Process Equipment and Plant Design Questions

Hopper/heads geometry in process vessels: the included apex angle commonly used for CONICAL BOTTOM HEADS on chemical process equipment is approximately

Pipe schedules and dimensions: two steel pipes of the SAME nominal size but DIFFERENT schedule numbers will have the same _____ by definition of standard pipe sizes.

Comparing pipe schedules: relative to Schedule 80 of the same nominal size, the wall thickness of Schedule 40 pipe is

Feed thermal condition in distillation: what is the value of the “q” line slope parameter for a SATURATED LIQUID feed entering a distillation column?

Heat exchanger geometry: in a shell-and-tube exchanger, the “TUBE PITCH” is defined as the _____ between adjacent tubes on the same pattern.

LMTD correction in multi–shell-pass exchangers In a shell-and-tube heat exchanger, how does the LMTD correction factor FT change when the number of shell passes is increased (for the same terminal temperatures and number of tube passes)?

Materials for pressure vessels – identify the one seldom used Among the listed steels, which is seldom used for pressure vessel construction due to quality and through-thickness property concerns?

Siting of petroleum storage tanks – underground vs. aboveground At petrol pumps and similar facilities, storage tanks are normally installed underground when the required capacity is less than how many kilolitres (kL)?

Packed towers vs. plate (tray) towers – choose the correct statement Considering corrosion, foaming tendency, and pressure drop, which of the following statements is correct?

Tube layout choice – triangular vs. square pitch in shell-and-tube exchangers Compared with a square pitch, a triangular pitch tube layout in a given shell diameter:

Supports for vertical vessels – understanding lug supports Which statement best characterizes lug supports for vertical vessels in comparison to skirt supports?

Pressure drop comparison – 1–2 versus 1–1 heat exchanger (tube side) For turbulent flow in the tubes, the tube-side pressure drop in a 1–2 exchanger is approximately how many times that in a 1–1 exchanger of the same size and tube count at the same liquid flow rate?

Bag filter operation – typical pressure drop range What is the normal operating pressure drop range across an industrial baghouse (fabric filter), expressed as mm water gauge?

Rotary vacuum drum filters – typical drum speed What is the normal rotational speed range of the drum in a rotary vacuum drum filter (RVDF), expressed in revolutions per minute (rpm)?

Stuffing box – primary function in fluid-handling equipment In pumps and valves, a stuffing box is primarily used for which purpose?

Agitated vertical cylindrical vessel design: Pick the single WRONG statement about geometry and agitation performance.

Packed absorption tower design data: Operating velocity is typically 40–50% of flooding. What pressure drop is normally used for design per metre of packing (mm H2O per m)?

Basket-type natural-circulation evaporator: Pick the WRONG statement about configuration and typical service.

Thick-walled cylinder under internal pressure: Where is the maximum tensile (hoop) stress located?

Strength terminology in materials: The stress beyond which a material shows permanent set is the yield stress; the highest stress that can be applied without any permanent set is called the __________.