GAS CLEANING SYSTEM FOR COMBUSTION GASES PRODUCED BY BURNING COAL SUCH AS IN PULVERIZED COAL FIRED STEAM GENERATORS

摘要

of the Invention A gas handling system for a coal-fired steam generator wherein the electrostatic precipitator is in a hot gas zone intermediate the economizer or boiler exit and the air preheater, and where the gases entering the stack are controllably reheated by conveying regulated quantities of gas from the exit of the precipitator to a location intermediate the wet scrubber and the stack.