SYSTEM AND PROCESS FOR REFINING LIGNOCELLULOSIC BIOMASS MATERIAL

A system(1) for refining lignocellulosic biomass material(A) comprising a presteaming bin(2)， a dewatering device (3)， apreheater (4)， a defibrator (9) comprising at least one refining zone (14) wherein steam is generated during refining of said biomass material so that a pressure peak occurs， a blowpipe(19)，anda first steam flow path (D) arranged to convey steam from said refining zone to said presteaming bin(2). The system further comprises a second steam flow path(E)arranged to convey steam from said refining zone to said presteaming bin， wherein said first and second steam flow paths are connected to the refining zone on opposite sides of the pressure peakin a biomass material transport direction， and wherein said first and second steam flow paths are separate from said blow pipe.The invention also relates to a process for refining lignocellulosic biomass material.

一种用于精制木质纤维素生物质材料（lignocellulosic biomass material）的系统(1)，其包含预蒸仓（presteaming bin）(2)、脱水装置（dewatering device）(3)、预热器（preheater）(4)以及纤维分离机（defibrator）(9)；所述纤维分离机设有至少一个精制区（refining zone）(14)，在对所述生物质材料进行精制的过程中，该精制区内会产生蒸汽并形成压力峰值。该系统还包括喷放管（blowpipe）(19)，以及用于将蒸汽从所述精制区输送至预蒸仓(2)的第一蒸汽流路（steam flow path）(D)。此外，本系统还设有第二蒸汽流路（steam flow path）(E)，用于将蒸汽从所述精制区输送至预蒸仓；其中，第一蒸汽流路与第二蒸汽流路在生物质材料的输送方向上分别位于压力峰值的两侧，且二者均与所述喷放管相互独立。本发明还涉及一种精制木质纤维素生物质材料的工艺方法。