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2003 Course Chemical Process Synthesis

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Total No. of Questions : 12] P1362 [Total No. of Pages : 2 [3764]-323 B.E. (Chemical) CHEMICAL PROCESS SYNTHESIS (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) 7) Answer any three questions from each section. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Your answers will be valued as a whole. Use of logarithmic tables slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) Explain two approaches to chemical process design. b) Explain in short over all process design. [8] [8] OR Q2) a) Discuss idealized reactor model. b) Explain in short different parameters in choice of reactor. [8] [8] Q3) a) Discuss choice of reactor for mixed parallel and series when the parallel [8] reaction has a higher order than the primary reaction. b) Explain the role of reactor concentration on equilibrium conversion with suitable example. [8] OR Q4) a) Explain four possible arrangements for fixed bed reactor. b) Explain fluidized bed catalytic reactor with neat sketch. [8] [8] Q5) a) State and explain with principle the settling processes used for separation of hetrogineous mixtures. [10] b) Discuss three stage evaporator. [8] OR P.T.O. Q6) Write short notes on : [18] a) Practical reactors. b) Thermal dryers. c) Absorption. SECTION - II Q7) a) Discuss thermal coupling of the prefractionator arrangement. [8] b) Explain the concept of internal mass flow in sequence of simple distillation columns. [8] OR Q8) a) Explain direct and indirect sequences of simple distillation columns for a three component separation. [8] b) What is optimization of a reducible structure. [8] Q9) a) What are threshold problems associated with energy targets for heat [8] exchanger networks. b) Discuss simple furnace method. [8] OR Q10) a) Explain Integration of steam turbine with the process above the pinch.[8] b) Explain heat recovery problem with one hot stream and one cold stream. [8] Q11) Write in brief on : [18] a) Toxic release from processes. b) Fire hazards. OR Q12) Write short notes on : [18] a) Unconfined vapour cloud explosion. b) Safety devices. c) Quantitative measures on inherent safety. [3764]-323 2

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