Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By c content reduction – e.g. – cracking – etc.
Patent
1998-05-05
2000-09-12
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By c content reduction, e.g., cracking, etc.
585648, 585651, 585652, 585324, 20812001, 208113, 208121, C07C 406, C10G 1105
Patent
active
061180351
ABSTRACT:
A process for selectively producing C.sub.2 -C.sub.4 olefins from a catalytically cracked or thermally cracked naphtha stream is disclosed. A mixture of the naphtha stream and a stream of steam is feed into a reaction zone where it is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500 to 650.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia.
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Asplin John Ernest
Chen Tan-Jen
Fung Shun C.
Henry Brian Eric
Janssen Marcel J. G.
Exxon Research and Engineering Co.
Griffin Walter D.
Naylor Henry A.
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