Method for producing a pyrolysis oil with the following steps A) pyrolysis of a feedstock to be treated substantially in absence of oxygen in a pyrolysis zone, in which the feedstock is heated to a temperature of 250 °C to 700 °C, in particular, 300 °C to 600 °C, often, 400 to 500 °C, wherein the residence time of the material to be pyrolyzed in the pyrolysis zone is one second to one hour, in particular, 5 seconds to 30 minutes, for example, 3 minutes to 10 minutes, and pyrolyzed solids and pyrolysis vapors are formed, B) post-conditioning of at least the pyrolysis vapors in a post-conditioning zone, in which the pyrolysis vapors are brought into contact with a catalyst bed, wherein the catalyst comprises a pyrolyzed solid, obtainable according to process step A), or is made thereof, and wherein the post-conditioning is carried out at a temperature of 500 to 800 °C, in particular, 600 to 750 °C, and wherein the residence time of the pyrolysis vapors in the post-conditioning zone is 1 to 20 seconds and wherein the residence time of the catalyst in the post-conditioning zone is 10 minutes to 6 hours with the proviso that the temperature in the post-conditioning zone is higher that the temperature in the pyrolysis zone, and wherein the pyrolysis oil is formed, wherein in step B) the freshly formed pyrolyzed solids are continuously fed from the pyrolysis zone and wherein the catalyst bed is arranged in the post-conditioning zone in such a way that a cross sectional area of the post-conditioning zone arranged perpendicular to the direction of flow is essentially completely filled with the catalyst bed and wherein the volume flow of the pyrolysis vapors is passed through the catalyst bed in such a way that the pyrolysis vapors come into contact with a last supplied catalyst immediately at the start of step B); C) separation of the pyrolysis oil from other pyrolysis products that are formed in a separation unit. A) pyrolysis of a feedstock to be treated substantially in absence of oxygen in a pyrolysis zone, in which the feedstock is heated to a temperature of 250 °C to 700 °C, in particular, 300 °C to 600 °C, often, 400 to 500 °C, wherein the residence time of the material to be pyrolyzed in the pyrolysis zone is one second to one hour, in particular, 5 seconds to 30 minutes, for example, 3 minutes to 10 minutes, and pyrolyzed solids and pyrolysis vapors are formed, B) post-conditioning of at least the pyrolysis vapors in a post-conditioning zone, in which the pyrolysis vapors are brought into contact with a catalyst bed, wherein the catalyst comprises a pyrolyzed solid, obtainable according to process step A), or is made thereof, and wherein the post-conditioning is carried out at a temperature of 500 to 800 °C, in particular, 600 to 750 °C, and wherein the residence time of the pyrolysis vapors in the post-conditioning zone is 1 to 20 seconds and wherein the residence time of the catalyst in the post-conditioning zone is 10 minutes to 6 hours with the proviso that the temperature in the post-conditioning zone is higher that the temperature in the pyrolysis zone, and wherein the pyrolysis oil is formed, wherein in step B) the freshly formed pyrolyzed solids are continuously fed from the pyrolysis zone and wherein the catalyst bed is arranged in the post-conditioning zone in such a way that a cross sectional area of the post-conditioning zone arranged perpendicular to the direction of flow is essentially completely filled with the catalyst bed and wherein the volume flow of the pyrolysis vapors is passed through the catalyst bed in such a way that the pyrolysis vapors come into contact with a last supplied catalyst immediately at the start of step B); C) separation of the pyrolysis oil from other pyrolysis products that are formed in a separation unit. <EOS>