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    Solvent Extraction: Calculation of the Number of Stages Required

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    Problem:
    60 tons per day of oil-sand (25 mass % oil and 75 mass % sand) is to be extracted with 40 tons per day of naphtha in a counter-current extraction battery. The final extract from the battery is to contain 40 mass % oil and 60 mass % naphtha and the underflow from each unit is expected to consist of 35 mass % solution and 65 mass % sand. If the overall efficiency of the battery is 50%, how many stages will be required?

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    © BrainMass Inc. brainmass.com October 9, 2019, 3:31 pm ad1c9bdddf
    https://brainmass.com/engineering/petroluem-refinery-engineering/calculation-number-stages-required-5988

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    Solution Summary

    In this problem, the number of stages required have been determined for solvent extraction. The solution is detailed and well presented.

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