中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

97 records (took 0.021 seconds)

    PROCESSES AND APPARATUS FOR PRODUCING FERMENTABLE SUGARS, CELLULOSE SOLIDS, AND LIGNIN FROM LIGNOCELLULOSIC BIOMASS
    71.
    发明申请
    PROCESSES AND APPARATUS FOR PRODUCING FERMENTABLE SUGARS, CELLULOSE SOLIDS, AND LIGNIN FROM LIGNOCELLULOSIC BIOMASS 审中-公开
    生产可食用糖，纤维素固体和木质素生物物质的方法和装置

    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。

    PROCESSES AND APPARATUS FOR LIGNIN SEPARATION IN BIOREFINERIES
    72.
    发明申请
    PROCESSES AND APPARATUS FOR LIGNIN SEPARATION IN BIOREFINERIES 审中-公开
    生物学中木质素分离的方法和装置

    公开(公告)号：US20140034047A1

    公开(公告)日：2014-02-06

    申请号：US13959705

    申请日：2013-08-05

    Applicant: API Intellectual Property Holdings, LLC

    Inventor： Theodora RETSINA ,  Vesa PYLKKANEN ,  Kimberly NELSON ,  Mark SZCZEPANIK

    IPC: C08B1/00

    CPC classification number: C08B1/00 ,  C08B37/0057 ,  C08H6/00 ,  C08H8/00

    Abstract: The present invention generally provides methods of improving lignin separation during lignocellulosic biorefining, comprising the steps of (i) catalyzing fractionation or hydrolysis with an acid to release sugars into an acidified solution containing lignin, (ii) neutralizing the acidified solution with a base to form a salt in a neutralized solution; (iii) in a separation unit, separating the salt and the lignin, each in free or combined form, from the neutralized solution; and then (iv) recycling a portion of the salt and optionally a portion of the lignin to step (i) to combine, physically or chemically, with the lignin, to improve lignin separation in the separation unit. In certain embodiments, the acid is a sulfur-containing acid and the base is lime, forming gypsum which is then recycled, in part, to the hydrolysis reactor.

    Abstract translation: 本发明通常提供在木质纤维素生物精制过程中改善木质素分离的方法，其包括以下步骤：（i）用酸催化分馏或水解以将糖释放到含木质素的酸化溶液中，（ii）用碱中和酸化溶液形成 中和溶液中的盐; （iii）在分离单元中，以中和的溶液将盐和木质素分别以游离或组合的形式分离; 然后（iv）将一部分盐和任选的一部分木质素再循环到步骤（i）中以与木质素物理或化学结合，以改善分离单元中的木质素分离。 在某些实施方案中，酸是含硫酸，碱是石灰，形成石膏，然后将其部分地再循环到水解反应器中。

    STEPWISE ENZYMATIC HYDROLYSIS PROCESS FOR CONVERTING CELLULOSE TO GLUCOSE
    74.
    发明申请
    STEPWISE ENZYMATIC HYDROLYSIS PROCESS FOR CONVERTING CELLULOSE TO GLUCOSE 有权
    用于将纤维素转化成葡萄糖的STEPWISE酶水解方法

    公开(公告)号：US20130266990A1

    公开(公告)日：2013-10-10

    申请号：US13626220

    申请日：2012-09-25

    Applicant: API INTELLECTUAL PROPERTY HOLDINGS, LLC

    Inventor： Theodora RETSINA ,  Vesa PYLKKANEN

    IPC: C12P19/14

    CPC classification number: C12P19/02 ,  C08B37/0003 ,  C08B37/0057 ,  C08H8/00 ,  C12P19/14 ,  C13K1/02 ,  C13K13/00 ,  F23G5/04

    Abstract: A method for the production of alcohol and other bioproducts hemicelluloses extracted from biomass prior to thermal conversion of the biomass to energy. The process can be integrated with the host plant process to minimize the energy loss from extracting hemicelluloses. Also disclosed is a Stepwise enzymatic break down of cellulose fibers from a pulping operation which is performed with the redeployment of equipment and vessels contained within typical existing pulp and paper manufacturing mills. The preferred feedstock is highly delignified pulp from acid or alkaline pulping process or from bleaching stage.

    Abstract translation: 在将生物质热转化为能量之前，从生物质中提取的乙醇和其他生物产物半纤维素的生产方法。 该过程可以与宿主植物过程相结合，以最小化提取半纤维素的能量损失。 还公开了从制浆操作中逐步酶分解纤维素纤维，其通过重新部署典型的现有纸浆和造纸厂中所含的设备和容器进行。 优选的原料是来自酸或碱性制浆过程或漂白阶段的高脱木素纸浆。

    METHODS AND SYSTEMS FOR ENZYMATIC HYDROLYSIS OF PRETREATED BIOMASS AT HIGH SOLIDS CONCENTRATIONS
    77.
    发明申请
    METHODS AND SYSTEMS FOR ENZYMATIC HYDROLYSIS OF PRETREATED BIOMASS AT HIGH SOLIDS CONCENTRATIONS 审中-公开

    公开(公告)号：US20190177755A1

    公开(公告)日：2019-06-13

    申请号：US16029929

    申请日：2018-07-09

    Applicant: API Intellectual Property Holdings, LLC

    Inventor： Theodora RETSINA ,  Ryan ZEBROSKI

    IPC: C12P19/02 ,  C12P19/14

    Abstract: A method of enzymatically hydrolyzing pretreated lignocellulosic biomass at high solids concentration includes introducing pretreated biomass to a hydrolysis reactor, to hydrolyze the cellulose to glucose monomer and glucose oligomers, and circulating a liquid stream, from which glucose is removed to reduce glucose inhibition of cellulose hydrolysis. A surfactant may be added to the hydrolysis reactor. Heat and/or acid treatment of the glucose oligomers may be used to generate additional glucose monomer. Some variations introduce pretreated biomass to a hydrolysis reactor to hydrolyze cellulose to glucose monomer and glucose oligomers, followed by conveying a portion of the solid phase to a mechanical refiner and/or a unit under reduced pressure, to generate a refined and/or exploded solid phase; and recycling the refined and/or exploded solid phase, optionally reheated, back to an input of the hydrolysis reactor.

Patent Agency Ranking