Used oil re-refining

Patent · Mon Apr 22 23:00:00 EST 1985

OSTI ID:5354711

Reid, L E; Ryan, D G; Yao, K C

Used oils, especially used lubricating oils which are normally considered waste and are discarded or burned, are reclaimed for reuse by a re-refining procedure involving the steps of: heat soaking the used oil; distilling the heat soaked oil; passing the distillate through a guard bed of activated material; hydrotreating the guard bed treated distillate under standard hydrotreating conditions. If the used oil to be re-refined contains a quantity of water and/or fuel fraction which the practioner considers sufficiently large to be detrimental, the used oil may be subjected to a dewatering/defueling step prior to being heat soaked.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4512878
• OSTI ID: 5354711
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020800* -- Petroleum-- Waste Management
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISTILLATION
HEAT TREATMENTS
HYDROCRACKING
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PROCESSING
PYROLYSIS
REFINING
REMOVAL
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
WASTE OILS
WATER REMOVAL