PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

Skirt support is the most suitable for supporting __________ vessels.

Small horizontal

Large horizontal

Thick walled

Tall vertical

TRUE ANSWER : ?
YOUR ANSWER : ?

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.

40 to 50

15 to 30

55 to 75

5 to 10

TRUE ANSWER : ?
YOUR ANSWER : ?

In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.

2.2 to 2.6

2.7 to 3

1.6 to 2

1.1 to 1.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick out the wrong statement pertaining to a shell and tube heat exchanger.

The maximum value of baffle spacing is equal to the I.D. of the shell

Disk and doughnut baffle is the most commonly used baffle

The minimum value of baffle spacing is 50 mm

The maximum unsupported tube span is generally about 75 times tube diameter, but is reduced to about 60 times for aluminium, copper & alloys of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Rivets are generally specified by the

Shank diameter

Overall length

Head diameter

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Bubble cap plate column is

A differential stage contactor

A continuous contactor

Used only for distillation, not for absorption

A finite stage contactor

TRUE ANSWER : ?
YOUR ANSWER : ?

With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Vapour & liquid load both

Running cost of steam for reboiler

Running cost of cooling water for condenser

Fixed charges initially

TRUE ANSWER : ?
YOUR ANSWER : ?

In distillation columns, bubble caps are held in place over trays by

Rivets

A hold down bar

Both B and C

Bolts

TRUE ANSWER : ?
YOUR ANSWER : ?

A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

19

76

38

95

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of a continuous distillation column, increase in reflux ratio may result in the

All of these

Greater cost for the condenser coolant

Greater cost for the reboiler heat supply

Lower fixed charges for the column

TRUE ANSWER : ?
YOUR ANSWER : ?