Method for separating and recovering boron trifluoride

Details Method for separating and recovering boron trifluoride Method for separating and recovering boron trifluoride

1997-02-13

1998-12-08

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210660, 423293, 585823, B01D 1500

Patent

active

058464298

ABSTRACT:
A method for effectively separating and removing or recovering BF.sub.3 existing in a liquid hydrocarbon which is characterized in that an organic liquid mixture containing suspended or dissolved BF.sub.3 is brought into liquid phase contact with a synthetic polymer fiber containing nitrile groups at a temperature of 50.degree. C. or lower, so that the BF.sub.3 is adsorbed by the synthetic polymer fiber and it is then heated to 80.degree. C. or higher to recover the BF.sub.3.

REFERENCES:
patent: 2167358 (1939-07-01), Gleason
patent: 2997371 (1961-08-01), Wadsworth et al.
patent: 4263467 (1981-04-01), Madgavkar et al.
patent: 4384162 (1983-05-01), Vogel et al.

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