[1]殷上轶,金保昇,钟文琪,等.加压循环流化床气固流动特性实验研究Ⅰ:颗粒体积分数分布特性[J].东南大学学报(自然科学版),2012,42(2):308-312.[doi:10.3969/j.issn.1001-0505.2012.02.022]
　Yin Shangyi,Jin Baosheng,Zhong Wenqi,et al.Experimental research of gas-solid flow behaviors in pressurized circulating fluidized bed—Ⅰ:solid holdup distribution[J].Journal of Southeast University (Natural Science Edition),2012,42(2):308-312.[doi:10.3969/j.issn.1001-0505.2012.02.022]
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加压循环流化床气固流动特性实验研究Ⅰ:颗粒体积分数分布特性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
42
期数:
2012年第2期
页码:
308-312
栏目:
能源与动力工程
出版日期:
2012-03-20

文章信息/Info

Title:
Experimental research of gas-solid flow behaviors in pressurized circulating fluidized bed—Ⅰ:solid holdup distribution
作者:
殷上轶1;  金保昇1;  钟文琪1;  陆勇1;  邵应娟2;  刘浩2
1 东南大学能源与环境学院,南京 210096; 2 诺丁汉大学能源技术研究所,英国诺丁汉NG7 2RD
Author(s):
Yin Shangyi1;  Jin Baosheng1;  Zhong Wenqi1;  Lu Yong1;  Shao Yingjuan2;  Liu Hao2
1 School of Energy and Environment, Southeast University, Nanjing 210096, China
2 Energy Technologies Research Institute, University of Nottingham, Nottingham NG7 2RD, UK
关键词:
气固两相流;  循环流化床;  加压;  流动特性;  颗粒体积分数
Keywords:
gas-solid two-phase flow;  circulating fluidized bed;  pressurized;  flow characteristics;  solid holdup
分类号:
TK222
DOI:
10.3969/j.issn.1001-0505.2012.02.022
摘要:
针对加压煤气化和化学链燃烧的发展需求,建立了一种加压循环流化床的冷态实验装置,研究了不同操作压力(0.1～0.5 MPa)下,平均粒径为137 μm、密度为2490 kg/m3的Geldart B类颗粒在提升管内的压降和表观颗粒体积分数分布特性.实验结果表明,上升管压降随固气质量比的增大而线性增加,增加的速率随操作压力的增加而增加,且基本不受操作气速和固体通量的影响.加压条件下,表观颗粒体积分数呈上小下大的分布,且随固体通量的增加而增加,随标态表观气速的增加而减小.在固体通量和操作气速一定的情况下,增加操作压力可以显著提高上升管内表观颗粒体积分数,并使其轴向分布更加均匀.
Abstract:
According to the development requirement of pressurized coal gasification and chemical looping combustion, a cold-model experimental facility of a pressurized circulating fluidized bed is built. The pressure drop and the solid holdup distribution of Geldart group B particles with the mean diameter of 137 μm and the density of 2490 kg/m3 are investigated under different operating pressure(0.1 to 0.5 MPa). The experimental results show that the total pressure drop across the riser increases linearly with the increase of the solid-to-air mass flow ratio. The increasing slope increases gradually with the increase of the operating pressure and is hardly affected by the superficial gas velocity and the solid mass flux. At the elevated pressure, the apparent solid holdup is lower at the upper part and higher at the bottom part of the riser. It increases with the increase of the solid mass flux and decreases with the increase of the standard state superficial gas velocity. When the solid mass flux and the standard state superficial gas velocity are certain, with the increase of the operating pressure, the apparent solid holdup in the riser increases and the corresponding axial distribution becomes more uniform.

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备注/Memo

备注/Memo:
作者简介: 殷上轶(1985—),女,博士生; 金保昇(联系人),男,教授,博士生导师,bsjin@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51076029)、国际科技合作资助项目(2010DFA61960).
引文格式: 殷上轶,金保昇,钟文琪,等.加压循环流化床气固流动特性实验研究Ⅰ:颗粒体积分数分布特性[J].东南大学学报:自然科学版,2012,42(2):308-312. [doi:10.3969/j.issn.1001-0505.2012.02.022]
更新日期/Last Update: 2012-03-20