Process for recovering ethylene from an olefin stream produced by a methanol to olefin reaction

摘要

A polymerizable grade of ethylene is recovered from an olefin- containing composition, prepared by the conversion of a methoxy compound to olefins, by a process which significantly reduces the requirements of the demethanizer distillation column through which hydrogen and methane are eliminated as impurities from the ethylene product without suffering economically unacceptable losses of ethylene to the hydrogen-methane fraction that is separated. The invention also provides for a C-2 splitter column of simplified requirements.