Controlling cold flow properties of transportation fuels from renewable feedstocks

摘要

A process for improving cold flow properties of diesel range hydrocarbons produced from renewable feedstocks such as plant oils and animal oils. A renewable feedstock is treated by hydrogenating and deoxygenating to provide an effluent comprising paraffins followed by isomerizing and selectively hydrocracking at least a portion of the paraffins to generate a diesel range hydrocarbon product. A portion of the diesel range hydrocarbon product is selectively separated and recycled to the isomerization and selective hydrocracking zone.