Process for the manufacture of diesel range hydrocarbons

摘要

The invention relates to a process for the manufacture of diesel range hydrocarbons wherein a feed is hydrotreated in a hydrotreating step and isomerised in an isomerisation step, and a feed comprising fresh feed containing more than 5 wt% of free fatty acids and at least one diluting agent is hydrotreated at a reaction temperature of 200-400°C, in a hydrotreating reactor in the presence of catalyst, and the ratio of the diluting agent/fresh feed is 5 - 30:1.