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PROCESS EQUIPMENT AND PLANT DESIGN

Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

43864
44180
18-22
43990

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Process Equipment and Plant Design
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

10 mm
8 mm
5 mm
6 mm

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Process Equipment and Plant Design
The distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called

None of these
Skirt clearance
Downcomer liquid seal
Static submergence

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Process Equipment and Plant Design
Liquid gradient over the tray results due to the

Low gas velocity
Resistance offered to flow of liquids by caps & risers and the flow of gas
Large plate spacing
Large reflux ratio

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Process Equipment and Plant Design
Large process vessels operating under extreme temperature and pressure conditions are normally clad/ lined with materials like stainless steel, aluminium, nickel & its alloys, copper & its alloys and titanium. The cladding thickness is generally about __________ percent of the total thickness.

1 to 5
40 to 50
10 to 20
30 to 40

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