大型布袋收粉设备的技术改造

Technical Modernization of the Large Collecting Powder Equipment

马鞍山钢铁股份有限公司(简称马钢)1~#2500m^3高炉喷煤的制粉系统选配了大型布袋收粉设备,在早期生产不到10个月的时间里,发生煤粉自燃事故5次,烧坏7个单元的1050条布袋,事故之后进行了技术分析,采取预防措施并在设计方面进行技术改造,1年多来,未发生煤粉自燃事故。

The pulverized coal preparation system for new No. 1 2500m^3 blast furnace in Maanshan Iron & Steel Co. Ltd. was equipped with large bag equipment of collecting powder. In the early period of operation less than ten months, there are some troubles caused by spontanous combustion of pulverized coal for 5 time, which burnt out 1050 bags in seven units. After technical analysis, precautions and technical modernization are taken,the spontanous combustion has not taken place for more than a year.