Nonequilibrium dynamic modeling of simultaneous reactive absorption of gases

作者：Ghaemi Ahad^*; Torab Mostaedi Meisam; Maragheh Mohammad Ghannadi

来源：Journal of the Taiwan Institute of Chemical Engineers, 2011, 42(1): 173-179.

DOI：10.1016/j.jtice.2010.03.022

• Nonequilibrium model
• Dynamic modeling
• Mass transfer
• Simultaneous absorption

In this work, a nonequilibrium dynamic model has been developed based on unsteady-state diffusion-reaction film modeling for simultaneous reactive absorption of gases. The model can predict ionic and molecular forms of all species exist in liquid phase. As a case study, simultaneous reactive absorption of ammonia and carbon dioxide into partially carbonated ammonia solutions was modeled. Dynamic modeling of the process leads to a system of partial differential equations, which has to be solved numerically using method of lines. For the process, conversion film parameter and carbonation ratio are presented as a pair of components absorption rate criteria. The steady-state experimental data were conducted using a pilot scale absorption column for the evaluation of the model. A comparison between the experimental data and the simulation results proves the good predictivity of the presented nonequilibrium dynamic model.

• 出版日期2011-1