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US 10,662,131 B2Granted
Process for butadiene production via oxidative dehydrogenation followed by direct dehydrogenation
OwnerJohn J. Senetarinventor
Life of this patent
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Abstract
A process is presented for the production of butadiene from a mixture of butane/butene feed. The process provides high conversion of the feed by oxidative dehydrogenation of the feed. The process enables recovery of a good portion of heat inputted from the reaction effluent. The process overcomes equilibrium limitations by oxidative dehydrogenation of butane/butene feed to produce butadiene.
Claims18
A process for producing butadiene, comprising:
- passing a feed stream comprising n-butane and n-butenes to an oxidative dehydrogenation reaction unit comprising an oxidative dehydrogenation catalyst to generate an effluent stream comprising n-butane, n-butenes and butadiene, wherein the oxidative dehydrogenation reaction unit is operated to have the effluent stream leave the oxidative dehydrogenation reaction unit at a temperature about 300° C. to about 600° C.;
- heating the effluent stream to a temperature of about 600° C. to about 700° C.;
- and
- passing the effluent stream to a direct dehydrogenation unit comprising a dehydrogenation catalyst to generate a process stream comprising butadiene.
1 more element
A process for producing butadiene, comprising:
- passing a feed stream comprising n-butane and n-butenes to an oxidative dehydrogenation reaction unit comprising an oxidative dehydrogenation catalyst to generate an effluent stream comprising n-butane, n-butenes and butadiene, wherein the oxidative dehydrogenation reaction unit is operated to have the effluent stream leave the oxidative dehydrogenation reaction unit at a temperature about 300° C. to about 600° C.;
- passing steam and oxygen along with the feed stream to the oxidative dehydrogenation reaction unit;
- heating the effluent stream to a temperature of about 600° C. to about 700° C.;
- passing the effluent stream to a direct dehydrogenation unit comprising a dehydrogenation catalyst to generate a process stream comprising butadiene;
- and
- passing the process stream to a heat and product recovery unit to generate a crude C4 product stream.
3 more elements
Dependencies are inferred from the claim text.