To produce methyl alcohol, the chemical reaction represented by the equation CO + 2H = CHOH is used.

This is the main reaction because a side reaction occurs represented by: CO + 3H=CH + HO.

The CO conversion per pass is 12.5%. Of this amount, 87.5% corresponds to the main reaction and the rest to the collateral reaction. The reactor outlet stream passes through a condenser where a liquid mixture of methanol and water is obtained, while the remaining gases are passed to a separator where all the methane is removed and the other gases are recirculated. Calculate:

(a) Degrees of freedom for: the total process, each unit and the mixing point.

(b) The mass composition of the methanol-water mixture.

(c) The recycle ratio (moles of recycle/mole of fresh feed).

CO.H2 32% CO 68% H2 Reactor Condenser Separator CHE 5 CH OH H20