P4.41 Hydrogen reacts with iron oxide (Fe₂O3) to produce metallic iron

(Fe), with water vapor as a byproduct. 100% conversion of Fe₂O3 is

achieved, and the metallic iron is easily separated from the hydrogen-water

vapor mixture. The water is condensed, and the hydrogen is recycled. The

hydrogen source is contaminated with 1 mol % CO. The recycle:fresh feed

ratio is 4:1, and the maximum allowable CO in the gas fed to the reactor is

2.5 mol %. Draw a flow diagram, and complete a DOF analysis. Then

calculate the single-pass and overall conversion of H₂ as well as all process

flows, for a production rate of 1 ton/day metallic iron. (Hint: Consider

changing basis to the gas feed.)