| 棉秆流化床燃烧的成灰特性和床料选择 |
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| 引用本文： | 孙志翱,金保升,章名耀,刘仁平,张勇.棉秆流化床燃烧的成灰特性和床料选择[J].太阳能学报,2008,29(6). |
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| 作者姓名： | 孙志翱 金保升 章名耀 刘仁平 张勇 |
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| 作者单位： | 东南大学能源与环境学院,南京,210096 |
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| 摘 要： | 介绍了山东某地棉秆的物理、化学特性,在0.2MWth试验装置上研究了棉秆流化床燃烧时不同床高的温度分布,利用ICP技术对灰的元素成分进行了分析,发现棉秆流化床燃烧时部分碱金属以挥发态析出,其中钾元素析出比例最大.飞灰中碱金属成分含量较高,对流受热面的沾灰可能性很大.该文中重点对棉秆流化床燃烧时两种床料:石英砂和高铝矾土的烧结特性进行了研究,通过使用SEM/EDX对两种床料燃烧前后微观结构和元素成分的变化进行了对比,结果发现石英砂床料颗粒表面形成了低温共熔混合物,烧结非常严重,并最终影响到正常流化,高铝矾土床料经长时间运行没有发现烧结现象,因此,棉秆流化床燃烧选择弱酸性的高铝矾土床料为宜.试验结果为棉秆流态化燃烧锅炉设计和运行提供了理论基础.
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| 关 键 词： | 棉秆 流化床燃烧 碱金属 床料 烧结 棉秆 流化床燃烧 成灰特性 床料 选择 FLUIDIZED BED COMBUSTION COTTON STALK MATERIAL CHARACTERISTICS 理论 设计和运行 燃烧锅炉 流态化 试验 弱酸性 现象 长时间 影响 严重 |
STUDY ON ASH CHARACTERISTICS AND BED MATERIAL OF COTTON STALK COMBUSTION IN A FLUIDIZED BED |
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| Sun Zhiao,Jin Baosheng,Zhang Mingyao,Liu Renping,Zhang Yong.STUDY ON ASH CHARACTERISTICS AND BED MATERIAL OF COTTON STALK COMBUSTION IN A FLUIDIZED BED[J].Acta Energiae Solaris Sinica,2008,29(6). |
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| Authors: | Sun Zhiao Jin Baosheng Zhang Mingyao Liu Renping Zhang Yong |
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| Affiliation: | Sun Zhiao Jin Baosheng Zhang Mingyao Liu Renping Zhang Yong (School of Energy , Environment,Southeast University,Nanjing 210096,China) |
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| Abstract: | The physical and chemical properties of the cotton stalk in a certain area of Shandong province were reported in the paper.The fluidized bed combustion of cotton stalk was investigated in a pilot test apparatus.The ultimate analysis of the ash by ICP,and the effects of the ultimate analysis of ash deposition were emphatically studied.The high content of alkali metals and chlorine in cotton stalk is potentially harmful elements with regard to corrosion.The agglomeration of bed material is a serious problem d... |
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| Keywords: | cotton stalk fluidized bed combustion alkali metal bed material agglomeration |
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