A Simple Mathematical Model and Computer Simulation of Non-isothermal Gas Absorption in Packed Tower

Oxygen-enriched combustion technology can effectively achieve residual capture, but the existence of acid gases such as NOx and SOx is not conducive to the transportation and storage of CO2. The compression of CO2 discharged from the packed tower is a necessary process before transportation. Therefore, the study of combined desulfurization and denitrification of flue gas under high pressure is of great significance to the application of carbon capture and storage technology. Based on the mass transfer coefficients obtained from experiments, a coupled model of mass transfer and kinetics of the bubbling reactor is established for the combination of reaction mechanism and kinetics of non-isothermal gases, and this unsteady state problem is solved by the Runge-Kutta mathematical method. The simulation study of the product changes in the process of NO and SO2 absorption alone and combined absorption under different pressures. The results show that: the interaction of NOx and SOx in the liquid phase promotes the absorption of SO2, NO2 and the mass production of and in the liquid phase, and it is also generates a large amount of greenhouse gas N2O; the increase in pressure is beneficial to , , The production of HADS and HAMS also led to an increase in the production of N2O.