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US 2024/0117141 A1Published application
Process for hydrodepolymerization of polymeric waste material
AssigneeBasell Poliolefine Italia S.r.l.
InventorsShahram Mihan, Volker Fraaije
Life of this patent
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Abstract
A process for the hydrodepolymerization of polymeric waste material at a hydrogen pressure from 20 to 500 bar, with a hydrocracking catalyst made from or containing (a) a hydrogenating component made from or containing a metal selected from the group consisting of Fe, Mo, W, Ti, Ni, Cr, V, Co, Zr, and mixtures thereof, supported on an inorganic carrier, and (b) a depolymerizing component being an acidic compound.
Claims15
A process for the hydrodepolymerization of polymeric waste material, comprising the steps of:
- i) providing a feedstock of polymeric waste material;
- ii) mixing the feedstock of polymeric waste material with a hydrocracking catalyst comprising
- (a) a hydrogenating component comprising a metal selected from the group consisting of Fe, Mo, W, Ti, Ni, Cr, V, Co, Zr, and mixtures thereof, supported on an inorganic carrier and
- (b) a depolymerizing component being an acidic compound;
- iii) depolymerizing the mixture in the presence of hydrogen in a reactor at a hydrogen pressure from 20 to 500 bar, thereby yielding a reactor content made from or containing the hydrocracking catalyst, gaseous reaction products, and a hydrodepolymerization product;
- iv) separating the content of the reactor, thereby obtaining a liquid or liquefiable hydrodepolymerization product, the hydrocracking catalyst, or hydrogen-enriched gas fractions;
- v) optionally, re-introducing the hydrocracking catalyst or hydrogen-enriched gas fractions obtained in separation step iv) into the reactor;
- and
- vi) optionally, collecting the hydrogen-enriched gas fractions.
6 more elements
A process for producing olefins, comprising the steps of
- i) providing a feedstock of polymeric waste material;
- ii) mixing the feedstock of polymeric waste material with a hydrocracking catalyst comprising
- (a) a hydrogenating component comprising a metal selected from the group consisting of Fe, Mo, W, Ti, Ni, Cr, V, Co, Zr, and mixtures thereof, supported on an inorganic carrier and
- (b) a depolymerizing component being an acidic compound;
- iii) introducing the mixture into a reactor and treating the mixture with hydrogen;
- iv) separating the content of the reactor, thereby obtaining to obtain a liquid or liquefiable hydrodepolymerization product and gaseous fractions;
- v) optionally, collecting the gaseous fractions;
- and
- vi) introducing the hydrodepolymerization product into a steam cracker for forming a product comprising olefins.
6 more elements
Dependencies are inferred from the claim text.