METHOD AND SYSTEM FOR FRACTIONATION OF LIGNOCELLULOSIC BIOMASS

摘要

Methods and systems for fractionating lignocellulosic biomass including hemicellulose, cellulose and lignin, including exploding the biomass cells to devolatilize the biomass, hydrolyzing the hemicellulose to produce a liquid component including hemicellulosic sugars and a solid component including less than 10% hemicellulose, separating the liquid and solid components, vaporizing the cellulose in the solid component, and condensing the cellulosic sugar vapors. The methods and systems may vaporize the cellulose in a continuous steam reactor at a temperature of about 400-550° C. and a pressure of about 1-3 bara. Electromagnetic and/or electroaccoustic treatment such as ultrasound and/or microwave treatment may be applied to the biomass immediately before or during cellulose hydrolysis.

主权项

1. A method of fractionating lignocellulosic biomass material comprising:
feeding the biomass into a devolatilization reactor to remove volatile components of the biomass; feeding the prepared biomass into a hemicellulose hydrolysis reactor to separate and hydrolyze hemicellulose; separating the biomass into a first solid component and a liquid component, wherein the liquid component includes hydrolyzed hemicellulose in water or solvent and wherein the solid component includes cellulose and lignin and has less than about 10% hemicellulose; feeding the solid component into a cellulose hydrolysis reactor comprising a continuous superheated steam reactor to hydrolyze and vaporize the cellulose component; and condensing the vaporized cellulose.