| 搅拌釜中自浮颗粒三相体系的混合时间 |
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| 引用本文： | 徐世艾,冯连芳,顾雪萍,王凯. 搅拌釜中自浮颗粒三相体系的混合时间[J]. 高校化学工程学报, 2000, 14(4): 328-333 |
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| 作者姓名： | 徐世艾 冯连芳 顾雪萍 王凯 |
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| 作者单位： | 1. 浙江大学聚合反应工程国家重点实验室,浙江,杭州310027;烟台大学化工系,山东,烟台264005
2. 浙江大学聚合反应工程国家重点实验室,浙江,杭州310027 |
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| 基金项目： | 教育部骨干教师计划，国家自然科学基金!（29734144），山东省自然科学基金!（Y98B07026）联合资助。 |
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| 摘 要： | 液相混合时间是搅拌过程中的重要内容。在釜径３８６ｍｍ的搅拌釜内，采用热电偶温差法考察了搅拌桨型、挡板、等操作因素对自浮颗粒三相搅拌混合的液相混合时间的影响。
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| 关 键 词： | 自浮颗粒 三相体系 混合时间 搅拌釜 |
| 修稿时间： | 1999-07-08 |
Mixing Time in Stirred Tank of Three-phase Gas-Liquid-Floating Particle Systems |
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| XU Shi-ai,FENG Lian-fang,GU Xue-ping,WANG Kai. Mixing Time in Stirred Tank of Three-phase Gas-Liquid-Floating Particle Systems[J]. Journal of Chemical Engineering of Chinese Universities, 2000, 14(4): 328-333 |
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| Authors: | XU Shi-ai FENG Lian-fang GU Xue-ping WANG Kai |
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| Abstract: | The liquid mixing time is of importance for the agitation process. The effects of impeller types, baffles, gas sparger, rotational speed, gas volumetric flow rate and particle fraction on mixing time were systematically investigated in three-phase gas-liquid-floating particle systems by measuring the temperature difference using thermocouples. It was revealed that axial flow was the most important factor for the liquid mixing time. The optimum space between lowest-impeller and tank bottom was 0.3D, the optimum baffle was BGBG, and the optimum sparger diameter was equaled to 0.8D. The correlation equations of mixing times were obtained. For the combination impellers 45SPU 45SPD DT, AAAA or ABAB baffle, larger sparger and moderate sparger, the correlation equation of mixing times was expressed as following: For the combination impellers 45SPU 45SPD WT, AAAA or ABAB baffle, larger sparger and moderate sparger, the correlation equation of mixing times was following: |
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| Keywords: | floating particle three-phase systems mixing time |
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