Abstract: A gas purifying filter comprises a housing provided with gas inlet and outlet stubs arranged on side walls thereof. Rigidly secured inside the housing are stationary filtering elements fabricated from fibrous chemisorbing material in the form of rectangular plates disposed vertically and arranged essentially in parallel with one another. Opposite side edges of the rectangular plates are connected therebetween in pairs by partitions so as to afford an opening for the passage of gas between the plates facing the partition connecting the side edges of a pair of plates. Mounted above the rectangular plates are liquid compartments, the liquid serving to regenerate the filtering elements and being in contact with the upper section of the plates.

Abstract: A process for the removal of hydrogen fluoride and/or hydrogen chloride from gases comprising passing the gas to be purified through anion-exchange sorbent composed of a textured chemisorption fiber based on carbo-chain polymers with vinylpyridine groups or aliphatic amino groups. On exhaustion the sorbent is regenerated with water.The process of the present invention makes it possible to purify gases substantially completely irrespective of the initial concentrations of impurities in the gas being treated and ensures practically unlimited number of sorption-regeneration cycles with the same sorbent.