Simulation of CO₂ Absorption and Desorption in Packed Columns

DOI

10.2991/aer.k.201221.004How to use a DOI?

Keywords

Packed column, simulation, gas absorption-desorption, Aspen HYSYS, carbon dioxide - water system

Abstract

This paper presents a research work on the simulation of a simultaneous gas absorption-desorption in the packed columns using computer software to obtain the maximum amount of absorbed carbon dioxide (CO2) into the water, the optimum L/G ratio for absorption, the optimum airflow rate for desorption, and make-up water for desorption. Simulations were carried out using the Aspen HYSYS program, with Sour SRK (Soave-Redlich-Kwong) ‘fluid package’. A Solteq gas absorption-desorption column unit (column diameter of 80 mm, glass raschig ring packing with an effective height of 1,500 mm) were used for the analysis, with an operating pressure of 1 bar, absorption temperature of 25°C, water flow rate (L) of 1.5 L/min, L/G 10-150 (kg/kg), and desorption temperature of 40°C. The model successfully predicts CO2 absorption with water, including a maximum solvent capacity of 1.176 g CO2/kg H2O at an optimum L/G ratio of 50. For the simultaneous absorption-desorption process, the airflow rate needed of 0.0016 LPM but required quite a big amount of make-up water, which is 24% of the freshwater flow rate. From those results, it was concluded that CO2 absorption and desorption in packed columns utilizing water as physical absorbent is feasible.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Bambang Soeswanto
AU  - Ninik Lintang Edi Wahyuni
AU  - Dhyna Analyes Trirahayu
PY  - 2020
DA  - 2020/12/22
TI  - Simulation of CO₂ Absorption and Desorption in Packed Columns
BT  - Proceedings of the International Seminar of Science and Applied Technology (ISSAT 2020)
PB  - Atlantis Press
SP  - 18
EP  - 22
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201221.004
DO  - 10.2991/aer.k.201221.004
ID  - Soeswanto2020
ER  -