Conversion process
AssigneeExxonMobil Chemical Patents Inc.
InventorsMarcel J. G. Janssen, Teng Xu, Cor F. Van Egmond, Keith H. Kuechler, Stephen N. Vaughn, James Harding Beech, Jr.
Life of this patent
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Abstract
The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalyst composition, wherein the feedstock is free of or substantially free of metal salts.
Claims5
A process for converting oxygenate to olefin, comprising the steps of:
- a) providing an oxygenate composition having a positive conductivity of not greater than 10 uS/cm and containing at least one Group IA or Group IIA metal salt;
- b) contacting the oxygenate composition with a molecular sieve to convert oxygenate in the oxygenate composition to olefin;
- and
- c) converting the olefin to polyolefin.
A process for converting oxygenate to olefin, comprising the steps of:
- a) providing an oxygenate composition containing at least one Group IA or Group IIA metal salt;
- b) reducing conductivity of the oxygenate composition to form a treated feedstock having a conductivity of not greater than 10 uS/cm;
- c) contacting the treated feedstock with a molecular sieve to convert oxygenate in the oxygenate composition to olefin, and
- d) converting the olefin to polyolefin.
An integrated process for making one or more olefin(s), the integrated process comprising the steps of:
- (a) passing a hydrocarbon feedstock to a syngas production zone to producing a synthesis gas stream;
- (b) contacting the synthesis gas stream with a catalyst to form an oxygenated feedstock;
- (c) converting the oxygenated feedstock containing less than 50 ppm of a Group IA metal salt and/or a Group IIA metal salt into the one or more olefin(s) in a reactor in the presence of a molecular sieve catalyst composition;
- and
- (d) polymerizing the one or more olefin(s) in the presence of a polymerization catalyst into a polyolefin at a rate greater than 1,000 Kg/hour wherein the hydrocarbon feedstock of step (a) comprises a gas.
A process of converting an oxygenated feedstock into one or more olefin(s) in the presence of a molecular sieve catalyst composition comprising a molecular sieve, the process comprising the steps of:
- (a) passing a hydrocarbon feedstock to a syngas production zone producing a synthesis gas stream;
- (b) contacting the synthesis gas stream with a catalyst to form the oxygenated feedstock;
- (c) transporting the oxygenated feedstock containing a first amount of a Group IA metal salt and/or a Group IIA metal salt;
- (d) removing from the oxygenated feedstock the Group IA metal salt and/or the Group IIA metal salt such that feedstock contains a second amount of the Group IA and/or Group IIA metal salt to form a treated oxygenated feedstock, wherein the second amount is less than the first amount;
- (e) converting the treated oxygenated feedstock into the one or more olefin(s) in a reactor in the presence of a molecular sieve catalyst composition;
- and
- (f) polymerizing the one or more olefin(s) in the presence of a polymerization catalyst into a polyolefin at a rate greater than 1,000 Kg/hour, wherein the hydrocarbon feedstock of step (a) comprises a gas.
Dependencies are inferred from the claim text.