港口散粮筒仓系统是散粮流通领域不可缺少的一个节点,而动火作业又是对港口散粮筒仓系统进行建设、维修、维护,确保港口散粮筒仓系统正常生产、运行必不可少的作业环节。如何对港口散粮筒仓系统动火作业加强安全控制管理尤为必要。一、散粮粉尘爆炸的机理及形成粉尘爆炸的条件散粮粉尘即使在没有火灾爆炸的情况下,在粉粒表面也有氧化反应发生,并有热量放出,但它能通过热传导被散发出去。这种情况下,反应速度很小,放热与散热处于平衡状态,基本上 Bulk grain silos in ports are an indispensable node in the field of bulk grain distribution, and the hot work is also to construct, repair and maintain silos for bulk grain in the port so as to ensure the normal production and operation of bulk grain silos at ports. Less work links. How to stabilize the safety control and management of the bulk grain silo system in port operations is particularly necessary. First, the bulk grain dust explosion mechanism and the formation of dust explosion conditions Bulk grain dust Even in the absence of fire and explosion, the oxidation reaction occurs on the surface of the powder, and heat release, but it can be emitted through the heat conduction. In this case, the reaction rate is very small, the heat and heat are in equilibrium, basically