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2003 Course Reaction Eng. - II

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Total No. of Questions : 8] [Total No. of Pages :3 [3864] - 363 B.E. (Petrochemical) REACTION ENGINEERING - II (2003 Course) P1161 Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any three questions from each section. 2) Answer to the two sections should be written in two separate answer books. 3) Figures to the right indicate full marks. 4) Assume suitable data wherever necessary. 5) Use of electronic calculator is allowed. SECTION - I Q1) A catalytic reaction A 2 R is studied in a plug flow reactor using various amounts of catalyst and 20 lit/hr of pure A feed at 3.2 atm and 117oC. The following data is recorded. Run No. 1 2 3 4 5 W kg cat 0.020 0.040 0.080 0.120 0.160 0.074 0.060 0.044 0.035 0.029 CA out mol/lit Calculate weight of the catalyst needed for 55% conversion of A in a) Isothermal fixed bed reactor and b) An isothermal fluidized bed reactor both operating at 117oC for feed flow rate of 2000 m3/hr and feed containing 40% of A at 7atm total pressure. [18] Q2) a) b) Gas phase catalytic reaction A + B <=> 2 R takes place in the presence of an inert carrier material I that can get adsorbed on the catalyst surface without poisoning it. Find the rate expression when surface reaction controls. [8] Discuss in brief a method each for measuring surface area and bulk voidage of a porous catalyst. [8] P.T.O.

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