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AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsAndreas Hornung, Andreas Apfelbacher, Miloud Ouadi, Johannes Neumann
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A method for producing a pyrolysis oil is described. In said method, a feedstock to be treated is first pyrolyzed in a pyrolysis zone, in which the feedstock is heated to a temperature of 250 degrees Celsius to 700 degrees Celsius; and pyrolyzed solids and pyrolysis vapors are formed. The pyrolysis vapors are then reformed at a temperature of 450 degrees Celsius to 1,200 degrees Celsius in a post-conditioning zone, in which the pyrolysis vapors are brought into contact with a catalyst bed, wherein the pyrolysis oil is formed. In this case, the catalyst comprises a pyrolyzed solid, which can be obtained according to the pyrolysis, described above. Finally the pyrolysis oil is separated from the additional pyrolysis products, which are formed, in a separation unit.
A pyrolysis oil comprising a carbon content greater than 65% by wt., a hydrogen content greater than 5% by wt. and an oxygen content from 3% and up to 9% by wt., a 14C content of no less than 0.1 parts per trillion, and an ash content.
A pyrolysis oil comprising a carbon content greater than 65% by wt., a hydrogen content greater than 5% by wt. and an oxygen content from 3% and up to 9% by wt., a 14C content of no less than 0.1 parts per trillion, wherein the pyrolysis oil is distillable without decomposition by means of vacuum distillation at 100 hPa (abs) and has a calorific value in accordance with DIN EN 14918 of greater than 30 MJ/kg.
A pyrolysis oil comprising a carbon content greater than 65% by wt., a hydrogen content from 6 to 11% by wt. and an oxygen content from 3% and up to 9% by wt., a 14C content of no less than 0.1 parts per trillion and an acid value of less than 15 mg of KOH/g.
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