Process Equipment and Plant Design The raio, (properller agitator dia/tank dia) is normally taken as 0.15-030 0.5-0.65 0.75-0.85 0.60-0.90 0.15-030 0.5-0.65 0.75-0.85 0.60-0.90 ANSWER DOWNLOAD EXAMIANS APP
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 An adequate clearance between the tray and the shell wall of a distillation column is provided to Avoid back-trapping None of these Allow for thermal expansion and facilitate installation Drain the liquid from the tray when the unit is not in operation Avoid back-trapping None of these Allow for thermal expansion and facilitate installation Drain the liquid from the tray when the unit is not in operation 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. 28 38 16 19 28 38 16 19 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability. 15 10 5 2 15 10 5 2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio. 1.1 to 1.5 2.7 to 3 1.6 to 2 2.2 to 2.6 1.1 to 1.5 2.7 to 3 1.6 to 2 2.2 to 2.6 ANSWER DOWNLOAD EXAMIANS APP
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