两种高钠煤的掺烧结渣特性对比实验

Comparative experiments of two high sodium coal mixed burning slagging characteristics

  • 摘要: 新疆高钠煤储量大,且是良好的动力煤,然而其燃烧过程中结渣沾污严重,对锅炉的安全运行和经济性产生了影响。基于一维炉结渣实验台,对比分析新疆两种高钠煤的结渣特性,经过实验得出:在相同的容积热负荷下,准东高钠煤结渣比大南湖高钠煤要严重;大南湖高钠煤较准东高钠煤更难通过掺烧低钠煤来改善结渣;两种高钠煤均易通过掺烧煤矸石来改善结渣状况且最佳掺烧比例为10%。该实验结果对新疆地区燃用高钠煤提供一定的参考。

     

    Abstract: Xinjiang high sodium coal is a good steam coal with large reserves. However,the slagging of combustion process is a serious pollution,and influences the safe operation and economics of the boiler. This paper conducted is the study based on one dimensional furnace slagging test bench to compare and analyze the slagging characteristics of two different higher-sodium coals,through experiments. The result shows that in the same volume heat load,the higher- sodium coal of Zhundong has a high slagging characteristics than that of Dananhu high sodium coal. Dananhu coal is harder than Zhundong coal to reduce slagging by burning mixed low sodium coals. The two high sodium coals can be mixed with coal gangue to improve the slagging condition and the best ratio was 10% . The experimental results provide some guidance for the use of high sodium coal in Xinjiang area.

     

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