Fresh orange juice contains 10.0 wt% solids and the balance water, and concentrated orange juice contains 37.0 wt% solids. Initially, a single evaporation process was used for the concentration, but volatile constituents of the juice escaped with the water, leaving the concentrate with a flat taste. The current process overcomes this problem by passing the evaporator with a fraction of the fresh juice. The juice that enters the evaporator is concentrated to 58 wt% solids, and the evaporator product stream is mixed with the bypassed fresh juice to achieve the desired final concentration. Calculate the amount of product (37.0% concentrate) produced per 100 kg fresh juice fed to the process and the fraction of the feed that bypasses the evaporator.
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Fresh orange juice contains 10.0 wt% solids and the balance water, and concentrated orange juice contains 37.0 wt% solids. Initially, a single evaporation process was used for the concentration, but volatile constituents of the juice escaped with the water, leaving the concentrate with a flat taste. The current process overcomes this problem by passing the evaporator with a fraction of the fresh juice. The juice that enters the evaporator is concentrated to 58 wt% solids, and the evaporator product stream is mixed with the bypassed fresh juice to achieve the desired final concentration. Calculate the amount of product (37.0% concentrate) produced per 100 kg fresh juice fed to the process and the fraction of the feed that bypasses the evaporator.
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