METHOD FOR REMOVING FLUORINE FROM FLUORINE-CONTAINING EXHAUST GASES

摘要

The invention relates to a method for removing fluorine from fluorine-containing gas streams, comprising two process stages, wherein in a first stage the fluorine-containing gas stream is treated with an alkaline hydroxide solution (e.g. NaOH) and the gas stream emerging from this stage is treated in a second stage with a solution of a reducing agent (e.g. sodium thiosulfate).