محسن منصوری

Dehydration of Natural gas by (TEG) is the most powerful method for reducing water dew point temperature(WDP) in dry gas to avoid many industrial problems and mainly avoid corrosion, hydrate formation, and pipeline blocking.In this study, Aspen Hysys v.11 was used to simulateTEG natural gas dehydration in the West-Qurna field by CPA after choosing it as the appropriate thermodynamic model to achieve the WDP (-0.165°C ) At 10.38 bar, where WDP required for dehydration unit in W.Q field is 0°C at the same pressure.In the first part of this study, We a sensitivity analysis has been extensively conducted for the leading operating variables that affect the efficiency of the dehydration process to address economic and technical problems that occur in the dehydration process, such as TEG losses and energy consumed, the results of the parametric study showed that flow rate for TEG, Reboiler temperature, and mass flow rate of stripping gas have trade-off effect on the principal dependent variables,the optimal value for these variables has been obtained graphically for each variable individually, within an acceptable range of WDP, wherethe optimal TEG flow rate is 5000 kg/hr.,This provides recovery of heat flow from Reboiler (25%)and saving of TEG flow rate (37%) at WDP (1°C), while recovery of TEG losses is (14%) and saving (25%) from the mass flow rate of stripping gas when the optimal value of stripping gas is 300kg/hr.