Process for the production of biofuel from plant materials

Details Process for the production of biofuel from plant materials Process for the production of biofuel from plant materials

D - Textiles, Paper

21

C

D21C 3/20 (2006.01) C13K 1/02 (2006.01)

Patent

CA 2651628

An integrated process for the production of ethanol from woody plant material is provided, the process comprising: contacting a continuous flow of the plant material with a counter-current continuous flow of an aqueous ethanol solution at elevated temperature and pressure to provide plant material depleted of lignin; removing ethanol from the lignin-depleted plant material; contacting a continuous flow of the lignin-depleted plant material with water at elevated temperature and pressure to solubilize xylose within the plant material; and hydrolyzing cellulose present in the plant material to form glucose, which in turn is fermented to produce ethanol.

L'invention concerne un procédé intégré de fabrication d'éthanol à partir d'une matière végétale ligneuse, le procédé consistant à mettre en contact un flux continu de la matière végétale avec un flux continu à contre-courant d'une solution aqueuse d'éthanol à température et pression élevées pour obtenir une matière végétale appauvrie en lignine, retirer l'éthanol de la matière végétale appauvrie en lignine, mettre en contact un flux continu de la matière végétale appauvrie en lignine avec de l'eau à température et pression élevées pour solubiliser le xylose à l'intérieur de la matière végétale, et hydrolyser la cellulose présente dans la matière végétale pour former du glucose, qui est à son tour fermenté pour produire de l'éthanol.

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