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?

Related Mcqs:

The necessary wall thickness for a metallic storage vessel is a function of the ___________________?

A. Ultimate tensile strength (or yield point) of the material and operating temperature B. Operating pressure and welding/joint efficiency C. Diameter of the vessel D. All A., B. and C....

The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is___________________?

A. 0 B. ∞ C. 1 D. Minimum...

An under-designed steam trap will___________________?

A. Waste steam B. Destroy itself of acceleration wear due to rapid recycling C. Back up condensate and cause water hammer in steam line D. None of these...

For a cylindrical vessel of moderate height, the weld joint efficiency for joints parallel to the cylindrical axis is given as 1.0; while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylindrical vessel, what value of weld joint efficiency should be used ?

A. 0.8 B. 0.9 C. 1.0 D. (0.8)0.5...

Pick out the wrong statement?

A. Safety valves are provided in heat exchangers for removal of non-condensable B. Liquid metals and Dowtherm are used for very high temperature heating C. In a shell and tube heat exchanger, high pressure fluid is generally routed through the tube D. A loop seal or U-seal is provided in a vertical condenser sub-cooler to … Pick out the wrong statement?Read More...