The project objectives were the optimisation of the production or improvement of the properties of biogenic middle distillates as well as the application-technical characterisation of the products and their mixtures with fuel oil EL. Especially the isomerised paraffinic components based on natural oils and fats have a high GHG reduction potential and can significantly reduce the "CO2 footprint" of heating oil EL or diesel fuel.
The hydrogenation of biogenic oils mainly leads to unbranched paraffins with very good combustion properties. Through isomerisation, the cold properties (cold filterability) can also be adapted to the requirements. In the project, conditions for a sufficient conversion with minimum gas formation could be shown; a joint conversion (separate hydrogenation and isomerisation) with petroleum-derived gas oil is possible. On the other hand, the hydrogenation/isomerisation of a vegetable oil in one reaction stage proved not to be expedient. Furthermore, the raw material basis was expanded by including further bio-oils (tall oil, frying and waste fats, pyrolysis oil).