Cellulose pretreatment process
    1.
    发明授权
    Cellulose pretreatment process 有权
    纤维素预处理工艺

    公开(公告)号:US08287651B2

    公开(公告)日:2012-10-16

    申请号:US12560843

    申请日:2009-09-16

    IPC分类号: C13K1/02

    摘要: A process for the production of ethanol from biomass is disclosed. The process relates to the pretreatment of corncob biomass and includes the steps of exposing corncob to steam in a reaction vessel at an elevated temperature and reaction pressure for a preselected exposure time. Volatile compounds are continuously vented during pretreatment. The reaction pressure is released for explosive decomposition of the corncob biomass into fibrous solids and condensate. The exposure is preferably carried out at a temperature of 190-210° C. and a pressure of 190 psig to 275 psig and an exposure time of 3 to 10 minutes.

    摘要翻译: 公开了一种从生物质生产乙醇的方法。 该方法涉及玉米芯生物质的预处理,包括以下步骤:将玉米芯在高温和反应压力下在反应容器中暴露于蒸汽中以进行预选的曝光时间。 挥发性化合物在预处理过程中持续排出。 释放反应压力以将玉米芯生物质炸药分解成纤维状固体和冷凝物。 曝光优选在190-210℃的温度和190psig至275psig的压力和3至10分钟的曝光时间下进行。

    Removal of inhibitory compounds during pre-treatment of lignocellulosic biomass
    2.
    发明授权
    Removal of inhibitory compounds during pre-treatment of lignocellulosic biomass 有权
    在木质纤维素生物质的预处理过程中去除抑制性化合物

    公开(公告)号:US08394235B2

    公开(公告)日:2013-03-12

    申请号:US12688342

    申请日:2010-01-15

    IPC分类号: D21C1/02 D21C1/04

    摘要: A process for the pretreatment of lignocellulosic biomass, in particular during the production of ethanol from biomass. The process including a cooking step where the biomass is exposed to steam at elevated temperatures and pressures for a preselected period of time in a treatment vessel. During the process, volatile and liquid compounds are purged from the treatment vessel.

    摘要翻译: 一种用于预处理木质纤维素生物质的方法,特别是在从生物质生产乙醇期间。 该方法包括烹饪步骤,其中生物质在升高的温度和压力下暴露于处理容器中预选的时间段内的蒸汽。 在此过程中,挥发性和液体化合物从处理容器中清除。

    Continuous process for the production of ethanol from lignocellulosic biomass
    3.
    发明授权
    Continuous process for the production of ethanol from lignocellulosic biomass 有权
    从木质纤维素生物质生产乙醇的连续工艺

    公开(公告)号:US09434961B2

    公开(公告)日:2016-09-06

    申请号:US13291659

    申请日:2011-11-08

    IPC分类号: C12P7/10

    CPC分类号: C12P7/10 Y02E50/16

    摘要: A continuous process for the recovery of ethanol from hemicellulose and cellulose from lignocellulosic biomass. Yield of fermentable sugars can be maximized by continuous operation of the pre-treatment system and careful selection of pretreatment conditions including the addition of only small amounts of dilute mineral acid and low pressure. With this approach, the xylose component that is mainly present in its unfermentable oligomeric form in known pre-hydrolysis Kraft processes can be recovered more efficiently and as a monomer that can be fermented by xylose fermenting yeasts and bacteria. Due to the use of only dilute acids, there is a very low loss of glucose and xylose hence very low production of toxic chemicals (e.g. HMF, furfural) in the pretreatment step. The resulting overall fermentation efficiency of both hexose and pentose sugars is 90% of the theoretical maximum.

    摘要翻译: 从木质纤维素生物质从半纤维素和纤维素回收乙醇的连续方法。 可以通过预处理系统的连续操作和仔细选择预处理条件(包括仅添加少量稀无机酸和低压)来最大化可发酵糖的产率。 通过这种方法,在已知的预水解牛皮纸方法中主要以不可发酵的低聚形式存在的木糖组分可以更有效地回收,并且可以作为可通过木糖发酵酵母和细菌发酵的单体。 由于仅使用稀酸,葡萄糖和木糖的损失非常低,因此在预处理步骤中有毒化学品(例如HMF,糠醛)的产生非常低。 所得到的己糖和戊糖的总发酵效率为理论最大值的90%。

    Solid and liquid separation process
    4.
    发明授权
    Solid and liquid separation process 有权
    固液分离工艺

    公开(公告)号:US09254449B2

    公开(公告)日:2016-02-09

    申请号:US13554557

    申请日:2012-07-20

    摘要: A process for separation of solid and liquid components in a distillation whole stillage utilizing airless spray drying is disclosed, which is more efficient and economical than conventional processes. In the process, distillation whole stillage resulting from distillation of fermented biomass is first subjected to an evaporation step for separating the whole stillage into a condensate and a concentrate including water, dissolved solids and suspended solids. The concentrate is then subjected to airless steam spray drying for converting the concentrate into dried solids, steam and vapors. All steam and vapors resulting from the airless steam spray drying step are then redirected as energy source to a processing step upstream of the airless spray drying step. At least some of the steam generated in the airless spray drying step is airless steam.

