发明名称 |
HIGH PURIFICATION OF 1,1,1,2-TETRA-FLUOROMETHANE |
摘要 |
The fine purification method for 1,1,1,2-tetrafluoroethane(HFC-134a) consists of the steps of; (a) separating the top flux of the distillation tower for HFC-134a; (b) neutralizing and drying; (c) removing hydrogen fluorine(HF); (d) removing water from the bottom flux of the distillation tower by drying. The HFC-134a contains no more than 100 ppm of HF and water respectively.
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申请公布号 |
KR960008642(B1) |
申请公布日期 |
1996.06.28 |
申请号 |
KR19930026521 |
申请日期 |
1993.12.04 |
申请人 |
KIST |
发明人 |
KWON, YOUNG - SOO;AHN, BYUNG - SUNG;KIM, HONG - KON;LEE, SANG - DEUK;JUNG, MOON - JO |
分类号 |
C07C17/38;(IPC1-7):C07C19/08 |
主分类号 |
C07C17/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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