燃用高碱煤锅炉的宽负荷对冲燃烧技术研究及应用
Research and application of wide load opposed firing technology for high-alkali coal fired boilers
邓坚 1冉燊铭 1杨章宁 1范贤 2王杜佳 1郭洋洲 3李艳飞 2李维成 1高国栋 2潘绍成 1张秀昌1
作者信息
- 1. 清洁燃烧与烟气净化四川省重点实验室,四川 成都 611731;东方电气集团东方锅炉股份有限公司,四川 自贡 643001
- 2. 华电新疆准东五彩湾发电有限公司,新疆 昌吉 831700
- 3. 西安热工研究院有限公司,陕西 西安 710054
- 折叠
摘要
新疆准东高碱煤是优良的动力煤种,但大比例燃用高碱煤时锅炉设备易发生严重结渣问题,燃用准东煤锅炉的燃烧系统设计原则与提高低负荷稳燃能力的传统技术措施相矛盾.为解决该问题,基于煤粉稳定燃烧机理,研究了节油点火燃烧器布置优化、中层燃烧器交错布置、煤粉浓度在线可调、燃烧器结构优化等措施.某燃用准东高碱煤的350MW机组对冲燃烧锅炉深度调峰改造项目应用该技术,实现了不投油稳燃负荷低于18％额定负荷.
Abstract
Xinjiang high-alkali coal is a cost-effective power coal,but when it is used in large proportions,boiler equipment is prone to severe slagging problems.The design principles of the combustion system for boilers using Zhundong coal are inconsistent with conventional technical measures to improve low-load stable combustion performance.To solve this problem,based on the mechanism of stable combustion of pulverized coal,measures such as optimized layout of tiny oil ignition burners,interlaced arrangement of middle layer burners,online adjustable coal powder concentration and burner design optimization have been studied.The technology was applied in a 350 MW unit's deep peak regulation retrofit project using Zhundong high-alkali coal as fuel,and achieved a stable combustion load of less than 18％rated condition without oil injection.
关键词
高碱煤/对冲燃烧/超低负荷/稳燃技术/防结渣/工程应用Key words
high-alkali coal/opposed combustion/ultra low load/stable combustion technology/anti slagging/engineering application引用本文复制引用
基金项目
国家重点研发计划项目(2022YFB4100800)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据