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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：US20250001351A1
公开(公告)日：2025-01-02
申请号：US18695788
申请日：2022-09-21
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan , John Dechman
IPC: B01D53/047 , B01D53/14 , B01D53/44
Abstract: A method for upgrading biogas wherein biogas is provided in one or more pressurized vessels. A plurality of pressurized feeds are produced in a process comprising decompressing biogas from at least one of the one or more vessels and as the biogas is decompressed providing portions of the biogas at successively lower pressures. The plurality of pressurized feeds, which have different average pressures, are provided to a pressure swing adsorption process wherein an adsorbent bed is pressurized by successively feeding gas from each of the pressurized feeds in the plurality into the adsorbent bed in order of increasing average pressure. Accordingly, compression costs can be reduced.
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公开(公告)号：US20240131469A1
公开(公告)日：2024-04-25
申请号：US18547612
申请日：2022-03-14
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan
CPC classification number: B01D53/226 , B01D53/62 , B01D2256/245 , B01D2257/102 , B01D2257/504 , B01D2258/05
Abstract: A process and/or system for processing a pressurized gas mixture by membrane separation. Portions of the pressurized gas mixture are withdrawn and provided as a plurality of pressurized gas streams at successively lower pressures. Each portion, provided as a respective pressurized gas stream, is provided for processing in a respective membrane system, each of which is at a different pressure level. Partially purified streams produced by one or more membrane systems are provided for processing at lower pressure levels (e.g., where they are combined with one of the pressurized gas streams). Accordingly, costs associated with recycle compression are reduced and/or eliminated.
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公开(公告)号：US11008598B2
公开(公告)日：2021-05-18
申请号：US15550525
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan
Abstract: Provided herein is a process for producing a fermentation product from a lignocellulosic feedstock. The process comprises soaking a lignocellulosic feedstock in an aqueous solution to produce a soaked feedstock. The soaked feedstock is at least partially dewatered and the at least partially dewatered feedstock is subjected to pretreating. The pretreatment chemical is sulfur dioxide, sulfurous acid or a combination thereof and can be added to the process at any stage prior to and/or during pretreatment. The pretreated feedstock composition is fed to an enzymatic hydrolysis conducted at a temperature that is higher than 58° C. The cellulose in the pretreated feedstock composition is hydrolyzed with cellulase enzymes in the presence of the dissolved solids to produce glucose. The glucose is fermented to produce the fermentation product.
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公开(公告)号：US20200263209A1
公开(公告)日：2020-08-20
申请号：US16761192
申请日：2018-11-09
Applicant: Iogen Corporation
Inventor： Daniel G. MacDonald , Jeffrey S. Tolan , Brian Foody
Abstract: A process for producing a fuel from lignocellulosic biomass is disclosed. The process includes obtaining a feedstock comprising lignocellulosic biomass, feeding the feedstock and sulfur dioxide into a pretreatment reactor, wherein a total amount of sulfur dioxide in the pretreatment reactor is greater than 70 wt % based on dry weight lignocellulosic biomass, and heating the feedstock and sulfur dioxide in the pretreatment reactor at one or more temperatures between 110° C. and 150° C. for more than 60 minutes.
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Patent Agency Ranking
公开(公告)号：US20180037915A1
公开(公告)日：2018-02-08
申请号：US15550525
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan
CPC classification number: C12P19/02 , C12P7/02 , C12P7/10 , C12P19/14 , C12P2203/00 , D21C1/00 , D21C1/04 , D21C5/005 , Y02E50/16
Abstract: Provided herein is a process for producing a fermentation product from a lignocellulosic feedstock. The process comprises soaking a lignocellulosic feedstock in an aqueous solution to produce a soaked feedstock. The soaked feedstock is at least partially dewatered and the at least partially dewatered feedstock is subjected to pretreating. The pretreatment chemical is sulfur dioxide, sulfurous acid or a combination thereof and can be added to the process at any stage prior to and/or during pretreatment. The pretreated feedstock composition is fed to an enzymatic hydrolysis conducted at a temperature that is higher than 58° C. The cellulose in the pretreated feedstock composition is hydrolyzed with cellulase enzymes in the presence of the dissolved solids to produce glucose. The glucose is fermented to produce the fermentation product.
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7.发明申请公开(公告)号：US20180037862A1
公开(公告)日：2018-02-08
申请号：US15550537
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan , Daniel MacDonald , Patrick J. Foody
CPC classification number: C12M45/03 , B01D53/002 , B01D2257/302 , C12M45/09 , C12M45/20 , C12P7/10 , C12P7/14 , C12P19/02 , C12P19/14 , C12P2201/00 , C12Y302/01004 , D21C1/02 , D21C1/04 , D21C3/06 , Y02E50/16
Abstract: The present invention provides a process for producing a fermentation product from a lignocellulosic feedstock. The process comprises soaking a lignocellulosic feedstock in an aqueous solution to produce a soaked feedstock. The soaked feedstock is at least partially dewatered and the at least partially dewatered feedstock is subjected to pretreating in the presence of sulfur dioxide, sulfurous acid or a combination thereof to produce a pretreated feedstock composition. The pretreated feedstock composition is fed to an enzymatic hydrolysis in which the concentration of dissolved solids fed to the enzymatic hydrolysis is at least 50% (w/w) of the concentration of dissolved solids in the pretreated feedstock composition. The cellulose in the pretreated feedstock composition is hydrolyzed with cellulase enzymes in the presence of the dissolved solids to produce glucose. The glucose is fermented to produce the fermentation product.
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8.发明授权公开(公告)号：US10513714B2
公开(公告)日：2019-12-24
申请号：US15550515
申请日：2016-03-16
Applicant: Iogen Corporation
Inventor： Brian Foody , Jeffrey S. Tolan
IPC: C12P19/02 , C12P7/10 , C01C1/24 , C05C3/00 , C05D1/02 , C08H8/00 , C12P19/14 , C10L1/02 , C05F17/00 , C01D5/00 , C01D5/04 , C07G1/00 , C12P7/16 , C12F3/00 , C12P5/02 , C12P7/22 , C01C1/16
Abstract: Provided herein is a process for producing one or more products from a lignocellulosic feedstock. The process comprises treating the lignocellulosic feedstock by contacting the feedstock at least sulfur dioxide, sulfurous acid, or a combination thereof to produce a pretreated feedstock comprising one or more sulfonic acids. A process stream comprising one or more sulfonic acids is subsequently treated in a wet oxidation step to produce a stream comprising at least soluble oxidized phenolic compounds. The soluble oxidized phenolic compounds are then fed to an anaerobic digestion to produce methane. Optionally, hydrogen sulfide is produced during the anaerobic digestion. The hydrogen sulfide may then be converted to an acid selected from sulfur dioxide, sulfurous acid or a combination thereof in one or more steps. The acid may then be re-used in treatment as desired.
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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：US11345935B2
公开(公告)日：2022-05-31
申请号：US16761192
申请日：2018-11-09
Applicant: Iogen Corporation
Inventor： Daniel G. MacDonald , Jeffrey S. Tolan , Brian Foody
Abstract: A process for producing a fuel from lignocellulosic biomass is disclosed. The process includes obtaining a feedstock comprising lignocellulosic biomass, feeding the feedstock and sulfur dioxide into a pretreatment reactor, wherein a total amount of sulfur dioxide in the pretreatment reactor is greater than 70 wt % based on dry weight lignocellulosic biomass, and heating the feedstock and sulfur dioxide in the pretreatment reactor at one or more temperatures between 110° C. and 150° C. for more than 60 minutes.
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