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    • 7. 发明授权
    • Lyophilisation process in atmosphere of condensable gas
    • 冷凝气氛中的冻干过程
    • US3873745A
    • 1975-03-25
    • US33075573
    • 1973-02-08
    • NESTLE SA
    • REY LOUISBOULDOIRES JEAN-PIERREROVERO DOMINIQUE
    • A23F3/06A23F3/26A23F5/48A23L3/44A23L27/10A23L3/36
    • A23L3/44A23F3/06A23F3/26A23F5/486A23L27/115
    • A process for the separation of a solvent from a substance in solution or in suspension in this solvent, or containing this solvent, comprising solidifying the solvent and then separating it from the substance by sublimation at reduced pressure in a lyophilisation chamber, in which an atmosphere is created within the chamber consisting essentially of a gaseous medium capable of existing in condensed state at a temperature above -196*C and of having at that temperature a saturated vapour pressure not exceeding 2 torrs, the medium is then condensed on a cooled surface the temperature of which is such that the saturated vapour pressure of the medium does not exceed 2 torrs, and the solvent is then separated from the substance by sublimation and is condensed on the cooled surface.
    • 一种溶剂从溶液中或在该溶剂中或悬浮于该溶剂中的物质分离的方法,或含有该溶剂的方法,包括使溶剂固化,然后在减压室中通过在冷冻干燥室中升华而与物质分离,其中气氛 在室内形成,其基本上由能够在-196℃以上的冷凝态存在的气体介质组成,并且在该温度下具有不超过2托的饱和蒸汽压,然后将介质在冷却的表面上冷凝 其温度使得介质的饱和蒸气压不超过2托,然后通过升华将溶剂与物质分离,并在冷却的表面上冷凝。