Process of converting ethylbenzene to styrene by catalytic dehyd

Details Process of converting ethylbenzene to styrene by catalytic dehyd Process of converting ethylbenzene to styrene by catalytic dehyd

1980-03-11

1981-09-01

Gantz, Delbert E.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

Having alkenyl moiety, e.g., styrene, etc.

585442, 585444, 585445, C07C 5333

Patent

active

042873754

ABSTRACT:
The invention relates to a process of converting ethylbenzene to styrene by catalytic dehydrogenation at temperatures of about 600.degree. C. in the presence of water vapor in a tubular reactor. The heat required for the dehydrogenation is fed to the tubular reactor with a molten salt bath. The dehydrogenation is effected isothermally and in a single stage under atmospheric pressure or preferable under a subatmospheric pressure with a water vapor-ethylbenzene ratio of 1.2 to 1.5 kg of water vapor per kg of ethylbenzene. The temperature of the ethylbenzene-water-vapor mixture entering the tubular reactor is maintained 50.degree. to 100.degree. C. below the temperature of the molten salt bath.

REFERENCES:
patent: 2374826 (1945-05-01), Mayland
patent: 3100807 (1963-08-01), Hatfield et al.
patent: 3158564 (1964-11-01), Cole
patent: 3702346 (1972-11-01), Kellar
patent: 3807963 (1974-04-01), Smith
patent: 4049579 (1977-09-01), Manning

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