基本信息:
- 专利标题： 1,1,1,2-테트라플루오로에탄의 정제방법
- 专利标题（英）：KR940005531A - Purification of 1,1,1,2-tetrafluoro-ethane in
- 申请号：KR1019930008270 申请日：1993-05-14
- 公开(公告)号：KR1019940005531A 公开(公告)日：1994-03-21
- 发明人： 오노히로모토 , 아라이다쓰하루 , 가타무라고이치 , 유게사다요시 , 가와이하루유키 , 모리토야스아키
- 申请人： 쇼와 덴코 가부시키가이샤
- 申请人地址： **-*, Shibadaimon *-chome, Minato-ku, Tokyo ***-****, Japan
- 专利权人： 쇼와 덴코 가부시키가이샤
- 当前专利权人： 쇼와 덴코 가부시키가이샤
- 当前专利权人地址： **-*, Shibadaimon *-chome, Minato-ku, Tokyo ***-****, Japan
- 代理人： 이병호
- 优先权： JP92-221833 1992-08-20
- 主分类号： C07C19/08
- IPC分类号： C07C19/08
정제방법에 따라 소량의 HF를 함유하는 1,1,1,2-테트라플루오로에탄으로부터 HF를 경제적으로 회수할수 있다.
The invention HF- containing, by contacting a 1,1,1,2-tetrafluoro-dihydro-fluoro or more HF concentration in the ethane concentration to separate a solvent extraction and concentration of water -HF azeotropic points in the acid and the low-temperature and two-phase separation, and it characterized in that the recovery of ethane, 1,1,1,2-tetrafluoroethane from the separated lower phase, containing 1 HF- obtained for the trichlorethylene HF and the resulting reaction product through a distillation step sikimeuroseo concentrated , as a 1,1,2-tetrafluoroethane from the ethane fraction was concentrated to a method for the purification of 1,1,1,2-tetrafluoro-ethane in, wherein the concentration of hydrofluoric acid is used as the extraction solvent is 38 to 70 the wt.%, the extraction and two-phase separation step is performed at a temperature of -35 to 35 ℃. It can be economically recovered in a HF ethane 1,1,1,2-tetrafluoroethane containing a small amount of HF in accordance with the purification method.
公开/授权文献:
- KR100288458B1 1,1,1,2-테트라플루오로에탄의 정제방법 公开/授权日：2001-05-02