Problem 3: Design of a plate-and-frame filtration unit During a capstone design project, it is desired to size a plate a

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Problem 3 Design Of A Plate And Frame Filtration Unit During A Capstone Design Project It Is Desired To Size A Plate A 1 (69.46 KiB) Viewed 44 times

Problem 3: Design of a plate-and-frame filtration unit During a capstone design project, it is desired to size a plate and frame filter press to treat a slurry consisting of 450 kg magnesite in 20 m³ water. Filtration is performed at a constant pressure of 250 kPa. The specific cake resistance is 3.25×10¹0 m.kg¹ and the filter medium resistance is 1.15 x10 m³¹. The time of filtration is set to 2.5 hr and the cake density is 1300 kg solid/m³ of wet cake and the washing time is 0.5 hr. At the end of the cycle a dry cake is obtained between plate with 85% occupancy ratio. P T M = 0.001 Pa.p Recall useful formula : == (-) V + 1/10 (i) (ii) Calculate the overall filtration area (Atot) if all the water is drained! (100% dry cake) Find the number of plates (Np) if the filteration is two sided and the dimensions of the plates 0.3x0.3 m². (iii) Also estimate the thickness of the final dry cake in each frame. How many filtration cycles per day and the total amount of filtrate per day? (iv) Filter cake Slurry 'ash lic uid Wiw Filtrate (30 minutes) (25 Marks) F 2016 11- Y