Temperature influence over the absorption process of CO2 in octane

Abstract

The paper presents a solution for modeling and simulation of the CO2 absorption process in octane. In this approach, the main input signal is considered the temperature at which the absorption phenomenon takes place. Also, the absorption process is treated as a non-linear process, the proposed mathematical model being an original one. In order to simulate the evolution in time of the absorbed CO2 concentration in octane, the structure parameters of the process are identified using experimental identification procedures. The usage of the experimental identification is possible due to the fact that some sets of experimental data are obtained from the real plant. The obtained mathematical model is a general one and it can be used for the simulation of the absorption process for any value of the temperature, respectively of the initial pressure from the absorber. In this context, some interesting simulation results are presented at the end of the paper. The main advantage resulted through the absorption process modeling is the possibility to determine, before starting the process, the necessary working temperature that has to be maintained in order to obtain the imposed value of the absorbed CO2 in octane, for any value of the initial working pressure.