LOW METAL CONTENT BIOMASS-DERIVED PYROLYSIS OIL AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2013 - IPC C10G25/02 C10L1/02 C07C7/12 

FIELD: chemistry.

SUBSTANCE: invention relates to biofuels and methods for production thereof. The method (10) of producing low metal content biomass-derived pyrolysis oil comprises the following steps: contacting the metal-containing biomass-derived pyrolysis oil with an acidic ion-exchange resin having sulphonic acid active groups to obtain low metal content biomass-derived pyrolysis oil and spent acidic ion-exchange resin (14); removing the obtained low metal content biomass-derived pyrolysis oil from the spent acidic ion-exchange resin (16); and washing the spent acidic ion-exchange resin with a solvent selected from a group consisting of methanol, ethanol, acetone and combinations thereof to remove at least a portion of residual low metal content biomass-derived pyrolysis oil from the spent acidic ion-exchange resin and to retain residual solvent in the low metal content biomass-derived pyrolysis oil. Disclosed also is a method (10) of reducing metal content in the obtained metal-containing biomass-derived pyrolysis oil.

EFFECT: total concentration of metals is reduced from the level of the starting pyrolysis oil, wherein other properties such as viscosity, water content and acidity basically remain unchanged after ion exchange.

10 cl, 4 dwg