High octane gasoline components from catalytic cracking gasoline

Details High octane gasoline components from catalytic cracking gasoline High octane gasoline components from catalytic cracking gasoline

1979-05-15

1980-07-08

Crasanakis, George

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

With hydrocarbon recycle from later to earlier synthesis

585331, 585644, 585717, C07C 362, C07C 350

Patent

active

042118859

ABSTRACT:
High octane gasoline is produced from cat cracked gasoline by cleaving the C.sub.5 olefins in the gasoline with ethylene in a first disproportionation zone. The effluent is separated to produce a C.sub.5.sup.+ stream, a first butenes stream and an ethylene-propylene stream. The ethylene-propylene stream is passed to a second disproportionation or cleavage zone along with additional propylene supplied from an external source. The effluent is separated to produce ethylene which is passed to the first disproportionation zone and a second stream of butenes. The butenes stream are combined and passed to an alkylation zone where it is alkylated with isobutane. The alkylate and remaining gasoline (C.sub.5.sup.+ stream) can be combined to produce a product higher in octane value than cat cracked gasoline.

REFERENCES:
patent: 3763032 (1973-10-01), Banks
patent: 3767565 (1973-10-01), Banks
patent: 3785956 (1974-01-01), Banks
patent: 3785957 (1974-01-01), Banks

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