answer all parts to this problem Problem $2$: VOC incinerators $(30$ points$)$

You are asked to design an afterburner to destroy $99\mathrm{.}9\%$ of $2,3,7,8-$ tetrachlorodibenzodioxin

$($TCDD$),$ the structure of which is shown in the following image:

The burner will use propane as fuel gas and treat $8,000f\frac{t^3}{m}in$ of polluted air that enters the

burner at $250F.$

a$)$ Estimate the necessary temperature of the afterburner using the Lee method for a residence

time of $2s.$ The autoignition temperature of TCDD is $997F.(10$ pts$)$

b$)$ Calculate the rate of propane necessary if the air$-$to$-$fuel ratio is $2$ and the fractional heat loss

$10\%.$ The ambient air temperature is $60F.(10$ pts$)$

c$)$ Calculate the length and diameter of the burner if the gas velocity is $10f\frac{t}{s}.(10$ pts$)$