Process Equipment and Plant Design In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio. 1.6 to 2 2.7 to 3 1.1 to 1.5 2.2 to 2.6 1.6 to 2 2.7 to 3 1.1 to 1.5 2.2 to 2.6 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design 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. 35 20 5 55 35 20 5 55 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids. 16 38 19 28 16 38 19 28 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is Less More Cither A or B; depends upon the I.D. of the pipe Same Less More Cither A or B; depends upon the I.D. of the pipe Same ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the All of these Liquid/vapor loading across the column remains constant Sensible heat differences are small, because the temperature changes from tray to tray is small Trouton's rule is applicable All of these Liquid/vapor loading across the column remains constant Sensible heat differences are small, because the temperature changes from tray to tray is small Trouton's rule is applicable ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A 'rupture disc' is provided in chemical equipments as an accessory meant for Relieving excess pressure Enhancing mixing rate Avoiding vortex formation Creating turbulence Relieving excess pressure Enhancing mixing rate Avoiding vortex formation Creating turbulence ANSWER DOWNLOAD EXAMIANS APP
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