| 高碳团聚飞灰的燃烧特性 |
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| 引用本文： | 李登新,吕俊复,刘青,张建胜,岳光溪.高碳团聚飞灰的燃烧特性[J].中国电机工程学报,2004,24(11):213-216. |
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| 作者姓名： | 李登新 吕俊复 刘青 张建胜 岳光溪 |
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| 作者单位： | 1. 东华大学环境学院,上海市,长宁区,200051;清华大学热能工程系,北京市,海淀区,100084
2. 清华大学热能工程系,北京市,海淀区,100084 |
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| 基金项目： | 国家973高技术基金项目(G1999022204)~~ |
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| 摘 要： | 高碳飞灰与水混合并直接送入流化床,飞灰团聚,粒度增加,其燃烧特性对于飞灰再燃烧至关重要。该文利用热天平研究一种高碳飞灰及其团聚颗粒的燃烧性能。研究表明, 团聚飞灰和原灰的燃烧性能一致。一元动力学分析表明,团聚飞灰的表观活化能为106.4kJ/mol,频率因子为2.5106s-1,其着火温度较高。另外,燃烧温度、空气流量、升温速率和试样量影响飞灰最大燃烧速率和燃尽时间。
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| 关 键 词： | 团聚 飞灰 燃烧特性 热天平 试样量 混合 流化床 燃尽 再燃 燃烧性能 |
| 文章编号： | 0258-8013(2004)11-0213-04 |
| 修稿时间： | 2004年3月18日 |
STUDY OF COMBUSTION OF FLASH HYDRATED AND AGGLOMERATED FLY ASH |
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| LI Deng-xin,L?Jun-fu,LIU Qing,ZHANG Jiang-sheng,YUE Guang-xi.STUDY OF COMBUSTION OF FLASH HYDRATED AND AGGLOMERATED FLY ASH[J].Proceedings of the CSEE,2004,24(11):213-216. |
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| Authors: | LI Deng-xin L?Jun-fu LIU Qing ZHANG Jiang-sheng YUE Guang-xi |
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| Affiliation: | LI Deng-xin1,2,L?Jun-fu2,LIU Qing2,ZHANG Jiang-sheng2,YUE Guang-xi2 |
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| Abstract: | CFB fly ash from separators was mixed with water or water and additives of 363K by use of a blender. Then, this compound of fly ash and water or additives was pumped into combustion chamber of CFB by sludge pump. Because of the temperature of flume gas is higher in CFB, the fly ash was hydrated fast and agglomerated in the same time. Through this process, the size of agglomerating fly ash is large than the original particle. The combustion of agglomerated fly ash was studied by thermal balance (TA2100). It is obvious that weight loss of original and agglomerated fly ash is not different. But, the autogenous ignition temperature of fly ash is high and the apparent activation energy and of agglomerating fly ash is 106.4kJ/mol. The effect of combustion conditions on burning-out time and maximum burning rate is researched, too. |
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| Keywords: | Thermal power engineering Fly ash CFB Hydration Agglomeration |
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