[1]张宇博,延 禹,胡芳芳,等. 低低温系统中粉尘颗粒团聚特性研究[J].热力发电,2018,(预出版):1-7.[doi:10.19666/j.rlfd.201808142]
 ZHANG Yubo,YAN Yu,HU Fangfang,et al.Experimental Study on Agglomeration Characteristics of Ash Particles in Low-Low Temperature Flue Gas System[J].Thermal Power Generation,2018,(预出版):1-7.[doi:10.19666/j.rlfd.201808142]
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 低低温系统中粉尘颗粒团聚特性研究()
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《热力发电》[ISSN:1000-9035/CN:22-1262/O4]

卷:
期数:
2018年预出版
页码:
1-7
栏目:
出版日期:
2018-12-28

文章信息/Info

Title:
Experimental Study on Agglomeration Characteristics of Ash Particles in Low-Low Temperature Flue Gas System
作者:
 张宇博1延 禹2胡芳芳23党黎军1邓 磊2车得福2
 1.西安热工研究院有限公司,陕西 西安 710054;
2.西安交通大学多相流国家重点实验室,陕西 西安 710049;
3.中国能源建设集团陕西省电力设计院有限公司,陕西 西安 710054
Author(s):
 ZHANG Yubo1 YAN Yu2 HU Fangfang23 DANG Lijun1 DENG Lei2 CHE Defu2
 1. Xi’an Thermal Power Research Institute Co., LTD., Xi’an 710054, China;
2. State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
3. China Energy Engineering Group Shaanxi Electric Power Design Institute Co., LTD. , Xi’an 710054, China
关键词:
低低温烟气系统粉尘颗粒物硫酸酸雾吸附团聚积灰堵塞省煤器除尘器
分类号:
TK09
DOI:
10.19666/j.rlfd.201808142
文献标志码:
A
摘要:
低低温电除尘技术具有良好的经济性和环保性,在我国燃煤发电机组中得到了广泛应用。由于低低温条件下粉尘颗粒物的团聚效应,实际运行中低低温省煤器和电除尘器容易出现积灰堵塞问题。本文搭建固定床吸附实验台,研究了颗粒物吸附硫酸酸雾后的团聚现象,以及各因素对团聚的影响程度。结果表明:吸附反应后单个颗粒物存在4种表面形态,颗粒物间存在4种团聚形态;硫酸酸雾在颗粒物表面产生一层液膜,使颗粒物间黏附力增强,强化了团聚效果;初始阶段主要发生小颗粒在大颗粒表面的黏附以及小颗粒之间的凝并,随后发生大颗粒之间的团聚;温度降低会提升颗粒物团聚的效果,但提升程度与吸附时间有关;在低低温系统中,温度的小幅变动将会引起团聚效果很大的改变;随着颗粒物粒径的增大,颗粒物的团聚效果减弱,粒径增大至91 μm以上时几乎不发生团聚。

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备注/Memo

备注/Memo:
张宇博(1985-),男,博士,高级工程师,主要研究方向为燃煤锅炉清洁燃烧、锅炉技术监督等,zhangyubo@tpri.com.cn。
更新日期/Last Update: 2018-09-21