4500t/d水泥熟料生产线节能降耗优化措施  

Optimal Measures for Energy Saving and Consumption Reduction of 4500t/d Cement Clinker Production Line

作　　者：崔洪坤 刘志强 CUI Hongkun;LIU Zhiqiang(Hefei Cement Research&Design Institute Co.,Ltd.,Heifei Anhui 230051,China)

机构地区：[1]合肥水泥研究设计院有限公司,安徽合肥230051

出　　处：《水泥技术》2022年第4期21-26,共6页Cement Technology

基　　金：安徽省碳达峰碳中和科技创新专项支撑项目(202203f07020009)。

摘　　要：某4500t/d水泥熟料生产线存在煤耗高、预分解系统阻力大、产量偏低、系统换热差、结皮严重、冷却机热回收效率低、脱硝氨水消耗量大等问题。结合生产实际和工艺设计研究,采用了扩大分解炉炉容、扩大旋风筒进口通风面积、优化烟室缩口、预热器系统降阻、更换高效撒料箱与锁风阀,采用低氮分级燃烧技术、更换第四代高效篦冷机等技改措施,C1旋风筒出口负压降至5000Pa,脱硝系统处理前NO_(X)浓度控制在450mg/m^(3)左右,出篦冷机熟料温度65℃+环境温度,实物煤耗降至136.5kg/t.cl,年综合经济效益达3300余万元,节能改造效果显著。There were lots problems in the 4500t/d cement clinker production line such as high coal consumption,large resistance of the pre-calcining system,low capacity,poor system heat exchange,serious coating,low cooler efficiency,and large consumption of denitrification ammonia.Combined with production practice and process design research,the expansion of calciner volume,the expansion of the ventilation area at the inlet of the cyclone,the optimization of riser duct of the kiln inlet chamber,the resistance reduction of the preheater system,the replacement of the high-efficiency splash box and the air lock valve,and the use of low-nitrogen staged combustion technology,the fourth-generation high-efficiency grate cooler are adopted.The negative pressure at the outlet of the C1 cyclone is reduced to 5000Pa,the NO_(X) concentration is controlled at about 450mg/m^(3) before the treatment of the SNCR system,and the clinker temperature out of the grate cooler is 65℃+ambient temperature,the physical coal consumption is reduced to 136.5kg/t.cl,the annual comprehensive economic benefit can reach to 33 million yuan,and the effect of energy-saving transformation is remarkable.

关 键 词：预分解系统 第四代篦冷机 热回收效率 

分 类 号：TQ172.622.29[化学工程—水泥工业]