2500t/d水泥熟料生产线烧成系统的热工分析及优化  

Thermal Analysis and Optimization of the Pyro-system of 2500t/d Cement Clinker Production Line

作　　者：赵武魁 ZHAO Wukui(Shanxi Changhao Environmental Protection Technology Co.,Ltd.,Changzhi Shanxi 047508,China)

机构地区：[1]山西昌灏环保科技股份有限公司,山西长治047508

出　　处：《水泥技术》2024年第3期38-42,共5页Cement Technology

摘　　要：某2500t/d水泥熟料生产线存在熟料易磨性差、氨水用量大、预热器C1出口温度高等问题。通过标定烧成系统预热器各级旋风筒进出口温度、压力、下料温度及重点部位的气体成分,分析了预热器系统运行过程中存在的问题。提出了优化分解炉煤粉管路,改造烟室和C4撒料板结构,提高缩口风速,改进旋风筒进口水平段和分解炉鹅颈管,增设阶梯式预燃炉等技改方案。改造后,预热器C1出口温度由340℃降至320℃,在保持NO_(x)排放浓度45mg/m^(3)不变的情况下,氨水用量从4.5kg/t.cl降低至2.6kg/t.cl,氨逃逸<5mg/m^(3),回转窑系统运行稳定。The 2500t/d cement clinker production line of a cement enterprise has problems such as poor wearability of clinker,large ammonia dosage,and high exit temperature of preheater C1.By calibrating the inlet temperature,pressure,discharge temperature and gas composition in key parts of the cyclone cylinder within the preheater of the pyro system,the problems existing in the operation of the preheater system are analyzed.Technical reform schemes such as optimizing the pulverized coal pipeline of the calciner,transforming the structure of the kiln inlet chamber and the C4 sprinkler plate,improving the shrinkage gas velocity,improving the horizontal section of the cyclone cylinder and the gooseneck pipe of the calciner,and adding a stepped pre-combustion furnace.After the transformation,the exit temperature of the preheater C1 was reduced from 340℃to 320℃.Under the condition that the NO_(x)emission concentration remained unchanged at 45mg/m^(3),the amount of ammonia water consumption was reduced from 4.5kg/t.cl to 2.6kg/t.cl,the ammonia escape<5mg/m^(3),and the operation of the rotary kiln system was stable.

关 键 词：烧成系统 热工标定 结皮结圈 氨逃逸 阶梯式预燃炉 

分 类 号：TQ172.624[化学工程—水泥工业]