Oxidative dehydrogenation process with hydrocarbon moderator gas and reduced nitrogen feed
US9902669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2014 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Dec 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2531/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.