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低挥发分水煤浆比精煤水煤浆在价格上有明显的优势,在锅炉上燃用水煤浆除考虑着火和燃烧稳定性外,结渣特性是另一重要的影响锅炉安全经济运行的因素。文中就大型锅炉燃烧低挥发分水煤浆,利用硅碳棒进行结渣试验,采用单一结渣指标,通过对渣层厚度、沉积量和沉积速率的变化分析及X-射线衍射图谱和扫描电镜分析,模糊综合评判模型,获得低挥发分水煤浆燃烧结渣特性。结果表明,低挥发分水煤浆的结渣情况在可接受的范围内。
Low volatility of water-soluble coal-water slurry than coal-water coal-water slurry in the obvious advantages of the price, in the boiler combustion of coal-water slurry in addition to considering the fire and combustion stability, the slagging characteristics is another important impact on the boiler safe and economical operation factor. In this paper, a large boilers combustion of low volatile water slurry, the use of silicon carbide rod slagging test, using a single slagging indicators through the slag layer thickness, sedimentation rate and deposition rate changes and X-ray diffraction patterns and scanning electron microscopy Analysis and fuzzy comprehensive evaluation model to obtain low volatility coal-water slurry combustion slagging characteristics. The results show that the slagging of low-volatile coal water slurry is within the acceptable range.