Plug flow vented riser

Details Plug flow vented riser Plug flow vented riser

1992-09-28

1994-05-03

Cintins, Marianne M.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208151, 208161, C10G 1100, C10G 928

Patent

active

053084748

ABSTRACT:
An FCC reactor achieves greater utilization of the space within the reactor vessel by using a vented riser arrangement having an inlet opening at the bottom of a vented riser collector. The inlet opening at the bottom of the vented riser collector allows plug flow of the catalyst and hydrocarbon vapors through the upper and lower section of the reactor vessel without any substantial degradation and separation efficiency between the catalyst and the hydrocarbon vapors. This permits almost the entire tangent length of the reactor vessel to be used for the purpose of catalyst and hydrocarbon contact.

REFERENCES:
patent: 4219407 (1980-08-01), Haddad et al.
patent: 4295961 (1981-10-01), Fahrig et al.
patent: 4364905 (1982-12-01), Fahrig et al.
patent: 4495063 (1985-01-01), Walters et al.
patent: 4721603 (1988-01-01), Krug et al.
patent: 4792437 (1988-12-01), Hettinger, Jr.
patent: 5045176 (1991-09-01), Walters et al.

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