中国电力2017，Vol.50Issue(3)：77-82,6.DOI:10.11930/j.issn.1004-9649.2017.03.077.06
制粉方式及煤种对煤炭掺烧锅炉热力性能影响与方案优化
Impact of Coal Types and Pulverizing Methods on the Thermal Performance of Blending Coal-Fired Boilers and Their Operational Optimization
周永刚 1王欢 1王景 2李培 1赵虹1
作者信息
- 1. 浙江大学能源清洁利用国家重点实验室,浙江杭州 310027
- 2. 华能沁北发电厂,河南济源454662
- 折叠
摘要
Abstract
The long-term operation with off-designed coal types brings a power plant significant safe and economic problems on its boiler operation.Aiming at solving the problem,tests are conducted to understand the operational status of the units,to analyze the coal blending problem and to optimize the combustion schemes according to the adaptability of the boiler to different coal types.The test results show that the coal blending should not only simply depend on the calorific value or the volatile contents the unit adaptability to different coal types and the influence of coal type dissimilarity on combustion characteristics should also be considered.In the new coal blending scheme,the anthracite (V~=9.23％) of Pulverizer C in phase I project is swapped with the lean coal of Pulverizer A in phase Ⅱ project,which increases the average volatile contents and reduces the coal type dissimilarity for the phase I project.After the optimization,the vibration of the pulverizer gets better.The average boiler efficiency of the units gets a 0.62 percent improvement and the average coal consumption for power generation gets a 0.65 g/(kW· h) decrease.关键词
机组类型/煤炭掺烧/锅炉效率/飞灰含碳量/煤粉细度Key words
type of unit/blending coal combustion/boiler efficiency/carbon content of fly ash/fineness of pulverized coal分类
信息技术与安全科学引用本文复制引用
周永刚,王欢,王景,李培,赵虹..制粉方式及煤种对煤炭掺烧锅炉热力性能影响与方案优化[J].中国电力,2017,50(3):77-82,6.
