1. Department of Chemical Engineering, School of Chemical and Petroleum Engineering; Persian Gulf University; Bushehr, 75169 Iran
2. Department of Chemical Engineering; Shiraz University of Technology; Shiraz 71555-313 Iran
3. Department of Chemical Engineering, School of Chemical and Petroleum Engineering; Shiraz University; Shiraz, 71345 Iran
4. Development & Engineering Management Department; South Pars Gas Complex Company; Assaluyeh Iran