热力发电2024，Vol.53Issue(10)：144-150,7.DOI:10.19666/j.rlfd.202403050
循环流化床炉生物质掺烧降碳技术研究
Study on carbon emission reduction via co-firing biomass in circulating fluidized bed boilers
吴丽萍 1李民杰 2陈思雨 2高江鹏 1金余其2
作者信息
- 1. 新疆宇澄热力股份有限公司,新疆 克拉玛依 834000
- 2. 浙江大学能源清洁利用国家重点实验室,杭州 310027
- 折叠
摘要
Abstract
Decarbonization in thermal power industry is directly related to the realization of the"double carbon"target,while the circulating fluidized bed boiler has the advantages of wide fuel applicability and can carry out large-scale fuel blending.Biomass fuel is a renewable"zero-carbon"energy source,its blending can greatly reduce the carbon emissions of thermal power plants.Based on the existing circulating fluidized bed boilers and coal-fired conditions,biomass co-firing tests were conducted,and comprehensively evaluation was also carried out on combustion stability,pollutant emissions,and thermal efficiency.The co-firing experiments results showed that,as the co-firing ratio increased,the coal consumption rate per unit of steam production significantly decreased,with stable combustion conditions maintained throughout the process.Under co-firing conditions,the consumption of limestone decreased to approximately 4.5 kg for 1 ton steam production,with SO2 emissions meeting the standards.Blending raised the furnace temperature,elevated the exhaust temperature,increased the fly ash content,and slightly increased the heat loss.Through regulating the air volume ratio,material layer pressure difference and excess air coefficient,the overall thermal efficiency closely approached the design value.Under long-term operating conditions,the blending ratio of biomass reached about 30%,and the emissions of SO2 and NOx were qualified.The tail heat exchanger was not corroded obviously,and the CO2 emission reduction amount reached about 480 kg for 1 ton steam production.关键词
循环流化床/生物质/碳排放Key words
circulating fluidized bed/biomass/carbon emissions引用本文复制引用
吴丽萍,李民杰,陈思雨,高江鹏,金余其..循环流化床炉生物质掺烧降碳技术研究[J].热力发电,2024,53(10):144-150,7.
