发明名称 |
REGENERATION OF HIGH-FLUORINATED CARBOXYLIC ACIDS FROM GASEOUS PHASE |
摘要 |
chemical technology. SUBSTANCE: invention relates to a method of regeneration of high-fluorinated carboxylic acids from flows of exhausting gases. Exhausting gas is contacted with potassium carbonate-containing alkaline washing out solution with density above 1.15 g/cm3 and separation of high-fluorinated carboxylic acid salt as a separate phase since in taken concentration perfluorocarboxylic acid potassium salt is insoluble in potassium carbonate solution followed by preparing high-fluorinated carboxylic acid from its. The preferable density value of washing solution is 1.2-1.4 g/cm3. Method provides the isolation of pure high-fluorinated carboxylic acids without loss and deposit formation in the prolonged exploitation of washing column. EFFECT: improved method of regeneration. 1 ex
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申请公布号 |
RU2187495(C2) |
申请公布日期 |
2002.08.20 |
申请号 |
RU19990104514 |
申请日期 |
1997.07.30 |
申请人 |
DINEON GMBKH;E.I.DJUPON DE NEMUR EHND KOMPANI |
发明人 |
GRASBERGER RAJNER;ZUL'TSBAKH RAJNKHARD AL'BERT;BRANDENBURG RIK A. |
分类号 |
B01D53/70;B01D53/34;B01D53/77;C07C51/41;C07C51/42;C07C51/487;C07C53/21;(IPC1-7):C07C51/42 |
主分类号 |
B01D53/70 |
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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