Modeling of Adsorption in a Packed Bed Tower, the Case Study of Methane Removal and Parametric Calculation

In this work, the modeling of methane adsorption in a tower with fixed bed has been studied. In order to present a mathematical model, the mass balance was written in the tower. The obtained equations with the assumption of no changes in the concentration, temperature, and pressure in the radial direction as well as the axial dispersion of the flow pattern were solved by using numerical methods. Among various numerical methods, an implicit finite difference method was used to solve the equations. Base on the obtained model, the effect of temperature, inlet flow rate, bed length, and pressure on the adsorption tower was investigated. It was observed that with the temperature decreases, the adsorption rate increases. At a specified time, the amount of adsorbate in the gas phase at the outlet of the bed from 306 to 295 decreased by changing the temperature from T=298K to T=308K. also, the effect of pressure, gas velocity, adsorbent size and bed length in separate diagrams was studied and it was determined that with increasing pressure, decreasing gas velocity, increasing bed length and decreasing adsorbent size and adsorption rate increase

Keywords:

Adsorption , Modeling , Methane , Packed bed tower , fixed bed.