    摘要翻译: 公开了一种利用无空气喷雾干燥在蒸馏整体釜中分离固体和液体组分的方法,其比常规方法更有效和经济。 在此过程中,首先对发酵生物质蒸馏产生的蒸馏整体釜渣进行蒸发步骤,将整个釜馏塔分离成冷凝物和包含水,溶解固体和悬浮固体的浓缩物。 然后将浓缩物进行无空气蒸汽喷雾干燥,以将浓缩物转化为干固体,蒸汽和蒸气。 然后将由无空气蒸汽喷雾干燥步骤产生的所有蒸汽和蒸气作为能源重新定向到无气喷涂干燥步骤上游的处理步骤。 在无空气喷雾干燥步骤中产生的至少一些蒸汽是无空气蒸汽。

    Deicing formulation utilizing co-products from lignocellulose to bio fuel process
    6.
    发明授权
    Deicing formulation utilizing co-products from lignocellulose to bio fuel process 有权
    使用从木质纤维素到生物燃料过程的副产物的除冰配方

    公开(公告)号:US08852450B2

    公开(公告)日:2014-10-07

    申请号:US13822413

    申请日:2011-09-13

    IPC分类号: C09K3/18 C13K1/02 C09K5/10

    摘要: The use of a side stream and residue from the lignocellulose to ethanol process for use in preventing the formation of ice and in melting ice and snow on roadways. The future lignocellulose to ethanol industry will provide a significant proportion of these streams that provide an organic solution that when added to chloride salts of calcium, magnesium and sodium provides an improved environmentally friendly road deicing product with reduced corrosiveness and increased friction. A deicer composition of calcium chloride aqueous solution containing 25-38% by weight calcium chloride mixed up to 50% by volume of hemicellulose hydrolysis side stream can reduce the corrosivity of calcium chloride to 70% less that of a sodium chloride solution.

    摘要翻译: 使用侧流和来自木质纤维素的残余物用于乙醇方法,用于防止冰的形成和在道路上融化冰雪。 未来的木质纤维素向乙醇工业将提供相当大比例的这些物流,提供有机溶液,当添加到钙,镁和钠的氯化物盐中时,提供了一种改进的环保道路除冰产品,具有降低的腐蚀性和增加的摩擦力。 含有25-38%(重量)氯化钙的除冰剂组合物,混合高达50%(体积)的半纤维素水解侧流,可将氯化钙的腐蚀性降低到氯化钠溶液的70%以下。

    DE ICING FORMULATION UTILIZING CO-PRODUCTS FROM LIGNOCELLULOSE TO BIO FUEL PROCESS
    7.
    发明申请
    DE ICING FORMULATION UTILIZING CO-PRODUCTS FROM LIGNOCELLULOSE TO BIO FUEL PROCESS 有权
    将产品从木糖醇利用于生物燃料工艺的制剂配方

    公开(公告)号:US20130175467A1

    公开(公告)日:2013-07-11

    申请号:US13822413

    申请日:2011-09-13

    IPC分类号: C09K5/10

    摘要: The use of a side stream and residue from the lignocellulose to ethanol process for use in preventing the formation of ice and in melting ice and snow on roadways. The future lignocellulose to ethanol industry will provide a significant proportion of these streams that provide an organic solution that when added to chloride salts of calcium, magnesium and sodium provides an improved environmentally friendly road deicing product with reduced corrosiveness and increased friction. A deicer composition of calcium chloride aqueous solution containing 25-38% by weight calcium chloride mixed up to 50% by volume of hemicellulose hydrolysis side stream can reduce the corrosivity of calcium chloride to 70% less that of a sodium chloride solution.

    摘要翻译: 使用侧流和来自木质纤维素的残余物用于乙醇方法,用于防止冰的形成和在道路上融化冰雪。 未来的木质纤维素向乙醇工业将提供相当大比例的这些物流,提供有机溶液,当添加到钙,镁和钠的氯化物盐中时,提供了一种改进的环保道路除冰产品,具有降低的腐蚀性和增加的摩擦力。 含有25-38%(重量)氯化钙的除冰剂组合物,混合高达50%(体积)的半纤维素水解侧流,可将氯化钙的腐蚀性降低到氯化钠溶液的70%以下。