Calculate the general point gas velocity
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For a two-stage decomposition tower in a urea system, how should the critical gas velocity be calculated using metal Pall ring packing? The known values are: gas phase density of 16.67 Kg/m3, mass flow rate of 65742.75 Kg/h; liquid phase density of 1200 Kg/m3, mass flow rate of 53970.4 Kg/h, and viscosity of 0.65 mPa·s. Please help, experts! Thank you! ! ! ! !
There are ready-made formulas; with all the necessary basic data available, one just needs to plug them in and do the calculations.
What formula? Is it an equation relating the general point velocity? ? ? ? ?
You can just simulate it using Aspen Plus; it’s very easy
There is information available on this topic that can be used to carry out the calculations directly
Does anyone have data for such calculations? I really need it urgently! ? ? ?
It’s in the textbook on chemical engineering principles. A general process design manual will work as well
Using the Bain-Hogan formula, the value of A commonly used for metal Bower rings is 0.0942
lg = A – 1.75(L/G)0.25(ρG/ρL)1/8; taking A as 1.0 and a/ξ3 as 131, a rough calculation gives u = 0.884
Thank you all for your help! ! ! ! :kiss: :kiss: