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Flash calculations problem

Flash calculations problem . 100mole of liquid mixture containing 50% n- heptane and 50% n-octane at 30 o C is continuously flash vaporized at 1atm. Find the quantity and composition of of liquid and vapor streams. Flashing temperature is 113 o C. Antoine constants:. Steps:

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Flash calculations problem

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  1. Flash calculations problem 100mole of liquid mixture containing 50% n-heptane and 50% n-octane at 30oC is continuously flash vaporized at 1atm. Find the quantity and composition of of liquid and vapor streams. Flashing temperature is 113oC. Antoine constants:

  2. Steps: 1- Assume (L/V)1 =1. 2- Calculate Sx1=0.992 and Sy1=1.008 . 3- Sx ≠1 and Sy≠1 assume another L/V 4- Assume (L/V)2 =0.5 5- Calculate Sx2= 1.005 and Sy2= 0.9975 . 6- Interpolate for any of them say Sx.

  3. L/V=0.69 V=59.5mole L=40.5mole The vapor and liquid compositions:

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