Method for purifying hydrocarbon feedstock in the presence of a solvent and use thereof
AssigneeTotalenergies Onetech
InventorsThomas COUSTHAM, Christine LEGRAND, Hélène COULOMBEAU-LEROY
Life of this patent
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Abstract
Disclosed is a method for purifying a composition containing a plastic pyrolysis oil, which method comprises treating with a strong base in the presence of an alcohol. The method is useful for reducing the concentration of heteroelements in said composition with a view to making it compatible for introduction as feedstock in conversion methods such as steam cracking, fluid catalytic cracking, catalytic hydrogenation or hydrocracking.
Claims12
Method for reducing the concentration of heteroatoms of a composition comprising a plastic pyrolysis oil containing at least 20 ppm by mass of chlorine as measured in accordance with the standard ASTM D7359-18, comprising:
- (a) putting said composition in contact with 0.1-50% by mass a strong base comprising an alkali or alkali earth metal cation, in the presence of a polar solvent comprising an alcohol function and/or an ether function, for at least one minute at a temperature of no more than 450° C.,
- (b) separation between the strong base comprising the alkali or alkali earth metal cation and the product resulting from putting said composition in contact.
Dependencies are inferred from the claim text.