NOx Reduction Analysis in Fuel Gas Combustion Chamber Using Water Injection

Nowadays, a great deal of efforts are being carried out to reduce NOx emission in gas turbines. NOx emission depends closely on the flame temperature. Water or steam injection reduces the pick temperature and NOx emission. In this paper, after modeling the combustion chamber, steam, with steam to fuel ratios of 0.5 and 1, is injected into the chamber and its effect on the NOx emission reduction is studied. The FLUENT software is used for solving the related reactive flow. It is concluded that, NOx emission decreases considerably, but CO emission increases.