Multiple feed point catalytic cracking process using elutriable catalyst mixture

Patent · Tue May 22 04:00:00 EDT 1990

OSTI ID:6754388

Herbst, J A; Owen, H; Schipper, P H

This patent describes a fluidized catalytic cracking (FCC) process. It comprises: a source of hot, regenerated cracking catalyst having a settling velocity contacts a heavy hydrocarbon feed in a vertical riser reactor adapted to maintain the catalyst and the heavy feed as a dilute phase, the reactor having a cross-sectional area and a base, to produce a mixture of cracked products and spent catalyst, wherein spent catalyst is stripped and charged to a catalyst regeneration zone to produce the hot, regenerated catalyst characterized by use of an elutriable mixture of conventionally sized FCC catalyst and a separate additive catalyst having a higher settling velocity than the conventionally sized FCC catalyst and comprising a shape selective zeolite having a Constraint Index of about 1--12 in a riser having a lower and an upper elutriating section of increased cross-sectional area relative to the riser.

• Assignee: Mobil Oil Corp., New York, NY (USA)
• Patent Number(s): A; US 4927522
• Application Number: PPN: US 7-292206A
• OSTI ID: 6754388
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL TAR OILS
CRACKING
DECOMPOSITION
DILUTION
DISTILLATES
ENERGY SOURCES
FOSSIL FUELS
FUELS
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PYROLYSIS
THERMOCHEMICAL PROCESSES