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小型锅炉在农村应用很普遍,但是不少属于归锅炉或城市淘汰的锅炉。这些锅炉价格便宜,仅为新锅炉的15％～30％,从而掩盖了易于腐蚀、结垢、烟火管堵塞和热效率低(有的仅50％)的缺陷。国产小型燃煤锅炉,一般小于0.3吨/时的以明火反烧炉为主0.3～4吨/时的多数以链条炉为主。后者造价高、煤种适应性差,特别不适于山区和离铁路较远的农村工业使用。农村选用工业锅炉,应当注意以下几点: 1.锅炉容量不宜太大,一般以0.2～2吨/时为宜。使用单位应先进行热力平衡计算。
Small boilers are common in rural areas, but many belong to the boiler or city out of the boiler. These boilers are inexpensive and represent only 15% to 30% of the new boiler, thereby masking defects that are susceptible to corrosion, fouling, clogged pyrotechnics and low thermal efficiency (some only 50%). Domestic small-scale coal-fired boilers, generally less than 0.3 tons / hour to the main open-hearth furnace 0.3 to 4 tons / hour mostly chain furnace. The latter is costly and has poor adaptability to coal types, and is particularly unsuitable for use in rural areas and in rural industries that are further from the railroad. The choice of industrial boilers in rural areas, should pay attention to the following points: 1. Boiler capacity should not be too large, generally 0.2 to 2 tons / hour is appropriate. The user should first use thermal equilibrium calculation.