Pretreatment process for conversion of cellulose to fuel ethanol
    1.
    发明授权
    Pretreatment process for conversion of cellulose to fuel ethanol 有权
    将纤维素转化为燃料乙醇的预处理工艺

    公开(公告)号:US6090595A

    公开(公告)日:2000-07-18

    申请号:US207468

    申请日:1998-12-08

    CPC分类号: C12P7/10 Y02E50/16

    摘要: An improved pretreatment of cellulosic feedstocks, to enable economical ethanol production by enzyme treatment. The improved pretreatment comprises choosing either a feedstock with a ratio of arabinoxylan to total nonstarch polysaccharides (AX/NSP) of greater than about 0.39, or a selectively bred feedstock on the basis of an increased ratio of AX/NSP over a starting feedstock material, and reacting at conditions that disrupt the fiber structure and hydrolyze a portion of the cellulose and hemicellulose. This pretreatment produces a superior substrate for enzymatic hydrolysis, by enabling the production of more glucose with less cellulose enzyme than any known procedures. This pretreatment is uniquely suited to ethanol production. Preferred feedstocks with an AX/NSP level greater than about 0.39 include varieties of oat hulls and corn cobs.

    摘要翻译: 改进纤维素原料的预处理,以通过酶处理实现经济的乙醇生产。 改进的预处理包括选择具有大于约0.39的阿拉伯木聚糖与总非淀粉多糖(AX / NSP)的比例的原料或基于增加的起始原料材料的AX / NSP比例的选择性培育的原料, 并在破坏纤维结构并水解一部分纤维素和半纤维素的条件下进行反应。 该预处理通过使得能够以比任何已知方法更少的纤维素酶产生更多的葡萄糖来产生用于酶水解的优异底物。 这种预处理特别适用于乙醇生产。 AX / NSP水平大于约0.39的优选原料包括燕麦壳和玉米芯的品种。

    METHOD FOR LOW WATER HYDROLYSIS OR PRETREATMENT OF POLYSACCHARIDES IN A LIGNOCELLULOSIC FEEDSTOCK
    2.
    发明申请
    METHOD FOR LOW WATER HYDROLYSIS OR PRETREATMENT OF POLYSACCHARIDES IN A LIGNOCELLULOSIC FEEDSTOCK 有权
    低密度脂蛋白水解水解或预处理多糖的方法

    公开(公告)号:US20100056774A1

    公开(公告)日:2010-03-04

    申请号:US12548718

    申请日:2009-08-27

    IPC分类号: C08B37/00 B01J19/00 B01D21/00

    摘要: A method is provided for hydrolyzing polysaccharides in a lignocellulosic feedstock to produce monosaccharides or pretreating a lignocellulosic feedstock, in which an aqueous slurry of the lignocellulosic feedstock is fed into a pressurized dewatering zone wherein the feedstock is partially dewatered and then is compressed into a plug. The plug is introduced into a reaction zone that operates at a pressure (Pr) equal to greater than about 90 psia and under suitable temperature and pH conditions to hydrolyze the polysaccharides or pretreat the feedstock. The plug provides a pressure seal between the outlet of the dewatering zone and the reaction zone. The pressure (Pdwi) of the aqueous slurry of the lignocellulosic feedstock at the inlet of the dewatering device is related to Pr as follows: 0≦ΔP

    摘要翻译: 提供了一种用于在木质纤维素原料中水解多糖以产生单糖或预处理木质纤维素原料的方法,其中将木质纤维素原料的含水浆料进料到加压脱水区,其中原料被部分脱水,然后被压缩成塞子。 将塞子引入反应区,其在等于大约90psia的压力(Pr)下操作,并在合适的温度和pH条件下水解多糖或预处理原料。 塞子在脱水区的出口和反应区之间提供压力密封。 在脱水装置入口处的木质纤维素原料的水浆料的压力(Pdwi)与Pr有关,如下:0&nlE;&Dgr; P <[(Pr-20psia)和220psia]中的较小者,其中 &Dgr; P是Pr和Pdwi在psia中的绝对压力差。

    METHOD AND SYSTEM FOR THE LARGE SCALE COLLECTION, PREPARATION, HANDLING AND REFINING OF LIGNO-CELLULOSIC BIOMASS
    3.
    发明申请
    METHOD AND SYSTEM FOR THE LARGE SCALE COLLECTION, PREPARATION, HANDLING AND REFINING OF LIGNO-CELLULOSIC BIOMASS 有权
    大规模收集,制备,处理和精制大细胞生物量的方法和系统

    公开(公告)号:US20080038815A1

    公开(公告)日:2008-02-14

    申请号:US11769850

    申请日:2007-06-28

    摘要: A system for collecting ligno-cellulosic biomass over a large area to enable the commercial refining of biomass from 2,500 to in excess of 50,000 tons of biomass per day to produce ethanol or other products. The biomass is collected at a series of collection points and then transported through a network of conduit “loops” interconnecting each of the collection points and the central refining plant. The water used to transport the biomass, as a slurry, is recovered and sequentially recycled in the same pipeline system to push the biomass slurry around the system in a “loop”.

