US 2026/0109902 A1Published application

Process and installation for catalytically converting plastic materials into pyrolytic oils

AssigneeValoregen SAS

InventorsAmélie VALETTE, Thierry PEREZ

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Abstract

A process for converting plastic materials into pyrolytic oils, wherein: plastic materials are continuously fed into a preheating reactor to be mixed and preheated at a preheating temperature to obtain a pasty mixture; the pasty mixture is continuously transferred into a pyrolysis reactor to be heated at a pyrolysis temperature, under an anaerobic or inert atmosphere, to be converted into synthesis gases and a solid reaction product; the synthesis gases, containing condensable gases and uncondensable gases, are recovered on a first outlet located above the permeable bed, and the solid reaction product is recovered on a second outlet located below the permeable bed; the condensable gases of the synthesis gases are condensed into pyrolytic oils which are recovered.

Claims28

Dependent claims

A conversion process implementing degradation by pyrolysis of plastic materials for conversion into pyrolytic oils, said conversion process comprising at least the following phases:

the plastic materials are continuously fed into a preheating reactor in order to be mixed and preheated at a preheating temperature to fluidize them, and a catalyst is continuously fed into the preheating reactor to be mixed with the plastic materials and obtain a pasty mixture, the preheating temperature being lower than an activation temperature of the catalyst;
the pasty mixture is continuously transferred into a pyrolysis reactor to be heated at a pyrolysis temperature, higher than the preheating temperature and the activation temperature of the catalyst, under an anaerobic or inert atmosphere in order to be converted into synthesis gases and a solid reaction product containing at least chars, the pasty mixture descending by gravity inside the pyrolysis reactor and through a permeable bed which is heated at the pyrolysis temperature;
the synthesis gases, containing condensable gases and non-condensable gases, are recovered on a first outlet of the pyrolysis reactor located above the permeable bed, and the solid reaction product is recovered on a second outlet of the pyrolysis reactor located below the permeable bed;
the condensable gases of the synthesis gases are condensed into pyrolytic oils which are recovered.

1 more element

A conversion installation for degradation by pyrolysis of plastic materials for conversion into pyrolytic oils, said conversion installation comprising at least:

a continuous plastic material feed line;
a catalyst feed line;
a preheating reactor connected to the continuous plastic material feed line and to the catalyst feed line, said preheating reactor being configured to mix the plastic materials and preheat them at a preheating temperature in order to fluidize them, and to mix the plastic materials with the catalyst in order to obtain a pasty mixture, the preheating temperature being lower than an activation temperature of the catalyst;
a pyrolysis reactor arranged downstream of the preheating reactor and configured to heat the pasty mixture at a pyrolysis temperature, higher than the preheating temperature and the activation temperature of the catalyst, under an anaerobic or inert atmosphere in order to be converted into synthesis gases and a solid reaction product containing at least chars, the pyrolysis reactor internally incorporating a permeable bed, a first outlet located above the permeable bed and a second outlet located below the permeable bed;
a synthesis gas recovery line connected to the first outlet of the pyrolysis reactor (5), the synthesis gases containing condensable gases and non-condensable gases;
a solid reaction product recovery line connected to the second outlet of the pyrolysis reactor;
a condensation line arranged downstream of the synthesis gas recovery line and configured to condense the condensable gases of the synthesis gases into pyrolytic oils.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/115,410Filed 27 Sep 2023
Priority: FR FR22/0981828 Sep 2022
Published: 23 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

C10B 53/07
Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form: of solid raw materials…
C10G 1/10
Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal: from…
B01D 45/16
By centrifugal forces: generated by the winding course of the gas stream , the centrifugal forces being generated solely or partly by mechanical…
B01D 46/58
With multiple filtering elements, characterised by their mutual disposition: connected in parallel