Method for the production of riboflavin of modification b/c in granular form
    4.
    发明授权
    Method for the production of riboflavin of modification b/c in granular form 失效
    用于生产颗粒形式的改性b / c的核黄素的方法

    公开(公告)号:US07329748B2

    公开(公告)日:2008-02-12

    申请号:US10552137

    申请日:2004-04-07

    IPC分类号: C07D487/04

    CPC分类号: C07D475/14 A23L33/15

    摘要: The present invention relates to an improved process for preparing riboflavin of the B/C modification in granule form. Furthermore, the invention relates to the riboflavin preparation process wherein riboflavin of the A modification is (a) dissolved in aqueous mineral acid without treating the resulting riboflavin solution with activated carbon, (b) precipitated directly afterwards, steps (a) and (b) being carried out at a temperature in the range from 5 to 15° C., and (c) dried by fluidized bed granulation; and wherein the riboflavin does not come into contact with the aqueous mineral acid solvent for longer than on average 4 hours.

    摘要翻译: 本发明涉及一种制备颗粒形式的B / C改性核黄素的改进方法。 此外,本发明涉及核黄素制备方法,其中A修饰的核黄素是(a)溶解在无机酸水溶液中,而不用活性炭处理所得的核黄素溶液,(b)直接沉淀,步骤(a)和(b) 在5至15℃的温度下进行,(c)通过流化床造粒干燥; 并且其中所述核黄素不与无机酸水溶液接触长于平均4小时。

    Production of a zeolite-containing solid
    6.
    发明申请
    Production of a zeolite-containing solid 审中-公开
    制备含沸石的固体

    公开(公告)号:US20060183629A1

    公开(公告)日:2006-08-17

    申请号:US11044195

    申请日:2005-01-28

    IPC分类号: B01J29/04

    摘要: In a process for concentrating an at least partially crystalline solid containing at least one zeolite in a mixture comprising at least one auxiliary, for example a template compound, and said solid, the mixture is ultrafiltrated in a step (II) to divide the mixture into a retentate and a permeate, the solids content in the retentate being higher than that in the mixture and the solids content in the permeate being lower than that in the mixture. This procedure allows auxiliaries, in particular template compounds, present in the permeate to be recycled into a crystallizing step (I) upstream of step (II).

    摘要翻译: 在将包含至少一种沸石的至少部分结晶的固体在包含至少一种助剂例如模板化合物和所述固体的混合物中浓缩的方法中,在步骤(II)中将混合物超滤以将混合物分成 渗余物和渗透物,渗余物中的固体含量高于混合物中的固体含量,并且渗透物中的固体含量低于混合物中的固体含量。 该方法允许存在于渗透物中的助剂,特别是模板化合物再循环到步骤(II)上游的结晶步骤(I)中。