Purge gas streams to stagnant zones within oxygenate-to-olefin reactor

The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor (2) 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 secon...

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Bibliographic Details
Main Authors MYERS, DANIEL N, PALMAS, PAOLO
Format Patent
LanguageEnglish
Published 12.04.2012
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:The present invention comprises a process for conversion of oxygenates to olefins comprising contacting within a reactor (2) 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.
Bibliography:Application Number: AU20050301200