Question

Fresh orange juice contains 12.0 wt% solid and the water, and concentrated orange juice contain 42.0 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 bypassing 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 desire final concentration.

a) Draw and label a flowchart of this process, neglecting the vaporization of everything in the juice but water.

b) Put together a table or write equations you would use to determine all unknown stream variables, but don’t do any calculations.

Answer 1