Lesson 5 : Simple Distillation

We perform simple distillation calculation as a problem in which ordinary differential equations and nonlinear equations are contained.

We add the following differential equation to boiling point calculation of Lesson 3.

* Seider W. D. et al, "Process Design Principles: Synthesis, Analysis and Evaluation", p.175 (2003)

/* Simple Distillation (benzene-toluene) */ P*y1 = P01*x1 // Raoult's law P*y2 = P02*x2 LOG10(P01) = A1 - B1/(t+C1) // Antoine's equation LOG10(P02) = A2 - B2/(t+C2) x1+x2 = 1 y1+y2 = 1 L' = L/(y1-x1) L#100 INTEGRAL x1[0.6,0.4] STEP 0.001 TREND x2,L,t STEP 0.02 //INPUT data P = 760 // Pressure A1=6.90565; A2=6.95464 // Antoine constants B1=1211.03; B2=1344.80 C1=220.790; C2=219.482

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Sample problem

The following sample problems will help you understand how EQUATRAN-G works.

Lesson 1 : Antoine Equation
Lesson 2 : Heat Balance of Heat Exchanger
Lesson 3 : Boiling Point Calculation
Lesson 4 : Reaction Calculation
Lesson 5 : Simple Distillation

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