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

IPC: D21C1/04 ,  C08H8/00 ,  C12P7/10 ,  C12P19/02 ,  C12P19/14

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.

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

IPC: C12P19/02 ,  C12P7/10 ,  C12P19/14 ,  C13K1/02

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.

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.

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

IPC: C12P19/02 ,  C12P19/14 ,  C13K1/02 ,  C12P7/10 ,  C12M1/00 ,  D21C1/04 ,  C13K13/00 ,  B01D3/06

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.

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

IPC: C12M1/00 ,  C12P19/14 ,  D21C3/06 ,  C12P7/14 ,  D21C1/02 ,  D21C1/04 ,  C12P19/02 ,  C12P7/10

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.