Question

QUESTION 2 [23 Marks] You are required to design Stairmand HR cyclones to be operated in parallel to treat 4 m/s of gas density 0.6 kg/m and viscosity 2 x 10 Pa's carrying a dust of density 2200 kg/m? A Xso cut size of at most 7 um is to be achieved at a pressure drop of 1100 Pa. (For a Stairmand HR cyclone: Eu = 46 and Stkso = 6 x 103) a) Determine the diameter and number of cyclones required. (18) b) Give the actual cut size achieved by your design. c) A change in process conditions requirements necessitates a 50% drop in gas flow rate. What effect will this have on the cut size achieved by your design?

Answer 1