Other separation equipment
50 questions available
Questions
In the general procedure for separation column design, what is the first step that needs to be calculated?
View answer and explanationWhat is the definition of the net area available for vapor-liquid disengagement (An) for a single-pass plate as described in Section 17.13.2?
View answer and explanationFor designing separation columns, what is the recommended range of vapor velocity as a percentage of the flooding velocity?
View answer and explanationWhat correction should be applied to the K1 value for flooding velocity estimation if the hole:active area ratio is 0.08, according to the table on page 677?
View answer and explanationWhat is the recommended range for weir height in columns operating above atmospheric pressure?
View answer and explanationAccording to Section 17.13.10, what is the preferred hole size for nonfouling applications on a sieve plate?
View answer and explanationWhat is the normal range for the hole pitch (lp) as a multiple of the hole diameter?
View answer and explanationWhat is the minimum recommended residence time in the downcomer to allow for the disengagement of entrained vapor?
View answer and explanationIn the plate design procedure, if checking the downcomer backup reveals it is too high, what is the recommended corrective action?
View answer and explanationIn the plate design calculation in Example 17.6, what was the calculated downcomer backup (hb)?
View answer and explanationIn Example 17.6, the initial check for weeping showed that the actual minimum vapor velocity was lower than the minimum design velocity. What action was taken to rectify this?
View answer and explanationWhat is the primary advantage of using packed columns over plate columns for handling corrosive liquids?
View answer and explanationFor a column with a diameter greater than 0.9 m, what is the recommended packing size range?
View answer and explanationWhat is the packing factor (Fp) for 2.0 inch metal Raschig rings according to Table 17.2?
View answer and explanationFor distillation applications using 38 mm (1.5 in) Pall rings, what is the approximate Height Equivalent to a Theoretical Plate (HETP)?
View answer and explanationWhat is the primary function of an impingement baffle in a shell and tube heat exchanger?
View answer and explanationIn the TEMA designation for shell and tube heat exchangers, what does the first letter of the three-letter code represent?
View answer and explanationWhat is the recommended tube pitch for a triangular tube arrangement in a shell and tube heat exchanger?
View answer and explanationFor a shell and tube heat exchanger, what is the typical range for the optimum tube length-to-shell diameter ratio?
View answer and explanationWhat is the main purpose of using baffles in the shell of a shell and tube heat exchanger?
View answer and explanationWhat is the generally considered optimum range for a segmental baffle cut?
View answer and explanationUnder what condition should an economic exchanger design be reconsidered, based on the temperature correction factor Ft?
View answer and explanationWhen allocating fluids in a shell and tube exchanger, where should the more corrosive fluid be placed?
View answer and explanationWhat is the typical design velocity for liquid process fluids on the tube-side of a shell and tube exchanger?
View answer and explanationWhat is the suggested allowable pressure drop for liquids with a viscosity between 1 and 10 mN s/m2 in a heat exchanger?
View answer and explanationIn the general equation for turbulent flow heat transfer inside tubes (Nu = C Re^a Pr^b (mu/mu_w)^c), what is the generally accepted value for the Reynolds number exponent 'a'?
View answer and explanationFor laminar flow (Re less than 2000) inside tubes, what is the recommended minimum value for the Nusselt number if the value calculated by Equation 19.13 is lower?
View answer and explanationWhat is the recommended number of velocity heads to account for pressure losses per pass in a heat exchanger, according to Frank's recommendation cited in the text?
View answer and explanationIn the Tinker flow model for shell-side analysis, what does stream C represent?
View answer and explanationWhat is the recommended design velocity for vapors at atmospheric pressure on the shell side of a heat exchanger?
View answer and explanationWhat does a TEMA type BEU exchanger signify?
View answer and explanationAccording to the TEMA standards, what is the minimum nominal shell thickness for a 760-990 mm diameter carbon steel pipe shell?
View answer and explanationWhat is the primary disadvantage of a fixed tubesheet (TEMA type BEM) heat exchanger?
View answer and explanationIn Equation 19.3b for estimating bundle diameter (Db), what does K1 represent?
View answer and explanationFor a shell and tube exchanger with a triangular pitch of 1.25do, 2 tube passes, and a bundle diameter of 1000 mm with 25 mm tubes, what is the estimated number of tubes (Nt)?
View answer and explanationWhat is the primary reason for using a packed column instead of a plate column for small-diameter columns (less than 0.6 m)?
View answer and explanationIn packed column design, what does HETP stand for?
View answer and explanationWhat are the recommended design values for pressure drop in packed columns used as absorbers and strippers?
View answer and explanationWhat is the function of a liquid redistributor in a packed column?
View answer and explanationWhat is the general guide for the maximum bed height in a packed column using Pall rings and saddles before liquid redistribution is needed?
View answer and explanationIn solvent extraction, under what condition might it be more economic than distillation?
View answer and explanationIn solvent selection for extraction, what is the partition ratio?
View answer and explanationFor liquid-liquid extraction, which flow arrangement is the most efficient and most commonly used?
View answer and explanationOn a triangular equilibrium diagram for liquid-liquid extraction, what is the plait point?
View answer and explanationWhat is the typical range for the Height Equivalent to a Theoretical Plate (HETP) in random packings for extraction?
View answer and explanationWhat is the definition of the active area (Aa) for a single-pass plate?
View answer and explanationAccording to the plate design procedure, what is the recommended action if the check for entrainment shows it is too high?
View answer and explanationFor a stainless steel plate, what is the minimum hole size that can typically be punched?
View answer and explanationWhat is the total plate pressure drop (ht) considered acceptable in the conclusion of the calculation in Example 17.6?
View answer and explanationIn the final plate specification from Example 17.6 shown in Figure 17.44, what is the specified hole pitch?
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