Generation of boron-trifluoride and sulphuric acid from boron trifluoride hydrate
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United States of America Patent
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Nov 4, 2003
Grant Date -
Aug 7, 2003
app pub date -
Dec 8, 1998
filing date -
Dec 8, 1997
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Abstract
The invention relates to the preparation of BF.sub.3 and H.sub.2 SO.sub.4 of commercial grade from boron trifluoride hydrate effluents containing organic impurities. The process consists essentially in reacting the said effluent with oleum, in recovering the gaseous boron trifluoride thereby liberated and in subjecting the sulphuric acid by-product to treatment with hydrogen peroxide and to purging with air.
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