DESICCANT FOR REFRIGERATION CYCLE AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To provide a desiccant for refrigeration cycle, having excellent dehydration performance as a desiccant for a refrigerant for refrigeration cycle containing HFC-32, capable of suppressing the generation of a fluorine compound caused by the decomposition of HFC-32 for a long period and widely applicable to various fluorocarbon refrigerants and provide its production process. SOLUTION: This desiccant for refrigeration cycle is composed of a zeolite A containing at least Na and K as metallic cation and a high-purity kaolin clay and having a fluorine (F) ion concentration of <=2.0×10<3> ppm in the desiccant after the shield tube test using a CFCs substitute comprising a hydrofluorocarbon(HFC) at least containing difluoromethane (HFC-32). The invention also relates to its production process.