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Normally, the length to diameter ratio of rotary dryers varies from 4 to 10 and for its economic operation; the number of transfer units (NTU) for such dryers varies from ?
Hamad Process Equipment and Plant Design 14/05/2023
- ___________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids?
- A. Sieve plate B. Packed C. Bubble cap plate D. None of these...
- Value of Peclet number = ∞, is the representative of___________________?
- A. Laminar flow B. Complete back mixing C. Plug flow D. Eddy diffusivity = 0...
- Filtration rate is affected by the________________?
- A. Pressure drop across the cake & filter medium B. Cake & filter medium resistance C. Area of filtering surface & the viscosity of filtrate D. All A., B. and C....
- The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the_________________?
- A. Equal sized reactors are the best B. Smaller reactor should come first C. Larger reactor should come first D. None of these...
- The thickness of segmental baffles (25 -35% cut truncated plates usually) is generally _____________ the tube wall thickness?
- A. Equal to B. Twice C. Four times D. Half...
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