HYDROTHERMAL-MECHANICAL CONVERSION OF LIGNOCELLULOSIC BIOMASS TO ETHANOL OR OTHER FERMENTATION PRODUCTS
    2.
    发明公开
    HYDROTHERMAL-MECHANICAL CONVERSION OF LIGNOCELLULOSIC BIOMASS TO ETHANOL OR OTHER FERMENTATION PRODUCTS 审中-公开
    木质纤维素生物质向乙醇或其他发酵产物的水热 - 机械转化

    公开(公告)号:EP3259360A1

    公开(公告)日:2017-12-27

    申请号:EP16753095.5

    申请日:2016-02-19

    IPC分类号: C12P7/10 C12P7/14 D21C5/02

    摘要: A low-cost process is provided to render lignocellulosic biomass accessible to cellulase enzymes, to produce fermentable sugars. Some variations provide a process to produce ethanol from lignocellulosic biomass (such as sugarcane bagasse or corn stover), comprising introducing a lignocellulosic biomass feedstock to a single-stage digestor; exposing the feedstock to a reaction solution comprising steam or liquid hot water within the digestor, to solubilize the hemicellulose in a liquid phase and to provide a cellulose-rich solid phase; refining the cellulose-rich solid phase, together with the liquid phase, in a mechanical refiner, thereby providing a mixture of refined cellulose-rich solids and the liquid phase; enzymatically hydrolyzing the mixture in a hydrolysis reactor with cellulase enzymes, to generate fermentable sugars; and fermenting the fermentable sugars to produce ethanol. Many alternative process configurations are described. The disclosed processes may be employed for other fermentation products.

    SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM
    8.
    发明公开
    SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM 审中-公开
    生产纳米纤维的亚硫酸盐工艺,以及由此生产的组合物和产品

    公开(公告)号:EP3089998A2

    公开(公告)日:2016-11-09

    申请号:EP14877397.1

    申请日:2014-12-30

    摘要: Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with low mechanical energy input. In some variations, the process includes fractionating biomass with sulfur dioxide or a sulfite compound and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The total mechanical energy may be less than 500 kilowatt-hours per ton. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers. These polymers may be combined with the nanocellulose to form completely renewable composites.

    摘要翻译: 所公开的工艺能够将生物质转化为具有低机械能输入的高结晶度纳米纤维素。 在一些变型中,该方法包括用二氧化硫或亚硫酸盐化合物和水分馏生物质以产生富含纤维素的固体和含有半纤维素和木质素的液体; 并机械处理富含纤维素的固体以形成纳米纤丝和/或纳米晶体。 总的机械能可能低于每千克500千瓦小时。 纳米纤维素材料的结晶度可以为80%或更高,转化为复合材料的良好增强性能。 纳米纤维素材料可以包括纳米纤维素纤维素,纳米晶体纤维素或两者。 在一些实施方案中,纳米纤维素材料通过将一些木质素沉积到纤维素表面上而是疏水的。 任选地,衍生自无定形纤维素和半纤维素的糖可以分开发酵,例如用于各种聚合物的单体。 这些聚合物可以与纳米纤维素结合以形成完全可再生的复合材料。

    PROCESSES FOR PRODUCING BIOMASS PELLETS AND SUGARS
    9.
    发明公开
    PROCESSES FOR PRODUCING BIOMASS PELLETS AND SUGARS 审中-公开
    用于生产生物质颗粒和糖

    公开(公告)号:EP3013970A1

    公开(公告)日:2016-05-04

    申请号:EP14816796.8

    申请日:2014-06-26

    摘要: In this disclosure, a process for producing biomass pellets and sugars from cellulosic biomass is provided, comprising: extracting the feedstock with steam and/or hot water and optionally with an acid catalyst, to produce cellulose-rich solids and an extract liquor containing hemicellulosic oligomers and lignin; separating the cellulose-rich solids from the extract liquor; filtering the extract liquor to remove at least some of the lignin, thereby generating a filter permeate comprising cleaned extract liquor containing the hemicellulosic oligomers and a filter retentate comprising a lignin-rich stream; hydrolyzing the hemicellulosic oligomers in the cleaned extract liquor with an acid or enzymes, to generate hemicellulosic monomers which are recovered; and pelletizing the cellulose-rich solids to form biomass pellets, wherein the pelletizing utilizes at least some of the lignin-rich stream as a binder or binder component.