基于魏格纳分布的鼓泡流化床中结焦早期诊断

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基于魏格纳分布的鼓泡流化床中结焦早期诊断

张建胜^a; 吕俊复^a; 王昕^a; 张海^a; 岳光溪^a, SUDA Toshiyuki^b; SATO Junichi^b

a Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
b Ishikawajima-Harima Heavy Industries Co., Ltd., Japan

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-02-28 发布日期:2007-02-28
通讯作者: 张建胜

Characterization of pressure signals in fluidized beds loaded with large particles using Wigner distribution analysis: Feasibility of diagnosis of agglomeration

ZHANG Jiansheng^a; LÜ Junfu^a; WANG Xin^a; ZHANG Hai^a; YUE Guangxi^b; SUDA Toshiyuki^b; SATO Junichi^b

a Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
b Ishikawajima-Harima Heavy Industries Co., Ltd., Japan

Received:1900-01-01 Revised:1900-01-01 Online:2007-02-28 Published:2007-02-28
Contact: ZHANG Jiansheng

摘要/Abstract

摘要： An experimental verification is reported on the early predicting index of agglomeration in bubbling fluidized bed. Coarse quartz sand, which has the same density but larger diameter than the bed material, was used to simulate the initial agglomerated particle. Wigner distribution was used to analyze the pressure fluctuation of the tested bed, and the average amplitude of local domain frequency (LDF) and local peak weighted average frequency (LPWA) under different operating conditions were measured and compared. The results showed that the LDF is sensitive to the agglomeration phenomena and had quick response to the incipient agglomeration in fluidized beds. It can be concluded from the results that these two parameters could be taken as the characteristic indexes to the ag-glomeration in fluidized beds.

关键词: bubbling fluidized bed;pressure fluctuation;agglomeration;Wigner distribution

Abstract: An experimental verification is reported on the early predicting index of agglomeration in bubbling fluidized bed. Coarse quartz sand, which has the same density but larger diameter than the bed material, was used to simulate the initial agglomerated particle. Wigner distribution was used to analyze the pressure fluctuation of the tested bed, and the average amplitude of local domain frequency (LDF) and local peak weighted average frequency (LPWA) under different operating conditions were measured and compared. The results showed that the LDF is sensitive to the agglomeration phenomena and had quick response to the incipient agglomeration in fluidized beds. It can be concluded from the results that these two parameters could be taken as the characteristic indexes to the ag-glomeration in fluidized beds.

Key words: bubbling fluidized bed, pressure fluctuation, agglomeration, Wigner distribution

张建胜, 吕俊复, 王昕, 张海, 岳光溪,SUDAToshiyuki, SATOJunichi. 基于魏格纳分布的鼓泡流化床中结焦早期诊断[J]. , DOI: .

ZHANGJiansheng,LÜ,Junfu, WANGXin,ZHANGHai,YUEGuangxi,SUDAToshiyuki,SATOJunichi. Characterization of pressure signals in fluidized beds loaded with large particles using Wigner distribution analysis: Feasibility of diagnosis of agglomeration[J]. , DOI: .

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