Determination of Phase Equilibria

Determination of Phase Equilibria

Experimental Determination of Phase Equilibria

Experimental Investigations of Different Unit Operations 

An overview on the different experimental facilities is given in the following table:

1. Mixture Data

1.1. Vapor - Liquid Equilibria                                                                                        

Static Apparatus, High Pressure< 250 bar 0 - 200 ºCx, y,T, P
Static Apparatus, High Pressure< 400 bar 25 - 400 °Cx, y, T, P
Computer Driven Static Apparatus < 3 bar  -10 - 90 ºCx, T, P
Computer Driven Static Apparatus < 30 bar  -10 - 160 ºCx, T, P
Computer Driven Dynamic Apparatus < 1 bar  -20 - 220 ºCx, T, P
Flow Apparatus, Determination of Critical Points< 400 bar  25 - 400 °Cx=y, T, P
Headspace Chromatograph< 3 bar  0 - 150 ºCx, y, T
Dynamic Still (NORMAG)< 1 bar  25 - 160 ºCx, y, T, P
Swietoslawski Ebulliometer< 1 bar -20 - 220 ºCx, y, T, P
Scott-Ebulliometer< 1 bar  -20 - 220 °Cx, y, T, P
    

1.2. Activity Coefficents at Infinite Dilution

Gas-Liquid Chromatograph 
0 - 90 ºCBild , T
Dilutor (Determination of Gamma Infinite and Henry Coefficients in Pure Solvents and Mixtures)
0 - 150 ºCBild, T, H12
Scott Type Ebulliometer< 1 bar
-20 - 220 °CBild, x, y, T, P
    

1.3. Azeotropic Composition

Spinning Band Column< 1 bar
25 - 150 ºCyaz, T, P
Spinning Band Column< 3 bar 25 - 150 ºCyaz, T, P
    

1.4. Excess Enthalpy

Computer - Driven Flow Calorimeter < 160 bar 25 - 200 ºCx, T, hE
Setaram Calorimeter 

< 3 bar

-190 - 190 ºCx, T, hE
    

1.5. Liquid - Liquid Equilibria

Analytical Method< 1 bar
0 - 100 ºCx", x"", T,
Liquid-Liquid Countercurrent
Chromatography

25 - 50 ºCx3"/x3"", T
    

1.6. Solid - Liquid Equilibria

Synthetic Method (Visual < 1 bar
-90 - 50 ºCx, Tm

1.7.Multicomponent Adsorption (Gas Phase)

Flow Apparatus
(Break through curve)
< 1 bar 0 - 50 ºC

1.8. Octanol - Water Partition Coefficient

Liquid-Liquid Countercurrent
Chromatography

25 - 50 °C
KOW




1.9 EMF - Measuring

PH / ISE - Meter (Orion 920A), Different Ionensensitive Elektrodes


20 - 60 ºCBild





2. Pure Component and Mixture Properties                                                     





2.1. Pure Component Vapor Pressure

Different Designs

T, Ps




2.2. Liquid Density

Vibrating Tube Densitometer (Paar)1 bar
25 - 50 ºCρ,T,P
Vibrating Tube Densimeter (Prototype from Dr. Stabinger (Graz))< 400 bar
< 250 ºCρ,T,P
Vibrating Tube Densitometer (Paar)
< 1300 bar
-10 - 180 °C
ρ,T,P




2.3. Liquid Viscosity

Ubbelohde Viscosimeter  1 bar -20 - 150ºC
Rotation Viscosimeter

300 bar

400°C




2.4. Caloric Data (Bildhv, hm, htr, Ttr, cPL, cPV, ... )

Setaram Calorimeter 100 bar-190 - 190 ºChm, htr, Ttr,
cPL, cPV
Transitiometer 
also for Corrosive Components
2000 bar  0 - 400 °C

all State- and

Phase Changes

Differential Scanning Calorimeter

3 bar-180 - 550 °C

hm, Δhtr, Tm,

Ttr, cpS, cpL





3. Reaction Kinetics                                                                                                     





Batch Reactors1 bar < 95 ºCK, hRo,
k, EA
Flow Reactors30 bar < 200 °CK, hRo,
k, EA




4. Pilot Plants (Æ 50 mm, height 10 m)                                                                        





Tray and Packed Columns

Reactive Distillation (Katapak S)
1 bar < 240 ºC



(Stand: 09.06.2021)