Mass transfer performance of enhanced CO2 absorption in swirling flow field

被引：0

作者：

Yu, Zhiyuan ^{[1
]}

Zhao, Bingtao ^{[1
]}

He, Shushen ^{[1
]}

机构：

[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai

来源：

Huagong Xuebao/CIESC Journal | 2015年 / 66卷 / 03期

基金：

中国国家自然科学基金; 上海市自然科学基金;

关键词：

Absorption; Carbon dioxide; Gas-liquid flow; Mass transfer; Swirling flow;

D O I：

10.11949/j.issn.0438-1157.20141353

中图分类号：

学科分类号：

摘要：

To intensify the CO2 absorption process, a reactor based on swirling and multi-staged liquid-gas contact was used to examine the mass transfer performance of long-concentration span CO2 (2.5%-15%) capture with NaOH solution. The effects of absorbent concentration, absorbent flow rate, CO2 concentration, gas flow rate and reaction temperature on volumetric overall mass transfer coefficient (Kga) were experimentally investigated. The mass transfer coefficient varied from 4.53×10-5 to 9.22×10-5 kmol·m-3·s-1·kPa-1 under the experimental conditions. Compared with axial spray with double stages and swirling spray with single stage, swirling-based multi-staged spray reactor was able to effectively enhance the performance of absorption of long-concentration span CO2. A high concentration and a high flow rate of the absorbent, and a high reaction temperature helped to increase Kga. Kga increased with the increase of CO2 concentration, but decreased while CO2 concentration was more than 5%. Kga increased and then stabilized with increase of gas flow rate. ©, 2015, Chemical Industry Press. All right reserved.

引用

页码：1012 / 1018

页数：6

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