芦竹混煤掺烧对火电机组运行的影响分析及参数优化OA
Impact analysis and optimization of novel Arundo donax L.-coal co-firing on the operation of coal-fired power units
[目的]传统生物质因季节性强、区域性分散等问题不被火电厂所采用.目前,一种新型芦竹不仅产量大而且极易生存,可种植于滩涂与沿海湿地等边际土地,能有效解决上述问题.[方法]基于2×1 000 MW超超临界机组直流锅炉,开展新型芦竹掺烧试验,分析其对火电机组热力系统、制粉系统、燃烧特性等方面的影响.[结果]结果表明:添加质量分数15%芦竹颗粒后,火电厂机组运行基本稳定;但石子煤排出增加,磨煤机电流提升约5%～10%,磨煤机进出口差压最高提升 10%～15%,炉膛内燃烧强度有所下降;芦竹可磨指数低是制约机组运行的关键因素,提升芦竹可磨指数最佳烘焙区间为 250～300℃.
Traditional biomass resources are rarely adopted by coal-fired power plants due to their seasonal availability and regional dispersion.A novel Arundo donax L.variety,characterized by high yield and robust adaptability to marginal lands such as tidal flats and coastal wetlands,offers a viable solution to these challenges.In this study,based on a 2×1 000 MW ultra-supercritical pressure once-through boiler,co-firing experiments of this novel Arundo donax L.were carried out,and its effects on thermal system,powder making system,and combustion characteristics of thermal power units were analyzed.The results show that the thermal power plant unit operation is stable after adding 15%Arundo donax L.particles.However,the stone coal discharge increases,the coal mill current is elevated by about 5%～10%,the maximum elevation of the coal mill inlet and outlet differential pressure is elevated by 10%～15%,the combustion intensity in the furnace decreases slightly.The low grindability index of Arundo donax L.is the key factor affecting the operation of the unit,and the study concludes that the torrefaction interval of about 250～300℃is the best interval to improve the grindability index of Arundo donax L.
史哲浩;徐辉;王凯;柳明;唐权;冷尔唯
上海上电漕泾发电有限公司,上海 201507上海上电漕泾发电有限公司,上海 201507上海上电漕泾发电有限公司,上海 201507上海发电设备成套设计研究院有限责任公司,上海 200240湖南大学机械与运载工程学院,湖南 长沙 410082湖南大学机械与运载工程学院,湖南 长沙 410082
芦竹直接掺烧制粉系统哈式可磨指数烘焙
Arundo donax L.direct co-firingmilling systemsHardgrove grindability indextorrefaction
《热力发电》 2026 (3)
82-91,10
国家自然科学基金项目(52476194) National Natural Science Foundation of China(52476194)
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