FOSSIL-FUEL HEATED STEAM GENERATOR COMPRISING DENITRIFICATION DEVICE FOR HEATING GAS

摘要

The present invention relates to a denitrifying apparatus for a heating gas (G) and a steam generator (2) containing a combustion chamber (4). The denitrification device 54 for the heating gas G is connected to the lower portion of the combustion chamber 4 when viewed in the flow direction through the horizontal gas duct 6 and the vertical gas duct 8 on the heating gas side. It is an object of the present invention to provide a steam generator which requires a minimum space and ensures the reliable denitrification of the heating gas (G) of the fossil fuel (B). For this purpose, a plurality of burners 70 are arranged at the height of the horizontal gas duct 6. In addition, a vertical gas duct 8 for substantially vertical flow from below to above of the heating gas G and a denitration device 54 for almost vertical flow from top to bottom are designed.