Purification of recycled and renewable organic material

A method of purifying a recycled or renewable organic material, wherein the recycled or renewable organic material contains at least impurities of silicon compounds and phosphorous compounds, the method comprising:

• (a) providing the recycled or renewable organic material;
• (b) optionally pre heat treating the recycled or renewable organic material at 180 to 325° C., and optionally adding acid before or after the pre heat treatment process, and optionally filtering the pre heat treated recycled or renewable organic material after the pre heat treatment;
• (c) heat treating the recycled or renewable organic material at 100 to 450° C. at a pressure from 500 to 5000 kPa, optionally in a presence of an adsorbent, optionally adding water before or during the heat treatment process, and optionally adding acid before or after the heat treatment process, and optionally filtering the heat treated recycled or renewable organic material after the heat treatment;
• (d) optionally evaporating volatile silicon compounds from the heat treated recycled or renewable organic material compounds thereby reducing the silicon content of the heat treated recycled or renewable organic material;
• (e) optionally thermally cracking the recycled or renewable organic material thereby reducing oxygen and phosphorous content of the heat treated recycled or renewable organic material, and optionally removing volatiles from the thermally cracked recycled or renewable organic material, and optionally removing solids/precipitates from the recycled or renewable organic material;
• and
• (f) hydrotreating the heat treated recycled or renewable organic material in a presence of a hydrotreating catalyst and hydrogen flow;
• to obtain a purified hydrotreated recycled or renewable organic material, which contains less than 30% of an original phosphorous content of the recycled or renewable organic material provided in step (a),
• wherein in step (c) the recycled or renewable organic material is heated to cause thermal reactions that disrupt the structure of the impurity containing compounds comprised in the recycled or renewable organic material thus forming material that adsorbs into the adsorbent present in the heating step (c) or material that forms solid precipitates and that can thus be subsequently removed from the recycled or renewable organic material.