Process to make olefins from oxygenates

Patent metadata

Field	Value
Publication number	US-8957271-B2
Application number	US-200913000364-A
Country	US
Kind code	B2
Filing date	Jun 24, 2009
Priority date	Jun 25, 2008
Publication date	Feb 17, 2015
Grant date	Feb 17, 2015

Abstract

The present invention relates to a process to make light olefins, in a combined XTO-OC process, from an oxygen-containing, halogenide-containing or sulphur-containing organic feedstock comprising:
a) providing a catalyst comprising zeolitic molecular sieves containing 10 member and larger channels in their microporous structure,
b) providing an XTO reaction zone, an OC reaction zone and a catalyst regeneration zone, said catalyst circulating in the three zones, such that at least a portion of the regenerated catalyst is passed to the OC reaction zone, at least a portion of the catalyst in the OC reaction zone is passed to the XTO reaction zone and at least a portion of the catalyst in the XTO reaction zone is passed to the regeneration zone;

c) contacting said oxygen-containing, halogenide-containing or sulphur-containing organic feedstock in the XTO reactor with the catalyst at conditions effective to convert at least a portion of the feedstock to form a XTO reactor effluent comprising light olefins and a heavy hydrocarbon fraction;

d) separating said light olefins from said heavy hydrocarbon fraction;

e) contacting said heavy hydrocarbon fraction in the OC reactor with the catalyst at conditions effective to convert at least a portion of said heavy hydrocarbon fraction to light olefins.

First claim

The invention claimed is:

1. A process of making light olefins comprising:
selecting a zeolite having an Si/Al ratio between 4 and 30 from an H + or NH 4 + form of MFI, MEL, FER, MOR, or clinoptilolite;
steaming the zeolite at a temperature ranging from 400 to 870° C. for 0.01-200 h;
leaching the zeolite with an aqueous acid solution at conditions effective to remove at least 10% of Al from the zeolite;
contacting the zeolite with an aqueous solution containing a source…

Assignees

• Nesterenko Nikolai
• Vermeiren Walter
• Grasso Giacomo
• Van Donk Sander
• Garcia Wolfgang
• Total Res & Technology Feluy

Inventors

• Nesterenko Nikolai
• Vermeiren Walter
• Grasso Giacomo
• Van Donk Sander
• Garcia Wolfgang

Classifications

• B01J29/40

  Operations & Transport · mapped topic

• B01J2229/16

  Operations & Transport · mapped topic

• C10G2400/20

  Chemistry & Metallurgy · mapped topic

• C07C1/22 Primary

  Chemistry & Metallurgy · mapped topic

• B01J29/90

  Operations & Transport · mapped topic