107605 A 19920506; DE 4136990 A 19911111; DE 59208210 T 19920506; EP 94117579 A 19920506