Coconut oil is to be produced from dry copra in two stages. First, through expellers to...

Coconut oil is to be produced from dry copra in two stages. First, through expellers to squeeze out part of the coconut oil and then through a counter current multi- stage solvent extraction process. After expelling, the dry copra cake contains 25% residual oil. In the solvent extraction operation, 95% of the residual oil in the expeller cake is extracted as a solution containing 50% by weight oil. After the extraction process, the wt of insoluble cake was found to be 50kg. If solvent containing 1% oil is used and one kg of solution with every 2 kg of insoluble cake is removed with underflow. How many stages are required? If 1kg of solvent with every 2 kg of insoluble cake is removed with the underflow, how many stages are required?

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Amanda K answered 1 year ago

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