Abstract
The modification of combustion methods is the most widely used technology in nitrogen oxides control. Flue gas treatement (FGT) systems have recently been marketed by Japan because stricter nox emissions standards. Nox is formed in the combustion process and results either from thermal fixation of atmospheric nitrogen, or from the conversion of chemically bound nitrogen in fuel systems. Emission control for stationary systems works via suppressing the production of nox or via removal from stack gases. Combustion modification, though, has proved to be the most cost-efficient method for reducing nox levels with a 60% decrease in emissions.