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我厂SZYQ10吨/时微正压燃油锅炉,原设计没有布置空气预热器,由一台送风机将冷风直接鼓入锅炉助燃,设计排烟温度280℃,而几年运行来的实际排烟温度为300～320℃,排烟热损失达13％以上。锅炉烟囱由钢板制成。为了充分利用锅炉排烟余热以节约能源,我厂利用锅炉烟囱作为传热体,制成“空气预热器”来提高入炉风温,强化炉内燃烧,提高锅炉效率。具体改制方法如下: 在锅炉烟囱下部9米以下的圆筒上,以圆周展开面每隔200毫米,焊接一条长×宽×厚=1000×100×
I plant SZYQ10 t / h micro-pressure oil-fired boiler, the original design is not arranged air preheater, a blower will be the wind blowing directly into the boiler combustion, the design exhaust temperature of 280 ℃, while the actual operation of a few years to run the exhaust temperature For 300 ~ 320 ℃, exhaust heat loss of more than 13%. The boiler chimney is made of steel plate. In order to make full use of boiler exhaust heat to save energy, our factory uses the boiler chimney as the heat transfer body, made of “air preheater” to improve the furnace temperature, strengthen the combustion in the furnace and improve the boiler efficiency. Specific restructuring method is as follows: In the lower part of the boiler chimney 9 meters on the cylinder to the surface of the circumference of the development of every 200 mm, welding a length × width × thickness = 1000 × 100 ×