US 12,453,966 B2
Process and apparatus for reacting feed with a fluidized catalyst with a reduction in catalyst loss during startup
Richard A. Johnson, II, Algonquin, IL (US); John J. Senetar, Naperville, IL (US); Sathit Kulprathipanja, Schaumburg, IL (US); and Adam J. Kanyuh, Streamwood, IL (US)
Assigned to UOP LLC, Rosemont, IL (US)
Filed by UOP LLC, Des Plaines, IL (US)
Filed on Dec. 30, 2021, as Appl. No. 17/565,857.
Prior Publication US 2023/0211331 A1, Jul. 6, 2023
Int. Cl. B01J 38/02 (2006.01); B01J 8/18 (2006.01); B01J 8/24 (2006.01); C07C 5/333 (2006.01)
CPC B01J 38/02 (2013.01) [B01J 8/1836 (2013.01); B01J 8/24 (2013.01); C07C 5/333 (2013.01); B01J 2208/00168 (2013.01); B01J 2208/00504 (2013.01); B01J 2208/00548 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A reactor system comprising:
a. a reactor for contacting a reactant stream with a catalyst;
b. a start-up heater having lines for the reactant stream to be sent to said reactor; and
c. a valve configured to receive a stream obtained from a feed-effluent heat exchanger,
wherein said start-up heater provides sufficient heat to fluidize said catalyst sufficiently to allow for at least a 3 ft/sec superficial gas velocity in said reactor.