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简要介绍了 DG670 /1 40型锅炉的结构特点及运行情况 ,对该型锅炉排烟温度高的原因从设计因素、运行因素、维修因素等方面作了分析 ,提出技术改造方案并进行了校核 ,经实施后机组煤耗有较大幅度降低 ,未再发生受热面泄漏事故 ,技术及经济效果良好
This paper briefly introduced the structure and operation of DG670 / 1 40 boiler, and analyzed the reasons for the high temperature of the boiler exhaust gas from the aspects of design factor, operation factor and maintenance factor, proposed the technological transformation scheme and checked , After the implementation of coal-fired units have a more substantial reduction, there is no recurrence of heating surface leakage, technical and economic results are good