Method and apparatus for controlling introduction of catalysts i

Details Method and apparatus for controlling introduction of catalysts i Method and apparatus for controlling introduction of catalysts i

1993-04-21

1995-02-14

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208120, 208DIG1, 364500, 364502, C10G 1318

Patent

active

053892364

ABSTRACT:
The disclosed method and apparatus provides for providing addition of micro-spheroidal ("MS") Fluid Catalytic Cracking ("FCC") catalyst additives and/or bulk catalyst to an in situ circulating, active catalyst inventory of a fluid catalytic cracking unit at times and rates precisely controlled to sustain an effective additive concentration. In a preferred version of this invention, each of a series of such apparatus comprising one such device for each catalyst additive, is operated on a basic cycle time length during a portion of which the unit is engaged in active addition while in the remainder of the time it is passive.

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