12.10-2. A continuous countercurrent multistage system is to be used to leach oil from meal by benzene solvent. The proc

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12 10 2 A Continuous Countercurrent Multistage System Is To Be Used To Leach Oil From Meal By Benzene Solvent The Proc 1 (169.83 KiB) Viewed 61 times

12.10-2. A continuous countercurrent multistage system is to be used to leach oil from meal by benzene solvent. The process is to treat 2000 kg/h of inert solid meal (B) containing 800 kg oil (A) and also 50 kg benzene (C). The inlet flow per hour of fresh solvent mixture contains 1310 kg benzene and 20 kg oil, but the inlet fresh-solvent-mixture flow rate per hour is decreased by 10%, to 1179 kg of benzene and 18 kg of oil. The leached solids are to contain 120 kg oil. Data are tabulated below as N kg inert solid B/kg solution and yA kg oil A/kg solution Calculate the number of stages needed. N N YA 2.00 0.0 1.82 0.4 1.98 0.1 1.75 0.5 1.94 0.2 1.68 0.6 1.89 0.3 1.61 0.7