The pressure drop information from three lab filtrations conducted at constant pressure are listed as follows. Determine
Posted: Mon May 09, 2022 9:07 am
The pressure drop information from three lab filtrations conducted at constant pressure are listed as follows. Determine the cake specific resistance, a, as a function of pressure drop. The data will be used to size a rotary drum with the diameter of 0.5 m, to filter 2700 m3/hr slurry. Calculate the length of the drum. Rotary Drum: Submerged fraction = 30%. Rotation speed =1 rpm. Expected pressure drop = 150 kPa. Lab Test Conditions: Filter area: 500 cm². Mass of solid per unit of filtrate = 25 kg/m3. Cake moisture content = 50%. Viscosity and density of water are 1e-3 kg/m.s and 1000 kg/m3. Filtrate volume Test 1 Test 3 Test 2 AP = 120 kPa AP = 50 kPa AP = 200 kPa VAL t, s t, s t, s 0.5 17 7 5 1 41 20 15 1.5 72 35 25 N 2 110 50 38 2.5 150 80 52 3 200 105 70 3.5 130 90 4 165 110 4.5 135 5 5 160