Process for upgrading a pyrolysis oil, in particular in a refinery
AssigneeTotal Raffinage Marketing
InventorAlexandre Preau
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for upgrading a pyrolysis oil comprising the following steps: —hydrodeoxygenation treatment (10) of the pyrolysis oil (12) and separation of the effluent (16) obtained into a light aqueous fraction (18) and a heavy organic fraction (20), or separation of the pyrolysis oil into an aqueous fraction and a lignin-rich fraction, —pre-reforming (22) of said aqueous fraction (18) and treatment of the effluent (26) obtained in an SMR unit (28) in order to produce hydrogen (34), —hydrotreatment (40) and/or catalytic cracking and/or visbreaking of said heavy organic fraction (20).
Claims9
A process for the upgrading of pyrolysis oil comprising the following stages:
- prereforming a light aqueous fraction obtained after a hydrodeoxygenation treatment of the pyrolysis oil, followed by separation of an effluent stream obtained therefrom into a light aqueous fraction and a heavy organic fraction, wherein the hydrodeoxygenation of the pyrolysis oil is carried out in two reactors in series, the first operating at a temperature of 120 to 180° C., and the second operating at a higher temperature of 300 to 400° C., wherein the prereforming is carried out at a temperature of 225 to 450° C., under a pressure of 1 to 30 bar;
- treating the prereformed aqueous fraction in an SMR unit in order to produce hydrogen;
- and
- hydrotreating and/or catalytic cracking and/or viscobreaking the heavy organic fraction.
Dependencies are inferred from the claim text.