公开(公告)号：US20180258450A1

公开(公告)日：2018-09-13

申请号：US15979768

申请日：2018-05-15

Applicant: GreenField Specialty Alcohols Inc.

Inventor： Frank A. DOTTORI ,  Robert Ashley Cooper BENSON ,  Regis-Olivier BENECH

IPC: C12P7/14 ,  D21B1/36 ,  C12P7/10 ,  C13K13/00 ,  D21C3/22 ,  C13K1/02

CPC classification number: D21C3/22 ,  C12P7/10 ,  C12P2201/00 ,  C13K1/02 ,  C13K13/002 ,  D21B1/36 ,  Y02E50/16

Abstract: A process is defined for the continuous steam pretreatment and fractionation of 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 xylo-oligosaccharides rich liquids fraction is recovered that can be converted to value added products including ethanol.

公开(公告)号：US20160069020A1

公开(公告)日：2016-03-10

申请号：US14940992

申请日：2015-11-13

Applicant: GREENFIELD SPECIALTY ALCOHOLS INC.

Inventor： Frank A. DOTTORI ,  Robert Ashley Cooper BENSON ,  Régis-Olivier BENECH

IPC: D21C1/02

CPC classification number: D21C1/02 ,  C08B37/0057 ,  C08H8/00 ,  C12P7/10 ,  C12P19/02 ,  C12P19/14 ,  C12P2201/00 ,  C13K1/02 ,  C13K13/002 ,  D21C11/0007 ,  D21H11/12

Abstract: 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.

Abstract translation: 定义了一种用于连续蒸汽预处理和甘蔗渣分级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。

公开(公告)号：US20160251682A1

公开(公告)日：2016-09-01

申请号：US15150946

申请日：2016-05-10

Applicant: GreenField Specialty Alcohols Inc.

Inventor： Frank A. DOTTORI ,  Robert Ashley Cooper BENSON ,  Regis-Olivier BENECH

IPC: C12P7/14 ,  D21C3/22

CPC classification number: D21C3/22 ,  C12P7/10 ,  C12P2201/00 ,  C13K1/02 ,  C13K13/002 ,  D21B1/36 ,  Y02E50/16

Abstract: A process is defined for the continuous steam pretreatment and fractionation of 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 xylo-oligosaccharides rich liquids fraction is recovered that can be converted to value added products including ethanol.

Abstract translation: 定义了一种用于连续蒸汽预处理和低木质素木质纤维素生物质的分级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。 回收富含木寡糖的液体馏分，其可以转化成包括乙醇的增值产物。

公开(公告)号：US20160152737A1

公开(公告)日：2016-06-02

申请号：US15013550

申请日：2016-02-02

Applicant: GREENFIELD SPECIALTY ALCOHOLS INC.

Inventor： Frank A. DOTTORI ,  Robert Ashley Cooper BENSON ,  Régis-Olivier BENECH

IPC: C08B37/00

CPC classification number: C08B37/0057 ,  C08H8/00

Abstract: Disclosed is a method of steam explosion pretreating biomass in a two stage steam pretreatment process for improved carbohydrate fractionation. The first stage steam 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. The second stage steam pretreatment 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 by atmospheric steam heating and adjusting the moisture content of the biomass. Hemicellulose sugars and inhibitors (inhibitory compounds) to downstream hydrolysis and fermentation are preferably removed between the first and second steam pretreating stages, more preferably after each steam pretreatment stage.

Abstract translation: 公开了一种在两级蒸汽预处理方法中预处理生物质的蒸汽爆炸的方法，用于改进碳水化合物分馏。 第一阶段的蒸汽预处理通过在105-150psig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。 第二级蒸汽预处理通过在167-226psig的第二级压力下将生物质加热到第二阶段温度为190℃至210℃，进行第二阶段时间为2-10分钟。 生物质可以最初通过大气蒸汽加热调节并调节生物质的水分含量。 优选在第一和第二蒸汽预处理阶段之间去除下游水解和发酵的半纤维素糖和抑制剂（抑制化合物），更优选在每个蒸汽预处理阶段之后。