| abstract |
C 4 A process for recovering butadiene from the fraction has been disclosed. The process comprises reacting an organic solvent comprising an overhead fraction comprising at least a portion of water and butene, butane, and a second organic fraction comprising butane, butene, and butadiene to recover a first bottom fraction comprising at least a portion of organic solvent, butadiene, Contacting a mixed C 4 stream with a solvent comprising an organic solvent and water in a butadiene pre-adsorber column; Feeding the first bottom fraction to a butadiene extraction unit to recover the butene fraction, the crude butadiene fraction and the organic solvent fraction; . ≪ / RTI > |