Oxygenate To Olefins Process Involving Supercritcal Conditions
AssigneeExxonMobil Chemical Patents Inc.
InventorsLuc R. M. Martens, Stephen N. Vaughn, John R. Shutt
Life of this patent
Estimating the term…
Abstract
This invention, in one embodiment, is drawn to a process for forming olefin product by contacting an oxygenate with an olefin-forming catalyst under supercritical conditions to form an olefin product. This invention also relates to methods for activating molecular sieve catalyst, regenerating molecular sieve catalyst, and forming and/or disposing a co-catalyst within a molecular sieve catalyst, each under supercritical conditions.
Claims18
A process for forming olefin product, comprising:
- contacting supercritical oxygenate with an olefin-forming catalyst to form an olefin product comprising olefin, water and unreacted oxygenate;
- reducing pressure, temperature or a combination of pressure and temperature of the olefin product below supercritical;
- and
- separating at least a portion of the olefin from the water and unreacted oxygenate.
A process for regenerating a coked or partially coked molecular sieve catalyst, comprising:
- contacting a supercritical fluid with a molecular sieve catalyst containing pores within which coke is disposed to extract at least a portion of the coke from pores of the catalyst.
A process for forming a co-catalyst within a molecular sieve catalyst, comprising:
- contacting the molecular sieve catalyst having a porous framework structure with a pre-treatment composition at supercritical conditions in a pre-treatment zone to form an integrated hydrocarbon co-catalyst within the porous framework of the molecular sieve.
A process for activating a molecular sieve catalyst, comprising:
- contacting with a supercritical fluid the molecular sieve catalyst having pores within which a template is disposed to remove the template from the catalyst pores.
A process for forming olefin product, comprising:
- contacting oxygenate with an olefin-forming catalyst in a reactor to form an olefin product comprising olefin, water, and unreacted oxygenate, wherein the reactor is maintained under temperature and pressure conditions such that at least the oxygenate and the olefin product are under supercritical conditions;
- reducing pressure, temperature, or a combination of pressure and temperature of the olefin product below supercritical;
- and
- separating at least a portion of the olefin from the water and unreacted oxygenate.
Dependencies are inferred from the claim text.