$($Part A$)$ Design a process to produce a nitric acid$-$water solution $(HN{O}_3+H_{2}O)$ from ammonia $(N{H}_3)$ and air $(N_2+O_2),$ using the following reaction at $750C$ :

$N{H}_3+2O_{2}HN{O}_3+H_{2}O.$

Assume that using air is preferable to using $O_2$ obtained by cryogenically separating $N_2$ and $O_2.$ Cryogenic separation is expensive. $N_2$ in the reactor yields no by$-$products, although it increases the size of the reactor. The reaction conversion is less than $100\%$ : the effluent will contain one or more reactant, as follows.

Design Goals $($in decreasing importance$)$

Minimize the number of process units.

Minimize the sizes of the process units.

Design Rules contain both $N{H}_3$ and $O_2($and $N_2,HN{O}_3,$ and $H_{2}O)$

If the reactant mixture has excess $N{H}_3,$ the effluent will contain no $O_2.$

If the reactant mixture has excess $O_2,$ the effluent will contain no $N{H}_3.$

Indicate on your flowsheet which reactant $($if any$)$ are in excess. Hint: Try multiple designs with different gases in excess $($or none in excess$)$ then evaluate if one design if preferable.