R22 has good stability to metal, no corrosion. However, when R22 contains water, copper plating is easy to occur. R22 has a certain erosive sealing material for natural rubber and plastic organic materials. Chloroethanol rubber can be used.
Chemical name: difluorochloromethane
CAS no. : 75-45-6
Molecular formula: CHClF2
Molecular weight: 86.47
Boiling point: -40.8 ℃
Relative density (30℃), liquid, 1.174 g/cm3
Melting point: -160.00 ℃
Critical temperature: 96.2 ℃
The critical pressure is 4.99mpa
Ozone layer destruction potential value (ODP) 0.055
Global warming coefficient (GWP) 1700
Specific heat of liquid 30℃, [KJ/(Kg·℃)] 0.31
Saturated liquid density 30℃, (g/cm3) 1.174
Isobaric steam specific heat (Cp), 30℃ and 101.3kPa[KJ/(Kg·℃)] 0.16
Molecular critical density, g/cm3 0.526
Evaporation potential at boiling point, KJ/Kg 233.5
The main purpose
R - 22 as the most widely used today in the low temperature refrigerants, mainly used in household air conditioner, commercial air conditioning, central air conditioning, mobile air conditioning, heat pump water heater, dehumidifier, frozen type dryer, cold storage, food refrigeration equipment, refrigeration equipment, Marine industrial refrigeration, commercial refrigeration, refrigeration condensing units, supermarket display cabinets and other refrigeration equipment. Difluorochloromethane can also be used as a raw material for the production of polytetrafluoroethylene resins and as an intermediate of fire extinguishing agent 1121, as well as as a physical foaming agent for polymers (plastics).
Used for reciprocating compressors, as refrigerant for industrial, commercial and domestic air conditioning systems; Can also be used as insecticide and spray spray aerosol spray agent, can also be used to produce fire extinguishing agent; It is the basic raw material for the production of various fluorinated polymer compounds.
R22 is an HCFC refrigerant that will be phased out by 2030 under the Montreal Protocol.
Main environmental alternatives: R404A,R410A, R290, R23, R407C, R411A, R417A, R1270.
Main manufacturers: domestic manufacturers are quzhou Juhua Group, Shandong Dongyue Group, Zhejiang Meilan Chemical, sanaifu, etc.
Main international brands: Dupont, Honeywell, Arkema and so on. However, as developed countries have already eliminated R22 in advance and are not allowed to produce this product in their own countries, the so-called imported R22 sold in the market are actually domestic OEM production.
Generally used for air conditioning or double machine overlapping level, as a high temperature end refrigerant, refrigeration strength is greater than the general refrigerant.
R22 is a member of the Freon family of hydrochlorofluorocarbons.
Freon definition, freon is saturated hydrocarbon (hydrocarbon) halogen derivatives of the general name, is this century 30's with the development of the chemical industry and a class of refrigerant, its emergence to solve the refrigeration air conditioning sector for refrigerant. From the definition of freon can be seen, now people say that non-freon R134a, R410A and R407C are actually freon.
Freon can destroy the ozone layer because of the presence of chlorine element (Cl) in refrigerants, and with the increase of the number of chlorine atoms, the ozone layer damage ability increased, with the increase of hydrogen element content, ozone layer damage ability decreased; The greenhouse effect is mainly caused by the large amount of greenhouse gases, such as CO2, generated in the process of slow oxidation and decomposition of refrigerant.
