OP-II-3

OP-III-B-17CATALYTIC DEHYDRATION OF BIOETHANOL TO ETHYLENE:PILOT-SCALE STUDIES AND PROCESS SIMULATIONKagyrmanova A.P., Chumachenko V.A., Korotkikh V.N.,Kashkin V.N., Noskov A.S.Boreskov Institute of Catalysis of SB RAS, Pr. Lavrentieva, 5,Novosibirsk, 630090, Russia, aigana@catalysis.ruEthylene is a basic product for many applications in the petrochemical industry.The steam cracking process, which employs petroleum fractions and natural gasliquids as feedstocks, is a dominant method for large-scale ethylene productionworldwide. Due to increasing of oil prices, bio-ethanol dehydration process could beregarded as cost competitive to steam cracking and a promising technology inproducing high purity ethylene from renewable biomass resourses [1].In this work the process of ethylene production by bio-ethanol dehydration overalumina oxide catalysts has been studied at multiscale approach.Catalyst screening and activity testing of BIC proprietary and commercialalumina-based catalysts in the reaction of ethanol dehydration have been resulted toa selection of highly active samples with low selectivity towards undesirable byproductssuch as diethyl ether, butylene and acetaldehyde. Kinetic studies wereconducted in a differential reactor over potentially interesting alumina-based catalystsat normal pressure and within temperature interval of 370-450°C. This enabled todetermine the reaction networks, to estimate parameters of the kinetic model, and tofind the optimal conditions that provides the maximum ethylene yeild.To study theinfluence ofoperationconditions anddetermine theoptimaltechnologicalregimes in theunit of anindustrial multitubularpackedFig. 1. Sketch of the pilot set-up.213