**3. Conclusion**

The modeling of the absorption process was carried out using the Unisim program. The study of the various parameters allowed to identify their influence on the whole process in particular on the gas dew point and also on the glycol concentration after regeneration.

The simulation results showed that the parameters that have the greatest influence on the efficiency of the process are the gas contact temperature, the rate of circulation of triethylene glycol, as well as the stripping gas if regeneration of glycol with a high concentration is required.

A decrease of the gas contact temperature to 25°C led to a decrease in the amount of water in the dried gas.

A high TEG circulation rate results in dry gas with less water but can overload the reboiler and reduce good glycol recovery.

To increase the degree of TEG regeneration, a stripping gas and an azeotropic agent were used at atmospheric pressure.

With the stripping gas, the TEG was regenerated up to 99.71% by mass at a reboiler temperature of 205°C, while with the azeotropic agent the regeneration is 99.914% by mass for a temperature of 180°C and for a temperature of 200°C it is 99.981% by mass.

The particular conclusion of this study is that increasing the temperature of the reboiler does not allow a great increase in the purity of the regenerated triethylene glycol; therefore, to reduce the heat consumption, the temperature of the reboiler can be reduced.