    摘要翻译: 用于在大面积上收集木质纤维素生物质的系统,以使得生物质能够每天从2500升到超过5万吨的生物质的商业精制来生产乙醇或其它产物。 生物质在一系列收集点收集,然后通过连接每个收集点和中央精炼设备的导管“环”网络传送。 用于运输生物质的水作为浆料被回收并在相同的管道系统中顺序再循环,以将生物质浆料以“循环”的方式推向系统周围。

    METHOD AND SYSTEM FOR THE LARGE SCALE COLLECTION, PREPARATION, HANDLING AND REFINING OF LIGNO-CELLULOSIC BIOMASS
    4.
    发明申请
    METHOD AND SYSTEM FOR THE LARGE SCALE COLLECTION, PREPARATION, HANDLING AND REFINING OF LIGNO-CELLULOSIC BIOMASS 审中-公开
    大规模收集,制备,处理和精制大细胞生物量的方法和系统

    公开(公告)号:US20120023814A1

    公开(公告)日:2012-02-02

    申请号:US13252501

    申请日:2011-10-04

    IPC分类号: C10L5/00

    摘要: A system for collecting ligno-cellulosic biomass over a large area to enable the commercial refining of biomass from 2,500 to in excess of 50,000 tons of biomass per day to produce ethanol or other products. The biomass is collected at a series of collection points and then transported through a network of conduit “loops” interconnecting each of the collection points and the central refining plant. The water used to transport the biomass, as a slurry, is recovered and sequentially recycled in the same pipeline system to push the biomass slurry around the system in a “loop”.

    摘要翻译: 用于在大面积上收集木质纤维素生物质的系统,以使得生物质能够每天从2500升到超过5万吨的生物质的商业精制来生产乙醇或其它产物。 生物质在一系列收集点收集,然后通过连接每个收集点和中央精炼设备的导管“环”网络传送。 用于运输生物质的水作为浆料被回收并在相同的管道系统中顺序再循环,以将生物质浆料以“循环”的方式推向系统周围。

    Method for low water hydrolysis or pretreatment of polysaccharides in a lignocellulosic feedstock
    5.
    发明授权
    Method for low water hydrolysis or pretreatment of polysaccharides in a lignocellulosic feedstock 有权
    在木质纤维素原料中低水解或预处理多糖的方法

    公开(公告)号:US08328947B2

    公开(公告)日:2012-12-11

    申请号:US12548718

    申请日:2009-08-27

    IPC分类号: C08B37/00

    摘要: A method is provided for hydrolyzing polysaccharides in a lignocellulosic feedstock to produce monosaccharides or pretreating a lignocellulosic feedstock, in which an aqueous slurry of the lignocellulosic feedstock is fed into a pressurized dewatering zone wherein the feedstock is partially dewatered and then is compressed into a plug. The plug is introduced into a reaction zone that operates at a pressure (Pr) equal to greater than about 90 psia and under suitable temperature and pH conditions to hydrolyze the polysaccharides or pretreat the feedstock. The plug provides a pressure seal between the outlet of the dewatering zone and the reaction zone. The pressure (Pdwi) of the aqueous slurry of the lignocellulosic feedstock at the inlet of the dewatering device is related to Pr as follows: 0≦ΔP

    摘要翻译: 提供了一种用于在木质纤维素原料中水解多糖以产生单糖或预处理木质纤维素原料的方法,其中将木质纤维素原料的含水浆料进料到加压脱水区,其中原料被部分脱水,然后被压缩成塞子。 将塞子引入反应区,其在等于大约90psia的压力(Pr)下操作,并在合适的温度和pH条件下水解多糖或预处理原料。 塞子在脱水区的出口和反应区之间提供压力密封。 在脱水装置入口处的木质纤维素原料的水浆料的压力(Pdwi)与Pr有关,如下:0&nlE;&Dgr; P <[(Pr-20psia)和220psia]中的较小者,其中 &Dgr; P是Pr和Pdwi在psia中的绝对压力差。

    Method and system for the large scale collection, preparation, handling and refining of ligno-cellulosic biomass
    6.
    发明授权
    Method and system for the large scale collection, preparation, handling and refining of ligno-cellulosic biomass 有权
    木质纤维素生物质的大规模收集,制备,处理和精制的方法和系统

    公开(公告)号:US08057635B2

    公开(公告)日:2011-11-15

    申请号:US11769850

    申请日:2007-06-28

    IPC分类号: D21C5/02

    摘要: A system for collecting ligno-cellulosic biomass over a large area to enable the commercial refining of biomass from 2,500 to in excess of 50,000 tons of biomass per day to produce ethanol or other products. The biomass is collected at a series of collection points and then transported through a network of conduit “loops” interconnecting each of the collection points and the central refining plant. The water used to transport the biomass, as a slurry, is recovered and sequentially recycled in the same pipeline system to push the biomass slurry around the system in a “loop”.

    摘要翻译: 用于在大面积上收集木质纤维素生物质的系统,以使得生物质能够每天从2500升到超过5万吨的生物质的商业精制来生产乙醇或其它产物。 生物质在一系列收集点收集,然后通过连接每个收集点和中央精炼设备的导管“环”网络传送。 用于运输生物质的水作为浆料被回收并在相同的管道系统中顺序再循环,以将生物质浆料以“循环”的方式推向系统周围。