Purge gas streams to stagnant zones within...

Details Purge gas streams to stagnant zones within... Purge gas streams to stagnant zones within...

2005-09-27

2009-11-24

Bullock, In Suk (Department: 1797)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S639000

Reexamination Certificate

active

07622625

ABSTRACT:
The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor the oxygenates with a catalyst to produce light olefins and wherein the reactor comprises at least two zones, a first zone wherein gas circulates at a faster rate than a second zone wherein a gas circulates at a slower rate; and inserting a quantity of inert gas into the second zone to increase circulation of any materials located in said second zone. The invention prevents accumulation of undesirable by-products within stagnant zones within the reactor and reduces the amount of coke deposited on catalyst or on surfaces within these zones.

REFERENCES:
patent: 4440871 (1984-04-01), Lok et al.
patent: 5095163 (1992-03-01), Barger
patent: 5126308 (1992-06-01), Barger et al.
patent: 5191141 (1993-03-01), Barger et al.
patent: 5744680 (1998-04-01), Mulvaney, III et al.
patent: 6051746 (2000-04-01), Sun et al.
patent: 6166282 (2000-12-01), Miller
patent: 6403854 (2002-06-01), Miller et al.
patent: 6459009 (2002-10-01), Miller et al.

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