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Derive the performance equation of mixed flow reactor.
Write short note on :
Fluidized bed reactor.
Thiele modulus
Define molecularity and order of reactions.
Variation first order rate contact of a reaction with temperature was investigated in the laboratory and following data was obtained. Determine the complete rate equation.
Give a diagrammatic representation of three types of reactors.
The reaction 2A+B+ A,B is modeled as
Derive the rate of equation for this mechanism and show that it is of the form:
Explain differential method of analysis.
The gas reaction 2A R+ 2S is second order with respect to A. With pure A in batch reactor at atm under constant volume conditions, the pressure was found to increase to 1.4 atm in 3 minutes. If the reaction were to be carried out in a constant pressure batch reactor, what is time required for the same conversion and what is fractional increase?
Dispersion model.
Liquid homogeneous reaction,
takes place in a mixed flow reactor with 75% conversion of A. Determine the size of mixed flow and plug flow reactor in order to achieve 85% conversion. Assume volume of original reactor is 5 liters.
Three plug flow reactors are connected as shown in the Fig. Q5(a).
Determine the flow rates V, and V2 for optimum performance of the combination.
Prove that n equal sized mixed flow reactors connected in series will act as if it is an ideal plug flow reactor as n tends to infinity.
Elementary reaction
is to be carried out in a mixed flow reactor. Prove that space-time required for maximum concentration of R is given by
An exothermic reaction is carried out in an adiabatic plug flow reactor. Show temperature and reactant concentration profile along the length.
Derive an expression for heat of reaction at temperature T given heat of reaction at 298 K for the reaction aA + bB → cC. Assume Cpi =
Write a short note on optimum temperature progression.
Elaborate the design procedure for plug flow reactor (adiabatic) in which an endothermio reaction is taking place.
What are promoters and inhibitors? Explain.
Discuss tanks in series model.
Discuss the following:
i) Progressive conversion model
ii) Shrinking core model.
Obtain an expression for this of conversion when chemical reaction is controlling for reaction between A(q) and B(i) producing non flaking ash.
Explain in detail kinetic regimes of non catalytic fluid-fluid reaction.
Gaseous A absorbs and reacts with B in liquid phase according to in a packed bed under conditions where
= 0.1 mol/hr m ; = 100mm ; a= 100m /m : =0.01 ; = =10° m'hr. At a paid in the reactor where PA = 100 Pa and Co = 100 mol/m'. Calculate the reaction rate and describe the characteristics of kinetics for the values of K = 106 m3/mt hr. HA-104 Pa m3/mol.
Discuss the significance of Hatta no. and film conversion parameter.
Explain briefly the methods used for the measurement of the surface area of catalyst.
Dispersed non coalescing droplets (CAO = 2 mol / litre) react
( = 0.5 lit/mol min) as they pass through a contractor. Find the average concentration of A remaining in the droplets leaving the reactors, if their RTD is given by the curve as shown below?
Explain the following:
i) Parallel deactivation
ii) Side by side deactivation.
One of the most commonly used decay law for independent deactivation is second order deactivation which is given by
for the first order isomerization A B which is carried out isothermally in a batch reactor on a catalyst that is decaying as a result of aging whose decay law is given as above. Derive and equation for finding conversion as a function of time?
Explain the contacting pattern's for two phase systems.
Gaseous A diffuses through a gas film and reacts on the surface of a solid according to the reversible first order rate
equilibrium concept of A is equilibrium with solid surface.
Develop an expression for the rate of reaction of A accounting for both the mass transfer and reaction steps.
Explain in detail the experimental methods of finding kinetics of solid catalysed reactions.
E-curve and F curve.
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R+ 2S is second order with respect to A. With pure A in batch reactor at atm under constant volume conditions, the pressure was found to increase to
1.4 atm in 3 minutes. If the reaction were to be carried out in a constant pressure batch
reactor, what is time required for the same conversion and what is fractional increase?
in a packed bed under conditions where
= 0.1 mol/hr m ; 
= 100mm ; a= 100m /m : 
=0.01 ; 
= 
=10° m'hr. At a paid in the reactor where P
= 0.5 lit/mol min) as they pass through a contractor. Find the
average concentration of A remaining in the droplets leaving the reactors, if their RTD is
given by the curve as shown below? 
for the first order isomerization A 
B which is carried out isothermally in a
batch reactor on a catalyst that is decaying as a result of aging whose decay law is given as
above. Derive and equation for finding conversion as a function of time? 
equilibrium concept of A is equilibrium with solid surface.