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00000CH305121904

Derive the performance equation for a batch reactor for constant density and variable
density systems for a first order irreversible reaction.
A homogeneous gas phase decomposition reaction 4A — B + 7S takes place in an
isothermal ideal plug flow reactor. The reaction rate is, - = 1९५ with k; = 0.17 51;
feed concentration of A (ಲ್ಸ) = 1 mol/m? ; Feed Flow rate (Fao) = 0.17 mol/s.
Determine the size of the reactor to achieve 50% conversion
Define space time and space velocity. Deduce the integrated rate expression for a
zero order reaction in a variable volume batch reactor.
Show that the performance of N equal sized CSTR’s in series is equivalent to a Plug
Flow Reactor (PFR).
PART C

Answer any two full questions, each carries 20 marks.
Derive Michaelis-Menten kinetic equation for the enzyme catalyzed reaction AR.
With a neat sketch, explain the principle of membrane reactor.
Explain the mechanism of non-competitive inhibition in enzyme reactions and obtain
the kinetic expression
A CSTR and a PFR of equal volume V each are given for the conduct of a second
order, isothermal, liquid phase reaction, AB. The reactors are to be arranged in
series. Find the overall conversion for the two possible reactor arrangements.
Data given: k = | m?/(kmol.s), Cao = 0.1 kmol/m? and 7 = 5 5 (for volume ५).

Develop expressions for optimum space time and maximum concentration of product

R for a series reaction with first order kinetics (A 5 R 5 S) ina CSTR. Assume that
the feed contains no R and 5. ‏عا‎ and ‏كا‎ are first order rate constants.

The irreversible gas-phase non-elementary reaction, A + 2B — C is to be carried out
isothermally in a constant pressure batch reactor.

The feed is at a temperature of 227 °C, a pressure of 1013 kPa, and its composition is
33.3% A and 66.7% B. Laboratory data taken under identical conditions are as
follows:

-ra (11101/0175)

Determine: (i) The volume of a plug flow reactor required to achieve 30%

conversion of A for an entering volumetric flow rate of 2 m?/min., (ii) The volume of

a CSTR required to take the effluent from the plug flow reactor (PFR) above and

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