燃煤发电锅炉掺氨燃烧技术研究进展及应用分析
Research Progress and Application Analysis of Ammonia Blending Combustion Technology for Coal-fired Power Generation Boilers
阮仁晖 1许景元 1崔保崇1
作者信息
- 1. 西安交通大学热流科学与工程教育部重点实验室,陕西 西安 710049
- 折叠
摘要
燃煤机组掺氨燃烧是从燃烧源头减碳的有效方法.由于氨与煤在物理和化学特性上存在显著差异,导致氨煤混燃存在诸多技术难题.通过总结国内外氨煤混燃的基础研究、技术开发与中试研究,以及工业应用的研究进展,提出大型燃煤电站锅炉掺烧面临的挑战,包括氨煤混燃中NOx排放控制、氨对锅炉受热面的腐蚀和氨供应系统与原有系统的耦合运行控制等.以600 MW机组为例,对比计算了掺氨前后的度电成本,发现液氨成本是制约燃煤机组大比例掺氨燃烧的主要原因之一.
Abstract
Ammonia-blending combustion in coal-fired units is an effective method to reduce carbon emis-sions at the combustion source.Due to significant differences in the physicochemical and combustion charac-teristics between ammonia and coal,there are numerous technical challenges associated with co-firing ammo-nia and coal.By summarizing the basic research,technological development,pilot-scale experiment studies,and industrial application research progress of ammonia-coal co-firing in both domestic and international con-texts,several challenges can be identified for large-scale coal-fired power plant boilers engaged in co-firing:NOx emission control in ammonia-coal co-firing,corrosion of boiler heating surfaces caused by ammonia,cou-pling operation control between ammonia supply system and original system.Taking a 600 MW unit as an ex-ample,this paper conducted a comparative calculation of the cost per kilowatt hour before and after ammonia blending,and found that the cost of liquid ammonia is one of the main reasons restricting the large-scale ammonia-blending combustion of coal-fired units.
关键词
燃煤锅炉/掺氨燃烧技术/NOx控制技术Key words
coal-fired boilers/ammonia-blending combustion technology/NOx control technology引用本文复制引用
基金项目
国家自然科学基金青年项目(52206170)
出版年
2024
NETL
NSTL
万方数据