| 摘要: |
| 氟利昂与制冷机油（或溶剂油）一起组成的制冷介质中，常常含有空气、水分、酸份等微量杂质。微量杂质的存在常常导致制冷系统无法正常进行。为此，制冷系统一般采用硅胶、活性氧化铝、分子筛、活性炭等干燥剂来净化回路中的水分、酸份等污染物。随着氟利昂制冷剂的不断更新，对相应的干燥剂的性能也提出更高的要求。通过详细介绍制冷系统中氟利昂干燥剂的不同制备方法并比较它们的优缺点，提出干燥剂的研究开发主要应从两个方向努力：一是提高产品的性能，尤其是相容性和吸水能力；另一方面是简化工艺，降低成本。分子筛具有均一孔径、高比表面积以及选择性吸附等性能，是氟利昂制冷剂最理想的干燥剂材料。加强对分子筛的改性和成型工艺研究，是逐步解决氟利昂制冷介质干燥的主要途径。 |
| 关键词: 热工学 干燥剂 综述 氟利昂 制备 |
| DOI： |
| 修订日期：2006-08-11
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| 基金项目: |
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| Progress on Preparation of Desiccants Used in Refrigerant System |
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| Abstract: |
| The desiccants such as silica gel,active alumina,active carbon,and molecular sieve,are employed to purify the contaminations in the refrigerant system.With the development of new refrigerants,the properties of desiccants need to be improved.Based on the analysis on the different preparations of the desiccants,the following two concepts were presented:(1) to increase water capacity and compatibility with the refrigerants or the refrigeration oil;(2) to simplify the techniques and to reduce the cost.Because of homogeneous aperture of the molecule structure,high specific surface area,and selectivity adsorption,the molecular sieve desiccant is the most applicable desiccant material.It is necessary for us to study the molecular sieve desiccant preparation techniques and the modification of the molecular sieve. |
| Key words: Pyrology,Desiccants,Review,Freon,Preparation |
