Method for treating pyrolysis oils for recycling in a catalytic cracking unit or hydrorefining units

EP4638646A1Pending Publication Date: 2025-10-29IFP ENERGIES NOUVELLES
0 Cites 0 Cited by

Patent Information

Application Number
EP2023814213
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-12-21
Filing Date
2023-11-30
Publication Date
2025-10-29

AI Technical Summary

Technical Problem

Pyrolysis oils from plastics, tires, and solid recovered fuels contain high levels of halogenated compounds, which are incompatible with existing refinery units due to corrosion risks, requiring costly and energy-intensive hydrotreatment processes to achieve the necessary purity levels.

Method used

A mild hydrotreatment process at low pressure and moderate temperatures, combined with a separation step, effectively reduces halogenated compounds in pyrolysis oils, making them compatible with refinery units without complete purification, thus minimizing hydrogen consumption and operational costs.

Benefits of technology

The process significantly reduces halogenated compounds, particularly chlorine, while preserving diolefins and olefins, enabling the safe co-processing of pyrolysis oils with petroleum feeds in existing refinery units without the need for unit modifications, thereby reducing costs and energy usage.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a method for treating a feedstock comprising a pyrolysis oil from plastics and / or tyres and / or recovered solid fuels comprising halogenated compounds, said method comprising: a) a hydrotreatment step in order to obtain a partially hydrotreated effluent having a reduced content of halogenated compounds; b) a separation step which is supplied with the hydrotreated effluent from step a) and an aqueous solution in order to obtain a gaseous effluent, an aqueous effluent and a partially hydrotreated hydrocarbon effluent; c) a step of fluidized-bed catalytic cracking or hydrorefining of a petroleum feedstock and / or of a feedstock resulting from biomass conversion, wherein the partially hydrotreated hydrocarbon effluent is introduced as a co-feedstock without undergoing another hydrotreatment step carried out at a higher temperature and / or pressure beforehand, the mixture of petroleum and / or biomass feedstock and the partially hydrotreated hydrocarbon effluent having a content of halogenated compounds of less than or equal to 10 ppm by weight.
Need to check novelty before this filing date? Find Prior Art