05714662 is referenced by 92 patents and cites 21 patents.

A process is disclosed for the production of light olefins from a hydrocarbon gas stream by a combination of reforming, oxygenate production, and oxygenate conversion wherein a crude methanol stream--produced in the production of oxygenates and comprising methanol, light ends, and heavier alcohols--is passed directly to the oxygenate conversion zone for the production of light olefins. Furthermore, the combination provides the synergy for increased catalyst life and reduced water treatment costs by recycling by-product water produced in the oxygenate conversion zone to provide water to the syngas production zone. The advantage of this integration is the elimination of costly methanol separation and purification steps which result in the overall reduction in the costs of producing the light olefins. Other advantages include the reduction in catalyst cost in the oxygenate production zone by the reduction in the catalyst selectivity by the extension of catalyst life in the oxygenate production zone. In addition, a portion of the by-product water can be combined with a propylene stream to provide a high octane blending component for gasoline. The propylene and butylene fractions produced by the above integrated scheme are further converted to high octane ether and other high value products.

Title
Process for producing light olefins from crude methanol
Application Number
8/513242
Publication Number
5714662
Application Date
August 10, 1995
Publication Date
February 3, 1998
Inventor
Henning R Nilsen
Lier
NO
Terry L Marker
Warrenville
IL, US
Bipin V Vora
Darien
IL, US
Agent
Richard P Silverman
John G Tolomei
Thomas K McBride
Assignee
UOP
IL, US
IPC
C01B 25/45
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