Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Reflux is not a saturated liquid

Sensible heat changes for vapour & liquid are negligibly small

Heat of mixing of normal liquid is assumed to be zero

Molar latent heat of the two components are equal

Reflux is not a saturated liquid

Sensible heat changes for vapour & liquid are negligibly small

Heat of mixing of normal liquid is assumed to be zero

Molar latent heat of the two components are equal

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20

< 10

> 10

30

> 20

< 10

> 10

30

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Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Increases very rapidly

Decreases very rapidly

Remains constant

Increases linearly

Increases very rapidly

Decreases very rapidly

Remains constant

Increases linearly

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/2t

pd/3t

pd/4t

pd/t

pd/2t

pd/3t

pd/4t

pd/t

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Cool the liquid before it flows down

Permit release of entrained vapour in the liquid

Reduce the discharge fluctuation

Ensure better vapour-liquid contact

Cool the liquid before it flows down

Permit release of entrained vapour in the liquid

Reduce the discharge fluctuation

Ensure better vapour-liquid contact

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Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

All of these

Pressure and temperature

Vapour molecular weight

Molal flow rate of vapour

All of these

Pressure and temperature

Vapour molecular weight

Molal flow rate of vapour

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Process Equipment and Plant Design

Process Equipment and Plant Design Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

Process Equipment and Plant Design With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Process Equipment and Plant Design The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

Process Equipment and Plant Design A claming section before the liquid flows into the downcomer is privided to

Process Equipment and Plant Design In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.

Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Process Equipment and Plant Design
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.