Cryogenic transport medium or cold storage material impurity removal method, regeneration method, purification method, cold storage air conditioner maintenance method, cold transport medium or cold storage material impurity removal device, regeneration device, cold storage air conditioning system

摘要

PPROBLEM TO BE SOLVED: To provide a method and an apparatus for removing impurities including a water-soluble inorganic salt contained in a cold transfer medium or a cold storage material from the cold transfer medium or the cold storage material containing an aqueous quaternary ammonium salt solution as a main ingredient. PSOLUTION: The method is provided for removing impurities including a water-soluble inorganic salt contained in a cold transfer medium or a cold storage material from the cold transfer medium or the cold storage material containing an aqueous quaternary ammonium salt solution as a main ingredient, the method comprising a two layer-separation step of separating the cold transfer medium or the cold storage material into two layers, namely, a light liquid layer having a small specific gravity containing a quaternary ammonium salt and a water layer having a large specific gravity containing a water-soluble inorganic salt, and a water layer-removing step of removing the water layer from the cold transfer medium or the cold storage material separated into two layers. PCOPYRIGHT: (C)2007,JPO&INPIT