Eb/sm splitter heat recovery

Details Eb/sm splitter heat recovery Eb/sm splitter heat recovery

C - Chemistry, Metallurgy

07

C

C07C 5/333 (2006.01) C07C 7/04 (2006.01) C07C 15/46 (2006.01)

Patent

CA 2487172

Improved methods and related apparatus are disclosed for efficiently recovering the heat of condensation from overhead vapor produced during separation of various components of dehydrogenation reaction effluent, particularly in ethylbenzene-to-styrene operations, by the use of at least a compressor to facilitate azeotropic vaporization of an ethylbenzene and water mixture within a preferred range of pressure/temperature conditions so as to minimize undesired polymerization reactions.

Cette invention concerne des procédés et un dispositif connexe améliorés pour la récupération efficace de chaleur de condensation dégagée par la vapeur de tête qui est produite pendant la séparation de divers composants d'un effluent de réaction de déshydrogénation, en particulier au cours des opérations de séparation de l'éthylène benzène et du styrène. L'utilisation d'au moins un compresseur destiné à faciliter la vaporisation azéotropique d'un mélange d'éthylène benzène et d'eau à l'intérieur d'une plage préférée de conditions de pression/température permet de réduire les réactions indésirables de polymérisation.

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