Patent ID: 11944955
Assignee: PETRÓLEO BRASILEIRO S.A.—PETROBRAS
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 17:
18. The pre-treatment method of acidic raw materials as defined in claim 13, wherein it is carried out at temperatures from 50 to 120° C. for bio-oil raw material and 50 to 150° C. for fatty acid raw material, pressures from 1 to 25 bar (0.1 to 2.5 MPa), reaction time from 2 to 6 hours, alcohol/fatty acid molar ratio between 2 and 10, alcohol/bio-oil molar ratio between 2 and 8, and percentage of catalyst in relation to raw materials from 1 to 8% m/m.