A PROCESS AND APPARATUS FOR PREPARING A PURIFIED STYRENE COMPOSITION USING A DIVIDED-WALL COLUMN AND A CRYSTALLIZATION UNIT

The present invention relates to a method for preparing a purified styrene composition, wherein the method comprises the following steps:a) providing a crude hydrocarbon composition containing styrene,b) subjecting the crude hydrocarbon composition provided in step a) to a distillation in a divided-...

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Bibliographische Detailangaben
Hauptverfasser: KHANDELWAL, Rahul, GENTRY, Joseph C, TEMMEL, Erik, STEPANSKI, Manfred
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:The present invention relates to a method for preparing a purified styrene composition, wherein the method comprises the following steps:a) providing a crude hydrocarbon composition containing styrene,b) subjecting the crude hydrocarbon composition provided in step a) to a distillation in a divided-wall column so as to produce an overhead hydrocarbon stream, a bottom hydrocarbon stream and a side hydrocarbon stream andc) subjecting the side hydrocarbon stream obtained in step b) to at least one crystallization step so as to obtain a purified styrene composition.