DEHYDRATION OF ETHYLBENZENE TO PRODUCE STYRENE Russian patent published in 2020 - IPC B01J8/02 B01J23/745 B01J23/76 B01J35/00 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a catalytic mixture for catalysis, a reactor system and a method of dehydrogenating ethylbenzene to produce styrene. Reactor system comprises a reactor plant accommodating a catalyst mixture, and an induction coil with the possibility of generating an alternating magnetic field inside the reactor installation when connected to a power supply. Catalytic mixture includes catalyst particles, which are in close contact with ferromagnetic material, wherein mixture contains either catalyst particles and ferromagnetic particles, mixed and treated to provide bodies of catalytic mixture, or bodies of catalytic particles, mixed with bodies of ferromagnetic material, and the smallest external size of bodies is in order of 1–2 mm or more, or ferromagnetic material includes one or more ferromagnetic macroscopic substrates, sensitive to induction heating, which are ferromagnets at temperatures up to an upper limit of a predetermined dehydrogenation temperature range, wherein one or more substrates are coated with an oxide, and the oxide is impregnated with catalyst particles. Method involves generation of alternating magnetic field inside reactor plant, wherein magnetic field passes through reactor plant, heating the catalyst mixture by inducing magnetic flux in the material, bringing the reaction stream containing ethylbenzene into contact with catalyst particles, reaction flow inside the reactor is heated by means of a magnetic field and the reaction flow is provided for interaction to ensure flow of the styrene product to be removed from the reactor.

EFFECT: invention provides simple and energy-saving dehydration of ethylbenzene to obtain styrene and maintaining high stability of the catalyst mixture, accurate control of reaction temperature, increasing thermodynamic potential and reducing side reactions, such as coking of a catalytic mixture and/or cracking of a reaction stream.

17 cl, 4 dwg