Method for separating and recovering boron trifluoride
AssigneeNippon Petrochemicals Company, Limited
InventorsIsoo Shimizu, Yoshisuke Kakuyama, Tsutomu Takashima
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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.
Claims25
A method for separating boron trifluoride comprising bringing an organic liquid mixture containing suspended or dissolved boron trifluoride into liquid phase contact with synthetic polymer fiber containing nitrile groups at a temperature of 50.degree. C. or lower.
A method for separating boron trifluoride from an organic liquid mixture comprising bringing an organic liquid mixture containing boron trifluoride or complex thereof into liquid phase contact with synthetic polymer fiber containing nitrile groups at a temperature of 50.degree. C. or lower to adsorb boron trifluoride on said polymer fiber, then desorbing the adsorbed boron trifluoride from the fiber by heating the fiber and adsorbed boron trifluoride to a temperature of at least 80.degree. C., said polymer fiber being substantially insoluble in said organic liquid.
Dependencies are inferred from the claim text.