The condition where reflux and stripping ratio approaches to infinity is called as

When heat is supplied to the bottom of liquid stage to vaporise a portion, it is called

Condensing

Boil-up

Cooling

Desalting

When cooling is applied to condense a part of an overhead product, it is called

Reflux

Dew point

Boil-up

Relative BP

When rectifying, stripping, and combining both in single-stage process, this is called

Differentiation

Fractionation

Recycle

Purging

The external reflux ratio can be defined as

L{0}/D

D/L

D{0}/L

V/L

The boil-up ratio can be expressed as the ratio

V/L

D/V

V/W

L/W

Optimum reflux ratio ranges between

2 to 5

2 to 3

1.0 to 1.5

1.0 to 2.5

If stages are fixed, then reflux ratio

Decreases

Increases

Equals zero

Approaches infinity.

If reflux increases, then the cost of operation

First increases, then decreases

Goes on increasing

Approaches infinity

First decreases, then increases

HETP is defined as

High energy temperature point

High efficiency tower plate

Height equivalent to theoretical plate

Homotomy engineer temperature point

The minimum number of trays can be calculated using

Bernoulli’s eon

Henry’s law

Fenske’s equation

Homotomy equation

Which of the following is an important assumption of the McCabe-Thiele method?

Heat loss is maximum

Heat loss is negligible

Heat loss is infinite

Cannot be specified

The point where the equilibrium curve and the component balance meet is called

Murphree point

Intersection point

Junction point

Pinch point

456

284

303

234

An ideal distillation stage is one that

Operates at steady state

Operates at high temperature

Operates at low pressure

Operates at high pressure

Quiz/Test Summary

Title:
Key Fractionation Concepts (McCabe-Thiele Diagram, Constant Molar Overflow, and More)

Questions:
15

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