Recracking of cat naphtha for maximizing light olefins yields

Details Recracking of cat naphtha for maximizing light olefins yields Recracking of cat naphtha for maximizing light olefins yields

1996-12-17

1998-12-08

Griffin, Walter D.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 75, 208 80, C01G 1100

Patent

active

058464034

ABSTRACT:
A process for increasing the yield of C.sub.3 and C.sub.4 olefins by injecting light cat naphtha together with steam into an upstream reaction zone of a FCC riser reactor. The products of the upstream reaction zone are conducted to a downstream reaction zone and combined with fresh feed in the downstream reaction zone.

REFERENCES:
patent: 3617497 (1971-11-01), Bryson et al.
patent: 3692667 (1972-09-01), McKinney et al.
patent: 3928172 (1975-12-01), Davis et al.
patent: 4051013 (1977-09-01), Strother
patent: 4892643 (1990-01-01), Herbst et al.
patent: 5043522 (1991-08-01), Leyshon et al.
patent: 5318689 (1994-06-01), Hsing et al.

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