Use of the unique properties of fluoropolymers in the design of new, highly effective, ecologically friendly technologies for the fine purification of hydrogen halides and their aqueous solutions

A number of properties of fluoropolymers in aqueous solutions of hydrogen h alides were investigated. The results enable fluoropolymers to be used in t he purification of hydrogen halides and their aqueous solutions. The hydrop hobicity of fluoropolymers and their diffusion permeability enable producti on of hydrogen halides of low moisture content. A second unit for hydroioni c convection is based on hydroionic repulsion (determined by the hydrophobi c properties of the fluoropolymer) and ionic elimination. The two units ena ble the highly effective, ecologically safe manufacture of highly pure hydr ogen halides and their aqueous solutions to be carried out with minimum fee dstock, cooling water, and power consumption. (C) 2001 John Wiley & Sons, I nc.