Study pinpoints hydrate causes at Iranian cracking centers

F. Esmaeilzadeh, O. Dehghani, H. RajaeeChemical Engineering DepartmentSchool of Chemical and Petroleum EngineeringShiraz UniversityIranSimulation with Aspen Technology Inc.'s HYSYS indicates the formation of hydrate crystals in a de-ethanizer tower is likely due to the presence of water. This phenomenon happens at the top of tower where the temperature is 5° C. and pressure is 15 bara.Separation of C2 gasses and those lighter than liquid C3+ occurs in a valve-tray tower at Iran's olefin cracking center, the Jam petrochemical complex at Assaluye, Bushehr. As Fig. 1 shows, liquid hydrocarbons from the cracking compressor center and C3+ from liquid storage enter this tower as the main fe...

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