# Distillation process - balanced and constitutive equations

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The attached drawing shows a steady state distillation process. Assuming no heat losses to the atmosphere:

a) Write four balanced equations for this system.

b) Identify where any constitutive equations may be required for the modelling processes.

https://brainmass.com/engineering/chemical-engineering/distillation-process-balanced-and-constitutive-equations-565134

#### Solution Preview

1.

Feed:

Feed total mass = mass of X + mass of Y.

=> mF = mFX + mFY

mass of X, mFX = 60% of mF = 0.6 mF

mass of Y, mFY = 40% of mF = 0.4 mF

Top product:

Top product total mass = mass of X + mass of Y

=> mT = mTX + mTY

mass of X, mTX = 99% of mT = 0.99 mT

mass of Y, mTY = 1% of mT ...

#### Solution Summary

Solution to a distillation process, estimating balanced equations by applying heat and mass conservation concept.

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