一种适用于较低三相点物质的冻干设备研究*

doi:10.13385/j.cnki.vacuum.2025.01.09

Abstract

Abstract: Vacuum freeze drying has been widely used. However, the temperature range of the current freeze-dryer is limited, which limits the application and development of freeze drying technology. An optimally designed vacuum freeze drying equipmengt is presented in this study, which broadens the operating range of temperature and vacuum degree. Toluene is freeze dried as a sample using this new designed equipment. The results show that the equipment can not only achieve the freeze-drying of toluene, but also significantly reduce the temperature difference of the sample in the vacuum process by introducing the metal sleeves, thereby avoiding the risk of sample melting and ensuring the smooth progress of the freeze-drying process. This research could provide a guidance for the freeze drying of low triple-point materials, and promote the popularization and application of vacuum freeze drying technology.

Key words: vacuum freeze drying, toluene, freeze-dryer, heat and mass transfer

CLC Number: TQ420.6⁺8

CHEN Changjie, LUO Chun. Investigation on Developing the Freeze-Dryer for Processing Products with Low Triple Point Temperature[J].VACUUM, 2025, 62(1): 57-61.

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Investigation on Developing the Freeze-Dryer for Processing Products with Low Triple Point Temperature

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