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浙江大学学报(工学版)
能源工程     
高碱金属准东煤结渣特性试验
周永刚,范建勇,李培,王炳辉,赵虹
浙江大学 能源清洁利用国家重点试验室,浙江 杭州 310027
Slagging characteristics of high alkalis Zhundong coal
ZHOU Yong-gang, FAN Jian-yong, LI pei, WANG Bing-hui, ZHAO Hong
State Key Laboratory of Clean Energy Utilization,Zhejiang University, Hangzhou 310027, China
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摘要:
为准确预测高碱金属准东煤结渣特性,利用沉降炉试验台对准东煤、宁煤、褐煤进行结渣特性试验,比较各煤种与实际电厂锅炉燃用时结渣状况的耦合性.试验结果表明,准东煤灰熔融温度tDT和tST分别为1310 ℃和1330 ℃,结渣倾向不强,与新疆部分电厂燃用准东煤后锅炉出现大面积结渣现象不符.沉降炉试验得到准东煤在1250 ℃时,结渣棒即出现较难吹灰的块状渣,在1350 ℃时,出现黑色熔融状油膜,表现为严重结渣倾向.与灰熔融温度相近的宁煤相比,相同温度下准东煤结渣倾向更严重,接近于灰熔融温度较低的褐煤.沉降炉试验预测准东煤以及宁煤、褐煤的结渣倾向性与在实际电厂锅炉燃用时的结渣状况的耦合性较好,是预测准东煤结渣特性的有效方法.
Abstract:
Slagging characteristics of Zhundong coal with high alkalis, Ning coal and lignite were studied on sedimentation furnace and compared with slagging in power plant boilers to see the effectiveness of the predicted result by sedimentation furnace. Experiment results show that its DT (deformation temperature) and ST (softening temperature) respectively at 1310 ℃ and 1330 ℃, Zhundong coal has a medium slagging tendency, which contradicts with large-scale slagging phenomenon of some Zhundong coal burning plants in Xinjiang region. However, when Zhundong coal was tested at sedimentation furnace, on slagging bars formed hard-to-blow lump slag at 1 250 ℃, and black molten ash at 1350 ℃, the latter indicating serious slagging tendency. Under the same temperature, Zhundong coals slagging tendency is more serious than Ning coal with similar ash fusion temperature but approximates that of lignite with low ash fusion temperature. The predicted slagging characteristics of the three coals by the sedimentation furnace accord with the actual slagging situation in plants. Thus experiments on sedimentation furnace prove effective in predicting Zhundong coals slagging characteristics.
出版日期: 2014-11-01
:  TQ 533.9  
作者简介: 周永刚(1974-), 男, 硕士,工程师,从事煤粉燃烧等方面的研究. E-mail: trooper@zju.edu.cn
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引用本文:

周永刚,范建勇,李培,王炳辉,赵虹. 高碱金属准东煤结渣特性试验[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2014.11.021.

ZHOU Yong-gang, FAN Jian-yong, LI pei, WANG Bing-hui, ZHAO Hong. Slagging characteristics of high alkalis Zhundong coal. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2014.11.021.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2014.11.021        http://www.zjujournals.com/eng/CN/Y2014/V48/I11/2061

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