III International Conference

PP-III-71DEVELOPMENT OF NEW CATALYSTS AND TECHNOLOGY OF PROPYLENEPRODUCTION BY PROPANE DEHYDROGENATION IN FLUIDIZED BEDKotelnikov G.R., Titov V.I., Shutkin A.S., Komarov S.M., Bespalov V.P.Joint Stock company Research Institute “Yarsintez” (OAO NII “Yarsintez”), Yaroslavl, RussiaE-mail: postprof@mail.ruThe results of development of new high-effective catalysts and technology of propyleneproduction by propane dehydrogenation in fluidized bed are listed below. New catalystsdeveloped by OAO NII “Yarsintez” are characterized by high strength and improveddehydrogenation properties. Reactor system of propylene production is optimized.Propylene consumption growth in Russia in recent years is 5-7 % per year. That is firstlyexplained by trend of polypropylene quota increasing and substitution of other polymermaterials by polypropylene, which is characteristic feature of Russia like of other countries.Besides that producing of chemical products on the base of propylene such as isopropanol,propylene oxide, acrylonitrile, butyl alcohols and others is stably increased.Propylene production in Russia like in majority of other countries is based on ethylene(base product) production by pyrolysis of different hydrocarbon feedstock and on oil-refiningprocesses. Capacities of pyrolysis plants and oil refineries are limited and completely used,that’s why there are no reserves of propylene production in the country. Propanedehydrogenation is one of the variants of propylene production. This process is especiallyattractive when cheap propane is available. Propane resources in Russia are great. In thisconnection construction of complexes of propylene production by propane dehydrogenation isexpedient.The existing commercial processes of propylene production by propane dehydrogenationprovide conversion of 30-40 % wt. at selectivity of 80-85 % wt.In the recent time at OAO NII “Yarsintez” there are obtained such catalysts samples thatprovide selectivity not below 85 % at conversion of 40-45 % in propane dehydrogenationprocess. These catalysts possess unique thermal stability. They keep catalytic properties aftercalcination at 1000 0 C for many hours, what guarantees long operation of new catalysts. Thecatalysts are characterized by high mechanical strength. In propylene production process thecatalyst consumption will not exceed 2,0 kg/t of olefin.New reactor design is proposed. Reactors optimization and new catalysts allow to reachpropane conversion up to 45 % at it volumetric feed rate of 300-400 h -1 and high selectivity.602