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| 螺旋管式二次流混合器的混合性能 | |
| 引用本文： | 刘丹,张忠国,赵可卉,栾兆坤,程言君,李继定,荣立明,宋云. 螺旋管式二次流混合器的混合性能[J]. 化工学报, 2011, 62(10): 2707-2712. DOI: 10.3969/j.issn.0438-1157.2011.10.005 |
| 作者姓名： | 刘丹 张忠国 赵可卉 栾兆坤 程言君 李继定 荣立明 宋云 |
| 作者单位： | 1. 轻工业环境保护研究所,北京,100089 2. 轻工业环境保护研究所,北京100089;清华大学化学工程系,北京100084 3. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085 4. 清华大学化学工程系,北京,100084 |
| 基金项目： | 国家高技术研究发展计划项目(2009AA063901); 国家科学技术部科研院所技术开发研究专项资金项目(2008EG111021,2010EG111021); 北京市优秀人才培养资助项目(20071D1100500388)~~ |
| 摘 要： | 考察了以聚合氯化铝（PACl）作为混凝剂时，混合器的曲率、螺距、管长、水流速率以及混合过程的GT值等对螺旋管式二次流混合器混合性能的影响。研究发现，混合器的管长、水流速率以及曲率对该混合器混合性能具有高度显著影响，而螺距具有显著影响，四者影响的显著性由高到低依次为管长、水流速率、曲率和螺距；实验范围内,二次流管的最佳长度为12 m，且在电中和及卷扫混凝时均出现两个最佳GT值。 |
| 关 键 词： | 混凝 絮凝 混合器 二次流 聚合氯化铝 |
Mixing performance of helical secondary-flow mixer used in coagulation |
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| LIU Dan,ZHANG Zhongguo,ZHAO Kehui,LUAN Zhaokun,CHENG Yanjun,LI Jiding,RONG Liming,SONG Yun. Mixing performance of helical secondary-flow mixer used in coagulation[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(10): 2707-2712. DOI: 10.3969/j.issn.0438-1157.2011.10.005 | |
| Authors: | LIU Dan ZHANG Zhongguo ZHAO Kehui LUAN Zhaokun CHENG Yanjun LI Jiding RONG Liming SONG Yun |
| Affiliation: | LIU Dan1,ZHANG Zhongguo1,2,ZHAO Kehui1,LUAN Zhaokun3,CHENG Yanjun1,LI Jiding2,RONG Liming1,SONG Yun1(1Environment Protection Research Institute of Light Industry,Beijing 100089,China,2Department of Chemical Engineering,Tsinghua University,Beijing 100084,3State Key Laboratory of Environmental Aquatic Chemistry,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China) |
| Abstract: | The effects of curvature,pitch,tube length,flow rate and GT value(the product of root-mean-square velocity gradient and detention time)of a helical secondary-flow mixer used in coagulation with polyaluminum chloride(PACl)on its performance were investigated.The helical secondary-flow mixer was prepared by twining a rubber tube round a cylinder,and kaolin suspension was used as simulated wastewater for this experiment.It was found that tube length,curvature and flow rate of the mixer had highly significant i... |
| Keywords: | coagulation flocculation mixer secondary flow polyaluminum chlor |
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