Process Equipment and Plant Design Questions

• Hold up of material in a operating rotary drier is in the range of
• In case of design of a shell and tube heat exchanger,
• Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.
• A binary liquid azeotropic mixture has boiling point higher than either of the components, when it shows __________ deviation from Raoult's Law.
• Vertical condenser is advantageous to the horizontal condenser from operation point of view, when
• In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)
• For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.
• Theoretically calculated diameter of the stripping section of the continuous rectification column is __________ that of the enriching section.
• A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is
• Rate of filtrate delivery is inversely proportional to the
• In a thin cylindrical shell, the hoop stress is __________ stress.
• Which of the following factors determine the amount of entrainment in a distillation column?
• "A claming section" before the liquid flows into the downcomer is privided to
• In shell and tube heat exchangers, straight tie rods are used to
• In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
• Apex angle of conical heads used in the bottom heads of chemical process equipments is usually
• The absorption factor is defined as (where, S1 = slope of the equilibrium curve, S2 = slope of the operating line)
• Nominal size of a pipe is an indication of its __________ diameter.
• Pressure drop due to pipe fittings can be estimated by the equation, , where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (dimensionless) for 45° elbow and 180° close return bends would be respectively around
• The retention time of material in a rotary dryer depends upon its