Patent ID: 8513476
Filing Date: 2013-08-20
Classification: C07C,C10G,Y02P

Abstract:
1. Process for production of light olefins from a feed containing triglycerides, characterized in that it maximizes the production of ethylene and propylene comprising the following steps: a) hydroconversion of a feed containing triglycerides with fatty acids of C9-C18 carbon chain, in contact with a hydrogen-rich gas stream, on a catalyst of metal oxides to produce: a fraction of fuel gas and water vapour; a gaseous fraction constituted principally of propane; and a liquid fraction of saturated hydrocarbons and dissolved gases; b) separation of the liquid fraction of saturated hydrocarbons comprising predominantly C9-C18 linear carbon chains; and c) fluid catalytic cracking of the separated liquid fraction, in petrochemical conditions, with a catalyst bed constituted predominantly of zeolites, in proportions between 30 and 70 wt. %, temperature at reactor outlet between 450° C. and 620° C., residence time between 1 and 10 seconds inside the reactor and with injection of steam between 5 and 50 wt. % relative to the feed entering the reactor.