Oxidative Dehydrogenation Process With Hydrocarbon Moderator Gas and Reduced Nitrogen Feed

摘要

Oxidative dehydrogenation includes: (a) providing a gaseous feed stream to a catalytic reactor, the feed stream comprising a dehydrogenation reactant, oxygen, superheated steam, hydrocarbon moderator gas and optionally nitrogen, wherein the molar ratio of moderator gas to oxygen in feed stream is typically from 4:1 to 1:1 and the molar ratio of oxygen to nitrogen in the feed stream is at least 2; (b) oxidatively dehydrogenating the reactant in the reactor to provide a dehydrogenated product enriched effluent product stream; and (c) recovering dehydrogenated product from the effluent product stream. One preferred embodiment is a process for making butadiene including dimerizing ethylene to n-butene in a homogeneous reaction medium to provide a hydrocarbonaceous n-butene rich feed stream and oxidatively dehydrogenating the n-butene so formed.

主权项

1. A method of oxidatively dehydrogenating a dehydrogenation reactant comprising:
(a) providing a gaseous feed steam to a catalytic reactor, the feed stream comprising a dehydrogenation reactant, oxygen, superheated steam and a hydrocarbon moderator gas,
wherein the molar ratio of hydrocarbon moderator gas to oxygen in the feed stream is from 50:1 to 0.5:1; (b) oxidatively dehydrogenating the dehydrogenation reactant in the reactor to generate an effluent product stream enriched in a dehydrogenated product derived from said dehydrogenation reactant; and (c) recovering said dehydrogenated product from the effluent product stream.