首页>
外国专利>
INTEGRATED PROCESS AND APPARATUS FOR CONTROL OF POLLUTANTS IN COAL-FIRED BOILERS
INTEGRATED PROCESS AND APPARATUS FOR CONTROL OF POLLUTANTS IN COAL-FIRED BOILERS
展开▼
机译:控制燃煤锅炉污染物的综合过程和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method and apparatus for reducing SOX and NOX levels in flue gases generated by the combustion of coal in a boiler in which low NOX burners and air staging ports are utilized to inhibit the amount of NOX initially produced in the combustion of the coal, a selected concentration of urea is introduced downstream of the combustion zone after the temperature has been reduced to the range of 1300.degree.F. to 2000.degree.F., and a sodium-based reagent is introduced into the flue gas stream after further reducing the temperature of the stream to the range of 200.degree.F. to 900.degree.F. Under certain conditions, calcium injection may be employed along with humidification of the flue gas stream for selective reduction of the pollutants.
展开▼