The latest R22 refrigerant application and service life regulations

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, refrigerated dryers, cold storage, food refrigeration equipment, and marine use Refrigeration equipment, industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display cabinets and other refrigeration equipment. Difluoromonochloromethane can also be used as a raw material for the production of polytetrafluoroethylene resin and an intermediate for fire extinguishing agent 1121, as well as a physical foaming agent for polymers (plastics); used in reciprocating compressors, as industrial, commercial, and household Refrigerant for air-conditioning system; it can also be used as aerosol spray agent for insecticide 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 is a 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, r410a, R290, R23, R407C, R411A, R417A, R1270. Major manufacturers: Domestic manufacturers mainly include Quzhou 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, they are no longer allowed to produce this product 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 The community is stipulated to 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.

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