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O2/CO2气氛下稻秆添加磷酸二氢铵对固钾及灰熔融特性的研究

王茜 ,  韩奎华 ,  李辉 ,  齐建荟 ,  路春美

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引用本文: 王茜, 韩奎华, 李辉, 齐建荟, 路春美. O2/CO2气氛下稻秆添加磷酸二氢铵对固钾及灰熔融特性的研究[J]. 燃料化学学报, 2015, 43(8): 955-960. shu
Citation:  WANG Qian, HAN Kui-hua, LI Hui, QI Jian-hui, LU Chun-mei. Influence of ammonium dihydrogen phosphates additive on potassium fixation capacity and ash fusibility for rice straw combustion in an O2/CO2 atmosphere[J]. Journal of Fuel Chemistry and Technology, 2015, 43(8): 955-960. shu

O2/CO2气氛下稻秆添加磷酸二氢铵对固钾及灰熔融特性的研究

    通讯作者: 韩奎华,E-mail:hankh@163.com
  • 基金项目:

    国家自然科学基金(51206096) (51206096)

    济南高校自主创新基金(201401275)。 (201401275)

摘要: 研究了21%O2/79%CO2气氛下,磷酸二氢铵对稻秆不同温度下的固钾能力及对灰熔融性的影响。利用电感耦合等离子体发射光谱(ICP-AES)、X射线衍射(XRD)以及扫描电子显微镜(SEM)等检测手段,对稻秆燃烧灰中K元素含量、产物物相以及微观形貌进行分析。固定床燃烧固钾实验表明,添加NH4H2PO4能够有效提高稻秆固钾率,900℃下稻秆自身固钾率为14.65%,添加NH4H2PO4后固钾率为68.79%,可以有效抑制生物质燃烧过程中碱金属以气态形式析出,并缓解了灰结渣现象。700℃燃烧条件下NH4H2PO4和钾反应的主要产物为KPO3;900℃下反应的主要产物为高熔点物质K2CaP2O7,从微观形貌可以看出NH4H2PO4能够抑制灰颗粒的烧结,添加NH4H2PO4能有效提升稻秆灰熔点。

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  • 收稿日期:  2015-03-19
  • 网络出版日期:  2015-07-01
通讯作者: 陈斌, bchen63@163.com
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