| 加压条件下卧式搅拌釜的气液传质特性 |
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| 引用本文： | 陈明光,孙建中,唐福瑞,顾培韵,潘祖仁.加压条件下卧式搅拌釜的气液传质特性[J].化工学报,1988,39(6):737-744. |
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| 作者姓名： | 陈明光 孙建中 唐福瑞 顾培韵 潘祖仁 |
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| 作者单位： | 浙江大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系 杭州
,杭州
,杭州
,杭州
,杭州 |
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| 摘 要： | 本文选用O_2-KCl水溶液体系,采用动态物理吸收法对卧式搅拌釜加压条件下的气液传质容易系数进行了测定.釜液中的氧浓度变化由氧电极跟踪测定.通过改变气相压力、搅拌转速和液含率,分别考察了这些因素对卧式搅拌釜气液传质特性的影响.结果表明,高压下的液相传质容量系数有所提高.与常压相比,在液含率为0.5、桨径比为0.8、采用六叶平直透平桨叶搅拌的条件下,若压力升到36atm(1atm=101.325kPa),k_La将增加20%左右.
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Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions |
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| Chen Mingguang,Sun Jianzhong,Tan Furui,Gu Peiyu and Pan Zuren.Mass Transfer Characteristics of a Horizontal Agitated Vessel under Pressurized Conditions[J].Journal of Chemical Industry and Engineering(China),1988,39(6):737-744. |
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| Authors: | Chen Mingguang Sun Jianzhong Tan Furui Gu Peiyu and Pan Zuren |
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| Affiliation: | Chen Mingguang,Sun Jianzhong,Tan Furui,Gu Peiyu and Pan Zuren
(Department of Chemical Engineering,Zhejiang University,Hangzhou) |
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| Abstract: | Volumetric mass transfer coefficient kL a was determined by the unsteady state oxygen absorption method for a O2-KCl solution system. Changes of the dissolved oxygen concentration in the bulk liquor with time was monitored through a dissolved oxygen probe.
Various effects, such as gas pressure, impeller rotational speed and liquid ratio, on the mass transfer coefficient kL a were investigated. It was found that at high pressures, with the increase of gas phase density, gases tended to form small bubbles in the liquid phase, and as a result a higher rnsss transfer coefficient in the agitated vessel was visualized. When the liquid ratio was 0.5, and the employed tunbins impeller diameter ratio 0.8, about 20% increase, in the value of kLa was obtained when operating under a pressure of 36 atm. instead of atmospheric. |
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