Waste Stream Improvement in Propylene Oxide / Styrene Simultaneous Manufacturing Process

摘要

Contacting the organic stream with water and carbon dioxide, thereby extracting sodium from the organic stream, and separating the sodium salt-containing aqueous phase from the organic phase comprising a reduced sodium content. The organic stream may be a heavy residue formed in the co-production of propylene oxide and styrene. Contact is by combining the carbon dioxide and water, CC ₂ - a combination of contacting the saturated water stream and the organic stream, and / or the organic stream and the water-to form a saturated stream, and the CC ₂ Forming a mixture and injecting the carbon dioxide into the mixture as a gas. The method further comprises repeating said contact and said separation one or more times with respect to said organic phase, applying said organic phase to ion exchange, or both, to obtain an organic phase with further reduced sodium content. It may further comprise. Also provided is a system for performing the method.