Process Equipment and Plant Design

A. Generally, a skirt clearance of 0.5″ to 1.5′ is recommended to prevent plugging of the slots by
residue build up
B. The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles
C. If sufficient slot area is not provided, the gas may pass through the skirt clearance
D. None of these

Log mean temperature difference in case of multi-pass shell and tube heat exchanger is always_________________?

A riveted joint does not fail by _____________________ of rivets?

In case of a ‘thin’ pressure vessel, the ratio of its diameter to wall thickness is_________________?

In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed ______________ of the column diameter?

In a _____________ riveted joint, the number of rivets decreases from the innermost row to the outermost row?

Movement of pipeline caused by thermal expansion is taken care by providing ___________________?

Fresh water carrying pipelines in chemical industries are coloured with _______________ color?

The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about _________________ mm of water column per metre height of packing?

Pick out the wrong statement pertaining to the design of the distillation column?

In a distillation column, minimum clearance to be maintained between the overflow weir and the last row of the bubble caps is ______________ cms?