公开(公告)号：US20140186901A1

公开(公告)日：2014-07-03

申请号：US14141683

申请日：2013-12-27

Applicant: API Intellectual Property Holdings, LLC

Inventor： Theodora RETSINA ,  Vesa PYLKKANEN ,  Kimberly NELSON ,  James Christian SAMP

IPC: C08B1/00 ,  C12P19/02

CPC classification number: C12P19/02 ,  C08B37/0003 ,  C08B37/0057 ,  C08H6/00 ,  C08H8/00 ,  C12P19/14 ,  C12P2201/00 ,  C12P2203/00 ,  D21C3/20 ,  D21C3/222

Abstract: In some variations, the invention provides a process for fractionating biomass, comprising: fractionating the biomass in the presence of a solvent for lignin, sulfur dioxide, and water, to produce a liquor containing hemicellulose, cellulose-rich solids, and lignin; hydrolyzing the hemicellulose contained in the liquor, to produce hemicellulosic monomers; hydrolyzing the cellulose-rich solids to produce glucose; and recovering the hemicellulosic monomers and the glucose, as fermentable sugars, wherein a metal sulfite or metal bisulfite additive is introduced to react directly or indirectly with lignin to produce sulfonated lignin. The disclosed processes may enhance lignin separations as well as promote the co-product potential of lignin.

Abstract translation: 在一些变型中，本发明提供了一种用于分馏生物质的方法，包括：在木素，二氧化硫和水的溶剂存在下分解生物质，以产生含有半纤维素，富含纤维素的固体和木质素的液体; 水解液体中所含的半纤维素，以产生半纤维素单体; 水解富含纤维素的固体产生葡萄糖; 并回收半纤维素单体和葡萄糖作为可发酵糖，其中引入金属亚硫酸盐或金属亚硫酸氢盐添加剂直接或间接与木质素反应以产生磺化的木质素。 所公开的方法可以增强木质素分离以及促进木质素的共同产物潜力。

公开(公告)号：US20140065682A1

公开(公告)日：2014-03-06

申请号：US14017286

申请日：2013-09-03

Applicant: API Intellectual Property Holdings, LLC

Inventor： Theodora RETSINA ,  Vesa PYLKKANEN ,  Kimberly NELSON ,  Mark SZCZEPANIK ,  James Christian SAMP

IPC: C13K1/02 ,  C12P7/16 ,  C12P7/10

CPC classification number: C13K1/02 ,  C12P7/10 ,  C12P7/16 ,  C12P2203/00 ,  C13K13/00 ,  C13K13/002 ,  D21C11/0007 ,  Y02E50/10 ,  Y02E50/16 ,  Y02P40/44

Abstract: Variations of this invention reduce or avoid lignin precipitation during acidic hydrolysis of biomass hydrolysates (such as hemicellulose-containing liquid extracts). Net acid usage and byproduct salt formation are significantly reduced. In some embodiments, hemicellulosic oligomers are hydrolyzed, in the presence of sulfur dioxide, to produce fermentable hemicellulosic sugars; the process comprising recovering and recycling at least a portion of the sulfur dioxide, wherein at least a portion of the sulfur dioxide reacts with the lignin to produce hydrophilic sulfonated lignin that has less tendency to precipitate or stick. In other embodiments, hemicellulosic oligomers are hydrolyzed, in the presence of a catalyst selected from the group consisting of sulfuric acid, sulfurous acid, sulfur dioxide, and combinations thereof, and an additive selected from metal sulfites, metal bisulfites, and combinations thereof, to produce fermentable hemicellulosic sugars, wherein at least a portion of the additive reacts with the lignin to produce sulfonated lignin.

Abstract translation: 本发明的变化减少或避免在生物质水解产物（例如含半纤维素的液体提取物）的酸性水解期间的木质素沉淀。 净酸用量和副产物盐形成显着减少。 在一些实施方案中，半纤维素低聚物在二氧化硫存在下水解以产生可发酵的半纤维素糖; 该方法包括回收和回收至少一部分二氧化硫，其中至少一部分二氧化硫与木质素反应产生亲水性磺化木质素，其具有较少的沉淀或粘附倾向。 在其它实施方案中，在选自硫酸，亚硫酸，二氧化硫及其组合的催化剂存在下，半纤维素低聚物和选自金属亚硫酸盐，金属亚硫酸氢盐及其组合的添加剂， 产生可发酵的半纤维素糖，其中至少一部分添加剂与木质素反应产生磺化的木质素。