Abstract: An integrated process for the production of propene from a mixture of alcohols obtained by IBE (Isopropanol-Butanol-Ethanol) fermentation from at least one renewable source of carbon is disclosed. The process is characterized by dehydration of the alcohols in order to generate ethene, propene and linear butenes, respectively. The olefin mixture is then directed to an isomerization bed in order to generate 2-butene from 1-butene, followed by a metathesis bed to react ethene and 2-butenes to generate additional propene. This process exhibits a yield in carbon moles higher than 90% propene with respect to the alcohols produced in the fermentation step.

Abstract: The present invention relates to a process for the production of propene from a mixture of alcohols obtained from at least one renewable source of carbon, comprising the following steps: (a) fermentation of at least one renewable source of carbon for the production of a mixture of alcohols comprising ethanol, isopropanol and 1-butanol; (b) simplified removal of the alcohols from the fermentative wort to generate an aqueous solution containing chiefly ethanol, isopropanol and 1-butanol; (c) joint dehydration of the alcohols to produce a mixture of olefins comprising chiefly ethene, propene and linear butenes, the linear butenes being a mixture of 1-butene and 2-butenes (cis and trans isomers), besides water and by-products, among which oxygenated compounds; (d) removal of water, oxygenated compounds and other by-products to generate a mixture of olefins comprising chiefly ethene, propene and linear butenes; and (f) passing the mixture of olefins through an isomerized bed, so that 1-butene will be isomerized to