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公开(公告)号：US20130071903A1
公开(公告)日：2013-03-21
申请号：US13623207
申请日：2012-09-20
CPC分类号： C13K1/02 , C08H8/00 , C08L97/02 , C12P7/10 , C12P19/02 , C12P2201/00 , C13K13/002 , C13K13/007 , D21C1/02 , Y02E50/16
摘要： The present invention provides a method for producing a pretreated or hydrolyzed lignocellulosic feedstock. The method comprises feeding a lignocellulosic feedstock to a plug formation device and forming a feedstock plug therein. The plug or segments thereof are fed into an elongate chamber that comprises steam addition means for direct steam addition and a rotating shaft mounted co-axially within the chamber having one or more disintegrating elements mounted on it. Disintegrated feedstock particles are produced in the elongate chamber by the disintegrating elements. The disintegrated feedstock particles are heated by contact with the steam introduced through the steam addition means. The disintegrated feedstock particles are then treated in a reactor to produce the pretreated or hydrolyzed lignocellulosic feedstock. Further provided is a feedstock composition comprising disintegrated feedstock particles. Also provided are methods for reducing erosion on equipment by maintaining the discharge consistency from the plug formation device below 35 wt %.
摘要翻译： 本发明提供了一种用于生产预处理或水解的木质纤维素原料的方法。 该方法包括将木质纤维素原料进料到塞子形成装置中并在其中形成原料塞。 插塞或其部分进料到细长的室中，其包括用于直接蒸汽添加的蒸汽添加装置和同轴地安装在室内的旋转轴，其具有安装在其上的一个或多个分解元件。 崩解原料颗粒在细长室中由分解元素产生。 通过与通过蒸汽添加装置引入的蒸汽接触来加热分解的原料颗粒。 然后将崩解的原料颗粒在反应器中处理以产生预处理或水解的木质纤维素原料。 还提供了包含分解原料颗粒的原料组合物。 还提供了通过将塞子形成装置的排出稠度保持在35重量％以下来减少设备侵蚀的方法。
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公开(公告)号：US10179971B2
公开(公告)日：2019-01-15
申请号：US15127693
申请日：2015-03-20
IPC分类号： C12P7/10 , C12P7/14 , C12P7/16 , D21C1/10 , C12P19/14 , D21C1/04 , D21C5/00 , C12P19/02 , C13K1/02 , D21C1/00
摘要： Provided herein is a process for producing an alcohol from a sugar cane derived cellulosic feedstock comprising: subjecting the sugar cane derived cellulosic feedstock comprising bagasse, leaves, tops, or any combination thereof, to silica removal selected from processes comprising sieving, screening, washing, cyclone separation or any combination thereof. The bagasse, leaves or tops, or any combination thereof, from which at least a portion of the silica has been removed is treated in one or more processing stages to produce sugar, wherein the undissolved solids content of a slurry during said processing stages reaches a weight percent of at least 15%. Thereafter the sugar is fermented with yeast or bacteria to produce the alcohol and the alcohol is concentrated and recovered.
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公开(公告)号：US10563239B2
公开(公告)日：2020-02-18
申请号：US15538850
申请日：2015-12-22
摘要： Provided herein is a process for hydrolyzing a cellulosic feedstock to produce sugar. The process comprises introducing a pretreated cellulosic slurry to an inlet region of a plug flow hydrolysis reactor using a slurry introduction device that reduces the axial momentum of the slurry at the surface of the reactor contents. The cellulosic feedstock slurry is hydrolyzed in the plug flow hydrolysis reactor by contacting the cellulosic feedstock with at least cellulase enzymes to produce glucose. Also provided herein is a vertically-oriented, unmixed downflow hydrolysis reactor for hydrolyzing a pretreated cellulosic feedstock slurry which comprises such a slurry introduction device disposed in a top region thereof.
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公开(公告)号：US20170349923A1
公开(公告)日：2017-12-07
申请号：US15538850
申请日：2015-12-22
CPC分类号： C12P19/14 , C12M21/12 , C12M21/18 , C12M27/02 , C12M45/09 , C12P7/10 , C12P7/14 , C12P19/02 , C12Y302/01004 , C12Y302/01021 , Y02E50/16
摘要： Provided herein is a process for hydrolyzing a cellulosic feedstock to produce sugar. The process comprises introducing a pretreated cellulosic slurry to an inlet region of a plug flow hydrolysis reactor using a slurry introduction device that reduces the axial momentum of the slurry at the surface of the reactor contents. The cellulosic feedstock slurry is hydrolyzed in the plug flow hydrolysis reactor by contacting the cellulosic feedstock with at least cellulase enzymes to produce glucose. Also provided herein is a vertically-oriented, unmixed downflow hydrolysis reactor for hydrolyzing a pretreated cellulosic feedstock slurry which comprises such a slurry introduction device disposed in a top region thereof.
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