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1.发明授权公开(公告)号：US11299850B2
公开(公告)日：2022-04-12
申请号：US16761180
申请日：2018-11-09
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan , Daniel G. MacDonald , Kristin Martens , Natacha Leduc , Douglas A. MacKenzie
Abstract: A process for converting lignocellulosic biomass to glucose or ethanol includes subjecting the lignocellulosic biomass to a SO2 pretreatment within the temperature range 110° C.-150° C. Good glucose yields have been achieved when the SO2 pretreatment is conducted for more than 90 minutes and when the total amount of SO2 available is greater than 20 wt % based on dry weight of lignocellulosic biomass.
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公开(公告)号：US10995314B2
公开(公告)日：2021-05-04
申请号：US15550582
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Daniel G. MacDonald , Kristin Martens , Natacha Leduc , John Dechman , Robert Griffin
IPC: C12M1/00 , C12P19/02 , C12P19/14 , C12P7/10 , D21C1/02 , D21C1/04 , D21C3/06 , B01D53/00 , C12P7/14 , B01D53/50 , B01D53/14
Abstract: A process for producing ethanol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an equivalent sulfur dioxide loading of at least 10 wt % sulfur dioxide to dry lignocellulosic biomass. The acidified lignocellulosic biomass is pretreated at a temperature above about 185° C. and for a pretreatment time less than about 10 minutes, to provide a pretreated biomass composition wherein the biomass is readily hydrolyzed by enzymes. Advantageously, sulfur dioxide from at least one of the flash stream and a stream derived from the flash is recovered and recycled back into the process.
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公开(公告)号：US10662455B2
公开(公告)日：2020-05-26
申请号：US16061254
申请日：2016-09-16
Applicant: Iogen Corporation
Inventor： Jeffrey S. Tolan , Daniel G. MacDonald , Kristin Martens , Natacha Leduc , Brian Foody
Abstract: A process for producing alcohol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an effective sulfur dioxide dosage and/or effective sulfur dioxide slurry concentration, each of which is calculated using the ratio of the volume of the slurry in the pretreatment reactor to the total volume of the pretreatment reactor, within a predetermined range.
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Patent Agency Ranking
公开(公告)号：US20180037863A1
公开(公告)日：2018-02-08
申请号：US15550582
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Daniel G. MacDonald , Kristin Martens , Natacha Leduc , John Dechman , Robert Griffin
CPC classification number: C12M45/03 , B01D53/002 , B01D53/1481 , B01D53/501 , B01D2251/60 , B01D2252/10 , B01D2252/102 , B01D2257/302 , C12M45/09 , C12M45/20 , C12P7/10 , C12P7/14 , C12P19/02 , C12P19/14 , C12P2201/00 , C12P2203/00 , C12Y302/01004 , D21C1/02 , D21C1/04 , D21C3/06 , Y02E50/16
Abstract: A process for producing ethanol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an equivalent sulfur dioxide loading of at least 10 wt % sulfur dioxide to dry lignocellulosic biomass. The acidified lignocellulosic biomass is pretreated at a temperature above about 185° C. and for a pretreatment time less than about 10 minutes, to provide a pretreated biomass composition wherein the biomass is readily hydrolyzed by enzymes. Advantageously, sulfur dioxide from at least one of the flash stream and a stream derived from the flash is recovered and recycled back into the process.
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公开(公告)号：US20230340543A1
公开(公告)日：2023-10-26
申请号：US17998759
申请日：2021-04-23
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan , Kristin Martens
CPC classification number: C12P7/06 , C08H8/00 , C10L1/02 , C12P5/026 , C12P19/02 , C12P19/14 , C10L2200/0469 , C10L2290/10 , C10L2290/12 , C10L2290/26 , C12P2201/00
Abstract: A process for converting lignocellulosic biomass to fuel, wherein lignocellulosic feedstock is soaked in a sulfuric acid solution to demineralize the feedstock, the demineralized feedstock is pretreated at a temperature between 150° C. and 230° C. and a pH between 1 and 2.5, at least part of the pretreated material is converted to a fermentation production such as ethanol, and at least a portion of a secondary stream, such as still bottoms from the distillation of ethanol, is converted to biogas by anaerobic digestion. Soaking the lignocellulosic feedstock in sulfuric acid solution reduces the amount of sulfuric acid required for the pretreatment, and thus the amount of sulfate carried downstream to the anaerobic digestion. This increases the biogas yield and/or xylose yield. A recycling process, wherein mineralized soaking liquid produced in the soaking process is fed to cation exchange to remove minerals, reduces excess waste of the sulfuric acid and water usage.
