Method for upgrading bio-based material and upgraded material

A method for upgrading a bio-based material, comprising:

• (A) providing a bio-based fresh feed material of bio-renewable oils and/or fats having a glycerol-equivalent content of 2 wt.-% to 60 wt.-% relative to a total weight of the bio-based fresh feed material, wherein the bio-renewable oil(s) and/or fat(s) in the bio-based fresh feed material have been pretreated to reduce contaminants in the bio-based fresh feed material;
• (B) subjecting a hydrotreatment feed including the bio-based fresh feed material and an optional diluent to a hydrotreatment that includes a presence of a sulphided metal catalyst and hydrogen (H2), to provide a hydrotreated effluent, wherein the hydrotreatment feed includes 10-10 000 wt.-ppm of sulphur-containing (S-containing) compounds calculated as elemental S;
• (C) subjecting the hydrotreated effluent to gas-liquid separation so as to provide a gaseous hydrotreated material including H2, bio-propane, H2O, H2S, CO2, and CO, and a liquid hydrotreated material including paraffinic hydrocarbons;
• (D) subjecting the liquid hydrotreated material to fractionation, after an optional second hydrotreatment, and recovering at least diesel and/or a kerosene range paraffinic hydrocarbon material;
• (E) subjecting the gaseous hydrotreated material to a purification step for removing H2S and CO2 to obtain a H2S and CO2 depleted gaseous stream;
• (F) subjecting the H2S and CO2 depleted gaseous stream to H2 recovering and drying to obtain dried H2S, CO2 and H2 depleted gaseous stream;
• (G) fractionating and compressing the dried H2S, CO2 and H2 depleted gaseous stream to recover a liquefied bio-propane composition that contains at most 15 wt.-ppm of S-containing compounds, calculated as elemental S.