{HEAD ~ The co processing} provides control of the hydroconversion reactions of the triglycerides and fatty acids of biomass oil diluted in a refinery stream of petroleum hydrocarbons and minimizes {TAIL ~ 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 
minimizes
{ HEAD ~ The co processing } provides control of the hydroconversion reactions of the triglycerides and fatty acids of biomass oil diluted in a refinery stream of petroleum hydrocarbons and minimizes { TAIL ~ 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
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