热力发电2017，Vol.46Issue(6)：107-112,118,7.DOI:10.3969/j.issn.1002-3364.2017.06.107
300 MW机组CFB锅炉超低排放两级联合脱硫匹配方式试验
Matching method for ultra low emission for a 300 MW circulating fluidized bed boiler with two stage desulfurization
摘要
Abstract
In order to further increase the economy of SO2 ultra low emission, an experimental study on matching strategy of dry desulfurization and semi-dry flue gas desulfurization for a 300 MW unit circulating fluidized bed (CFB) boiler was carried out. The results show that, the dry desulfurization gradually deviated from the high efficiency desulfurization range as the boiler load increased, and with the same desulfurization efficiency, the calcium sulfur ratio increased and the limestone utilization rate decreased. As the boiler load increased, it reached the high desulfurization range of semi dry flue gas desulfurization gradually, and with the same desulfurization efficiency, the calcium sulfur ratio decreased and the lime hydrate utilization rate increased. The desulfurization efficiency of the two-stage desulfurization system can reach above 99% and that of the semi-dry desulfurization method can reach up to 95%. The multi-parameter strategy has better economy than the single SO2 factor matching strategy. The combined desulfurization in the furnace and outside the furnace can further lower the SO2 emission, and has good SO2 emission stability and regulating flexibility.关键词
CFB锅炉/SO2/超低排放/炉内干法脱硫/烟气半干法脱硫/匹配方式/脱硫效率Key words
CFB boiler/SO2/ultra low emission/dry desulfurization/semi-dry flue gas desulfurization/matching method/desulfurization efficiency分类
能源科技引用本文复制引用
魏星,姜兴华,金森旺,高洪培..300 MW机组CFB锅炉超低排放两级联合脱硫匹配方式试验[J].热力发电,2017,46(6):107-112,118,7.基金项目
中国神华能源股份有限公司科技创新项目资助(SHJT-16-62) Shenhua Science and Technology Innovation Project (SHJT-16-62) （SHJT-16-62）
