燃煤发电厂输煤筛碎系统改造实践
Reform practice of coal conveying sieve crushing system in coal-fired power plant
张立强 1亓俊波 2丁国栋2
作者信息
- 1. 国家能源集团 山西电力有限公司,山西太原 030006
- 2. 山西鲁晋王曲发电有限责任公司,山西长治 047500
- 折叠
摘要
煤电企业"三改联动"中不应忽视针对公用系统的节能降耗改造.在燃煤发电厂中,输煤系统是整个发电系统中重要的组成部分,具有分布范围广、粉尘较多的特点,输煤系统节能环保改造具有较强的潜力和意义.基于此,对王曲电厂输煤筛碎系统的实际运行现状进行分析,研究改造方案,通过设计研发和应用高度较小的1000 t/h高效筛碎一体机,完成碎煤系统与煤场封闭气膜隔离,避免气膜压差而导致的粉尘发生,减少了环境污染,避免了车辆二次倒运、二次输送和运输污染,节约了转运费和厂用电,达到节能环保的目的;筛上物不占用煤场面积,提高了煤场利用率;避免了不同煤种混合的筛上物再次进入输煤系统,提高了掺配精度;由单路破碎布置,改为双路破碎直接上煤,提高了设备可靠性.
Abstract
The energy saving and consumption reduction transformation of public system should not be ignored in the"three changes linkage"of coal power enterprises.In coal-fired power plants,the coal conveying system is an important part of the entire power generation system.It has the characteristics of wide distribution and more dust.The energy-saving and environmental protection transformation of the coal conveying system has strong potential and significance.Based on this,the actual operation status of the coal conveying screening and crushing system of Wangqu Power Plant is analyzed,and the transformation scheme is studied.Through the design,development and application of a 1 000 t/h high-efficiency screening and crushing machine with a small height,the coal crushing system is separated from the closed gas film of the coal yard to avoid the dust caused by the pressure difference of the gas film,reduce the environmental pollution,avoid the secondary reverse transportation,secondary transportation and transportation pollution of the vehicle,save the transportation cost and auxiliary power,and achieve the purpose of energy saving and environmental protection.The sieve does not occupy the area of the coal yard,which improves the utilization rate of the coal yard.It avoids the mixture of different coal types from entering the coal conveying system again,and improves the blending accuracy.The reliability of the equipment is improved by changing from single-channel crushing arrangement to double-channel crushing direct coal feeding.
关键词
发电厂/输煤/筛分/破碎/筛碎一体机Key words
power plant/coal transportation/screening/broken/sieve crushing machine引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据