Optimum conditions for the capture of carbon dioxide with a bubble-column scrubber

被引：21

作者：

Chen, Pao-Chi ^{[1
]}

Huang, Chen-Huai ^{[1
]}

Su, Ting ^{[2
]}

Chen, Hsiao-Wei ^{[3
]}

Yang, Ming-Wei ^{[3
]}

Tsao, Jhy-Ming ^{[3
]}

机构：

[1] LungHwa Univ Sci & Technol, Dept Chem & Mat Engn, Taipei, Taiwan

[2] YuLin Univ, Dept Chem Engn, Yulin, Peoples R China

[3] Res Inst Taiwan Power Co, Taipei, Taiwan

来源：

INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL | 2015年 / 35卷

关键词：

Bubble column; Absorption; Taguchi method; Mass transfer coefficient; Algae; HYDROXIDE AQUEOUS-SOLUTION; MASS-TRANSFER COEFFICIENT; CHEMICAL-REACTIONS; CO2; CHEMISORPTION; ABSORPTION; SEPARATION; REACTORS; REMOVAL; SLURRY;

D O I：

10.1016/j.ijggc.2015.01.011

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A continuous bubble-column scrubber, capturing CO2 gas for scrubber design purpose by using a NaOH solution under a pH-stat operation, is used to search for optimum parameters for a scrubber design by means of the Taguchi method. The parameters are the pH of the solution, gas-flow rate, liquid-flow rate and temperature, with four levels for each. A total of 16 runs are carried out by using a Taguchi experimental design. From the measured CO2 concentrations at the outlet, the absorption rate and overall mass-transfer coefficient can be determined with the support of a steady-state material balance, as well as a two-film model. According to an SiN ratio analysis, a significance sequence influencing the parameters and optimum conditions can be determined. The results show that the gas-flow rate and pH value are significant parameters, while the temperature and liquid flow rate are minor. A total of four sets of optimum conditions will be used to make further verification. The data determined here were found to be optimum. According to the analysis presented here, a policy for a scrubber design can be established. The results could be used to obtain an algae growth solution for biological carbon fixation in a pilot-scale study. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：47 / 55

页数：9

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