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大型燃油锅炉采用低氧燃烧技术在世界上已有二十多年的历史。近年来,许多国家的燃油锅炉可以把烟气含氧量降低到1％以下(即过剩空气率ε<5％)运行,甚至可以低到0.2％(ε=1％)。这就是说,供燃烧的空气已接近理论需要量了。这种运行方式的好处是减轻或避免了高温受热面(高温过热器)及低温受热面(空气予热器)的腐蚀,沾污;提高了锅炉热效率并降低了厂用电;烟囱排出的酸雾及氮氧化物也显著减少,减
Large-scale oil-fired boilers using low-oxygen combustion technology in the world for more than 20 years of history. In recent years, oil-fired boilers in many countries have been able to operate to reduce the oxygen content of flue gas to less than 1% (ie, ε <5% of excess air) and can even be as low as 0.2% (ε = 1%). This means that the air for combustion is close to the theoretical requirement. The benefits of this mode of operation are reduced or avoided corrosion and contamination of the heated surfaces (high temperature superheaters) and the low temperature heated surfaces (air preheaters), increased boiler thermal efficiency and reduced plant electricity, and the acid exiting the stack Fog and nitrogen oxides also significantly reduced, minus