Chemical Engineering - Process Equipment and Plant Design

26.
A high vapour velocity is required for high plate efficiency in a seive plate coloumn. The satisfactory value of operating vapor velocity for design purpose in seive plate column is about __________ percent of the flooding velocity.
45
60
80
95
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
The approximate liquid depth in an agitation tank is equal to (where, d = tank diameter)
0.5 d
0.75 d
d
2 d
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
Baffle width is normally taken as __________ times the tank diameter.
0.1-0.12
0.4-0.5
0.45-0.6
0.2-0.45
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
A cylinderical pressure vessel of volume 6 πm3 has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm2 and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to
5 mm
6 mm
8 mm
10 mm
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
Which of the following packing materials provides for maximum mass transfer ?
Lessig rings.
Raschig rings.
Cross-partition rings.
All give the same value.
Answer: Option
Explanation:
No answer description is available. Let's discuss.