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1. 发明申请

US20130029406A1 TWO STAGE CONTINUOUS PRE-TREATMENT OF LIGNOCELLULOSIC BIOMASS 有权
标题翻译：两阶段连续预处理细菌生物量
公开(公告)号：US20130029406A1
公开(公告)日：2013-01-31
申请号：US13554601
申请日：2012-07-20
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
IPC分类号： C12S3/02 , C08B37/00
CPC分类号： C08H8/00 , C08B37/0057 , Y02E50/16 , Y02E50/343
摘要： Disclosed is a method of pretreating biomass in two pretreatment stages as part of a biofuel production process. The first stage pretreatment is carried out by heating the biomass to a first stage temperature of 140° C. to 180° C. for a first stage time of 30 minutes to 2 hours at a first stage pressure of 105 to 150 psig; and the second stage is carried out by heating the biomass to a second stage temperature of 190° C. to 210° C. for a second stage time of 2 to 10 minutes at a second stage pressure of 167 to 262 psig. The biomass may be initially conditioned prior to the first pretreatment stage by atmospheric steam heating and adjusting the moisture content of the biomass. Hemicellulose and inhibitors (inhibitory compounds) to downstream hydrolysis and fermentation are preferably removed between the first and second pretreating stages, more preferably after each pretreatment stage.
摘要翻译：公开了在两个预处理阶段中预处理生物质的方法，作为生物燃料生产过程的一部分。第一阶段预处理通过在105至150psig的第一阶段压力下将生物质加热至140℃至180℃的第一阶段温度进行30分钟至2小时的第一阶段时间; 并且第二阶段通过在167-226psig的第二阶段压力下将生物质加热至190℃至210℃的第二阶段温度进行2至10分钟的第二阶段时间。生物质可以在第一预处理阶段之前通过大气蒸汽加热和调节生物量的水分含量进行初始调节。优选在第一和第二预处理阶段之间去除下游水解和发酵的半纤维素和抑制剂（抑制化合物），更优选在每个预处理阶段之后。

2. 发明申请

US20130014749A1 CONDITIONING OF BIOMASS FOR IMPROVED C5/C6 SUGAR RELEASE PRIOR TO FERMENTATION 有权
标题翻译：生物量调节改善C5 / C6蔗糖发酵前的发酵
公开(公告)号：US20130014749A1
公开(公告)日：2013-01-17
申请号：US13547508
申请日：2012-07-12
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
IPC分类号： C13K13/00
CPC分类号： C13K1/02 , C12P2201/00
摘要： Disclosed is an improvement in a conventional process for C5 and C6 sugar recovery from lignocellulosic biomass for fermentation to ethanol, which process including the conventional steps of pretreatment of the biomass with steam at elevated temperature and pressure, collection of C5 sugars from hemicellulose breakdown, cellulose hydrolysis and collection of C6 sugars from cellulose breakdown. The improvement includes conditioning of the biomass prior to the pretreatment step by heating the biomass with steam for a time period between 5 minutes to 60 minutes to achieve a steam treated biomass having a temperature of about 80 to 100°C.; and adjusting a moisture content of the steam treated biomass to about 45% to 80%. An increased recovery of C5 and C6 sugars is achieved compared to the conventional process.
摘要翻译：公开了用于发酵到乙醇的木质纤维素生物质的C5和C6糖回收的常规方法的改进，该方法包括在高温和高压下用蒸汽预处理生物质的常规步骤，从半纤维素分解中收集C5糖，从纤维素分解中收集C5糖从纤维素分解中水解和收集C6糖。改进包括在预处理步骤之前通过用蒸汽加热生物质在5分钟至60分钟之间的时间段来调节生物质，以实现温度为约80至100℃的经蒸汽处理的生物质; 并将蒸汽处理的生物质的水分含量调节至约45％至80％。与常规方法相比，实现了C5和C6糖的增加的恢复。

