Chemistry of hydrocarbon compounds – Aromatic compound synthesis – Having alkenyl moiety – e.g. – styrene – etc.
Patent
1985-12-17
1986-12-09
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
Having alkenyl moiety, e.g., styrene, etc.
585402, 585440, 585914, C07C 402
Patent
active
046281363
ABSTRACT:
An improved process for the production of styrene through dehydrogenation of ethylbenzene in the presence of steam at elevated temperatures, comprising (1) recovering heat of condensation normally lost during separation of the various components of the dehydrogenation reaction effluent, especially of ethylbenzene from styrene, without need or use of a compressor and (2) using such heat to vaporize an aqueous feed mixture of ethylbenzene and dilution water that is introduced into the dehydrogenation reactor, preferably at about atmospheric pressure, thereby obviating the need to use steam to vaporize the liquid ethylbenzene feed and also enabling much of the diluent steam needed as sensible heat for the dehydrogenation reaction to be generated from water.
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patent: 3408263 (1968-10-01), Ward
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patent: 3515764 (1970-06-01), Hallman et al.
patent: 3690839 (1972-09-01), Jones
patent: 3691020 (1972-09-01), Hughes
Blauvelt James N.
Davis Curtis R.
Lummus Crest Inc.
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