Title: Modelling and simulation of reaction kinetics of carbon dioxide absorption into aqueous ammonia in a wetted wall column

Authors: Ujjal K. Ghosh; Su Ching Yee

Addresses: Department of Chemical Engineering, School of Engineering and Science, Curtin University, CDT 250, 98009 Miri, Sarawak, Malaysia ' Department of Chemical Engineering, School of Engineering and Science, Curtin University, CDT 250, 98009 Miri, Sarawak, Malaysia

Abstract: Carbon dioxide accounts for about 80% of all greenhouse gases (GHG) and thus becomes the major source responsible for global warming which is considered as the greatest environmental challenge the world is facing. The post-combustion capture is the main way to lower the emission of existing power plants and future power plants where CO₂ is produced during the combustion. Solvent-based CO₂ capture technology a proven technology for CO₂ capture. Carbon dioxide absorption process using an ammonia solution provides many advantages including higher absorption capacity, no degradation and lower regeneration energy requirement. In this paper, a mathematical model for the reaction kinetics of carbon dioxide absorption into aqueous ammonia in a wetted wall column is developed. Simulation of the mathematical model is performed and the simulated results are compared with literature data.

Keywords: carbon dioxide absorption; CO2; aqueous ammonia; wetted wall column; carbon capture; mathematical modelling; simulation; carbon emissions; power plant emissions; reaction kinetics.

DOI: 10.1504/IJEP.2013.053182

International Journal of Environment and Pollution, 2013 Vol.51 No.1/2, pp.121 - 138

Received: 01 Mar 2012
Accepted: 18 Jun 2012
Published online: 28 Feb 2014 *

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