公开(公告)号：US20200261823A1

公开(公告)日：2020-08-20

申请号：US16062752

申请日：2016-12-07

Applicant: BASF SE ,  Kolon Plastics Inc.

Inventor： Achim STAMMER ,  Thomas HEITZ ,  Marvin KRAMP ,  Jong-Moon KIM ,  In-Gi CHO ,  Jin-Sang CHOI ,  Sang-Yup LEE

IPC: B01D3/00 ,  C07D323/06

Abstract: The present invention relates to a process for energy recovery in a process for the preparation of 1,3,5-trioxane.

公开(公告)号：US20190322634A1

公开(公告)日：2019-10-24

申请号：US16315345

申请日：2017-07-19

Applicant: BASF SE ,  Dow Global Technologies LLC

Inventor： Joaquim Henrique TELES ,  Marvin KRAMP ,  Christian MUELLER ,  Nicolai Tonio WOERZ ,  Bernd METZEN ,  Tobias KELLER ,  Dominic RIEDEL ,  Heiner SCHELLING ,  Markus WEBER ,  Daniel URBANCZYK ,  Andrei-Nicolae PARVULESCU ,  Ulrike WEGERLE ,  Ulrich MUELLER ,  Meinolf WEIDENBACH ,  Werner J. WITZI

IPC: C07D301/32 ,  C07D303/04 ,  B01D3/14

Abstract: Disclosed is a process for purifying propylene oxide. A stream S0 containing propylene oxide, acetonitrile, water, and an organic compound containing one or more of acetone and propionaldehyde is provided. Propylene oxide is separated from S0 by subjecting S0 to distillation in a first distillation unit, obtaining a gaseous top stream S1c enriched in propylene oxide, a liquid bottom stream S1a enriched in acetonitrile and water, and a side stream S1b containing propylene oxide and enriched in the carbonyl compound; reacting the carbonyl compound in S1b with an organic compound containing an amino group to obtain a reaction product; separating propylene oxide from the reaction product in a second distillation unit, obtaining a gaseous top stream S3a enriched in propylene oxide and a liquid bottoms stream S3b enriched in the reaction product; and introducing stream S3a into the first distillation unit.