Process Equipment and Plant Design Questions

• The stress developed in a material without any permanent set is called the
• The main purpose of providing stepping on the trays is to
• Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as
• 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
• The value of fouling factor depends upon the
• Steam side heat transfer co-efficient for design consideration under ordinary condition can be assumed to be about __________ kcal/hr.m2.°C.
• __________ tray arrangement is recommended for distillation column having diameter upto 4 ft.
• 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.
• Pick out the wrong statement
• In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon
• The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the
• for fully open gate valves would be
• Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method
• Generally, elliptical dished heads
• A head comprises of straight flange section, corner torus, section and central dished section. Crown radius and knuckle radius in a head is related respectively to the
• LMTD correction factor is used in heat exchanger design for
• With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.
• The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
• Vertical vessels are not supported by
• Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )