Patent ID: 8237000

Claim:
A process for oxidative dehydrogenation of a hydrocarbon feedstock comprising: (a) providing an oxidative dehydrogenation reactor system containing a carbon dioxide oxidative dehydrogenation catalyst, said reactor containing an oxygen-selective membrane which separates the reactor into first and second gas passages; (b) feeding the hydrocarbon feedstock and carbon dioxide to the first gas passage, where the molar feed ratio of carbon dioxide to total hydrocarbon feedstock is 0.1 to 10; (c) feeding oxygen to the second gas passage to obtain oxygen transported through said membrane, where the molar feed ratio of oxygen to total hydrocarbon feedstock is 0.01 to 1.0; (d) contacting the hydrocarbon feedstock, carbon dioxide, and transported oxygen with the carbon dioxide oxidative dehydrogenation catalyst to produce a dehydrogenation product stream comprising a dehydrogenated hydrocarbon product, unreacted hydrocarbon feedstock, by-products and offgas; (e) feeding the dehydrogenation product stream to a primary separation section comprising a condensation system and a separation system; and (f) cooling and condensing at least a portion of the dehydrogenation product stream in the condensation system, and separating the unreacted hydrocarbon feedstock, condensed by-products and the offgas from the dehydrogenation product stream in the separation system.