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58 条记录 (耗时 0.038 秒)

    Enhanced membrane separation of monosaccharides utilizing concentration polarization
    1.
    发明授权
    Enhanced membrane separation of monosaccharides utilizing concentration polarization 失效
    利用浓度极化增强单糖分离

    公开(公告)号：US5008189A

    公开(公告)日：1991-04-16

    申请号：US369433

    申请日：1989-06-20

    申请人： Anil R. Oroskar ,  James L. Johnson

    发明人： Anil R. Oroskar ,  James L. Johnson

    IPC分类号： B01D61/14 ,  B01D65/08 ,  C12P19/20

    CPC分类号： B01D61/145 ,  B01D65/08 ,  C12P19/20 ,  B01D2321/166 ,  Y10S435/803

    摘要： Membrane separation of monosaccharides from an aqueous solution containing higher saccharides and saccharifying enzyme is considerably improved when the separation is performed under conditions where the polarization modulus for the enzyme is between 10 and 1,000, especially when the latter is between 50 and 500. A process utilizing this constraint affords a considerable savings in enzyme residence time and enzyme usage, and permits glucose of at least 94% purity to be prepared using membranes with a molecular weight cutoff as high as 70,000 with partial saccharification of thinned starch to give glucose levels in the range of 65-90%.

    摘要翻译： 当分离在酶的偏振模数在10和1000之间的条件下进行时，特别是当后者在50和500之间时，从含有较高糖和糖化酶的水溶液中分离单糖的膜分离显着改善。 这种约束使酶停留时间和酶的用量大大节省，并允许使用分子量截留值高达70,000的膜制备纯度至少为94％的葡萄糖，通过部分糖化稀释淀粉使葡萄糖水平在范围内 为65-90％。

    Tagatose production using simulated moving bed separation
    2.
    发明授权
    Tagatose production using simulated moving bed separation 有权
    使用模拟移动床分离的塔格斯生产

    公开(公告)号：US08802843B2

    公开(公告)日：2014-08-12

    申请号：US13506889

    申请日：2012-05-22

    申请人： Anil R. Oroskar ,  Omkar M. Kulkarni ,  David W. House ,  Deepak Sharma ,  Rakesh Vikraman Nair Rema

    发明人： Anil R. Oroskar ,  Omkar M. Kulkarni ,  David W. House ,  Deepak Sharma ,  Rakesh Vikraman Nair Rema

    IPC分类号： C07H1/06 ,  C07H1/08

    CPC分类号： C13K13/00 ,  B01D15/185 ,  B01D15/365 ,  B01J39/05 ,  B01J39/26 ,  B01J47/022 ,  C13K1/00

    摘要： Disclosed is a process for the production of d-tagatose from lactose after acid hydrolysis to provide a hydrolysate having 1 equiv of d-glucose and 1 equiv of d-galactose for each unit of lactose converted. More particularly, the invention relates to a process for the isomerization of d-galactose to d-tagatose and the use of a simplified separation scheme based on simulated moving bed (SMB) separation. The isomerization of d-galactose to d-tagatose is carried out in the presence of calcium oxide or calcium hydroxide. The process is useful for providing a simplified processing route to providing pure d-tagatose and glucose as two products from lactose hydrolysate. In an alternate embodiment, a process is disclosed for the production of d-tagatose from fermented lactose hydrolysate to provide a crystallized d-tagatose product. D-tagatose is useful as a food additive, as a sweetener, as a texturizer, as a stabilizer, or as a humectant.

    摘要翻译： 公开了一种在酸水解之后从乳糖生产d-塔格糖的方法，以提供具有1当量的D-葡萄糖和1当量的D-半乳糖的水解产物，用于每单位转化的乳糖。 更具体地，本发明涉及将D-半乳糖异构化为d-塔格糖的方法，以及使用基于模拟移动床（SMB）分离的简化分离方案。 D-半乳糖与D-塔格糖的异构化在氧化钙或氢氧化钙的存在下进行。 该方法可用于提供简单的处理途径以从乳糖水解产物中提供纯的d-塔格糖和葡萄糖作为两种产物。 在替代实施方案中，公开了用于从发酵乳糖水解产物生产d-塔格糖的方法，以提供结晶的d-塔格糖产品。 D-塔格糖可用作食品添加剂，甜味剂，增白剂，稳定剂，或作为保湿剂。

    Turbulent bed solid catalyst hydrocarbon alkylation process
    8.
    发明授权
    Turbulent bed solid catalyst hydrocarbon alkylation process 失效
    湍流床固体催化剂烃烷基化方法

