Process for hydrotreating biomass oil diluted in a refinery stream of petroleum hydrocarbons

摘要

The co-processing combines a first selective catalytic bed consisting only one metal elements selected from group VIB and of at least one conventional hydrotreating bimetallic catalytic bed, with control of the hydroconversion reactions of the triglycerides and/or fatty acids of biomass oil diluted in a refinery stream of petroleum hydrocarbons, minimising the generation of gaseous products that are undesirable to the process while maintaining the levels of unsaturated hydrocarbons hydrogenation and of heteroatomic contaminants removal from the refinery stream of petroleum hydrocarbons. Those n-paraffins of even number of carbon atoms, generated from the biomass oil, are incorporated in a hydrotreated liquid product in petroleum refining HDT units.