Chemical Engineering

The elementary irreversible gas phase reaction AB+C is carried out in a packed bed reactor reactor. Pure A enters the reactor at a volumetric flow rate of 20 dm/s at a pressure of 10 atm and a temperature of 450 K. The rate constant at 450 K is 1.85 dm\/kg. cat. s. a) Taking pressure drop into account, plot the pressure and conversion versus the catalyst weight. The reactor is packed with catalyst which has a =0.01/kg cat. b) What is the required catalyst to achieve 65% conversion? c) If the bulk density, Pb = 0.7 g/dm”, what is the required reactor volume to achieve 65% conversion?

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Question 2 (18 marks) The elementary irreversible gas-phase reaction A B+C is carried out adiabatically in a fluidised bed CSTR reactor packed with a catalyst. Pure A enters the reactor at a volumetric flow rate of 20 dm’/s at a pressure of 10 atm and 450K. It can be assumed that the pressure drop is negligibie. what catalyst weight is necessary to achieve 80% conversion? (a) Additional data Cp,-40 J/mol.K, Cp3-25 Jim ol.K and CpC-15 J/mol.K H. (273)–70 kJ/mol; Ha (273)–50 kJ/mol and He (273)–40 kJ/mol with E 31.4kJ/mol k0.133exp R 450 T kg.cats

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In the lab, we performed nucleation experiments to predict the nucleation rate of an active pharmaceutical ingredient at two different initial supersaturations. Assume that we started the experiments with 17 vials. Table below shows the time versus the number of vials nucleated at the studied initial supersaturations.

In the lab, we performed nucleation experiments to predict the nucleation rate of an active pharmaceutical ingredient at two different initial supersaturations. Assume that we started the experiments with 17 vials. Table below shows the time versus the number of vials nucleated at the studied initial supersaturations. S = 2 S = 4 No of …

In the lab, we performed nucleation experiments to predict the nucleation rate of an active pharmaceutical ingredient at two different initial supersaturations. Assume that we started the experiments with 17 vials. Table below shows the time versus the number of vials nucleated at the studied initial supersaturations. Read More »

The dimensionless Henry’s law constant for hexane is 0.14. A sealed glass vial is prepared that has an air volume of 5 ml overlying aqueous volume of 55 ml. Hexane is added to the aqueous phase so that initially it has an aqueous phase concentration of 0.2ppm. After the system equilibrates, what will be the concentration of hexane in the aqueous phase?

The dimensionless Henry’s law constant for hexane is 0.14. A sealed glass vial is prepared that has an air volume of 5 ml overlying aqueous volume of 55 ml. Hexane is added to the aqueous phase so that initially it has an aqueous phase concentration of 0.2ppm. After the system equilibrates, what will be the …

The dimensionless Henry’s law constant for hexane is 0.14. A sealed glass vial is prepared that has an air volume of 5 ml overlying aqueous volume of 55 ml. Hexane is added to the aqueous phase so that initially it has an aqueous phase concentration of 0.2ppm. After the system equilibrates, what will be the concentration of hexane in the aqueous phase? Read More »