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公开(公告)号：US20180363017A1
公开(公告)日：2018-12-20
申请号：US16061254
申请日：2016-09-16
Applicant: Iogen Corporation
Inventor： Jeffrey S. Tolan , Daniel G. MacDonald , Kristin Martens , Natacha Leduc , Brian Foody
CPC classification number: C12P19/02 , B01D3/06 , C12M45/06 , C12M45/09 , C12P7/10 , C12P19/14 , C12P2201/00 , C13K1/02 , C13K13/002 , D21C1/04 , Y02E50/16
Abstract: A process for producing alcohol from lignocellulosic biomass includes adding at least one of sulfur dioxide and sulfurous acid to the lignocellulosic biomass to provide an effective sulfur dioxide dosage and/or effective sulfur dioxide slurry concentration, each of which is calculated using the ratio of the volume of the slurry in the pretreatment reactor to the total volume of the pretreatment reactor, within a predetermined range.
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公开(公告)号：US10087476B2
公开(公告)日：2018-10-02
申请号：US15034867
申请日：2014-12-04
Applicant: Iogen Corporation
Inventor： Brian E. Foody , Kristin Martens , Patrick J. Foody , Jeffrey S. Tolan
IPC: C07G1/00 , C08H8/00 , C12P7/04 , C12P7/10 , C12P19/02 , C12P19/14 , D21C1/02 , D21C3/04 , D21C11/00 , C08H7/00
Abstract: A process for hydrolyzing a pretreated lignocellulosic feedstock is disclosed herein. The process comprises hydrolyzing the pretreated lignocellulosic feedstock with an enzyme mixture comprising at least cellulase enzymes to produce a hydrolyzed slurry comprising glucose and lignin solids. The hydrolyzing is conducted in the presence of a polymer, such as an aliphatic polyether. A solids-liquid separation is conducted to recover lignin solids from a process stream comprising the lignin solids and the polymer. A process stream is then obtained comprising recovered lignin solids resulting from the solids-liquid separation. Also provided are processes for recovering the polymer from the lignin solids and/or from solution.
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公开(公告)号：US20160273011A1
公开(公告)日：2016-09-22
申请号：US15034867
申请日：2014-12-04
Applicant: IOGEN CORPORATION
Inventor： Brian E. Foody , Kristin Martens , Patrick J. Foody , Jeffrey S. Tolan
CPC classification number: C12P19/14 , C07G1/00 , C08H6/00 , C08H8/00 , C12P7/04 , C12P7/10 , C12P19/02 , C12P2201/00 , D21C1/02 , D21C3/04 , D21C11/0007 , Y02E50/16
Abstract: The present invention relates to a process for hydrolyzing a pretreated lignocellulosic feedstock. The process comprises hydrolyzing the pretreated lignocellulosic feedstock with an enzyme mixture comprising at least cellulase enzymes to produce a hydrolyzed slurry comprising glucose and lignin solids. The hydrolyzing is conducted in the presence of a polymer, such as for example an aliphatic polyether. A solids-liquid separation is conducted to recover lignin solids from a process stream comprising the lignin solids and the polymer. A process stream is then obtained comprising recovered lignin solids resulting from the solids-liquid separation. Also provided are processes for recovering the polymer from the lignin solids and/or from solution.
Abstract translation: 本发明涉及一种水解预处理的木质纤维素原料的方法。 该方法包括用至少包含纤维素酶的酶混合物水解预处理的木质纤维素原料，以产生包含葡萄糖和木质素固体的水解浆料。 水解在聚合物如脂族聚醚存在下进行。 进行固体 - 液体分离以从包含木质素固体和聚合物的工艺流中回收木质素固体。 然后获得包含由固体 - 液体分离产生的回收的木质素固体的工艺流。 还提供了从木质素固体和/或从溶液中回收聚合物的方法。
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