公开(公告)号：EP2758589A1

公开(公告)日：2014-07-30

申请号：EP12834440.5

申请日：2012-09-19

申请人： Iogen Energy Corporation

发明人： VAN DER MEULEN, Torbjorn ,  ROWLAND, Stephen A.

IPC分类号： D21C1/02 ,  C08L1/02 ,  C08L5/00 ,  C08L97/02 ,  C12P19/00 ,  C12P7/02 ,  C12P7/10 ,  D21C1/10 ,  C13K1/02

CPC分类号： C13K1/02 ,  C08H8/00 ,  C08L97/02 ,  C12P7/10 ,  C12P19/02 ,  C12P2201/00 ,  C13K13/002 ,  C13K13/007 ,  D21C1/02 ,  Y02E50/16

摘要： The present invention provides a method for producing a pretreated or hydrolyzed lignocellulosic feedstock. The method comprises feeding a lignocellulosic feedstock to a plug formation device and forming a feedstock plug therein. The plug or segments thereof are fed into an elongate chamber that comprises steam addition means for direct steam addition and a rotating shaft mounted co-axially within the chamber having one or more disintegrating elements mounted on it. Disintegrated feedstock particles are produced in the elongate chamber by the disintegrating elements. The disintegrated feedstock particles are heated by contact with the steam introduced through the steam addition means. The disintegrated feedstock particles are then treated in a reactor to produce the pretreated or hydrolyzed lignocellulosic feedstock. Further provided is a feedstock composition comprising disintegrated feedstock particles. Also provided are methods for reducing erosion on equipment by maintaining the discharge consistency from the plug formation device below 35 wt%.

公开(公告)号：EP2329047A1

公开(公告)日：2011-06-08

申请号：EP09809152.3

申请日：2009-08-28

申请人： Iogen Energy Corporation

发明人： ANAND, Vijay Kumar ,  ROWLAND, Stephen A. ,  FOODY, Patrick, Sr.

IPC分类号： C13K1/02 ,  C08H8/00

CPC分类号： C12P7/10 ,  C08H8/00 ,  C10G2300/1014 ,  C10G2300/4012 ,  C10G2300/807 ,  C10L1/02 ,  C12P19/02 ,  C12P2201/00 ,  C13K1/02 ,  Y02E50/16 ,  Y02P30/20

摘要： A method is provided for hydrolyzing polysaccharides in a lignocellulosic feedstock to produce monosaccharides or pretreating a lignocellulosic feedstock, in which an aqueous slurry of the lignocellulosic feedstock is fed into a pressurized dewatering zone wherein the feedstock is partially dewatered and then is compressed into a plug. The plug is introduced into a reaction zone that operates at a pressure (P
r ) equal to greater than about 90 psia and under suitable temperature and pH conditions to hydrolyze the polysaccharides or pretreat the feedstock. The plug provides a pressure seal between the outlet of the dewatering zone and the reaction zone. The pressure (P
dwi ) of the aqueous slurry of the lignocellulosic feedstock at the inlet of the dewatering device is related to P
r as follows: 0≤ΔP r - 20 psia) and 220 psia], and where ΔP is the absolute difference in pressure between P
r and P
dwi in psia.

公开(公告)号：EP2185715A1

公开(公告)日：2010-05-19

申请号：EP08783320.8

申请日：2008-07-31

申请人： Iogen Energy Corporation

发明人： TOLAN, Jeffrey S. ,  FOODY, Brian E. ,  ROWLAND, Stephen A.

IPC分类号： C12P19/02 ,  B01D3/00 ,  C12P19/00 ,  C12P7/10 ,  C07H3/02 ,  C08H5/04 ,  C13K1/02

CPC分类号： C07H3/02 ,  B01D3/001 ,  C07K14/195 ,  C08H8/00 ,  C12P7/10 ,  C12P19/02 ,  C13K1/02 ,  Y02E50/16 ,  Y02E50/17 ,  Y02P20/582

摘要： A process for the production of glucose and ethanol from a pretreated lignocellulosic feedstock is provided. The method comprises enzymatically hydrolyzing the pretreated lignocellulosic feedstock with cellulase enzymes to produce a hydrolyzate slurry comprising glucose and unhydrolyzed cellulose and fermenting the hydrolyzate slurry in a fermentation reaction to produce a fermentation broth comprising alcohol. A process stream is obtained comprising unhydrolyzed cellulose, which is then subjected to a denaturing step, preferably comprising exposing the unhydrolyzed cellulose to elevated temperatures, thereby producing a heat-treated stream comprising the unhydrolyzed cellulose. The heat-treated stream comprising unhydrolyzed cellulose is then further hydrolyzed with cellulase enzymes to hydrolyze the cellulose to glucose.