METHOD FOR PROCESSING LIGNOCELLULOSIC BIOMASS

The invention relates to a method for treating a lignocellulosic biomass， with: at. Pretreatment of the biomass by at least one cooking or steam explosion operation， in order to obtain a pretreated substrate， b. Liquid / solid separation on at least part of the pretreated substrate， comprising two successive substeps: - an upstream sub-step of contacting b1 of the solid / liquid mixture implemented by a continuous mixer (M) using a mixing fluid a downstream extraction / washing sub-step b2 implemented by a continuous filter， using a washing fluid， to obtain a solid phase enriched in solid and a plurality of liquid phases enriched in liquid， with at least recycling partial of a liquid phase extracted from the filter entering the mixer as a mixing fluid.本发明涉及一种木质纤维素生物质（lignocellulosic biomass）处理方法，具体步骤如下： a. 采用至少一道蒸煮或蒸汽爆破（steam explosion）工序对生物质进行预处理，以获得预处理底物； b. 对至少部分预处理底物开展液固分离（liquid/solid separation）操作，该分离涵盖两个连续子步骤： - 上游接触子步骤（b1）：通过编号为M的连续混合器（continuous mixer），以混合流体（mixing fluid）对固液混合物进行接触处理； - 下游萃取/洗涤子步骤（b2）：采用洗涤流体（washing fluid）通过连续过滤器（continuous filter）完成该工序，最终获得富含固体的固相（solid phase）以及多组富含液体的液相（liquid phase）； 且至少将从过滤器中提取的部分液相作为混合流体回送至上述连续混合器中。