PRODUCING MALEIC ANHYDRIDE FROM A C4 STREAM IN AN OXYGENATE TO OLEFIN PROCESS

摘要

Disclosed is a process for producing maleic anhydride from an oxygenate feedstock. A mixed C4 hydrocarbons is produced and refined from an oxygenate to olefin process and has low content of isobutene and isobutane. The mixed C4 hydrocarbon composition is then either directly be made into maleic anhydride or alternatively the mixed C4 hydrocarbon composition can first be hydrogenated to produced a stream rich in n-butane which can then used to produce maleic anhydride.