Method and apparatus for contacting fluid feed materials with fl

Details Method and apparatus for contacting fluid feed materials with fl Method and apparatus for contacting fluid feed materials with fl

1986-05-30

1988-10-18

Kratz, Peter

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

Control element responds proportionally to a variable signal...

422140, 422214, B01J 818

Patent

active

047786582

ABSTRACT:
Apparatus for feeding a mixture of fluidized solids, such as cracking catalyst, and a fluidized feed material to be contacted therewith, such as a hydrocarbon feedstock to be cracked, into a contacting zone, with associated pressure sensor means and flow controller means operatively connected thereto for automatically reducing a purge fluid flow from 100% to 0% while simultaneously increasing a fluidized feed material flow from 0% to 100%.

REFERENCES:
patent: 2456310 (1948-12-01), Orr
patent: 2701231 (1955-02-01), Starr
patent: 2965454 (1960-12-01), Harper
patent: 3152065 (1964-10-01), Sharp et al.
patent: 3661799 (1972-05-01), Cartwell
patent: 4345993 (1982-08-01), Stewart
patent: 4562046 (1985-12-01), Hays et al.
patent: 4563334 (1986-01-01), Hays et al.
patent: 4681743 (1987-07-01), Skraba
patent: 4687642 (1987-08-01), Nielsen

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