Process for the production of butadiene (Lummus)

Process for the production of butadiene (Lummus)

Type	Patent
Inventor	Stephen Craig Arnold
Inventor	Anne Mae Gaffney
URL	Free Full Text Source:  http://www.google.com/patents/US8933284
Assignee	Lummus Technology Inc.
Patent Number	US8933284 B2
Issue Date	Jan 13, 2015
Abstract	Processes are provided for the production of butadiene from C4 containing feed stocks that contain isobutene and/or isobutane in addition to n-butene(s) and/or n-butane. The processes of the present invention generally comprise feeding the feed stock to a combination butenes isomerization reaction and distillation tower for conversion of 1-butene to 2-butenes and separation from isobutene and isobutane, followed by an oxydehydrogenation unit to convert n-butenes to butadiene. The processes may also include additional isomerization and/or dehydrogenation steps for the tower overhead and bottoms streams to create additional isobutene and/or n-butenes for valued/uses, which may include additional production of butadiene. The feed to the system may comprise any mixture or separate feeding of C4 olefins and C4 paraffins, at least one of which contains isobutene and/or isobutane.