Pyrolysis oil treatment process including a hydrotreating-hydrocracking sequence followed by a hot separation

Abstract

Process for the treatment of a feedstock comprising an oil from the pyrolysis of plastics and / or of tyres and / or of solid recovered fuels, comprising: b) a hydrogenation of said feedstock and a part of the liquid effluent resulting from the separation stage e1) in order to obtain a hydrogenated effluent, c) a hydrotreating of said hydrogenated effluent in order to obtain a hydrotreated effluent, d) a hydrocracking of said hydrotreated effluent in order to obtain a hydrocracked effluent, e1) a separation of the hydrocracked effluent carried out at high temperature and high pressure in order to obtain a gaseous effluent and a liquid effluent, a part of which is recycled upstream of stage b), e2) a separation / washing stage carried out at low temperature and high pressure fed with the gaseous effluent and optionally the other part of the liquid effluent resulting from stage e1) and an aqueous solution, in order to obtain a hydrocarbon effluent freed of its impurities.

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