Method of separation into three components using a simulated moving bed
    27.
    发明授权
    Method of separation into three components using a simulated moving bed 失效
    使用模拟移动床分离成三个组分的方法

    公开(公告)号:US5556546A

    公开(公告)日:1996-09-17

    申请号:US362927

    申请日:1994-12-23

    摘要: The method of chromatographic separation comprises: a feed-withdrawal step in which, with liquid flow being permitted from the first to the third unit beds in the simulated moving bed, an eluant is fed into the first unit bed and the feed stock is fed into the third unit bed while, at the same time, part of the effluent from the first unit bed is withdrawn from the system as a fraction rich in component B and the effluent from the third unit bed is withdrawn from the system as a fraction rich in component C; a circulation stage in which, with liquid circulation being permitted through the simulated moving bed, the liquid in the simulated moving bed is moved downstream without liquid feed to or withdrawal from the simulated moving bed; and a withdrawal stage in which, with liquid flow being permitted from the second to the first unit beds, the eluant is fed to the second unit bed and the effluent from the first unit bed is withdrawn from the system as a fraction rich in component A; wherein, after the above three stages are performed, the same stages are repeated except that feed stock and eluant are fed to, and effluents are withdrawn from unit beds which exist immediately downstream of the respective corresponding unit beds.

    摘要翻译: 色谱分离方法包括:进料提取步骤,其中,在模拟移动床中从第一至第三单元床允许液体流动的同时,将洗脱液送入第一单元床,并将原料进料至 第三单元床,同时来自第一单元床的部分流出物作为富含组分B的馏分从系统中排出,并且来自第三单元床的流出物作为富含馏分的馏分从系统中排出 组分C; 循环阶段,其中通过模拟移动床允许液体循环,模拟移动床中的液体向下游移动,而不进行液体馈送或从模拟移动床退出; 以及取出阶段,其中从第二单元床到第一单元床允许液体流动,将洗脱液进料到第二单元床,并且来自第一单元床的流出物作为富含组分A的馏分从系统中排出 ; 其中,在执行上述三个阶段之后,重复进行相同的步骤,除了将原料和洗脱剂进料到,并且从相应的相应单元床的紧下游存在的单元床中排出流出物。

    Method of chromatographic separation
    28.
    发明授权
    Method of chromatographic separation 失效
    色谱分离方法

    公开(公告)号:US4970002A

    公开(公告)日:1990-11-13

    申请号:US336516

    申请日:1989-04-11

    CPC分类号: B01D15/1814

    摘要: A chromatographic separation process employing fewer beds packed with an adsorbent, while enabling separation of feedstock fluid, containing a plurality of components which have different degrees of affinity for the adsorbent, into constituent fractions which are withdrawn separately. According to at least one preferred embodiment, a step of supplying feedstock fluid to the simplified separation apparatus is preceded and followed by a step of circulating the fluid through the apparatus, a cycle of supply-desorbing-circulation being carried out repeatedly.

    Method for purification of saccharide
    30.
    发明授权
    Method for purification of saccharide 失效
    糖的纯化方法

    公开(公告)号:US06548662B1

    公开(公告)日:2003-04-15

    申请号:US09693373

    申请日:2000-10-19

    IPC分类号: C07H106

    CPC分类号: C07H1/06

    摘要: Disclosed herein is a method for the purification of a saccharide, characterized in that, water and a feedstock solution containing at least L-arabinose and oligosaccharide where L-arabinose and/or xylose are/is the constituting component(s) obtained by hydrolysis of plant tissues are supplied to a chromatographic apparatus of a simulated moving-bed system where a solution can be circulated in one direction in an apparatus equipped with a packed bed in which an adsorbent is filled and the solution in the packed bed is moved in one direction whereupon at least L-arabinose and oligosaccharide are separated each other and concentration distribution of each of them is formed in the packed bed, then at least a concentrated L-arabinose solution and a concentrated oligosaccharide solution are extracted from the packed bed and, in addition, an inlet for the feedstock solution, an inlet for water, an outlet for the concentrated L-arabinose solution and an outlet for the concentrated oligosaccharide solution are successively shifted to the downstream inlets or outlets along the flowing direction of the solution.

    摘要翻译: 本文公开了一种纯化糖的方法,其特征在于,水和至少含有L-阿拉伯糖和寡糖的原料溶液,其中L-阿拉伯糖和/或木糖是通过水解得到的构成成分 将植物组织供给到模拟移动床系统的色谱装置中,其中溶液可以在装有填充床的装置中在一个方向上循环,其中填充有吸附剂,并且填充床中的溶液在一个方向上移动 因此至少将L-阿拉伯糖和寡糖分开,并在填充床中形成各自的浓度分布,然后从填充床中提取至少浓缩的L-阿拉伯糖溶液和浓缩的寡糖溶液,另外 ,原料溶液的入口,水的入口,浓缩的L-阿拉伯糖溶液的出口和浓缩的寡糖的出口 沿着溶液的流动方向依次移动到下游入口或出口。