石油化工高等学校学报

石油化工高等学校学报 ›› 2012, Vol. 25 ›› Issue (1): 1-7.DOI: 10.3969/j.issn.1006-396X.2012.01.001

• 石油化工 •    下一篇

反应条件对DEA吸收CO2 的影响研究

朱玲1,於俊杰2,刘世鹏1   

  1. 1.北京石油化工学院环境工程系;2.环境保护部环境与经济政策研究中心
  • 收稿日期:2011-12-06 修回日期:1900-01-01 出版日期:2012-02-25 发布日期:2012-02-25
  • 作者简介:朱玲（１９７５－），女，江苏靖江市，副教授，博士。
  • 基金资助:
    北京市属市管高等学校人才强教计划资助项目（ＰＨＲ２０１１０７１４７，ＰＨＲ２０１１０７２１３，ＰＨＲ２０１１－０８３６５）

The Effect of Reaction Condition on the CO2 Absorption With DEA Solution

  1. 1.Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, P.R. China; 
    2. Policy Research Center for Environment and Economy, Ministry of Environmental Protection, Beijing 100029, P.R. China
  • Received:2011-12-06 Revised:1900-01-01 Published:2012-02-25 Online:2012-02-25

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摘要： 在自行设计的化学吸收-热解吸中试实验系统上，以DEA（二乙醇胺）水溶液为吸收液，ＣＯ２为处理对象，分别考察了吸收液体积分数、液气体积比、ＣＯ２体积分数和空塔气速对ＣＯ２脱除效率的影响，并计算了吸收液ＣＯ２摩尔负荷、总传质系数和填料层单位压降的变化。实验结果表明，液相传质阻力即吸收液浓度和液气体积比增加对ＣＯ２脱除起促进作用效果，最佳操作条件为DEA吸收液体积分数10%～20%、液气体积比为0.125；而气相传质阻力即ＣＯ２体积分数和空塔气速增加对吸收效果有负影响。此外，气相条件对ＣＯ２脱除效果的影响远比液相条件小得多，说明传质阻力主要在液相侧。

关键词: 化学吸收 , ＣＯ２ , 　二乙醇胺 , 反应条件

Abstract: A set of chemical absorption-thermal desorption system with pilot scale, which were designed by ourselves, was used to study the performance of DEA aqueous solution for the removal of CO2. The effects of DEA concentration, liquid-gas ratio, CO2 concentration and gas velocity in empty tower on CO2 removal efficiency were investigated respectively. And some operational parameters were also calculated, such as the mole loading of liquid absorbent, the overall mass transfer coefficient and the unit pressure drop of packing layer. Experimental results show that liquid phase mass transfer resistance, i.e., the concentration of DEA solution and liquid gas ratio, can promote the removal process. The optimum parameters are selected as DEA concentration is between from 10% to 20%, and the liquid gas ratio is controlled at 0.125. While the gas phase mass transfer resistance including CO2 content and gas velocity in empty tower may display adverse impact on the absorption. In addition, the effect of gas phase on the removal of CO2 is much smaller than the liquid phase, indicating that the mass transfer resistance is mainly in the liquid side.

Key words:

Chemical absorption,   , Carbon dioxide,   ,  Diethano lamine ( DEA ),    ,  , Reaction conditionmso-ascii-font-family: Calibri, mso-ascii-theme-font: minor-latin, mso-fareast-font-family: 宋体, mso-fareast-theme-font: minor-fareast, mso-hansi-font-family: Calibri, mso-hansi-theme-font: minor-latin">

引用本文

朱玲,於俊杰,刘世鹏. 反应条件对DEA吸收CO2 的影响研究[J]. 石油化工高等学校学报, 2012, 25(1): 1-7.

ZHU Ling,YU Jun-jie,LIU Shi-peng. The Effect of Reaction Condition on the CO2 Absorption With DEA Solution[J]. Journal of Petrochemical Universities, 2012, 25(1): 1-7.

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