Process Equipment and Plant Design.docx

Fresh water carrying pipelines in chemical industries are coloured with \_\_\_\_\_\_\_\_\_\_ color. sea green (correct) brown yellow red Which of the following material is seldom used for pressure vessel construction ? Rimmed steel (correct) Mild steel Killed steel Semi-killed steel The ra...

Fresh water carrying pipelines in chemical industries are coloured with \_\_\_\_\_\_\_\_\_\_ color. sea green (correct) brown yellow red Which of the following material is seldom used for pressure vessel construction ? Rimmed steel (correct) Mild steel Killed steel Semi-killed steel The ratio of shear stress to shear strain is called bulk modulus shear modulus (correct) modulus of rigidity modulus of elasticity 25 per cent cut segmental baffle means that the baffle height is 75% of the I.D. of the shell. (correct) height is 25% of the I.D. of the shell. spacing is 75% of its height. width is 25% of its height. Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than \_\_\_\_\_\_\_\_\_\_ kilolitres. 20 30 45 (correct) 85 Lug support is With increase in the number of shell passes, the value of *FT* Holes of a sieve tray are arranged in triangular pitch of \_\_\_\_\_\_\_\_\_\_ times the hole diameter. In case of a shell and tube heat exchanger, the minimum shell thickness for carbon steel (inclusive of corrosion allowance) depends on shell diameter and is in the range of \_\_\_\_\_\_\_\_\_\_ mm. The stress developed in a material without any permanent set is called the In a shell and tube heat exchanger, the \'tube pitch\' is defined as the Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele\'s method ? The value of fouling factor depends upon the In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about \_\_\_\_\_\_\_\_\_\_ cms. Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about \_\_\_\_\_\_\_\_\_\_ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate. To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of In a heat exchanger, shell side fluid velocity can be changed by changing the tube Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure ? It is not desirable to design a heat exchanger for *LMTD* correction factor, *FT*, of less than A rivetted joint does not fail by \_\_\_\_\_\_\_\_\_\_ of rivets. Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger Bracket supports are the most suitable for supporting \_\_\_\_\_\_\_\_\_\_ vessels. In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon Two iron pipes of the same nominal diameter but different schedule numbers will have the same Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about \_\_\_\_\_\_\_\_\_\_ kcal/hr.m2.°C. Pick out the wrong statement Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about \_\_\_\_\_\_\_\_\_\_ percent. In chemical process equipments, the conical bottom heads used, usually has an apex angle of Smaller sized packings are generally dumped to the packed columns, and the large ones of size greater than \_\_\_\_\_\_\_\_\_\_ mm are stacked individually, which provides better control over bed porosity and offers lower gas pressure drop. Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is Correct use of \'factor of safety\' is very important in equipment design. It is defined as the ratio of the The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about \_\_\_\_\_\_\_\_\_\_ mm of water column per metre height of packing. \_\_\_\_\_\_\_\_\_\_ tray arrangement is recommended for distillation column having diameter upto 4 ft. What is the value of \'*q*\' for saturated liquid feed to a distillation column ? In perforated plate towers, the The main purpose of providing stepping on the trays is to The operating pressure drop range in a bag filter is about \_\_\_\_\_\_\_\_\_\_ mm water gauge. The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure. For laminar flow (*NRe* \< 2100) in steel pipe, the optimum inside pipe diameter is given by Pick out the correct statement. Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is Pick out the wrong statement pertaining to the design of a basket type evaporator. Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution. Speed of the drum of the rotary vacuum filter normally ranges from \_\_\_\_\_\_\_\_\_\_ rpm. A stuffing box is used for Pick out the wrong statement. In an agitated vertical cylinderical reaction vessel, the