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锅炉尾部加装省煤器能节煤,这是人所共知的,但4吨及以下锅炉装上省煤器能否节煤还是个值得研究的问题。这类小型锅炉的给水方式多数是间断性的,而铸铁省煤器的特性则是要求连续性的。因为在停止上水时,高温烟气继续对省煤器加热,这时里边的水要产生蒸汽,当再次上水时汽水就产生冲击发生事故。长期以来传统的解决办法,是当停止上水时要打开旁路烟道,或则打开再循环管让小部分水继续从省煤器管内流过。以防温度过高。这
It is well known that the economizer is installed at the rear of the boiler to economize on coal, but it is still worth to study the issue of whether the boiler with 4 tons or below can economize on coal economically. Most of these small boilers feed water is intermittent, while the characteristics of cast iron economizer is required continuity. Because in the stop when the water, the high temperature flue gas to heat up the economizer, then the water inside to produce steam, when the water again when the impact of coking water accident. For a long time, the traditional solution was to open the by-pass flue when Sheung Shui was stopped, or to open the recirculation pipe so that a small part of the water would continue to flow through the economizer pipe. To prevent the temperature is too high. This