J Behin - ۱Department of Chemical Engineering, Faculty of Engineering, Razi University, Kermanshah, IRAN
A Karimi - ۲Acetic acid unit, Fanavaran petrochemical complex, Mahshahr, IRAN

Acid corrosion causes many problems in industrial operations of acetic acid production. The possibility of applying methanol absorbent instead of acetic acid absorbent in light end recovery system of acetic acid unit of Fanavaran petrochemica complex was investigated. The simulation was carried out using Aspen plus software. Simulation results of applying methanol showed an absorption efficiency of 99.6% in high pressure absorption tower and 99.3% in low pressure absorption tower. The corresponding values for acetic acid absorbent were 99.7% in high pressure absorption tower and 99.6% in low pressure absorption tower. Results obtained of applying methanol were comparable with acetic acid, moreover the decreasing the equipments corrosion and removal of stripper tower are the advantages of methanol absorbent.

Acetic acid; Methanol; Simulation; Absorption