EP 1141181 A1 20011010 - METHOD FOR REPROCESSING WASTE OILS
Title (en)
METHOD FOR REPROCESSING WASTE OILS
Title (de)
VERFAHREN ZUR WIEDERAUFARBEITUNG VON ALTÖLEN
Title (fr)
PROCEDE DE RETRAITEMENT D'HUILES USEES
Publication
Application
Priority
- DE 19852007 A 19981111
- EP 9908667 W 19991111
Abstract (en)
[origin: DE19852007A1] The invention relates to a method for reprocessing waste oils and producing high-grade base oils, whereby waste oil is treated by means of distillation, thin-film evaporation in a high vacuum, optional fractionation for separation into layers of different viscosities and subsequent extraction with N-methyl-2-pyrrolidone and/or N-formylmorpholine. The invention also relates to base oils that can be obtained by said method and to the use thereof. The inventive method is characterized in that approximately any waste oil can be used, including waste oils with polychlorinated biphenylene (PCB) or PCB substitutes with contents of up to 250 mg/kg. Furthermore, waste oils containing up to 5 % vegetable oil can be present in the waste oil that is to be reprocessed without impairing the quality of the base oil. The undesirable constituents, especially polycyclic aromatic hydrocarbons and polychlorinated biphenylenes (PCB) or the substitutes thereof are removed in an almost quantitative manner.
IPC 1-7
IPC 8 full level
C10G 7/00 (2006.01); C10G 7/06 (2006.01); C10G 53/04 (2006.01); C10G 19/02 (2006.01); C10G 21/20 (2006.01); C10G 53/12 (2006.01); C10M 101/02 (2006.01); C10M 175/00 (2006.01); C10M 175/02 (2006.01); C10N 40/00 (2006.01); C10N 40/08 (2006.01); C10N 40/12 (2006.01); C10N 40/25 (2006.01)
CPC (source: EP US)
C10M 175/0033 (2013.01 - EP US); C10M 175/005 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
US 6712954 B1 20040330; AT E259405 T1 20040215; AU 1161900 A 20000529; BR 9916606 A 20010814; BR 9916606 B1 20111018; CA 2351606 A1 20000518; CA 2351606 C 20050607; CN 1185327 C 20050119; CN 1326498 A 20011212; CZ 20011559 A3 20011212; CZ 298571 B6 20071107; DE 19852007 A1 20000518; DE 19852007 C2 20020613; DE 59908537 D1 20040318; DK 1141181 T3 20040614; EP 1141181 A1 20011010; EP 1141181 B1 20040211; ES 2222051 T3 20050116; HU 226925 B1 20100301; HU P0104072 A2 20020529; HU P0104072 A3 20040830; JP 2002529579 A 20020910; JP 4246397 B2 20090402; PL 191398 B1 20060531; PL 348757 A1 20020603; PT 1141181 E 20040630; RU 2217484 C2 20031127; SK 285213 B6 20060907; SK 6362001 A3 20011106; UA 69426 C2 20040915; WO 0027957 A1 20000518
DOCDB simple family (application)
US 83110401 A 20010813; AT 99971836 T 19991111; AU 1161900 A 19991111; BR 9916606 A 19991111; CA 2351606 A 19991111; CN 99813173 A 19991111; CZ 20011559 A 19991111; DE 19852007 A 19981111; DE 59908537 T 19991111; DK 99971836 T 19991111; EP 9908667 W 19991111; EP 99971836 A 19991111; ES 99971836 T 19991111; HU P0104072 A 19991111; JP 2000581124 A 19991111; PL 34875799 A 19991111; PT 99971836 T 19991111; RU 2001116108 A 19991111; SK 6362001 A 19991111; UA 2001063912 A 19991111