PROCESS EQUIPMENT AND PLANT DESIGN QUIZ

Tubes to avoid the expansion of high pressure shell construction

Shell side for large overall heat transfer co-efficient

Shell side, if the flow is counter-current and tube side if the flow is co-current

Shell side for smaller total pressure drop

Approximate

Inner

None of these

Outer

pD/6t

pD/2t

pD/3t

pD/4t

A continuous contactor

A differential stage contactor

A finite stage contactor

Used only for distillation, not for absorption

Horton sphere is used for the storage of liquid at sub-zero temperature at very high pressure upto 200 kg/cm²

Horton sphere is used for the storage of gases and volatile liquid at a moderate pressure of 1 to 10 kg/cm²

Thickness of spherical shell is half that of the cylinderical vessel under same operating pressure condition. Besides, the ratio of surface area to volume is less for sphere than any other shape ; hen

Diameter of Horton sphere is normally 6 to 25 metres and it is supported by 6 to 12 nos. tubular or rolled section column

Either A or B, whichever is smaller

6% of I.D.

3 times the thickness

Either A or B, whichever is larger

Enhancing mixing rate

Avoiding vortex formation

Relieving excess pressure

Creating turbulence

G0.5

G0.8

G1.5

G0.2

Tie rods are fixed at one end in the tube sheet by making blind holes and the minimum number of tie rods is 4 with at least 10 mm diameter

Clearance between shell & baffles and between tube & baffles should be minimum to avoid by-passing of the fluid, but it should be enough to permit the removal of tube bundle

Baffles are supported independently of the tubes by tie rods and positioned by spacers

Bracket supports are used for horizontal shell, while saddle support is used for vertical shell

Small

Large horizontal cylindrical

Thick walled tall

Tall but empty