FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a purified styrene-containing composition. Method includes the following steps: a) providing a crude hydrocarbon composition containing styrene, b) distilling the crude hydrocarbon composition provided in step a) in column (14) with a separation wall to obtain an overhead hydrocarbon stream, a hydrocarbon bottom stream and a side hydrocarbon stream, and c) at least one crystallisation step of the hydrocarbon side stream obtained in step b) to obtain a purified styrene-containing composition. Invention also relates to a device.
EFFECT: invention enables to efficiently obtain a highly pure styrene-containing composition.
15 cl, 3 dwg, 2 tbl
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