    公开(公告)号：US5856606A

    公开(公告)日：1999-01-05

    申请号：US723207

    申请日：1996-09-27

    申请人： Anil R. Oroskar

    发明人： Anil R. Oroskar

    IPC分类号： C07C2/58 ,  C07C2/66 ,  C07C2/64 ,  C07C2/56

    CPC分类号： C07C2/58 ,  C07C2/66

    摘要： Paraffins or other hydrocarbons are alkylated in a process featuring a reaction zone containing a pool of liquid maintained at its boiling point and containing a suspended solid catalyst, which allows the heat of reaction to vaporize a portion of the liquid phase feed hydrocarbon. The vapor phase withdrawn from the top of the reaction zone is at least partially recycled to the reaction zone either as vapor or liquid. The feed hydrocarbons are introduced to the bottom of the reaction zone as a vapor phase stream, which may contain hydrogen. The catalyst is suspended within the liquid in the reaction zone.

    摘要翻译： 石蜡或其他烃在具有包含保持在其沸点并含有悬浮固体催化剂的液体池的反应区的过程中烷基化，其允许反应热量蒸发一部分液相进料烃。 从反应区顶部排出的气相至少部分地以蒸气或液体的方式再循环到反应区。 原料烃以可能含有氢的气相物流引入反应区的底部。 催化剂悬浮在反应区内的液体中。

    Metal cation-modified alkylation catalysts
    9.
    发明授权
    Metal cation-modified alkylation catalysts 失效
    金属阳离子改性烷基化催化剂

    公开(公告)号：US5849977A

    公开(公告)日：1998-12-15

    申请号：US630318

    申请日：1996-04-10

    申请人： Joseph A. Kocal ,  Anil R. Oroskar

    发明人： Joseph A. Kocal ,  Anil R. Oroskar

    IPC分类号： B01J23/02 ,  B01J23/04 ,  B01J27/08 ,  C07C2/58

    CPC分类号： B01J23/02 ,  B01J23/04 ,  B01J27/08 ,  C07C2/58 ,  C07C2521/02 ,  C07C2521/04 ,  C07C2521/06 ,  C07C2521/12 ,  C07C2523/42 ,  C07C2523/44 ,  C07C2523/46 ,  C07C2523/755 ,  C07C2527/125 ,  C07C2527/126

    摘要： A process for the alkylation of alkenes having from 2 to 6 carbon atoms with an alkane having from 4 to 6 carbon atoms to afford an alkylate comprises reacting in the liquid phase the alkene and alkane under alkylation conditions in the presence of a novel catalyst comprising: a) a refractory inorganic oxide, b) the reaction product of a first metal halide and bound surface hydroxyl groups of the refractory inorganic oxide, c) a second metal cation, and d) optionally a zerovalent third metal. The refractory inorganic oxide is selected form the group consisting of alumina, titania, zirconia, chromia, silica, boria, silica-alumina, and combinations thereof and the first metal halide is a fluoride, chloride, or bromide of aluminum or boron. The second metal cation is selected from the group consisting of: monovalent metal cations in an amount from 0.0026 up to about 0.20 gram atoms per 100 grams refractory inorganic oxide for lithium, potassium, cesium, rubidium, silver, and copper, and from 0.012 to about 0.12 gram atoms for sodium; and alkaline earth metal cations in an amount from about 0.0013 up to about 0.01 gram atoms per 100 grams of refractory inorganic oxide for beryllium, strontium, and barium, and in an amount from about 0.004 up to about 0.1 gram atoms per 100 grams support for magnesium and calcium, or combinations thereof. The third metal is selected from the group consisting of platinum, palladium, nickel ruthenium, rhodium, osmium and iridium, and any combination thereof.

    摘要翻译： 具有2至6个碳原子的烯烃与具有4至6个碳原子的烷烃烷基化以得到烷基化物的方法包括在烷烃化反应条件下在液相中在烯烃和烷烃的存在下，在新催化剂下反应的方法包括： a）耐火无机氧化物，b）第一金属卤化物与耐火无机氧化物的结合表面羟基的反应产物，c）第二金属阳离子，和d）任选的零价第三金属。 耐火无机氧化物选自氧化铝，二氧化钛，氧化锆，氧化铬，二氧化硅，氧化硼，二氧化硅 - 氧化铝及其组合，第一金属卤化物是铝或硼的氟化物，氯化物或溴化物。 第二金属阳离子选自：一价金属阳离子，其量为0.0026至约0.20克原子/ 100克锂，钾，铯，铷，银和铜的耐火无机氧化物，并且0.012至 约0.12克原子钠; 和碱土金属阳离子，其量为约0.0013至约0.01克原子/ 100克铍，锶和钡的耐火无机氧化物，其量为约0.004至约0.1克原子/ 100克载体 镁和钙，或其组合。 第三种金属选自铂，钯，镍钌，铑，锇和铱，以及它们的任何组合。