微细颗粒强化氧气吸收实验

doi:10.3969/j.issn.0438-1157.2013.04.026

化工学报 ›› 2013, Vol. 64 ›› Issue (4): 1306-1311.DOI: 10.3969/j.issn.0438-1157.2013.04.026

微细颗粒强化氧气吸收实验

姜家宗^1,2, 赵博¹, 曹萌¹, 禚玉群¹, 王淑娟¹

1. 清华大学热科学与动力工程教育部重点实验室,二氧化碳资源化利用与减排技术北京市重点实验室,北京 100084;
2. 华北电力大学,北京102206

收稿日期:2012-07-21 修回日期:2012-10-17 出版日期:2013-04-05 发布日期:2013-04-05
通讯作者: 赵博
作者简介:姜家宗(1982—),男,博士研究生。
基金资助:
国家自然科学基金项目(50906044)。

Fine particle enhanced oxygen absorption

JIANG Jiazong^1,2, ZHAO Bo¹, CAO Meng¹, ZHUO Yuqun¹, WANG Shujuan¹

1. Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Beijing Key Laboratory of CO₂ Utilization and Reduction Technology, Tsinghua University, Beijing 100084, China;
2. North China Electric Power University, Beijing 102206, China

Received:2012-07-21 Revised:2012-10-17 Online:2013-04-05 Published:2013-04-05
Supported by:
supported by the National Natural Science Foundation of China(50906044).

摘要/Abstract

关键词: 活性炭颗粒, 气液传质, 强制氧化, 氧气吸收

Abstract: Gas-liquid mass transfer was studied during forced sulfite oxidation in the presence of active carbon particles in a stirred tank.The influence of temperatures from 30℃ to 50℃, solid loading of fine particles from 0 to 1.0 kg·m^-3, stirring speeds from 50 to 400 r·min^-1, and particle sizes on average O₂ gas absorption rate were studied.Experimental results show that active carbon particles could improve gas-liquid mass transfer remarkably.At 30℃, with the increase of solid loading of micro-particles, the oxygen absorption enhancement factor increases to a maximum value at the solid loading of 0.6 kg·m^-3, and then decreases due to the increase of gas-liquid mass transfer resistance.For active carbon particles, the mass enhancement factor is much higher with ultrasonic processing for particle size of 1 μm.The oxygen absorption rate and absorption enhancement factor increase with the increase of stirring speed due to the acceleration of surface renewal frequency.The enhancement factor decreases as temperature increases while absorption rate increases.The result indicates that the effect of temperature on the mass transfer enhancement is stronger than the effect of fine particles.

Key words: active carbon particles, gas-liquid mass transfer, forced oxidation, oxygen absorption

中图分类号:

TK123

姜家宗, 赵博, 曹萌, 禚玉群, 王淑娟. 微细颗粒强化氧气吸收实验[J]. 化工学报, 2013, 64(4): 1306-1311.

JIANG Jiazong, ZHAO Bo, CAO Meng, ZHUO Yuqun, WANG Shujuan. Fine particle enhanced oxygen absorption[J]. CIESC Journal, 2013, 64(4): 1306-1311.

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微细颗粒强化氧气吸收实验

Fine particle enhanced oxygen absorption

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