ADSORPTIVE RECOVERY OF BUTADIENE FROM ON PURPOSE BUTADIENE PRODUCTION

摘要

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.

主权项

1. A process for the production of butadienes comprising:
passing a butene stream and an oxidative stream comprising oxygen to an oxidative dehydrogenation reactor to generate a process stream comprising C4s; passing the process stream to an adsorptive separation unit, comprising an adsorber, to generate a first stream with a reduced C4 content and retaining the C4s in the adsorber; passing a solvent stream to the adsorptive separation unit to generate a second stream comprising C4s and solvent; passing the second stream to a solvent recovery unit to generate a third stream comprising C4s, and a fourth stream comprising solvent; and passing the third stream to a butadiene recovery unit to generate a product stream comprising butadienes.