火电机组锅炉掺烧长焰煤对机组运行影响的研究Research on Effect of Mixed-burning Long Flame Coal on Unit Operation of Thermal Units Boiler
吕洪炳,华晓宇,徐爱民,汤敏华,宋玉彩
LYU Hongbing,HUA Xiaoyu,XU Aimin,TANG Minhua,SONG Yucai
摘要(Abstract)：
为了研究火电机组锅炉掺烧不同比例长焰煤(以麻家梁煤为例)对机组运行中燃烧、结渣、脱硫系统及机组运行经济性的影响,对某发电厂开展了配煤掺烧试验,分析掺烧不同配比麻煤对炉膛温度、锅炉燃烧器结渣的影响以及掺烧麻煤使机组尾部脱硫浆液中毒的根本原因,最后分析计算了掺烧麻煤对锅炉运行经济的改善状况。结果表明:掺烧麻煤降低机组SO_2排放量,其中除尘器不能有效地去除的飞灰中微细颗粒进入到脱硫系统造成脱硫浆液中毒现象;掺烧麻煤可有效地改善锅炉运行经济性。
In order to study the influence of mixed-burning long flame coal(Majialiang coal for instance) in different proportions on combustion, slagging and the desulfurization system during the operation of the unit and the running efficiency of the boiler, coal blending test is conducted in a power plant to analyze the impact of the blended coal on furnace temperature, burner slagging as well as the fundamental reasons of slurry poisoning at the tail of coal-fired boiler. Finally, operation efficiency improvement of the blended Majialiang coal is analyzed and calculated. The result shows that the blended Majialiang coal can reduce SO_2 emissions;the precipitator can not remove fine particles in the flying ash that enters into desulphurization system to poison the slurry. The mixed-burning of Majialiang coal can effectively improve operation economy of boiler.
关键词(KeyWords)：
麻家梁煤;掺烧;结渣;脱硫;经济性
Majialiang coal;blending;slagging;desulfurization;economy
基金项目(Foundation):
作者(Author):
吕洪炳,华晓宇,徐爱民,汤敏华,宋玉彩
LYU Hongbing,HUA Xiaoyu,XU Aimin,TANG Minhua,SONG Yucai
DOI: 10.19585/j.zjdl.2017.02.012
参考文献(References)：
- [1]白存旭,马光耀,张培杰,等.670 t/h锅炉结焦原因分析与燃烧器改造器[J].应用能源技术,2012(9):15-18.
- [2]李守信,纪立国,于军玲.石灰石-石膏湿法烟气脱硫工艺原理[J].华北电力大学学报,2002,29(4):91-94.
- [3]冯俊凯.根据燃煤性质论电站锅炉燃烧方法的发展[J].动力工程,1995(3):34-35.
- [4]武泉,韩成志,王强.脱硫吸收塔浆液失效的原因分析与处理措施[J].电力科学与工程,2011,27(8):57-61.
- [5]朱晓华,章敬泉,李鹏飞,等.钙硫比对烧结烟气循环流化床脱硫效率的影响[J].环境工程,2011,29(3):73-75.
- [6]MAYORAL M C,ANDRES J M,IZQUIERDO M T,et al.Pyrrhotite deposition through thermal projection to simulate iron sulphide slagging in oxy fuel combustion[J].Fuel.2012,101(6):197-204.
- [7]NIU YANGQING,ZHU YIMING,TAN HOUZHANG,et al.Investigations on biomass slagging in utility boiler:Criterion numbers and slagging growth mechanisms[J].Fuel Processing Technology.2014,128(12):499-508.
- [8]任志广,韦英轲,凌鹏.脱硫吸收塔内浆液中毒的原因分析与应对措施[J].电力安全技术,2013,15(4):15-18.
- [9]杨玉环,张媛媛.钙硫比对CFB锅炉炉内脱硫效率的影响研究[J].应用能源技术,2013(6):28-33.
- [10]王晨辉,王敏琪.火力发电厂脱硫废水系统改造研究[J].浙江电力,2015,34(7):53-56.
- [11]XU HAO,HAN ZHE,ZHANG DONGJU,et al.Theoretical elucidation of the dual role of[HMIm]BF4 ionic liquid as catalyst and extractant in the oxidative desulfurization of dibenzothiophene[J].Journal of Molecular Catalysis A:Chemical,2015,398(3):297-303.
- [12]张振杰,王彦海.掺烧褐煤对350 MW机组烟煤锅炉经济性影响研究[J].东北电力技术,2011(3):17-20.
- [13]白少林,李宗绪,张建生.提高大型低挥发分煤锅炉运行经济性研究[J].中国电力,2006,39(9):79-82.
- [14]裘立春,吕新华.优化锅炉燃烧解决结渣问题的实践[J].发电设备,2007,21(3):197-199.