3. 发明申请

US20120329116A1 PRETREATMENT OF LIGNOCELLULOSIC BIOMASS THROUGH REMOVAL OF INHIBITORY COMPOUNDS 审中-公开
标题翻译：通过去除抑制性化合物预处理细菌生物量
公开(公告)号：US20120329116A1
公开(公告)日：2012-12-27
申请号：US13555645
申请日：2012-07-23
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
IPC分类号： D21B1/36 , C12P7/14
CPC分类号： D21B1/36 , C12P2201/00 , D21C1/02 , D21C5/005 , D21C11/0007
摘要： A process for the pretreatment of lignocellulosic biomass is disclosed, which includes the steps of pretreating the lignocellulosic biomass to hydrolyze and solubilize hemicelluloses in the biomass; explosively decomposing the biomass into fibers; and extracting from the resulting solids fraction a liquefied portion of the lignocellulosic biomass before or after explosive decomposition. This removes compounds from the lignocellulosic biomass which are inhibitory to enzymatic cellulose hydrolysis and sugar fermentation to ethanol. For improved economy, the inhibitory compounds are not completely removed. The extraction step is controlled on the basis of the xylose equivalent content in the reaction mixture and the extracting step is discontinued once a xylose equivalent content of 4-8% w/w of xylose in the dry matter of the solids fraction is achieved. This most economically balances the practical need for inhibitory compound removal with the economical need to minimize the costs of the overall ethanol production process.
摘要翻译：公开了一种用于木质纤维素生物质的预处理的方法，其包括预处理木质纤维素生物质以在生物质中水解和增溶半纤维素的步骤; 将生物质爆炸分解成纤维; 并从所得固体部分提取在爆炸性分解之前或之后的木质纤维素生物质的液化部分。这从木质纤维素生物质中除去抑制酶纤维素水解和糖发酵成乙醇的化合物。为了改善经济性，抑制性化合物不能完全去除。提取步骤基于反应混合物中的木糖当量含量进行控制，一旦实现固体部分的干物质中木糖当量含量为4-8％w / w的木糖，就停止萃取步骤。这最经济地平衡了抑制化合物去除的实际需要与经济需要最小化整个乙醇生产过程的成本。

4. 发明申请

US20130017589A1 FRACTIONATION OF LIGNOCELLULOSIC BIOMASS FOR CELLULOSIC ETHANOL AND CHEMICAL PRODUCTION 审中-公开
标题翻译：纤维素乙醇纤维素生物质的分解和化学生产
公开(公告)号：US20130017589A1
公开(公告)日：2013-01-17
申请号：US13551087
申请日：2012-07-17
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Regis-Olivier BENECH
IPC分类号： D21B1/36 , C12P7/10
CPC分类号： D21B1/36 , C12P7/10 , C13K1/02 , C13K13/002 , Y02E50/16
摘要： A process is defined for the continuous steam pretreatment and fractionation of corn cobs and low lignin lignocellulosic biomass to produce a concentrated cellulose solid stream that is sensitive to enzymatic hydrolysis. Valuable chemicals are recovered by fractionating the liquid and vapor stream composed of hydrolysis and degradation products of the hemicellulose. Cellulosic derived glucose is produced for fermentation to biofuels. A hemicellulose concentrate is recovered that can be converted to value added products including ethanol.
摘要翻译：定义了一种用于玉米芯和低木质素木质纤维素生物质的连续蒸汽预处理和分馏以产生对酶水解敏感的浓缩纤维素固体物流的方法。通过分离由半纤维素的水解和降解产物组成的液体和蒸汽流来回收有价值的化学品。生产用于发酵的生物燃料的纤维素衍生的葡萄糖。回收可以转化成包括乙醇在内的增值产品的半纤维素浓缩物。

5. 发明申请

US20120111514A1 BAGASSE FRACTIONATION FOR CELLULOSIC ETHANOL AND CHEMICAL PRODUCTION 有权
标题翻译： BAGASSE分解用于纤维素乙醇和化学生产
公开(公告)号：US20120111514A1
公开(公告)日：2012-05-10
申请号：US13289358
申请日：2011-11-04
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
IPC分类号： D21C1/02
CPC分类号： D21C1/02 , C08H8/00 , C12P7/10 , C12P19/02 , C12P19/14 , C12P2201/00 , C13K1/02 , C13K13/002 , D21C1/06 , D21C11/0007 , Y02E50/16
摘要： A process is defined for the continuous steam pretreatment and fractionation of bagasse to produce a concentrated cellulose solid stream that is sensitive to enzymatic hydrolysis. Valuable chemicals are recovered by fractionating the liquid and vapor stream composed of hydrolysis and degradation products of the hemicellulose. Cellulosic derived glucose is produced for fermentation to biofuels. A hemicellulose concentrate is recovered that can be converted to value added products including ethanol.
摘要翻译：定义了一种用于连续蒸汽预处理和甘蔗渣分馏以制备对酶水解敏感的浓缩纤维素固体物流的方法。通过分离由半纤维素的水解和降解产物组成的液体和蒸汽流来回收有价值的化学品。生产用于发酵的生物燃料的纤维素衍生的葡萄糖。回收可以转化成包括乙醇在内的增值产品的半纤维素浓缩物。

