US 12,077,497 B2
Process and apparatus for preparing purified styrene composition from styrene containing feedstock
Rahul Khandelwal, Katy, TX (US); Joseph C. Gentry, Houston, TX (US); Randi Wytcherley, Belgrade, MT (US); Kimberly Anderson, Bozeman, MT (US); Meta Naulita-Ellis, Bozeman, MT (US); Claudia Pudack, Zürich (CH); Celine Rioual, Chalampé (FR); Christoph Kirschner, Volketswil (CH); B. Bryant Slimp, Houston, TX (US); Manfred Stepanski, Buchs (CH); and Erik Temmel, Basel (CH)
Assigned to SULZER MANAGEMENT AG, Winterthur (CH)
Filed by SULZER MANAGEMENT AG, Winterthur (CH)
Filed on Dec. 6, 2023, as Appl. No. 18/531,135.
Application 18/531,135 is a division of application No. 17/916,554, granted, now 11,891,358, previously published as PCT/EP2021/062213, filed on May 7, 2021.
Claims priority of provisional application 63/022,109, filed on May 8, 2020.
Claims priority of application No. 20206224 (EP), filed on Nov. 6, 2020.
Prior Publication US 2024/0132426 A1, Apr. 25, 2024
Int. Cl. C07C 7/14 (2006.01); B01D 3/14 (2006.01); B01D 3/40 (2006.01); B01D 9/00 (2006.01); C07C 5/03 (2006.01); C07C 7/00 (2006.01); C07C 7/08 (2006.01)
CPC C07C 7/14 (2013.01) [B01D 3/143 (2013.01); B01D 3/40 (2013.01); B01D 9/0013 (2013.01); B01D 9/0031 (2013.01); B01D 9/0059 (2013.01); C07C 5/03 (2013.01); C07C 7/005 (2013.01); C07C 7/08 (2013.01); B01D 2009/0086 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A plant for preparing a purified styrene composition comprising at least one crystallization block, the crystallization block comprising:
at least one static crystallization section comprising one or more static crystallization stages,
at least one dynamic crystallization section comprising one or more dynamic crystallization stages, and
at least two conduits that fluidly couple at least one of the one or more static crystallization stages with at least one of the one or more dynamic crystallization stages.