DIAGNOSIS AND ANALYSIS FOR CAUSE LEADING TO OUTFIRE OF A 410t/h BOILER[J]. Thermal power generation, 2004, (2): 23-26. DOI: 10.19666/j.rlfd.2004.02.008.
410t/h锅炉灭火原因诊断与分析
摘要
针对某台 4 10t/h锅炉多次发生的灭火事故
通过进行灭火诊断试验分析
认为其主要原因是部分给粉机入口挡板开度过小
导致这些给粉机在一定转速下出力不稳定
以及给粉机出力较大时风粉混合物温度偏低等。通过调整
锅炉炉内燃烧稳定
燃用贫煤时
2 2 0t/h负荷不投油连续稳定运行 4h
运行中未再发生类似原因的灭火事故
Abstract
In view of outfire phenomena have occurred many times in a 410t/h boiler
cause analysis through diagnosis test has been carried out. It is considered that the main causes are as follows: the opening degree of inlet baffle plate for some pulverized coal feeders was unduly small
resulting in unstable output of the said feeders under certain revolution speed
and in somewhat lower temperature of airfuel mixture as the output of pulverized coal feeders to be great. After adjustment
the combustion in furnace of the said boiler to be stable
and a load of 220 t/h can be maintained successfully in operation of four hours without oil injection in duration of burning low grade coal. In a whole year after the test
the outfire resulting from similar causes has never occurred again.