Chemical Engineering Hand Written_Notes_Part_1

Chemical Engineering Hand Written_Notes_Part_1 - 4 1....

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4 1. MATHEMATICAL MODELING AND SIMULATION Figure 2 Example 1 . Recovery of acetone from air -acetone mixture is achieved us- ing an absorber and a f ash separator (Figure 2). A model for this system is developed under following conditions All acetone is absorbed in water Air entering the absorber contains no water vapor Air leaving the absorber contains 3 mass % water vapor The f ash separator acts as a single equilibrium stage such that acetone mass fraction in vapor and liquid leaving the f ash separator is related by relation (2.1) y =20 . 5 x where y mass fraction of the acetone in the vapor stream and x mass fraction of the acetone in the liquid stream. Operating conditions of the process are as follows Air in f ow: 600 lb /hr with 8 mass % acetone Water f ow rate: 500 lb/hr It is required that the waste water should have acetone content of 3 mass % and we are required to determine concentration of the acetone in the vapor stream and f ow rates of the product streams. Mass Balance: Air : 0 . 92 Ai
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This note was uploaded on 11/26/2011 for the course EGN 3840 taught by Professor Mr.shaw during the Fall '11 term at FSU.

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Chemical Engineering Hand Written_Notes_Part_1 - 4 1....

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