Title:
WASTE STREAM UPGRADING IN A PROPYLENE OXIDE/STYRENE COPRODUCTION PROCESS
Document Type and Number:
WIPO Patent Application WO/2018/144740
Kind Code:
A8
Abstract:
A method including contacting an organic stream with water and carbon dioxide, whereby sodium is extracted from the organic stream, and separating an aqueous sodium salt-containing phase from an organic phase comprising a reduced sodium content. The organic stream can be a heavy residue formed in the co-production of propylene oxide and styrene. Contacting can include combining the carbon dioxide with the water to form a CC2-saturated water stream and contacting tlie CC2-saturated water stream with the organic stream, and/or combining the organic stream and the water to form a mixture and injecting the carbon dioxide as a gas there into. The method can further include repeating the contacting and the separating one or more times on the organic phase, subjecting the organic phase to ion exchange, or both, to obtain an organic phase having a further reduced sodium, content, A system for carrying out the method is also provided.
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Inventors:
NAGY SANDOR (US)
NGUYEN HA (US)
LINDSEY DAN (US)
KIMMICH BARBARA (US)
BRUSCHI NICHOLAS (US)
MONTANO-LAWRENCE JAMES (US)
TURNER JUSTIN (US)
JACKSON DEBRA (US)
DEARTH ANTHONY (US)
NGUYEN HA (US)
LINDSEY DAN (US)
KIMMICH BARBARA (US)
BRUSCHI NICHOLAS (US)
MONTANO-LAWRENCE JAMES (US)
TURNER JUSTIN (US)
JACKSON DEBRA (US)
DEARTH ANTHONY (US)
Application Number:
PCT/US2018/016465
Publication Date:
March 07, 2019
Filing Date:
February 01, 2018
Export Citation:
Assignee:
LYONDELL CHEMICAL TECH LP (US)
International Classes:
C07C7/10; C07C15/46; C07D301/32
Attorney, Agent or Firm:
STONEBROOK, Michael, R. et al. (US)
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