Process Equipment and Plant Design Back-trapping in a distillation column results due to Excessive liquid gradient over the tray High gas velocity Low gas velocity Low reflux ratio Excessive liquid gradient over the tray High gas velocity Low gas velocity Low reflux ratio ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For turbine agitator, the impeller diameter is about 0.1 to 0.2 d 0.95 d 0.3 to 0.5 d 0.65 to 0.85 d 0.1 to 0.2 d 0.95 d 0.3 to 0.5 d 0.65 to 0.85 d ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design An adequate clearance between the tray and the shell wall of a distillation column is provided to Drain the liquid from the tray when the unit is not in operation Allow for thermal expansion and facilitate installation None of these Avoid back-trapping Drain the liquid from the tray when the unit is not in operation Allow for thermal expansion and facilitate installation None of these Avoid back-trapping ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Compensation against openings in process vessels for giving inlet and outlet connections, for providing sight glasses and manholes etc. is provided for strength and rigidity. The most efficient type of compensation is of __________ type. Flared out Nozzle or rim Ring plate Fluid in Flared out Nozzle or rim Ring plate Fluid in ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell Decreases upwards Increases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout Decreases upwards Increases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Remains same throughout 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. 38 16 19 28 38 16 19 28 ANSWER DOWNLOAD EXAMIANS APP
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