Experiment and simulation on the pyrite removal from the recirculating load of pulverizer with a dilute phase gas-solid fluidized bed
Experiment and simulation on the pyrite removal from the recirculating load of pulverizer with a dilute phase gas-solid fluidized bed
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稀相气固流化床磨粉机循环负荷去除黄铁矿的实验与模拟
DOI：
10.1016/j.ijmst.2013.04.003
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发表时间：
2013-03-01
影响因子：
11.8
通讯作者：
Qing, Liu
中科院分区：
文献类型：
--
作者：
Shuai, Wang;He Yaqun;Qing, Liu
为了降低燃煤电站的能源消耗和后续的大气污染，在分析粉碎机分级机循环负荷中颗粒粒度和密度分布的基础上，对电厂取样物料进行了稀相流化床除黄铁矿等矿物的分离实验，并对分离过程进行了数值模拟。结果表明，最小流化速度为1.62 cm/s。物料中的黄铁矿和其他矿物被分离。上层和底层物料灰分分别占33.34%和73.42%，硫含量分别占1.12%和8.96%。扫描电镜和光谱学测试表明，底部物质中的硫以黄铁矿的形式存在。对含气固两相和颗粒运动的稀相分离床流场形态进行了数值模拟，验证了实验结果。(C) 2013年Elsevier B.V.代表中国矿业大学出版。
In order to reduce the energy consumption and subsequent air pollution of coal-fired power station, based on the analysis to size and density distribution of particles from the recirculating load of the classifier of pulverizer, the separation experiment on sampling material from power plant with a dilute phase fluidized bed to remove pyrite and other minerals and numerical simulation on the separation process were done. The results show that the minimum fluidization velocity is 1.62 cm/s. Pyrite and other minerals in the material are separated. Ash of the upper and bottom layer material account for 33.34% and 73.42% respectively and sulfur content occupy 1.12% and 8.96% respectively. Scanning electron microscopy and spectroscopy tests show that sulfur in the bottom material exist in the form of pyrite. Numerical simulation on the flow field form of the dilute phase separation bed with gas-solid two phase and particle motion verifies the experimental results. (C) 2013 Published by Elsevier B.V. on behalf of China University of Mining & Technology.