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US 9,809,512 B2Granted
Adsorptive recovery of butadiene from on purpose butadiene production
AssigneeUop LLC
InventorJohn J. Senetar
Life of this patent
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Abstract
A process is presented for the production of butadienes. The process includes the recovery of a crude butadiene stream using adsorption separation and removes the need to compress the effluent stream from the oxidative dehydrogenation process effluent stream. The process includes an adsorption step to remove C4 compounds from the oxidative effluent stream, a desorption step to recover the adsorbed C4 compounds and a regeneration step to regenerate the adsorbent for continued use in the separation process.
Claims8
A process for the production of butadienes comprising:
- passing a butene stream and an oxidative stream comprising light gasses including oxygen to an oxidative dehydrogenation reactor to generate a process stream comprising light gasses, unreacted oxygen and C4s including butenes and butadienes;
- passing the process stream to an adsorptive separation unit, comprising an adsorber, to generate a first stream comprising the light gasses and unreacted oxygen and retaining the C4s including the butenes and butadienes in the adsorber;
- passing a solvent stream to the adsorptive separation unit to generate a second stream comprising solvent and the C4s including the butenes and butadienes;
- passing the second stream to a solvent recovery unit to generate a third stream comprising C4s including the butenes and butadienes, and a fourth stream comprising solvent;
- and
- passing the third stream comprising C4s including the butenes and butadienes to a butadiene recovery unit to generate a product stream comprising butadienes.
3 more elements
Dependencies are inferred from the claim text.