Select an appropriate reactor type considering the deactivation rate of the catalyst for the production of $200$ tons of xylene per year. The catalyst feed rate is $5$ kg$/$hour$,$ and $50$ kg of catalyst will be used. What is the optimum feed pressure and conversion rate?

k$=20$

kd$=0\mathrm{.}2$

$-$ra$=$ k$\backslash$times Pa

$-$da$/$d$==========$