METHOD FOR EXTRACTING PURE STYRENE FROM A PYROLYSIS BENZINE FRACTION

METHOD FOR EXTRACTING PURE STYRENE FROM A PYROLYSIS BENZINE FRACTION

Extraction of pure styrene with polymerization quality from styrene containing pyrolysis benzol fraction, by extractive distillation, comprises fractionation of the benzol fraction, in a partition column (2), into a C 8 core fraction (5), C 7- fraction (4) and C 9+ fraction; selective hydrogenation...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: GEHRKE, HELMUT
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:Extraction of pure styrene with polymerization quality from styrene containing pyrolysis benzol fraction, by extractive distillation, comprises fractionation of the benzol fraction, in a partition column (2), into a C 8 core fraction (5), C 7- fraction (4) and C 9+ fraction; selective hydrogenation of the C 8 core fraction having phenylacetylene and extractive distillation of the C 8-fraction into styrene fraction and styrene-poor fraction.