循环流化床锅炉爆燃原因及解决办法

分析了循环流化床锅炉风室、风道和烟道产生爆燃的原因 。

300MW CFB锅炉启动中爆燃原因及预防措施

分析了国产300MW循环流化床锅炉在冷态启动阶段,因炉内外循环物料少、炉内燃烧工况不稳定,在炉膛内各部温度偏差较大时大量投煤易产生炉膛爆燃的原因及危害,从合理选用启动床料、正确控制启动过程中的相关参数和投煤时间等方面,提出了切实可行的控制措施。

关于锅炉安全监控系统应用中几个问题的探讨

分析探讨了锅炉安全监控系统在应用中火焰检测器安装位置、检测性能、合理调整炉膛压力动作参数、预防炉膛爆燃几个典型问题,并提出了几点建议。

Experimental study on explosive mechanism of spontaneous combustion gangue dump

In order to explore the reason for the frequency explosion of spontaneous combustion coal gangue dump and get to know their explosion mechanism, established the experiment platform about spontaneous combustion coal gangue dump interoperable water. The gangue dump was heated using the external heat source, and rainy weather through water mist was simulated. Simulated experiment about explosion of spontaneous combustion coal gangue dump was carried out on the different conditions of the rainfall or not. The unusual gases produced in the course of gangue combustion and the changes in temperature were observed, and their impacts on the explosion of gangue dump were analyzed. The experimental results show that overall warming phenomenon of the gangue dump after watering occurred, the amount of H2 is three times than that before watering, and the amount of CO is far greater than that on the conditions of no-watering, at the same time combining with local observation and tests. It is found that the content of the oxygen reduce with the temperature increasing; however, gangue dump internal hydrogen content increase unusually on the rainfall conditions at 90 ℃, but the local measuring points reach the explosion limit. The existence of the CO and H2 is the main reason for inducing the explosion of spontaneous combustion coal gangue dump.

国电电厂双进双出磨煤机磨制神华煤防爆专项分析

本文对原国电某电厂双进双出磨煤机磨制神华煤防爆专项进行了深入分析,首先介绍了BBD型磨煤机的特性,其次详细分析了BBD双进双出钢球磨煤机磨制该煤种时易发生爆燃的原因,最后提出了相应的防爆方案。结果表明,通过有效调整与改造BBD型磨煤机,可有效降低制粉系统爆燃的风险。