Oxygenate conversion reactor catalyst coolers

Details Oxygenate conversion reactor catalyst coolers Oxygenate conversion reactor catalyst coolers

2009-10-01

2011-11-22

Bhat, Nina (Department: 1771)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Fluidized bed

C585S809000, C585S822000, C422S146000

Reexamination Certificate

active

08062599

ABSTRACT:
A catalyst cooled is employed for converting oxygenates to light olefins. The catalyst becomes spent as deposits from the reaction clog up pores on the catalyst surface. A portion of the spent catalyst is regenerated in a regenerator and a portion is circulated back to contact more of the oxygenate feedstream. A catalyst cooler attached to the reactor can cool the spent catalyst circulated through the cooler before the spent catalyst contacts more of the oxygenate feedstream. In an embodiment, all of the spent catalyst that enters the catalyst cooler is withdrawn from the bottom of the catalyst cooler.

REFERENCES:
patent: 4353812 (1982-10-01), Lomas et al.
patent: 5324418 (1994-06-01), Muldowney
patent: 5343929 (1994-09-01), Landua et al.
patent: 5452757 (1995-09-01), Lomas
patent: 5571482 (1996-11-01), Long et al.
patent: 7388120 (2008-06-01), van Egmond

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