Impact analysis of kinetics and dynamics of SO2 and NOx adsorption from flue gases on the geometry of the column with a fixed carbon bed
The purpose of this research paper is to analyse the impact of kinetics and dynamics of sulphur dioxide (IV) and nitric oxide (II) adsorption from the flue gases on the geometry of a column with a fixed carbon bed. Using the following kinetics equation: pseudo-first and pseudo-second-order, Webber-Morris and Elovich and dynamics Langmuir equation, essential operation parameters for activated carbon made from coconut shell modified by copper have been found. Comparison of two schemes (simultaneous adsorption of SO2 and NO after CO2 adsorption and simultaneous adsorption of SO2, NO and CO2) has been done to determine the adsorption’s time, efficiency and a breakthrough curve. Process scaling has been used to evaluate the chances of adsorption flue gas treatment implementation in industrial production. Bed height has been modelled considering the flow of fuel gases for ½ technical scale and flow of fuel gases for large combustion plants. Match factors values have pointed that the research is more accurate for NOx than SO2 adsorption regardless of the operation scenario. To reduce the height of one column, a battery of columns should be applied, e.g. for NO adsorption in one segment and SO2 adsorption in another segment.