A reactor processes air flowing at 100 actual cubic meters per min (acmra) at 50 °C and 1 atm. The airstream is contaminated with a gaseous pollutant (800 ppm). The contaminant is destroyed in a 30.0 m3 vessel via a first-order reaction. The rate constant for flie reaction is k - 15.0 min-1, The final concentration in the exit stream is 10 ppm Does this reactor more closely approximate a CSTR or a PPR?

CHEMICAL ENGINEERING CHEMICAL REACTION ENGINEERING QUESTION

4. A convective kerosene heater is tested in a well- mixed 35 m3 chamber having an air exchange rate of 0.25 ach. After 2 hour of operation, the NO concentration reached 5.0 ppm. Treating NO as a convective pollutant: a. Estimate the NO source strength of the heater (mg/hr). b. Estimate the NO concentration that would be expected in the lab 2 hour after turning off the heater.

Acetic acid anhydride needs to be hydrolyzed in a continuouslyoperating cascade reactor consisting of four identical stirred tankreactors (CSTRs). The hydrolysis reaction is assumed to followfirst-order kinetics in diluted aqueous solutions.a) How large should the CSTRs be to achieve a conversion of95% at the outlet of the cascade when all the reactors operate at15°C?[10 marks]b) How large should the CSTRs be to achieve the sameconversion when all the reactors operate at 40°C?[3 marks]c) How large should be the CSTRs to achieve the sameconversion if the first reactor operates at 10°C, the second oneat 15°C, the third at 25°C, and the fourth at 40°C?[12 marks]Input volumetric flow rate of 90 L min-1is used for all cases.The rate constant has the following values at the giventemperatures: T (degrees) : 10 /15/25/40 k(min^-1) : 0.0567/0.0806/0.1580/0.3800