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近年来,全国蒸汽锅炉的节能已取得明显的效益,例如在KZL2—8型锅炉尾部水平烟道上用热管换热器回收余热,使排烟温度从200℃降到106℃,锅炉供水温度从24℃上升到73℃,余热收回率可达52.2％,这种用加装尾部受热面来回收锅炉排烟余热以提高锅炉热效率的方法,对于蒸汽参数较低和容量较小的工业锅炉(包括工业窑炉),其效益是较明显的;因为这类锅炉设计的排烟温度本来就较高,如果运行条件改变(如煤
In recent years, the national steam boiler has achieved significant energy-saving benefits, for example, in the horizontal tail of the KZL2-8 boiler with heat pipe heat exchanger to recover waste heat, the exhaust gas temperature dropped from 200 ℃ to 106 ℃, the boiler feed water temperature from 24 ℃ to 73 ℃, the recovery rate of residual heat can reach 52.2%. This method of recovering waste heat from the boiler exhaust heat to improve the boiler thermal efficiency with the installation of the heated surface at the rear of the boiler. For industrial boilers with low steam parameters and small capacity Kilns), the benefits are obvious; since the design of such boilers has inherently higher flue gas temperatures, and if operating conditions change (such as coal