Process for the production and purification of vinyl...

Details Process for the production and purification of vinyl... Process for the production and purification of vinyl...

2008-07-01

2008-07-01

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

C585S441000, C203S009000

Reexamination Certificate

active

07393986

ABSTRACT:
Process for the production of vinyl aromatic monomers which comprises: a) feeding an aromatic stream and an olefinic stream to an alkylation unit; b) feeding the reaction product coming from the alkylation section to a first separation section; c) recovering the mono-alkylated aromatic hydrocarbon and the heavy bottom product from the first separation section; d) feeding the mono-alkylated aromatic to a dehydrogenation section; e) feeding the reaction product coming from the dehydrogenation section to a second purification/separation section; f) also feeding the heavy bottom product of step (c) to the second purification/separation section; g) recovering a stream consisting of the vinyl aromatic monomer with a purity higher than 99.7 by weight.

REFERENCES:
patent: 3408265 (1968-10-01), Ward
patent: 29 14 226 (1980-10-01), None

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