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Home ‣ Chemical Engineering ‣ Process Equipment and Plant Design Comments
  • Question

  • In distillation columns, bubble caps are held in place over trays by


  • Options
  • A. rivets
  • B. a hold down bar
  • C. bolts
  • D. both (b) and (c)

  • Correct Answer
  • both (b) and (c) 

    • Process Equipment and Plant Design problems

    Search Results

    • 1. Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

    • Options
    • A. 1.25
    • B. 1.75
    • C. 2.5
    • D. 3.5
      • Discuss
    • 2. In case of plain carbon steel, butt welded joints are used for shell plate thickness ? __________ cms.

    • Options
    • A. 1.2
    • B. 0.5
    • C. 3.8
    • D. 6.8
      • Discuss
    • 3. __________ tower is the most suitable gas-liquid contacting device involving highly corrosive fluids.

    • Options
    • A. Sieve plate
    • B. Packed
    • C. Bubble cap plate
    • D. None of these
      • Discuss
    • 4. Slope of countercurrent flow rotary drier is in the range of __________ meter/metre.

    • Options
    • A. 0 to 0.08
    • B. 0 to 0.8
    • C. 0 to 1.5
    • D. 0 to 2.2
      • Discuss
    • 5. Maximum plate efficiency is achieved in case of __________ flow.

    • Options
    • A. split
    • B. cross
    • C. cascade
    • D. reverse
      • Discuss
    • 6. The normal range of velocity of water in pipes is __________ m/sec.

    • Options
    • A. 0.1-0.5
    • B. 1-2
    • C. 10-50
    • D. 15-30
      • Discuss
    • 7.  for couplings and unions would be

    • Options
    • A. 60
    • B. 200
    • C. 350
    • D. negligible
      • Discuss
    • 8. Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?

    • Options
    • A. Segmental baffle
    • B. Flat plate extending across the wall
    • C. Disk type baffle
    • D. Helical type baffle
      • Discuss
    • 9. The longitudinal stress induced in a thin walled cylinderical vessel under internal pressure is

    • Options
    • A. pd/2t
    • B. pd/4t
    • C. pd/t
    • D. pd/8t
      • Discuss
    • 10. In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter.

    • Options
    • A. l/5th
    • B. l/15th
    • C. l/30th
    • D. l/50th
      • Discuss

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