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2003 Course Process Equipment Design - II

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Total No. of Questions : 12] [Total No. of Pages : 4 P1549 [3764]-324 B.E. (Chemical) PROCESS EQUIPMENT DESIGN - II (Rev. 2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) 2) Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. 3) Figures to the right indicate full marks. 4) Your answers will be valued as a whole. 5) Assume suitable data, if necessary. SECTION - I Q1) a) Describe various types of jackets and coils used in reaction vessel with neat sketches. [10] b) Calculate the diameter of shaft used in agitation system. Torque acting over the shaft is 115,000 kg.cm, while bending moment acting over the shaft is 34,600 kg.cm. Ultimate tensile strength of shaft material = 6900 kg/cm2. Ultimate shear stress is 75% of ultimate tensile stress. Factory of safety used is 6.0. [8] OR Q2) a) A reaction vessel is fitted with a plain jacket for heating the reactor contents. With the help of the following data : Vessel shell diameter (internal) = 2130 mm, Jacket internal diameter = 2260 mm, Jacket length = 2500 mm, Pressure inside the reactor = 0.55 N/mm2, Jacket internal pressure = 0.35 N/mm2, Temp. = 150 C, MOC = Open hearth steel with allowable stress = 98 N/mm2, Modulus of elasticity = 190 kN/mm2, Poissons ratio = 0.30 Design the shell and jacket for the reaction vessel. [10] b) Explain heat transfer in reaction vessel. [8] P.T.O.

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