Method for separating 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, and method for producing 1-chloro-3,3,3-trifluoropropene by using same
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A separation method of 1-chloro-3,3,3-tetraluofopropene and hydrogen fluoride according to the present invention includes reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-tetrafluoropropene and hydrogen fluoride, thereby causing phase separation of the
A separation method of 1-chloro-3,3,3-tetraluofopropene and hydrogen fluoride according to the present invention includes reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-tetrafluoropropene and hydrogen fluoride, thereby causing phase separation of the mixture so as to obtain an upper phase predominantly containing the hydrogen fluoride and a lower phase predominantly containing the 1-chloro-3,3,3-tetrafluoropropene. This separation method is industrially economically advantageous since the 1-chloro-3,3,3-tetraluofopropene and the hydrogen fluoride can be separated rapidly by simple operation.
대표청구항▼
1. A separation method of 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, comprising: reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, thereby causing phase separation of the mixture so as to obtain an upp
1. A separation method of 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, comprising: reducing the hydrogen chloride content of a mixture containing hydrogen chloride, 1-chloro-3,3,3-trifluoropropene and hydrogen fluoride, thereby causing phase separation of the mixture so as to obtain an upper phase predominantly containing the hydrogen fluoride and a lower phase predominantly containing the 1-chloro-3,3,3-trifluoropropene. 2. The separation method according to claim 1, wherein the phase separation is conducted at a temperature of −50° C. to 100° C. 3. The separation method according to claim 1, wherein the phase separation is conducted at a pressure of 0.01 MPa to 2.1 MPa. 4. A method for production of 1-chloro-3,3,3-trifluoropropene, comprising: fluorinating 1,1,1,3,3-pentachlorpropane or 1,1,3,3-tetrachloro-2-propene with hydrogen fluoride, therby providing a mixture containing hydrogen fluoride as an unreacted reactant, 1-chloro-3,3,3-trifluoropropene as a reaction product and hydrogen chloride as a by-product;reducing the hydrogen chloride content of the mixture, thereby causing phase separation of the mixture so as to obtain an upper phase predominantly containing the hydrogen fluoride and a lower phase predominantly containing the 1-chloro-3,3,3-trifluorpropene; andpurifying the 1-chloro-3,3,3-trifluorpropene by bringing the lower phase into contact with water or an aqueous alkaline solution.
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이 특허에 인용된 특허 (5)
Wismer John A. ; Bolmer Michael S. ; Chen Bin, Azeotrope of HF and 1233zd.
Merkel, Daniel C.; Johnson, Robert; Tung, Hsueh Sung; Wang, Haiyou; Pokrovski, Konstantin A., Integrated process to co-produce trans-1-chloro-3,3,3-trifluoropropene and trans-1,3,3,3-tetrafluoropropene.
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