FIELD: chemistry.
SUBSTANCE: invention relates to an azeotropic composition or a composition close to azeotropic for producing 2,3,3,3-tetrafluoropropene (HFC-1234yf), containing approximately 64.6-92.4 mol % HFC-1234yf and approximately 35.4-7.6 mol % hydrogen fluoride. The invention also relates to a method of separating HFC-1234yf from HFC-245cb, a method of extracting HFC-123yf from a mixture containing an HFC-1234yf azeotropic composition or a composition close to azeotropic and hydrogen fluoride, a method of extracting HFC-1234yf from a mixture of HFC-1234yf, HFC-245cb and hydrogen fluoride and a method of producing HFC-1234yf.
EFFECT: obtaining pure HFC-1234yf.
19 cl, 2 dwg, 11 tbl, 11 ex
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RU2466978C2 |
