残油の流動層燃焼(II)
NOx抑制に対するNH3添加の影響
1980 年 59 巻 6 号 p. 412-415
詳細
1980 年 59 巻 6 号 p. 412-415
Emission and reduction of NOx during fluidized bed combustion were studied using dolomite as a bed material.Arabian Light vacuum residue was used as fuel oil in this work, since this oil has the lowest combustibility among various residual oils studied in the preceding work.Combustion efficiency & about 98% was attained with this fuel oil at 850°C and 20% excess air.Under these conditions, SOx+H2S concentrations were as low as 15 ppm, while 328 ppm of NOx was emitted.It was found, however, that NOx concentration could be reduced to 220 ppm by the addition of NH3 to the combustion system.Moreover, the mixture of H2 and NH3 was more effective in reducing NOx concentration.
