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

摘要

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 CO_2 is produced during the combustion. Solvent-based CO_2 capture technology a proven technology for CO_2 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.