Process Equipment and Plant Design MCQs

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

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 ; hence insulation required is less.

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

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

✅ The correct answer is option D.

1. Pick out the wrong statement pertaining to ‘Horton sphere’ used for the storage of liquid ammonia.

2. The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

3. An underdesigned steam trap will

4. In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the

5. Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )

6. For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness ?

7. Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as ‘d’ will be

8. In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

9. At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

10. For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.