Process for Converting Oxygenates to Olefins

摘要

A process for converting oxygenates to olefins comprising: a) contacting an oxygenate containing stream with a molecular sieve catalyst in an oxygenate to olefins conversion reactor under oxygenate to olefins conversion conditions to form an effluent comprising olefins; b) quenching the effluent by contacting with water; and c) contacting the quenched olefin stream with a molecular sieve to remove at least a portion of the water from the quenched olefin stream wherein the molecular sieve has a dimethyl ether adsorption capacity of less than 0.1 wt %.

主权项

1. A process for removing water from an olefin stream comprising:
a. providing an olefin stream, wherein the olefin stream comprises water and greater than 50 wt % ethylene, propylene, or a combination thereof, based on total weight of the olefin stream; and b. contacting the provided olefin stream with a zeolite-3A and/or a zeolite-4A molecular sieve to remove at least a portion of the water from the olefin stream wherein the molecular sieve has a dimethyl ether adsorption capacity of less than 0.1 wt %.