Patent ID: 9604888
Date: 2017-03-28
CPC Classifications: C07C,C10G,Y02P

Claim:
1. A method of producing ethylene and propylene comprising: a) subjecting a feedstock to steam cracking in a steam cracker having a cracker pyrolysis furnace to produce a first olefin containing stream; b) heating an ethanol containing stream with heat from the cracker pyrolysis furnace; c) passing the heated ethanol containing stream over a dehydration catalyst at a temperature between 200° C. to 500° C. to produce a second olefin containing stream comprising aldehydes, and treating the second olefin containing stream to reduce the aldehyde content thereof prior to combination with the first olefin containing stream; d) combining the first olefin containing stream and second olefin containing stream to give an initial product stream comprising ethylene and propylene; and e) subjecting the initial product stream to purification comprising at least: