Global Patent Index - EP 0990019 A1

EP 0990019 A1 2000-04-05 - METHOD FOR REPROCESSING USED OIL

Title (en)

METHOD FOR REPROCESSING USED OIL

Title (de)

VERFAHREN ZUR ALTÖLAUFARBEITUNG

Title (fr)

PROCEDE DE RETRAITEMENT D'HUILE USAGEE

Publication

EP 0990019 A1 (DE)

Application

EP 98937405 A

Priority

  • DE 9801717 W
  • DE 19725640 A

Abstract (en)

[origin: DE19725640C1] The invention relates to a method for reprocessing used oil by separating off recyclable base oils, gas oils and heavy oils, separating the proportions of water and salt. The inventive method is characterised in that a proportion of fluid from the group of hydrocarbons and a proportion of gaseous hydrogen are added to the used oil being processed, said fluid having been converted into the supercritical aggregate state through the action of pressure and temperature. The three-part mixture of the constituents of the used oil, the fluid and the hydrogen then proceeds to the processing stage which uses at least one catalyst and one separator. The fluid and hydrogen gas mixture which is discharged from the separator passes through a closed circuit during the process.

IPC 1-7 (main, further and additional classification)

C10M 175/00; C10G 45/02

IPC 8 full level (invention and additional information)

C10G 45/02 (2006.01); C10M 175/00 (2006.01)

CPC (invention and additional information)

C10M 175/00 (2013.01)

Citation (search report)

See references of WO 9858043A1

Designated contracting state (EPC)

DE ES FR GB IT

DOCDB simple family

DE 19725640 C1 19980806; EP 0990019 A1 20000405; EP 0990019 B1 20011017; ES 2166178 T3 20020401; JP 2002504176 A 20020205; WO 9858043 A1 19981223