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氧气浓度对劣质煤掺混生活污泥燃烧特性的影响

闫云飞 ,  张磊 ,  张力 ,  雷强 ,  张杰

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引用本文: 闫云飞, 张磊, 张力, 雷强, 张杰. 氧气浓度对劣质煤掺混生活污泥燃烧特性的影响[J]. 燃料化学学报, 2013, 41(4): 430-435. shu
Citation:  YAN Yun-fei, ZHANG Lei, ZHANG Li, LEI Qiang, ZHANG Jie. Influence of oxygen concentration on combustion characteristics of inferior coal and sludge mixture[J]. Journal of Fuel Chemistry and Technology, 2013, 41(4): 430-435. shu

氧气浓度对劣质煤掺混生活污泥燃烧特性的影响

    通讯作者: 闫云飞(1978-), 男, 河南平顶山人, 副教授, Tel: 023-65103114, E-mail: yunfeiyan@yahoo.com.cn.
  • 基金项目:

    中央高校基本科研业务费(CDJZR10140011, CDJZR12140034). (CDJZR10140011, CDJZR12140034)

摘要: 采用热重分析方法研究了劣质煤掺混生活污泥在氧气浓度20％、30％、50％、70％、90％条件下的燃烧特性和动力学特性.随着氧气浓度的增加,失重率曲线DTG向低温区移动.对着火温度、失重率峰值以及对应温度、燃尽温度、混合物燃烧综合特性指数进行了对比分析,并对固定碳燃烧阶段的表观活化能进行了计算,结果表明,提高氧气浓度能显著改善燃烧条件,表观活化能随着氧气浓度的提高而增大,随掺混比的增加而减小.定义燃烧促进因子C.E.F.(Combustion Enhancement Factor)表征燃料内外部燃烧促进条件,在固定碳燃烧段,燃烧促进因子随氧气浓度增加迅速增大,表明增大氧气浓度对燃烧具有良好促进作用.燃烧促进因子C.E.F.与表观活化能之间具有动力学补偿效应.

English

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  • 收稿日期:  2012-11-15
  • 网络出版日期:  2013-01-05
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