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    • 38. 发明申请
    • IMPROVEMENTS IN AND RELATING TO GLASS CONDENSERS
    • 玻璃冷凝器的改进和相关
    • WO2004039472A1
    • 2004-05-13
    • PCT/GB2003/004666
    • 2003-10-29
    • GENEVAC LTDLEE-SMITH, RogerSHERWEN, MichaelGUTHRIE, DuncanBROOKS, TrevorSMITH, Richard
    • LEE-SMITH, RogerSHERWEN, MichaelGUTHRIE, DuncanBROOKS, TrevorSMITH, Richard
    • B01D5/00
    • B01D5/009B01D5/0096B01D7/02
    • Methods of preventing damage to a glass vessel forming part of or comprising a condenser, in which the vessel is chilled prior to and during a condensing step and in which in use solid condensed solvent collects on the inside of the vessel and is allowed to defrost and melt after the condensing step, and the liquid is drained from the glass vessel before the latter is chilled again. In one method, during the defrosting and drainage step the temperature of the vessel is maintained above the freezing temperature of the condensate to prevent the liquid re-freezing before it has drained from the vessel. Apparatus for performing the method includes a temperature sensitive control system which prevents the temperature of the glass vessel from dropping sufficiently to allow the liquid to re-freeze before all the liquid has drained from the vessel. In another method any increase in volume due to unwanted freezing is accommodated by a variable volume device. This may comprise a variable volume reservoir, typically a resiliently expansible chamber, into which liquid formed by any defrosting of the frozen solvent at an intermediate point in, or at the end of, an evaporation process, and collected in the glass condensing vessel, can expand if upper layers of the liquid in the vessel freeze over and thereby trap the remaining liquid therebelow. Alternatively a resiliently collapsible closed capsule is provided within the glass condensing vessel, in a region in which liquid will collect if the frozen condensate defrosts, and which in practice will be the last of the region to freeze, and wherein as the pressure in liquid below any upper freezing layer increases, the capsule will collapse (implode) under any increasing liquid pressure so as to decrease its volume and thereby increase the volume available to the liquid trapped below the freezing layer.
    • 防止形成冷凝器的一部分或包括冷凝器的玻璃容器的损坏的方法,其中容器在冷凝步骤之前和期间被冷冻,并且其中使用中的固体冷凝溶剂聚集在容器的内部并被允许除霜 在冷凝步骤后熔化,并且液体在玻璃容器再次冷却之前被排出。 在一种方法中,在除霜和排水步骤期间,容器的温度保持在冷凝物的冷冻温度以上,以防止液体在从容器排出之前再次冷冻。 用于执行该方法的装置包括温度敏感控制系统,其防止玻璃容器的温度充分滴落,以在所有液体从容器排出之前使液体重新冷冻。 在另一种方法中,由于不想要的冷冻而导致的体积增加由可变体积装置来适应。 这可以包括可变容积的储存器,通常是弹性可膨胀的室,通过在蒸发过程中或在蒸发过程的中间点对冷冻溶剂进行任何除霜形成的液体,并且收集在玻璃冷凝容器中, 如果容器中的液体的上层冻结,从而捕获其中的剩余液体,则膨胀。 或者,在玻璃冷凝容器内设置弹性可收缩的封闭胶囊,如果冻结的冷凝物除霜,液体将在其中收集,并且实际上将是最后一个冻结区域,并且其中作为下面液体中的压力 任何上部冷冻层增加时,胶囊将在任何增加的液体压力下崩溃(内爆),从而减小其体积,从而增加被捕获在冷冻层下面的液体的体积。