| 常温下料屉式颗粒床过滤除尘技术 |
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| 引用本文： | 郭艳萍,尹少武,王立,宋锐.常温下料屉式颗粒床过滤除尘技术[J].工程热物理学报,2019,40(4):894-899. |
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| 作者姓名： | 郭艳萍 尹少武 王立 宋锐 |
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| 作者单位： | 北京科技大学能源与环境工程学院,北京,100083;北京科技大学能源与环境工程学院,北京100083;北京科技大学冶金工业节能减排北京市重点实验室,北京100083 |
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| 摘 要： | 针对冶金、化工、钢铁、能源等行业含尘烟气排放问题,搭建料屉式颗粒床过滤实验台开展含尘烟气在料屉式颗粒床中的过滤特性研究。在常温下以平均粒径为64μm的粉煤灰为尘粒,研究了过滤风速、颗粒层厚度、滤料粒径、床层结构等因素对过滤效率和床层压降的影响.结果表明过滤效率随过滤风速和滤料粒径的减小、颗粒层厚度的增加而增加,床层压降随过滤风速和颗粒层厚度的减小、滤料粒径的增加而下降;气流自上而下流动时,最上层颗粒层对粉尘捕集量最高,且在表层形成了滤饼层,最上层压降最大.在本文研究范围内,当含尘气体入口浓度为2500 mg/m^3时,最优过滤条件如下:过滤风速为0.3 m/s、滤料粒径为1.0～1.5 mm、颗粒层厚度为140 mm时,含尘气体出口浓度低至40.80mg/m^3,过滤效率达97.76%,床层压降为114 Pa,且压降增长幅度为0.55 Pa/min.
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| 关 键 词： | 料屉式颗粒床 床层压降 过滤效率 分层过滤 |
Experimental Study on Filtration Characteristics of Drawer Type Granular Bed at Room Temperature |
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| GUO Yan-Ping,YIN Shao-Wu,WANG Li,SONG Rui.Experimental Study on Filtration Characteristics of Drawer Type Granular Bed at Room Temperature[J].Journal of Engineering Thermophysics,2019,40(4):894-899. |
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| Authors: | GUO Yan-Ping YIN Shao-Wu WANG Li SONG Rui |
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| Institution: | (School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Energy Conservation and Emission Reduction of Metallurgical Industry,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | GUO Yan-Ping;YIN Shao-Wu;WANG Li;SONG Rui(School of Energy and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Energy Conservation and Emission Reduction of Metallurgical Industry,University of Science and Technology Beijing,Beijing 100083,China) |
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| Keywords: | drawer type granular bed bed pressure drop filtration efficiency layered filtration |
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