[1]钟文琪,章名耀.基于ARM功率谱分析的喷动流化床压力波动频率特性[J].东南大学学报(自然科学版),2004,34(4):446-450.[doi:10.3969/j.issn.1001-0505.2004.04.006]
 Zhong Wenqi,Zhang Mingyao.Pressure fluctuation frequency characteristics in spout-fluid bed based on ARM power spectrum analysis[J].Journal of Southeast University (Natural Science Edition),2004,34(4):446-450.[doi:10.3969/j.issn.1001-0505.2004.04.006]
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基于ARM功率谱分析的喷动流化床压力波动频率特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第4期
页码:
446-450
栏目:
化学化工
出版日期:
2004-07-20

文章信息/Info

Title:
Pressure fluctuation frequency characteristics in spout-fluid bed based on ARM power spectrum analysis
作者:
钟文琪 章名耀
东南大学洁净煤发电及燃烧技术教育部重点实验室, 南京 210096
Author(s):
Zhong Wenqi Zhang Mingyao
Key Laboratory of Clean Coal Power Generation and Combustion Technology of Minsistry of Education, Southeast University, Nanjing 210096, China
关键词:
流态化 喷动流化床 压力波动 频率特性 ARM功率谱
Keywords:
fluidization spout-fluid bed pressure fluctuations frequency characteristics auto-regressive model power spectrum
分类号:
TQ051.1
DOI:
10.3969/j.issn.1001-0505.2004.04.006
摘要:
在300 mm×30 mm×2 000 mm的喷动流化床煤部分气化试验装置上,采用现代自回归模型(ARM)功率谱分析的方法,系统地考察了喷动气流速、流化气流率、静止床层高度对喷动流化床床层不同位置压力波动主频的影响.结果表明:床层不同位置压力波动的主频随喷动气流速的增大而增大,随静止床高的增大而减小; V型布风板以上床层压力波动主频随流化气流率的增大先增大(Qf/Qmf≤1.0)后减小(Qf/Qmf>1.0),布风板区域内压力波动主频随流化气流率的增大而增大.结合数码CCD图像对结果进行分析,揭示了压力波动主频与床内流动结构的关系,这对于发展喷动流化床技术提供了新的研究方法.
Abstract:
A spout-fluid bed coal partial gasification cold model with its dimension of 300 mm×30 mm×2 000 mm,and a multi-channel pressure sampling system were developed to investigate the pressure fluctuation frequency characteristics. The pressure fluctuation main frequencies at various operating conditions were obtained by modern auto-regressive model(ARM)power spectrum analysis. Effects of spouting gas velocity, fluidizing gas flow rate and static bed height on the main frequency were systematically tested. Experimental results indicate that the main frequency increases with increasing pouting gas velocity, while it decreases with increasing static bed height at any region of the bed. Above the V type gas distributor region,the main frequency increases when the fluidizing gas flow rate increases from 0 to Qf/Qmf≤1. 0, while it decreases when Qf/Qmf>1. 0; in the V type gas distributor region, the main frequency increases with increasing fluidizing gas flow rate. ARM power spectrum analysis and digital charge coupled device(CCD)image processing revealed the relation between flow regime and pressure fluctuation main frequency, which provides a feasible new research method for the development of spout-fluid bed technology.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家重点基础研究发展规划(973计划)资助项目(199902210535).
作者简介: 钟文琪(1979—),男,博士生; 章名耀(联系人),男,教授,博士生导师,zmyao@seu.edu.cn.
更新日期/Last Update: 2004-07-20