6. 发明申请

US20100263814A1 PRETREATMENT OF LIGNOCELLULOSIC BIOMASS THROUGH REMOVAL OF INHIBITORY COMPOUNDS 审中-公开
标题翻译：通过去除抑制性化合物预处理细菌生物量
公开(公告)号：US20100263814A1
公开(公告)日：2010-10-21
申请号：US12755874
申请日：2010-04-07
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
IPC分类号： D21B1/36
CPC分类号： D21B1/36 , C12P7/10 , C12P2201/00 , D21C1/02 , D21C5/005 , D21C11/0007 , Y02E50/16
摘要： A process for the pretreatment of lignocellulosic biomass is disclosed. The process is intended for use in connection with biomass to ethanol processes and is directed in particular to an economical removal of inhibitory compounds generated in biomass pretreatment, which are inhibitory to downstream hydrolysis and fermentation steps. The process includes the steps of heating the lignocellulosic biomass with steam to a preselected temperature, at a preselected pressure and for a preselected time to hydrolyze and solubilize hemicelluloses in the biomass; explosively decomposing the biomass into fibers; and extracting from the resulting reaction mixture a liquefied portion of the lignocellulosic biomass before or after explosive decomposition. The liquefied portion is extracted to remove compounds from the lignocellulosic biomass which are inhibitory to enzymatic cellulose hydrolysis and sugar fermentation to ethanol. For improved efficiency and economy, the inhibitory compounds are not completely removed. Furthermore, xylose has been found to be a good indicator compound for the general level of inhibitory compounds in the reaction mixture and the extraction step is therefore controlled on the basis of the xylose content in the reaction mixture. In particular, the extracting step is discontinued once a dry matter (dm) content of xylose, as monomer or oligomer, in the reaction mixture of 4% to 8% (w/w dm) is achieved. This most economically balances the practical need for inhibitory compound removal with the economical need to control and preferably minimize the costs of the overall ethanol production process.
摘要翻译：公开了木质纤维素生物质的预处理方法。该方法旨在用于与生物质与乙醇方法有关的用途，特别涉及经济地除去生物预处理中产生的抑制性化合物，其抑制下游水解和发酵步骤。该方法包括以预定的压力将木质纤维素生物质用蒸汽加热至预选温度并预选水解和增溶生物质中的半纤维素的步骤; 将生物质爆炸分解成纤维; 并从所得反应混合物中提取在爆炸分解之前或之后的木质纤维素生物质的液化部分。提取液化部分以从木质纤维素生物质中除去抑制酶纤维素水解和糖发酵成乙醇的化合物。为了提高效率和经济性，抑制性化合物不能完全去除。此外，已经发现木糖是反应混合物中一般水平的抑制化合物的良好指示剂化合物，因此提取步骤是基于反应混合物中的木糖含量进行控制的。特别是，一旦实现4％至8％（w / w dm）的反应混合物中的木糖，作为单体或低聚物的干物质（dm）含量，则提取步骤停止。这最经济地平衡了抑制性化合物去除的实际需要与经济的控制需求并且优选地最小化整个乙醇生产过程的成本。

7. 发明申请

US20120115200A1 CONTINUOUS PROCESS FOR THE PRODUCTION OF ETHANOL FROM LIGNOCELLULOSIC BIOMASS 有权
标题翻译：连续生产乙醇的连续工艺
公开(公告)号：US20120115200A1
公开(公告)日：2012-05-10
申请号：US13291659
申请日：2011-11-08
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
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％。

8. 发明申请

US20100269990A1 SEPARATION OF REACTIVE CELLULOSE FROM LIGNOCELLULOSIC BIOMASS WITH HIGH LIGNIN CONTENT 失效
标题翻译：具有高木质素含量的细菌生物量的反应性纤维素的分离
公开(公告)号：US20100269990A1
公开(公告)日：2010-10-28
申请号：US12766339
申请日：2010-04-23
申请人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
发明人： Frank A. DOTTORI , Robert Ashley Cooper BENSON , Régis-Olivier BENECH
IPC分类号： D21B1/36
CPC分类号： D21C3/20 , C08H8/00 , C12P7/10 , C12P2201/00 , D21B1/36 , D21C3/04 , D21C3/222 , D21C11/0007 , Y02E50/16
摘要： A process for separating the components of lignocellulosic biomass for the purpose of producing a pure reactive cellulose is disclosed. The process has two stages. In the first stage, the lignocellulosic biomass is pretreated with steam, with or without an acid catalyst, and then pressed, with or without the presence of an eluent, to remove hemicellulose and other impurities. In the second stage, the pretreated biomass is extracted with a solvent such as ethanol with or without acid catalysts in order to remove lignin and release a purified cellulose stream. The extracted cellulose is then rapidly decompressed to rupture the fibrous structure. The process provides a purified cellulose stream that is relatively easy to hydrolyze with enzymes and ferment to biofuels and other chemicals such as ethanol.
摘要翻译：公开了一种用于分离用于生产纯反应性纤维素的木质纤维素生物质组分的方法。这个过程有两个阶段。在第一阶段，木质纤维素生物质用蒸汽预处理，具有或不具有酸催化剂，然后在有或没有洗脱液的情况下压制，以除去半纤维素和其它杂质。在第二阶段中，用或不用酸催化剂的溶剂如乙醇提取预处理的生物质，以除去木质素并释放纯化的纤维素流。然后将提取的纤维素快速减压以破坏纤维结构。该方法提供了一种纯化的纤维素流，其相对容易用酶水解并发酵成生物燃料和其它化学物质如乙醇。

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