Evaporative Gas Conditioning (EGC) is a technique for conditioning flue gas prior to electrostatic precipitators and fabric filters to improve particulate collection. Unlike other flue gas conditioning techniques, EGC does not add any toxic or hazardous compounds to the plant site, flue gas, or collected ash. Instead, finely atomized water is evaporated in the gas stream to lower its temperature and raise the moisture content of the flue gas. This beneficially alters particulate properties by raising surface conduction and increasing inter-particle bonding, thereby enhancing the collection of dust and trace elements in particulate control devices.