全流程热效率模型在降低水泥熟料烧成热耗中的应用
Application of the full process thermal efficiency model in reducing the heat consumption of cement clinker burning
戴晓庆 1姚艳飞1
作者信息
- 1. 西安建筑科技大学材料科学与工程学院,陕西西安 710055
- 折叠
摘要
论文提出以包含生料磨、煤磨、水泥熟料烧成系统及余热锅炉在内的水泥熟料烧成全流程为研究对象,建立了水泥熟料烧成全流程热效率模型,并用于指导水泥生产线的能效优化改造.根据热效率模型,分解煅烧单元的热效率对全流程热效率的影响最大,应在能效优化时重点考虑.以2 500t/d生产线为例,将原有预热分解系统替换为高固气比预热分解系统后,分解煅烧单元的热效率由27.09％提高至30.08％,全流程热效率由68.23％提高至76.50％,熟料烧成热耗降低了 544.67 kJ/kg,烧成标煤耗降低了 18.6 kg/t,应用效果较好.
Abstract
Thermal efficiency model for the entire process of cement clinker burning is established in this paper.Its research object in-clude raw material mill,coal mill,cement clinker burning system and waste heat boiler.According to the thermal efficiency model,the thermal efficiency of the decomposition and calcination unit has the greatest impact on the thermal efficiency of the entire process,and should be given priority consideration in energy efficiency optimization.Taking the 2 500t/d production line as an example,after replac-ing the original preheating and decomposition system with the high solid-gas ratio preheating and decomposition system,the thermal ef-ficiency of the decomposition and calcination unit was increased from 27.09％to 30.08％,and the thermal efficiency of the entire pro-cess was increased from 68.23％to 76.50％.The heat consumption of clinker burning was reduced by 544.67 kJ/kg,and the consump-tion of standard coal burning was reduced by 18.6 kg/t.
关键词
热效率/全流程/热耗/水泥Key words
thermal efficiency/full process/heat consumption/cement引用本文复制引用
出版年
2024
NETL
NSTL
万方数据