Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
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.
Kakuyama Yoshisuke
Shimizu Isoo
Takashima Tsutomu
Cintins Ivars
Nippon Petrochemicals Company Limited
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