Removal of NOx from flue gas by reburning with plasma activated natural gas : Review and economics

摘要: Abstract By initiating chain reactions that consume NOx, CHi radicals play an important role in natural gas reburning. In conventional reburning, most of the methane is consumed with oxygen to form CO, and does not produce CHi- as intermediate products, which limits NO reduction efficiency. Activating externally boiler may generate a mixture by passing CH4 through discharge before injection into reburning zone. Five activation technologies are reviewed: microwave heating plasmas, electron beam irradiation-induced corona induced thermal plasmas. Wall, cyclone tangentially fired boilers were considered economic assessment. From preliminary capital operating cost estimates, pulse techniques appear be promising