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热力发电  2015 

660mw机组cfb锅炉设计煤种排放特性试验

, PP. 81-85

Keywords: cfb锅炉,自脱硫效率,燃烧效率,钙硫摩尔比,石灰石,粒径,nox排放

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Abstract:

在3mw循环流化床(cfb)锅炉燃烧试验台上,对某超临界660mw机组cfb锅炉设计煤种进行了试烧试验,研究了锅炉设计煤种的自脱硫性能,添加石灰石对炉内脱硫效率的影响,以及炉内低nox燃烧特性。结果表明:燃用设计煤种时,炉内燃烧较为稳定;设计煤种具有一定的自脱硫效果且与床温有关,床温在860~900℃时,自脱硫效率可达31.6%;添加石灰石后,炉内脱硫效率可提高至95.1%,且脱硫效率与钙硫摩尔比和石灰石粒径有关,且对燃烧效率影响较大;不同负荷下,nox排放量均可维持在较低水平。

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