Process for decolorizing oil. [treatment with sulfuric acid]

Patent · Tue Feb 12 04:00:00 EST 1935

OSTI ID:5423229

Campbell, S E

A process for decolorizing oils includes continuously passing a stream of cracked hydrocarbon distillate upwardly in succession through a plurality of zones containing pools of dilute sulfuric acid of a strength sufficient to remove the basic impurities in the distillate but insufficient to remove unsaturated hydrocarbons and until the dilute acid is substantially exhausted successively in each zone. The stream is passed out of the last zone through a mass of contact material to provide that substantially no free acid solution is carried from the zone with the stream. Then the stream is passed through an alkaline solution whereby the acidic impurities in the distillate are removed, and then the stream is subjected to an extended passage through zones containing pools of concentrated sulfuric acid at a low temperature whereby the concentrated acid is substantially exhausted in each zone in succession. Finally the stream is passed through an alkaline solution, and the exhausted concentrated acid is recovered from each of the zones in succession.

• Assignee: TIC; EDB-78-025277
• Patent Number(s): US 1991049
• OSTI ID: 5423229
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
04 OIL SHALES AND TAR SANDS
040403 -- Oil Shales & Tar Sands-- Refining
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PURIFICATION
SULFURIC ACID