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US 2026/0209147 A1Published application
Oxidative dehydrogenation with wastewater-derived oxygen
AssigneeNOVA Chemicals (International) S.A.
InventorsVasily SIMANZHENKOV, Ce YANG, Shahin GOODARZNIA, Sina MIRZAEIFARD
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Abstract
The present disclosure relates to oxidative dehydrogenation of ethane-containing feed streams with oxygen derived from electrolysis of wastewater.
Claims29
A method of producing ethylene, the method comprising:
- contacting an oxidative dehydrogenation feed stream comprising ethane and an oxidant stream comprising oxygen with an oxidative dehydrogenation catalyst to form a dehydrogenated stream comprising ethylene and water;
- separating the dehydrogenated stream to form a product stream comprising ethylene and a waste stream comprising water;
- and
- electrolyzing at least a portion of the waste stream comprising water to form a first electrolysis stream comprising oxygen and a second electrolysis stream comprising hydrogen;
- wherein the oxidant stream comprises at least a portion of the first electrolysis stream comprising oxygen.
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A system for producing ethylene, the system comprising:
- an oxidative dehydrogenation reactor configured to contact an oxidative dehydrogenation feed stream comprising ethane and an oxidant stream comprising oxygen with an oxidative dehydrogenation catalyst to form a dehydrogenated stream comprising ethylene and water;
- a separator configured to separate the dehydrogenated stream to form a product stream comprising ethylene and a waste stream comprising water;
- and
- an electrolyzer configured to electrolyze at least a portion of the waste stream comprising water to form a first electrolysis stream comprising oxygen and a second electrolysis stream comprising hydrogen, and to provide at least a portion of the first electrolysis stream to the oxidative dehydrogenation reactor.
1 more element
Dependencies are inferred from the claim text.