Process for stabilizing emissions from high-temperature industrial processes

摘要

A method for treating a flue emissions stream from a high-temperature industrial process in which the stream comprises an acid gas and particulates contaminated with a hazardous metal includes the steps of dry injecting into the stream a metal stabilizing agent in an amount sufficient to reduce leaching potential of the metal under natural or induced leaching conditions and an acid gas treating agent that comprises a reactive alkaline oxide powder (-400 mesh or smaller) having a surface area of at least about 35 m<2>/g, (when measured by BET) in an amount sufficient to remove at least 40% of the acid gas and to act as a pH control agent for the metal stabilizing aspect of the invention.