In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a __________________?

Related Mcqs:

1. In a distillation column, bubble caps are located on trays with a pitch of ______________ times the outside diameter of the caps?

   A. 1.3 to 2
   B. 1.6 to 2
   C. 2.5
   D. 1.5 to 3

2. For a given design of bubble cap, the number of bubble caps to be used per tray is set by the _________________?

   A. Allowable gas velocity through the slots
   B. Plate spacing
   C. Diameter of the column
   D. All A., B. and C.

3. Holes of a sieve tray are arranged in triangular pitch of _________________ times the hole diameter?

   A. 1.5 to 2
   B. 2.5 to 5
   C. 5 to 10
   D. 10 to 15

4. Triangular pitch tube layout as compared to square pitch in a shell and tube heat exchanger________________?

   A. Permits the use of less tubes in a given shell diameter
   B. Facilitates comparatively easier external cleaning because of large clearance
   C. Permits the use of more tubes in a given shell diameter
   D. Both B. and C.

5. Shell side heat transfer co-efficient in case of square pitch as compared to the triangular pitch under similar condition of fluid flow and tube size is_____________?

   A. More
   B. Same
   C. Less
   D. Twice

6. In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement ?

   A. Results in higher shell side pressure drop
   B. Can accomodate less number of tubes for a given shell diameter
   C. Facilitates easier shell side cleaning; hence is more suitable for handling high dirt factor shell
   side fluid
   D. Creates relatively lower turbulence on the shell side resulting in lower shell side heat transfer
   co-efficient

7. In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about _______________ cms?

   A. 10
   B. 20
   C. 30
   D. 35

8. Pick out the wrong statement about the design of sieve plate column and the bubble cap column ?

   A. The downcomer design and the residence time in the downcomer is almost same for sieve
   plate and bubble cap columns
   B. Weir length for a bubble cap plate is the same as that for the sieve plate
   C. Weir height for a bubble cap plate column is the same as that for a sieve plate column
   D. Weir height in case of a bubble cap plate ranges from 50 to 150 mm and is higher than the
   sieve plate

9. Bubble cap plate column is___________________?

   A. A finite stage contactor
   B. Used only for distillation, not for absorption
   C. A differential stage contactor
   D. A continuous contactor

10. Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around _________________?

    A. 2.5″
    B. 0.5″
    C. 5″
    D. 50% of the plate spacing