煤制油工程中煤粉制备系统的火灾危险性分析

Fire danger analysis of coal powder manufacture system in coal liquefaction project

以煤液化工程的煤粉制备系统为研究对象,分析了煤液化工程所用煤粉、磨煤系统和煤粉仓的火灾危险性,并提出了相应的火灾预防措施。煤液化工程的整个煤粉制备系统使用惰性气体保护。由于煤粉在外部环境中容易发生爆炸,应加强对煤粉泄漏事故的探测,采取清除泄漏煤粉的措施及防止煤粉爆炸的措施,如设置水喷雾系统对煤粉仓进行保护。由于煤粉仓容易发生超压爆破,可考虑适当提高防爆门的动作压力,按超压时煤粉仓不被破坏确定。

The fire danger of coal mill system,coal powder storehouse and the coal powder used in coal liquefaction project was analyzed based on the research of coal powder manufacture system in coal liquefaction project.The measures for preventing fire were put forward.The whole coal powder manufacture sys-tem coal liquefaction project was protected by inert gas.The leakage of coal powder must be detected and the leaked coal powder must be cleaned since the coal powder is easy to explode in nature environment.The coal powder explosion must be prevented by like setting water spray system.The acting pressure of explosion door should be enhanced to avoid the disturbing by overload of pressure.