Capturing CO2 in a Bubble-Column Scrubber Using Blended Amine Solvent

Pao Chi Chen, Huan Sheng Tseng, Zi Qi Lai, Zi Xiang Liao

2018

Abstract

Carbon dioxide emissions are the major climatic change issue in the world. In order to reduce the CO2 emissions, several technologies have been explored, in which absorption is found to be a powerful method. The key factors for an effective absorption are the structure of the scrubbers and solvents adopted. Therefore, this study aimed at absorbing carbon dioxide through a bubble column using AMP+MEA blended amine solution as an absorbent. The reason for using MEA+AMP as the absorbent was that its absorption capacity can be improved and the price was cheaper for both. In addition, the scrubbing factor for a bubble-column scrubber was higher. In the experiment, CO2 absorption was performed by simulating the temperature of the flue gas and the concentration of CO2 in the coal-fired power plant. The liquid flow rate (A), gas flow rate (B), temperature in the column (C) and solution concentration (D) were chosen as the operating factors. There were 4 factors in total, and 3 levels of each were taken for Taguchi design L9(34). There were a total of 9 groups of experiments. In order to explore the effect of operating variables on the absorption efficiency (E), absorption rate (RA) and overall mass transfer coefficient (KGa), the parameter significance and target operating condition (E=90%; RA=1x10-3 mol/s-L; KGa=0.4 s-1) could be obtained by Taguchi design and Taguchi analysis, so as to serve as a reference for future scale-up design. The results showed that E was in 65.79-98.7%; RA was in 3.54 x10-4-13.9 x10-4mol/s-L; and KGa was in 0.1743-0.3950 s-1. After Taguchi analysis, A and B were found to be significant parameters, and the target condition was confirmed to be A1B1C2D3. In addition, the best condition was also discussed in here.

Paper Citation

in Harvard Style

Chen P., Tseng H., Lai Z. and Liao Z. (2018). Capturing CO2 in a Bubble-Column Scrubber Using Blended Amine Solvent.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 76-81. DOI: 10.5220/0007426000760081

in Bibtex Style

@conference{iweg18,
author={Pao Chi Chen and Huan Sheng Tseng and Zi Qi Lai and Zi Xiang Liao},
title={Capturing CO2 in a Bubble-Column Scrubber Using Blended Amine Solvent},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={76-81},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007426000760081},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Capturing CO2 in a Bubble-Column Scrubber Using Blended Amine Solvent
SN - 978-989-758-342-1
AU - Chen P.
AU - Tseng H.
AU - Lai Z.
AU - Liao Z.
PY - 2018
SP - 76
EP - 81
DO - 10.5220/0007426000760081