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The combustion characteristics and application of sludge mixed with straw
Author(s): 
Pages: 71-75
Year: Issue:  1
Journal: Renewable Energy Resources

Keyword:  污泥 秸秆 热重分析 燃烧特性;
Abstract: 利用热重分析法对某城市污泥和秸秆及其混合样的燃烧特性进行了分析研究,结果表明,在加热速率20℃/min,温度为20~1 000℃,空气气氛下,污泥和秸秆及其混合样燃烧的失重特性和燃烧性能存在差异。单一污泥试样的着火温度为334.2℃,试样着火后,燃烧速率并不高,不能快速形成较高的燃烧温度,且燃烧过程不均匀。污泥中掺入秸秆后,秸秆中的挥发分在低温区大量析出和燃烧,增加了反应的剧烈程度,提高了混合样的燃烧稳定性和燃尽水平。随着秸秆掺混比例的增加,混合试样的着火点温度明显降低、最大燃烧速率出现的温度提前、可燃性指数逐渐增加。当秸秆的掺混比为20%,混合样品的低位发热量达到13 911 kJ/kg。
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