Process of degradation of waste plastic polymeric material mixture and relating plant
AssigneePolitecnico Di Milano
InventorFlavio Manenti
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Abstract
Degradation process of mixtures of waste plastic polymeric material containing halogenated polymers comprising the steps of: a) melting said plastic material at T>200° C. and ≤220° C.; b) dehalogenating the molten mixture by production of gaseous halogenidric acid from the previous step (a) at T between 300 and 410° C., preferably between 320 and 380° C.: c) degrading the dehalogenated mixture from step (b) at a temperature between 410° C. and 500° C. and with retention times >5 minutes and ≤20 minutes, wherein the reaction products mainly comprise low boiling hydrocarbons, and in lesser extent hydrogen, naphtha, gasoline, jet fuel, diesel, heavy oils, residues.
Claims25
A degradation process of mixtures of waste plastic polymeric material containing halogenated polymers comprising the steps of:
- a) melting said plastic material at T>200° C. and ≤220° C.;
- b) dehalogenating the molten mixture by production of gaseous halogenidric acid from the previous T stage between 320 and 380° C.;
- and
- c) degrading the dehalogenated mixture from step (b) at a temperature between 410° C. and 500° C. and with retention times >5 minutes and ≤20 minutes, wherein the reaction products mainly comprise low boiling hydrocarbons, and in lesser extent hydrogen, naphtha, gasoline, jet fuel, diesel, heavy oils, residues.
Dependencies are inferred from the claim text.