Day 2

Front 1

Stage operation

Back 1

Yields discrete concentration changes

Front 2

Continuous phase contact operation

Back 2

Yields infinitesimal concentration changes

Front 3

Stripping

Back 3

Another term for desorption

Front 4

Distillation

Back 4

The unit operation by which miscible liquids are separated from one another through heat and mass transfer

Front 5

Extractive Distillation

Back 5

When the relative volatility of two miscible components is close to 1, the components can be separated by

Front 6

Reduce the column pressure

Back 6

To improve the degree of separation of the more volatile component from the less volatile component through distillation, the chemical engineer may, without changing the other variables,

Front 7

Makes separation difficult

Back 7

Increasing the operating pressure of a distillation column

Front 8

Ponchon-Savarit Method

Back 8

When the molal latent heat of vaporization of the binary system is very much dependent on concentration, the most appropriate method to use to determine the number of ideal stages is

Front 9

Water

Back 9

Open steam binary rectification may be applied with success if the less volatile component is

Front 10

Infinite

Back 10

At minimum reflux ratio, the number of plates is

Front 11

Equal to 1

Back 11

The relative volatility of the mixture at the azeotropic point where the solution exhibits minimum boiling is

Front 12

Relative volatility

Back 12

The ease or difficulty of separating components by distillation is determined by the

Front 13

Mass transfer equipment

Back 13

A debutanizer is a

Front 14

Reflux

Back 14

In distillation, the cooled liquid stream returned to the column to cool a plate or stage is called

Front 15

Constant molal overflow, constant molal vaporization, follows Trouton's rule

Back 15

McCabe-Thiele method to determine the theoretical number of stages may be applied with acceptable result if

Front 16

Distillation

Back 16

The physical separation of components in a miscible mixture by simultaneous evaporation and condensation

Front 17

Completely immiscible in water

Back 17

In batch open steam distillation, the solution to be open steam distilled should be

Front 18

Bottom

Back 18

In a distilling column, the highest pressure will be at

Front 19

Distillation

Back 19

The unit operation by which the lighter components in a multicomponent solution of volatile liquids are separated from heavier component

Front 20

Temperature

Back 20

The relative volatility of most ideal binary solution is slightly affected by

Front 21

Decreases

Back 21

For a non-azeotropic solution being distilled, the temperature in the distillation column, from bottom to top

Front 22

Increase the number of degrees of freedom

Back 22

The primary reason why close steam is used in an open batch steam distillation is to

Front 23

Tiller-Tour Equation

Back 23

The theoretical number of plates for nearly pure products in a stage operations may be estimated using

Front 24

Dew point temperature

Back 24

The temperature at which a vapor-gas mixture becomes saturated when cooled at constant humidity

Front 25

Dry bulb temperature

Back 25

The temperature of a vapor-gas mixture as ordinarily determined by immersion of a thermometer in the mixture

Front 26

Unsaturated

Back 26

If the partial pressure of the vapor in a gas-vapor mixture is less than the equilibrium vapor pressure of the liquid at the same temperature, the mixture is

Front 27

Wet bulb temperature

Back 27

The steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapor-gas mixture

Front 28

Equal to unity

Back 28

The Lewis relation for an air-water vapor system takes a value

Front 29

Above the equilibrium curve

Back 29

In humidification, where the Lewis number is equal to one, the operating line on the gas-enthalpy-liquid temperature graph is

Front 30

Adiabatic Humidification

Back 30

Spray chamber illustrates the principle of

Front 31

Fogging

Back 31

A result of a condition whereby the gas becomes supersaturated with vapor

Front 32

Minimize the effect of radiation on the temperature reading

Back 32

A sling psychrometer is whirled on a fast spin when measuring the wet bulb temperature of ambient air to

Front 33

The mass transfer resistance in the liquid phase is small

Back 33

In an air-water contact equipment, the individual gas-phase MTC is equal to the overall MTC since

Front 34

Wet bulb temperature

Back 34

An indication of the moisture content of ambient air

Front 35

Maximum air flow rate

Back 35

For dehumidification, when the top liquid flow rate is fixed and the top conditions of water temperature and air enthalpy are known, the limiting flow rate is considered to be

Front 36

Dew point, dry, and wet bulb temperature

Back 36

Measured for determination of the humidity of air

Front 37

Dew point

Back 37

Temperature at which the moisture in humid air exerts a partial pressure equal to it's vapor pressure

Front 38

Percentage relative humidity

Back 38

Ratio between partial pressure of water vapor in air and vapor pressure of the water at the air temperature multiplied by 100

Front 39

Dew point

Back 39

The temperature at which water content will start to condense

Front 40

Dehumidification

Back 40

In an air-water contact operation, when the temperature and humidity of the air both decreased, the process is