EP 0618959 B1 19990512 - PROCESS TO RE-REFINE USED OILS
Title (en)
PROCESS TO RE-REFINE USED OILS
Title (de)
Verfahren zur Wiederaufbereitung von Altöl
Title (fr)
PROCEDE DE RERAFFINAGE D'HUILES USEES
Publication
Application
Priority
- EP 9302628 W 19930928
- IT MI922271 A 19920930
Abstract (en)
[origin: WO9407798A1] Process to re-refine used oils, wherein the oils (A1) are initially subjected to a pretreatment (A) with a basic reagent (A2), then to a first preflash treatment (B) to eliminate the water (B1) and the most volatile fractions (B2) contained therein, and finally to a combined treatment (C) of fractional distillation and of purification to eliminate the high polymers and heavy metals, carried out into a single filled-type column (21), in order to obtain one or more fractions of re-refined oils (C3). The separation of the high polymers and heavy metals takes place, together with a cut of very heavy and viscous oils, from the bottom of the column (21) by means of a cyclone device (23). The re-refined oils (C3) are then subjected to a suitable decolorization treatment (D) and can be used as base oils for the production of lubrification oils.
IPC 1-7
IPC 8 full level
C10G 53/12 (2006.01); C10G 67/10 (2006.01); C10M 175/00 (2006.01)
CPC (source: EP)
C10M 175/00 (2013.01); C10M 175/0008 (2013.01); C10M 175/0016 (2013.01); C10M 175/0025 (2013.01); C10M 175/0033 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9407798 A1 19940414; AT E180009 T1 19990515; CN 1040995 C 19981202; CN 1086252 A 19940504; CZ 157994 A3 19941215; CZ 287418 B6 20001115; DE 69324905 D1 19990617; DE 69324905 T2 19991111; DK 0618959 T3 19991129; EG 20181 A 19970930; EP 0618959 A1 19941012; EP 0618959 B1 19990512; ES 2132258 T3 19990816; GR 3030648 T3 19991029; HK 1013280 A1 19990820; HU 213650 B 19970929; HU 9401725 D0 19940928; HU T68935 A 19950828; IT 1255534 B 19951109; IT MI922271 A0 19920930; IT MI922271 A1 19940330; PL 171473 B1 19970530; PL 297417 A1 19940405; RU 2099397 C1 19971220; SA 95150447 A 20051203; SA 95150447 B1 20060208; TJ 335 B 20020701
DOCDB simple family (application)
EP 9302628 W 19930928; AT 93921862 T 19930928; CN 93118174 A 19930929; CZ 157994 A 19930928; DE 69324905 T 19930928; DK 93921862 T 19930928; EG 62393 A 19930926; EP 93921862 A 19930928; ES 93921862 T 19930928; GR 990401734 T 19990630; HK 98114602 A 19981222; HU 9401725 A 19930928; IT MI922271 A 19920930; PL 29741793 A 19930114; RU 94028710 A 19940527; SA 95150447 A 19950117; TJ 96000355 A 19930928