The minimum plate spacing in most of the petroleum refinery distillation columns (of dia > 3 ft) is normally _____________ inches?

Related Mcqs:

In a pressure vessel containing multiple openings of various dimensions at different parts, stress concentration at the edges of the opening is maximum which becomes negligibly small beyond the area covered by ______________ times the hole diameter?

A. Two B. Five C. Ten D. Twenty...

Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about _______________ mm Hg (referred to a 760 mm mercury barometer)?

A. 250 B. 450 C. 650 D. 750...

Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the__________________?

A. Practical limit reached, due to low heat transfer rate because of inadequate temperature difference B. Economic limit reached, when the plant cost exceeds the saving of steam C. Both A. & B. D. Neither A. nor B....

What is the slope of the operating line in the stripping section of a distillation column ?

A. 0 B. ∞ C. > 1 D. < 1...

Seamless pipe is made________________?

A. From rolled strips formed into cylinders and seam-welded B. By extrusion & casting into static and centrifugal molds C. By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer point and further reducing it by rolling gas drawing D. Both B. and C....