煤粉制备系统螺旋输送机的优化改造

Optimization of the Screw Conveyor in the Pulverized Coal Preparation System

原有煤粉制备系统使用3台螺旋输送机和5台电液动推杆平板闸阀,工艺布置复杂,维修工作量大,电耗高,窑头和窑尾煤粉仓仓位控制操作难度大。改造后,新系统主要由1台通轴型螺旋输送机、1台可调式三通卸料阀和3台电液动推杆平板闸阀组成,简化了原有工艺系统,每年可节省维修费约10万元,年可节电约1.34万元,窑头和窑尾煤粉仓仓位调整更为灵活。

The original coal powder preparation system used 3 sets of screw conveyor and 5 sets of electro-hydraulic push rod flat gate valve,which had lots of problems including complex process layout,large maintenance workload,high power consumption,kiln and calciner coal powder bunker control operation difficulty.After the reform,the new system is mainly composed of one through shaft screw conveyor,one adjustable three-way discharge valve and three electro-hydraulic push rod flat gate valve,which simplifies the original process system.It can be saved about 100,000 yuan from the annual maintenance cost,and 13,400 yuan from the annual power.At the same time,the kiln and calciner coal powder warehouse position adjustment is more flexible.