公开(公告)号：WO2010036300A1

公开(公告)日：2010-04-01

申请号：PCT/US2009/004938

申请日：2009-09-02

Applicant: LYONDELL CHEMICAL TECHNOLOGY, L.P.

Inventor： LINDSEY, Daniel D. ,  RUFENER, Karl P.

IPC: C07C7/10 ,  C07C15/46

CPC classification number: C07C7/10 ,  C07C15/46

Abstract: In the co-production of propylene oxide and styrene monomer, there is produced a sodium-containing heavy residue stream previously suitable only as a low grade fuel. In accordance with the invention, the heavy residue stream is mixed with a hydrocarbon and an aqueous acid, and the resulting mixture is separated into an aqueous sodium salt-containing slurry phase and an organic phase reduced in sodium.

Abstract translation: 在环氧丙烷和苯乙烯单体的共同生产中，产生仅仅作为低等级燃料的钠盐重残余物流。 根据本发明，将重残余物流与烃和含水酸混合，将所得混合物分离成含钠盐水溶液相和钠还原的有机相。

公开(公告)号：WO2019152980A1

公开(公告)日：2019-08-08

申请号：PCT/US2019/016631

申请日：2019-02-05

Applicant: LYONDELL CHEMICAL TECHNOLOGY, L.P.

Inventor： ROSS-MEDGAARDEN, Elizabeth I. ,  LEYSHON, David W. ,  RUFENER, Karl P. ,  KONGKITISUPCHAI, Sunti ,  WOLFF, Richard J. ,  PETRY, Kimberly A.

IPC: C07D301/32 ,  B01D3/32

CPC classification number: C07D301/32 ,  B01D3/008 ,  B01D3/143 ,  B01D3/40 ,  B01D3/4227

Abstract: A propylene oxide separation system comprising a heavies distillation column configured to receive a crude propylene oxide stream and discharge a heavies purge bottoms comprising at least one impurity selected from acetone, methanol, aldehydes, aldehyde derivatives, water, heavy hydrocarbons comprising C 5+ , or combinations thereof, and discharge a heavies distillation column overhead stream comprising a majority of the propylene oxide entering with the crude propylene oxide stream, and a first extractive distillation column configured to receive the heavies distillation column overhead stream and a first extraction solvent stream comprising a hydrocarbon solvent, and discharge a lights purge overhead comprising at least one impurity selected from aldehydes (e.g., acetaldehyde, formaldehyde, etc.) methyl formate, methanol, water, C 3 hydrocarbons, C 4 hydrocarbons, or combinations thereof, and discharge a rich solvent bottoms stream comprising a majority of the propylene oxide entering via the heavies distillation column overhead stream. A propylene oxide purification method is also provided.