System and method for reducing decomposition byproducts in a methanol to olefin reactor system
AssigneeExxonMobil Chemical Patents Inc.
InventorsStephen N. Vaughn, Gary T. Schmidt, Teng Xu, Christopher E. Dilley
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Abstract
The invention relates to a method for forming olefins from an oxygenate-containing feedstock, comprising contacting the at least partially vaporized feed comprising oxygenates with a first catalyst upstream of an OTO reactor, the first catalyst consisting of a reactive guard bed of metal oxides comprising one or more metals from Groups 2, 3, and 4 of the Periodic Table and/or one or more metals in the Lanthanide and Actinide series, then contacting the feedstock in the OTO reactor with a second catalyst under conditions effective to form an effluent comprising the olefins.
Claims20
A method for forming olefins from an oxygenate-containing feedstock, comprising:
- contacting the feedstock comprising oxygenates with a first catalyst upstream of an OTO reactor, the first catalyst consisting of a reactive guard bed of metal oxides of one or more metals from Groups 2, 3, and 4 of the Periodic Table and one or more metals in the Lanthanide and Actinide series;
- and then
- contacting the feedstock in the OTO reactor with a second catalyst under conditions effective to form an effluent comprising the olefins.
In a process for producing olefins from an oxygenate-containing feedstock comprising contacting the feedstock in an OTO reactor with an OTO catalyst under conditions effective to form an effluent comprising the olefins, the improvement comprising:
- contacting the feedstock comprising oxygenates upstream of the OTO reactor with a metal-containing catalyst consisting of a reactive guard bed of metal oxides of one or more metals from Groups 2, 3, and 4 of the Periodic Table and one or more metals in the Lanthanide and Actinide series.
Dependencies are inferred from the claim text.