Environment-friendly chlorofluorocarbon-free refrigerant and preparation method thereof

Abstract

The invention provides an environment-friendly chlorofluorocarbon-free refrigerant and a preparation method thereof. The refrigerant is prepared from propane, propylene, cyclobutane, 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene, trifluoromethyl iodide, pentafluoromethyl iodide, difluoromethane, tetrahydrothiophene, liquid carbon dioxide and cryogenic lubricant. The refrigerant has the beneficial effects that the ODP value is zero, the ozone sphere cannot be destroyed if the refrigerant is used for a long time; the GWP value of raw materials is low, and the working pressure of the refrigerant is equivalent to that of R22, so that an existing refrigeration system need not to be modified, the production cost can be reduced, while the refrigeration effect is not reduced; the refrigerant has the effects of inhibiting combustion and explosion, so that the combustibility of the refrigerant can be reduced, and the safety can be improved; the lubricant can seep into each part of a compressor together with the refrigerant so as to create an excellent condition for engine lubrication; tetrahydrothiophene is easily dissolved in difluoromethane and has a strong unpleasant smell, so that when the refrigerant leaks, a user can feel leakage of the refrigerant at the first time and carries out corresponding measures, so that property and safety of people can be protected.

Description

technical field [0001] The invention relates to the field of refrigerants, and more specifically relates to a green, environment-friendly and fluorine-free refrigerant and a preparation method thereof. Background technique [0002] Global warming potential (GWP), which is an important parameter of refrigerants, is defined as the climate warming potential of greenhouse gases relative to carbon dioxide. The official global warming potential (GWP) is calculated this way: the warming capacity of a kilogram of gas relative to a kilogram of carbon dioxide over a hundred years. The official GWP chart is published in the Second Assessment Report adopted by the Intergovernmental Panel on Climate Change (1995 IPCC GWP values). More accurate GWP values ​​published in the latest IPCC assessment report, more environmentally friendly fluids, in some cases involving suitable replacement for existing refrigerants with higher global warming potential (such as R410A, R134a, R407C and R404A)...

AI Technical Summary

Problems solved by technology

[0004] Tetrafluoroethane (R134a) can be used in many fields using R22, but because the use of this product sometimes requires a change in equipment design, so not only the cost of the product itself is high, but also the cost of the entire refrigeration equipment increases, which is a great waste resources, the future development trend will also be eliminated

However, the refrigerant has always had the problem of high cost in practical application, so its popularization and application has been limited.

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