Treatment of gases and vapors from sulfuric acid digestion of titaniferous materials

Abstract From the Canadian patent

A process and apparatus are described for the treatment of gaseous effluents containing noxious gases and steam from the sufluric acid digestion of titaniferous materials. In the stages of the digestion where the gaseous effluents are given off, these are passed upwardly through a condenser pipe and through a hollow cylindrical zone of swirling liquid within the pipe forming a descending condenser film, whereby the steam is at least partly condensed. According to the novel feature during the entire duration, of the digestion an alkaline liquid is sprayed into a stream of gaseous effluents passing through the hollow cylindrical zone to remove noxious gases from said effluents and the …