Methods and systems for processing a reaction product mixture of cellulosic biomass material

A system comprising:

• a digestion unit adapted to digest a cellulosic biomass material to generate a digested product;
• a separation zone adapted to separate the digested product into an overhead fraction and a bottom fraction, wherein the bottom fraction comprises (i) at least one compound having a separation point having a temperature in a range of about 100 to 600 degrees C. and a pressure of about atmospheric pressure and (ii) at least one volatile organic compound;
• and
• a recovery unit comprising:
• a heat exchange component adapted to transfer thermal energy between a thermal exchange fluid and the bottom fraction, wherein the heat exchange component is adapted to vaporize the at least one volatile organic compound in the bottom fraction to generate an overhead product;
• and
• a furnace component coupled to an outlet of the heat exchange component to receive the bottom fraction from the heat exchange component, wherein the furnace component is adapted to combust at least a portion of the bottom fraction to generate at least a portion of the thermal exchange fluid.