Sample report on the hydrodynamic calculations for WTR floating valve columns

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This post was last edited by wiseboy on 2011-4-9 09:46. Note: The fluid dynamics calculations provided by process simulation software are often far from sufficient; they rely on simple \"calculation-based\" algorithms. You have to enter almost all the parameters, and the software then performs the calculations – how can beginners do this? The process simulation software also doesn’t have a performance chart! WTR Floating Valve Column Hydrodynamics Calculation Report ━━━━━━━━━━━━━ Project Information: Project Name, Project Phase, Equipment Name, Equipment Tag Number, Remarks Process Data: Gas phase density – 4.0000 kg/m3; Gas phase volume flow rate – 30000.0000 m3/h; Gas phase mass flow rate – 120.0000 t/h. Foam density – 0.8000; Liquid phase density – 670.0000 kg/m3; Liquid phase surface tension – 15.0000 Dyne/cm. Liquid phase volume flow rate – 126.8657 m3/h; Liquid phase mass flow rate – 85.0000 t/h. Tray structure data (1): Number of streams – 1; Tray spacing – 900.0000 mm; Stabilization zone – 70.0000 mm; Edge zone – 50.0000 mm. Bubble point ratio – 51.4015%; Bubble point gas velocity – 1.5083 m/s; Empty column gas velocity – 0.7753 m/s; Flow factor – 0.0547. Downcomer pressure drop – 40.9699 mm; Height of clear liquid in downcomer – 263.6057 mm; Column diameter – 3800 mm; Downcomer residence time – 15 S. Operating upper limit – 139%; Operating lower limit – 32%. Weir diameter ratio – 60.0000%; Weir height – 50.0000 mm; Weir tooth depth – 5.0000 mm; Gap between downcomer and tray – 30.0000 mm; Weir length – 2280.0000 mm; Downcomer width – 380.0000 mm; Downcomer area – 5.2044%. Area of open section – 9.4974 m2; Head above weir – 26.5105 mm; Tray pressure drop – 47.3060 mm; Height of clear liquid on tray – 76.5105 mm. Lower limit of liquid phase flow rate – 0.0009 m3/s; Upper limit of liquid phase flow rate – 0.1062 m3/s. Tray structure data (2): Tray type – Floating valve; Hole arrangement pattern – Equilateral triangle; Type of floating valve – Heavy valve. Number of tray sections – 8; Hole diameter – 39.0000 mm; Hole spacing to diameter ratio – 2.5641; Tray thickness – 2.0000 mm; Hole spacing – 100.0000 mm; Number of holes – 894.0000; Openness ratio – 11.2448%; Hole velocity – 7.8031 m/s; Pressure drop across dry tray – 98.8193 mm; Total tray pressure drop – 146.1253 mm