Process Equipment and Plant Design Reflux ratio variation in a distillation column is between Zero and infinity Minimum and infinity None of these Zero and one Zero and infinity Minimum and infinity None of these Zero and one ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi) Η = 24.6 (Δp/μ) Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 0.25 log μ - 1.67 Η = 24.6 (Δp/μ) Η = 1.66 - 0.25 log μ Η = 17 - 61.1 log μ Η = 0.25 log μ - 1.67 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower? Size, shape, orientation and surface of the packing particles All of these Density and viscosity of fluids Fluid flow rates Size, shape, orientation and surface of the packing particles All of these Density and viscosity of fluids Fluid flow rates ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A claming section before the liquid flows into the downcomer is privided to Permit release of entrained vapour in the liquid Cool the liquid before it flows down Reduce the discharge fluctuation Ensure better vapour-liquid contact Permit release of entrained vapour in the liquid Cool the liquid before it flows down Reduce the discharge fluctuation Ensure better vapour-liquid contact ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design 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 (1.2)2/3 (1.2)3/2 (1.2)5/3 (1.2)3/5 (1.2)2/3 (1.2)3/2 (1.2)5/3 (1.2)3/5 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Rate of filtrate delivery is inversely proportional to the Filtering area & the pressure difference driving force Viscosity of filtrate Both A & B Cake & filter medium resistance Filtering area & the pressure difference driving force Viscosity of filtrate Both A & B Cake & filter medium resistance ANSWER DOWNLOAD EXAMIANS APP
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