Patent ID: 6482998
Filing Date: 2002-11-19
Classification: C07C,C10G,Y02P,Y10S

Abstract:
A process for converting an oxygenate to olefins, the process comprising:providing a feedstock having more than one component including the oxygenate, heating the feedstock from a first temperature to a second temperature, converting at least a portion of the oxygenate in the heated feedstock into an olefin-containing effluent in an oxygenate conversion reactor, and quenching the effluent with a medium at an initial temperature and in an amount sufficient for forming a light product fraction and a heavy product fraction wherein the light product fraction comprises light olefins and the heavy product fraction has a final temperature which is higher than the first temperature by at least about 5Â° C., wherein the heating includes transferring heat from at least a portion of the heavy product fraction to the feedstock to cause at least a portion of the feedstock to vaporize and form a vaporized feedstock, and wherein the feedstock has a boiling range ranging from 2Â° C. to about 30Â° C.