Patent ID: 6965057
Filing Date: 2005-11-15
Classification: B01J,C07C,C10G,Y02P

Abstract:
1. A process for converting an oxygenate feedstock into an olefin product stream comprising: a) contacting an oxygenate feedstock with a molecular sieve catalyst in a reactor under conditions effective to convert the feedstock into an olefin product stream and to form carbonaceous deposits on the catalyst; b) contacting at least a portion of said catalyst having said carbonaceous deposits with an oxygen containing gas under conditions effective to obtain a regenerated catalyst having a reduced carbonaceous deposit level and having an increased molecular oxygen content; c) removing at least 60% by volume of said molecular oxygen from said regenerated catalyst based upon the total volume of said molecular oxygen; d) returning said regenerated catalyst to said reactor; and e) repeating steps (a)–(d).