Process Equipment and Plant Design Questions

• Thickness of the frame of a plate and frame filter as compared to that of plates is
• In a __________ rivetted joint, the rivets in the various rows are opposite to each other.
• Height equivalent to a theoretical plate (HETP) is the height of packing that will give the same separation as one theoretical plate in gas-liquid mass transfer operations like distillation, absorption/stripping and humidification/dehumidification. HETP which is experimentally determined, depends upon the
• Pick out the wrong statement:
• Speed of industrial paddle agitator ranges from __________ rpm.
• Needle valves are generally not used for
• Saddle supports are used for supporting __________ vessels.
• Which of the following is used to set the diameter of the distillation column?
• The most common standard size of bubble caps used in industrial operation is
• With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will
• The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.
• Cooling water fouling factors vary in the range of 0.001 to 0.003
• Optimum reflux ratio in a continuous distillation column is determined by the
• Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.
• Rivets are generally specified by the
• An underdesigned steam trap will
• The diameter of a propeller agitator used in agitation tank ranges from __________ percent of the tank diameter and its peripherial speed is normally 300 to 500 metres/minute.
• Pick out the wrong statement pertaining to the comparative evaluation of performance of the packed tower and the plate tower.
• Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?
• Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation?