论文部分内容阅读
我厂35吨/时链条锅炉由于空气预热器积灰,使烟气通道堵塞,引风阻力增加,且灰的传热系数小,使传热效果降低,排烟温度升高,锅炉效力降低,严重时被迫限制送风量,造成燃烧恶化、锅炉出力降低,甚至被迫停炉。另外烟气中的二氧化硫转化三氧化硫与水蒸粉结合,生成硫酸蒸汽,它同灰一起粘结在低温管壁时,便产生严重的堵塞与腐蚀。
I 35 tons / hour chain boiler boiler as a result of fouling air preheater, the flue gas channel is blocked, the wind resistance increases, and the heat transfer coefficient of ash is small, so that the heat transfer effect decreases, the exhaust gas temperature increases, reducing the effectiveness of the boiler , Was forced to limit the amount of air supply, resulting in deteriorating combustion, boiler output reduced, or even forced to shut down. In addition, the sulfur dioxide in the flue gas is converted into sulfur trioxide to be combined with steaming steam to generate sulfuric acid vapor. When it cohesives with the ash at the low-temperature pipe wall, it will cause serious blockage and corrosion.