![Page 1: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/1.jpg)
Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the System (CO2 + H2) at
Temperatures Between (218 and 303) K and at Pressures up to 15 MPa
David Vega-Maza University of Aberdeen
Martin Trusler Niall R McGlashan
Imperial College London
1
![Page 2: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/2.jpg)
2
Scope
Impact of Phase behaviour
Apparatus
VLE results
SVLE results
Conclusions
![Page 3: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/3.jpg)
3
Scope
Post-combustion capture.
Oxy-combustion capture
Pre-combustion capture Natural gas reforming Coal gasification Integrated Gasification Combined Cycle
Ca looping
Chemical looping
Adsorption
• Physical Absorbents • Membranes • Cryogenic Separation
SEPARATION
![Page 4: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/4.jpg)
4
Scope
Pre-combustion CO2 capture offers an attractive route
to decarbonising coal-fired electricity production
Low-temperature physical separation of the CO2 may
offer significant cost savings compared with traditional
amine-based absorption processes
Costain’s Next Generation Capture Technology (NGCT)
concept embodies these ideas in a practical process
![Page 5: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/5.jpg)
5
Scope
![Page 6: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/6.jpg)
6
Impact of Phase behaviour
NGCT process modelling requires precise VLE data for
CO2-rich synthesis gas at low temperatures and high
pressures
Also require SVLE data to determine the lower
operating temperature locus to avoid solids formation
VLE of CO2 + H2 + impurities moderately well known
but much of the data are old and there are some
significant gaps – hence this new study
![Page 7: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/7.jpg)
7
Apparatus
Static apparatus with on-line sampling and GC analysis
Ranges: 193 ≤ T/K ≤ 473 and 0.5 ≤ p/MPa ≤ 20
Absolute calibration with pure gases by means of internal
GSV with sample loops under temperature and pressure
control
Process safety considered carefully
![Page 8: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/8.jpg)
8
Apparatus
Static apparatus with on-line sampling and GC analysis
Ranges: 193 ≤ T/K ≤ 473 and 0.5 ≤ p/MPa ≤ 20
Absolute calibration with pure gases by means of internal
GSV with sample loops under temperature and pressure
control
Process safety considered carefully
![Page 9: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/9.jpg)
9
Apparatus
![Page 10: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/10.jpg)
10
Apparatus
![Page 11: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/11.jpg)
11
Apparatus
193 K < T < 473 K
p < 20 MPa
V = 0.14 dm3
![Page 12: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/12.jpg)
12
VLE results
![Page 13: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/13.jpg)
13
p-x-y diagram on H2 + CO2 system at -55 ⁰C, where x represents the molar composition of H2 in the liquid phase and y represents the molar composition of H2 in the vapour phase. Symbols: y -this work-; x –this work-; Tsang et al. [1] ; Spano et al. [2] 1. C.Y. Tsang, W.B. Streett. Chem. Eng. Sci. 36 (1981) 993-1000 2. J.O. Spano, C.K. Heck, P.L. Barrick. J. Chem. Eng. Data 13 (2)
(1968) 168-171
p-x diagram on H2 + CO2 system at -55 ⁰C, where x represents the molar composition of H2 in the liquid. Symbols: x –this work-; – – Tsang et al. [1] ; – – Spano et al. [2] 1. C.Y. Tsang, W.B. Streett. Chem. Eng. Sci. 36 (1981) 993-1000 2. J.O. Spano, C.K. Heck, P.L. Barrick. J. Chem. Eng. Data 13 (2)
(1968) 168-171
0
40
80
120
160
0 0.2 0.4 0.6 0.8 1
p/ b
ar
x or y
0
40
80
120
160
0 0.01 0.02 0.03 0.04
p/ b
ar
x
VLE results
![Page 14: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/14.jpg)
14
VLE results
![Page 15: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/15.jpg)
15
SVLE results
![Page 16: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/16.jpg)
16
SVLE results
SVLE locus determined from p-T behaviour during
cooling ramps
Allowance for sub-cooling prior to freezing
SVLE locus modelled with EoS for pure solid CO2 +
GERG-2008 EoS for (CO2 + H2) in the gas phase, evaluated
at the experimental temperature and vapour-phase
composition
![Page 17: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/17.jpg)
17
Conclusions
VLE and SVLE data measured for (CO2 + H2)
VLE results in good agreement with the available
Elementary modelling completed; GERG-2008 mixture
model planned for CO2 with impurities
Further measurement on (CO2 + CO), (CO2 + CH4) and
(CO2 + H2 + 100 ppm H2S)
Acknowledgement We are pleased to acknowledge financial support for this work provided by Costain Energy & Process and the Energy Technology Institute
![Page 18: Vapour-Liquid and Solid-Vapour-Liquid Equilibria of the ......Martin Trusler Niall R McGlashan Imperial College London 1 2 Scope Impact of Phase behaviour Apparatus VLE results SVLE](https://reader036.vdocuments.us/reader036/viewer/2022071502/61227f2775ab740fda6cdfc6/html5/thumbnails/18.jpg)
VLE and SVLE of the System (CO2 + H2) at Temperatures Between (218 and 303) K and
at Pressures up to 15 MPa
Thank You David Vega-Maza University of Aberdeen
Martin Trusler Niall R McGlashan
Imperial College London
18