万吨级熟料烧成系统节能降碳  

Energy Conversation and Carbon Reduction for 10 000t/d Clinker Pyro System

作　　者：马娇媚[1] 王克东 隋明洁[1] 高为民 MA Jiaomei;WANG Kedong;SUI Mingjie;GAO Weimin(Tianjin Cement Industry Design&Research Institute Co.,Ltd.,Tianjin 300400,China;China United Cement Group Co.,Ltd.,Beijing 100036,China)

机构地区：[1]天津水泥工业设计研究院有限公司,天津300400 [2]中国联合水泥集团有限公司,北京100036

出　　处：《水泥技术》2023年第1期15-23,共9页Cement Technology

基　　金：建材联合会项目202201JBGS04-01水泥工业“零碳工厂”技术装备研发与应用示范。

摘　　要：针对徐州中联1号万吨生产线面临的能效提升技术瓶颈,研究提出了烧成系统减污降碳解决方案,在中国水泥工业首次应用了五级改六级预热器技术,同时,进行分解炉扩容并采用自脱硝技术提高主燃区的效率,提高回转窑转速,采用带中置辊式破碎机的第四代篦式冷却机替换原有冷却机。改造后,预热器出口温度降低了83℃,熟料单位产品综合煤耗降低约14kgce/t.cl,低于GB 16780-2021标准中的1级限额值约4%,每年节约标煤4.3万吨,减少二氧化碳排放10.8万吨;在现有窑尾框架内应用自脱硝源头减排技术,NOx排放浓度<25mg/Nm3,满足并优于当地环保标准要求,节约氨水用量1.0万吨,实现了能耗双控和超低排放目标下水泥生产技术的全新升级。Aiming at the technical bottleneck of energy efficiency improvement of CUCC(Xuzhou)10 000t/d production line Ⅰ,a solution of pollution reduction and carbon reduction of pyro system was proposed.The five-stage preheater was changed to six-stage preheater for the first time in chinese cement industry.The calciner volume was expanded and self-denitrification technology was adopted to improve the efficiency of the main combustion area,the speed of rotary kiln was accelerated,and the cooler was changed to the fourth-generation cooler with middle roll crusher.After the transformation,the outlet temperature of the preheater is reduced by 83℃,the standard coal consumption of clinker is reduced by about 14kg/t.cl,the comprehensive coal consumption per unit product of clinker reaches and is lower than the level 1 index of GB 16780-2021 standard by about4%,43 000 tons of standard coal is saved every year,and the annual carbon dioxide emission is reduced by 108 000 tons.Meanwhile,the emission reduction technology of self-denitrification source is applied in the existing preheater tower.The NOxemission is lower than 25mg/Nm~3 required by the local environmental protection department,the ammonia consumption is reduced by 10 000 tons,and provide a technology demonstration for the new upgrading of cement manufacturing under the double carbon strategy background,double control of energy consumption and ultra-low emission targets.

关 键 词：万吨生产线 熟料烧成 能效提升 五级改六级 节能降碳 

分 类 号：TQ172.622.29[化学工程—水泥工业]