Conversion of hydrocarbon oils. [Thermal and catalytic cracking]

Patent · Tue Aug 24 04:00:00 EDT 1943

OSTI ID:7081050

Thomas, C L

A process for the conversion of asphaltic hydrocarbons into yields of relatively high antiknock gasoline includes charging the oil to a primary fractionation step, separating a heavy non-vaporous fraction of the oil, subjecting the fraction to noncatalytic cracking in a primary cracking step by passage through a heating oil and communicating reaction chamber at a temperature and pressure adequate to effect substantial cracking thereof. The reaction products are then passed into a vaporizing zone at a reduced pressure, and a heavy fraction unsuitable for further conversion is separated while the vaporous portion of the reaction products is passed to the primary fractionation step. The gas and gasoline are removed, and an intermediate-boiling fraction, comprising components of the charging oil not previously subjected to cracking conditions in the process, is separated and contacted with a catalyst in a secondary cracking step under conditions adequate to effect substantial cracking thereof. The gas and gasoline are then separated from the products of the secondary cracking step in a secondary fractionation step. An intermediate-boiling fraction of insufficiently converted oil separated from the last named products is returned to the secondary cracking step.

• Assignee: Universal Oil Products Co.
• Patent Number(s): US 2327973
• OSTI ID: 7081050
• 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
090121 -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
ASPHALTS
BITUMENS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
GASOLINE
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM PRODUCTS
PRODUCTION
PYROLYSIS
SYNTHETIC FUELS
TAR
THERMAL CRACKING