开式煤粉制备系统运行安全分析与隐患防治 -

为了消除锅炉燃料煤粉在制备、储存过程中存在的自燃、爆炸隐患,需要从粉煤制备流程及煤质两方面进行控制。首先简要介绍了常用的煤粉制备工艺,同时指出工业煤粉锅炉燃料煤粉煤质一般为较低变质程度的年轻烟煤,且煤粉的挥发分越高,阴燃温度越低。煤粉的爆炸受可燃物浓度与含氧量、点燃源、挥发分、煤粉粒度影响较大。最后从烘干系统、储粉系统、工艺布置、管理维护方面论述了具体的隐患防治措施。 To prevent spontaneous combustion and explosion during preparation and storage of pulverized coal,the preparation of pulverized coal and coal quality detection should be paid more attention.Summarize the common pulverized coal preparation technology,point out that the low metamorphic bituminous coal is the common fuel for industrial boiler,and the higher volatile,the lower smoldering temperature.The explosion of pulverized coal is largely influenced by its concentration,oxygen content,ignition source,volatile and particle size.Introduce the specific hidden trouble prevention measures from the aspect of drying system,pulverized coal storage system,processing set-up and maintenance