Patent ID: 11891576
Assignee: KAT2BIZ AB
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  Y | IPC C

Claim 13:
14. A process for preparing a fuel, comprising the following steps:
providing bark containing a suberin component;
providing a solvent system comprising water, an alcohol, and a base selected from tertiary aliphatic amines;
treating the bark with the solvent system by subjecting the bark to the solvent system at a temperature of at least 160° C., thereby obtaining a composition containing at least partly dissolved substances of bark, of which substances the suberin component is at least partly depolymerized;
subjecting the composition resulting from the treatment step to filtration, so as to separate from the composition any solid bark residues;
separating by evaporation the solvent system from the filtrate obtained in the filtration step, so as to obtain a product mixture; and
hydrotreating the product mixture, thereby obtaining a fuel.