Lectuse ]
· What is
separation?
· What
properties can we exploit to separate two components ?
· What
would we call the process (unit operation) that would achieve this ?
Two
? Two
gases
liquids ? Two solids?
Separations
·
Exploit a difference in properties of two components in a mixture to separate them
·
What
-
properties can
we
exploit to separate?
any property that vosies between the components
# Temperoture
Temp. offects Molecular properties
#) pressure
only o Very high pressures
#3 size
(moleculas propecty)
,
Shape
# Diffusion Coefficient
(moleculas property depends on T)
#3 satrected
(depends
#J
,
Vapospressure
on
T)
,
Gas
Liquid
Liquid
(depends on T) Gas
(velocity density viscosity)
Solubility
.
# convection
,
,
Separating Two Gases?
· Remember : difference
in
properties
What are the
properties of interest?
scenarios for inspiration
-
-
making pure Of by separating O2 from N2
Gettingcid of CO2 from flue/exhaust
gas ((02 N2)
,
-
-
Removing HaS from ccude natural gas
Making pure As from his