As the most widely used medium and low temperature refrigerant today, R22 refrigerant
is mainly used in household air conditioners, commercial air conditioners, central air conditioners, mobile air conditioners, heat pump water heaters, dehumidifiers, refrigeration dryers, cold storage, food refrigeration equipment, marine refrigeration equipment, Industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display cabinets and other refrigeration equipment. Difluorochloromethane can also be used as the raw material for the production of polytetrafluoroethylene resin and the intermediate of fire extinguishing agent 1121, as well as as a physical foaming agent for polymers (plastics); for reciprocating compressors, as industrial, commercial, and household Refrigerant for air-conditioning system; it can also be used as aerosol spray agent for pesticides and spray paint, and it can also be used to produce fire extinguishing agent 1211; it is the basic raw material for the production of various fluorine-containing polymer compounds.
R22 belongs to the HCFC refrigerant. According to the Montreal Protocol, it will be completely phased out before 2030. The main environmentally friendly substitutes in the later period: R404A
, R290, R23
, R407C, R411A, R417A, R1270. Major manufacturers: Domestic manufacturers mainly include Quzhou Juhua Group, Shandong Dongyue Group, Zhejiang Meilan Chemical, Sanaifu, etc. Major international brands: DuPont, Honeywell, Arkema, etc. However, because developed countries have already phased out R22 refrigerant
in advance, the production of this product is no longer allowed in their own countries, so the so-called imported R22 sold on the market is actually domestic OEM production.
With the further improvement of global environmental awareness, many developed countries have accelerated the pace of R22 refrigerant replacement. The United States, Japan, and Canada stipulated that R22 refrigerant was banned in 2010, and the European Community stipulated that it should be before 2015. At present, the internationally optimistic substitutes for R22 refrigerant
are R407C refrigerant and R410A refrigerant. Among them, R410A refrigerant is a near azeotropic mixture with small temperature slip, which is an ideal substitute for R22 refrigerant. In the United States and Japan, R410A refrigerant has become the main substitute for R22 refrigerant in room air-conditioning and combined air-conditioning systems, and domestic R22 refrigerant is still in the transitional stage.