Manufacturing olefins from gas oil

Details Manufacturing olefins from gas oil Manufacturing olefins from gas oil

1995-05-15

1997-05-13

Caldarola, Glenn A.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By c content reduction, e.g., cracking, etc.

585650, 208 91, 208 92, C07C 404, C10G 5504

Patent

active

056294654

ABSTRACT:
Disclosed is a method of selecting a gas oil feedstock for use in manufacturing olefins. The feedstock is analyzed for the presence of benzothiophenes and is used to manufacture olefins only if it contains less than 50 ppm (as sulfur) of benzothiophenes. The concentration of benzothiophenes can be reduced by distilling the feedstock and removing the fraction of the feedstock that boils between about 45.degree. and about 60.degree. C. under reduced pressure of about 0.05 to about 0.1 mmHg. The concentration of benzothiophenes can also be reduced by passing the feedstock through a benzothiophene adsorber such as activated alumina or activated carbon.

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