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CAPE-OPEN at IVC-SEP. Martin P. Breil Co-LaN Annual General Meeting Selwyn College, Cambridge 3-4 April 2008. Mærsk Olie og Gas AS. IVC-SEP. Welltec. Overview. IVC-SEP ThermoSystem A short update on the ThermoSystem CO 2 absorber General theory CAPE-OPEN way Results. Models involved.

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Cape open at ivc sep

CAPE-OPEN at IVC-SEP

Martin P. Breil

Co-LaN Annual General Meeting Selwyn College, Cambridge3-4 April 2008


Ivc sep

Mærsk Olie og Gas AS

IVC-SEP

Welltec


Overview
Overview

  • IVC-SEP ThermoSystem

    • A short update on the ThermoSystem

  • CO2 absorber

    • General theory

    • CAPE-OPEN way

    • Results


Models involved
Models involved

  • ThermoSystem contains

    • CPA,

    • PC-SAFT,

    • SRK and PR

  • CPA and PC-SAFT are associating models (H-bonds)


Model parameters
Model parameters

  • SRK and PR are 3-parameter modelsa0 energy b co-volumec1 correlation (T-dependence on a0)

  • Based on the critical properties (Tc,Pc,w)


Model parameters1
Model parameters

  • CPA is a 5-parameter modela0 energy b co-volumec1 correlation (T-dependence on a0)e asc energyb asc volume factor

    CPA reduces to SRK when no asc.

G.M. Kontogeorgis, M.L. Michelsen, G.K. Folas, S.O. Derawi, N. von Solms, and E.H. Stenby. Ten years with the CPA (Cubic-Plus-Association) equation of state. Part I. Pure compounds and self-associating systems. Ind. Eng. Chem. Res., 45:4855, 2006.

G.M. Kontogeorgis, M.L. Michelsen, G.K. Folas, S.O. Derawi, N. von Solms, and E.H. Stenby. Ten years with the CPA (Cubic-Plus-Association) equation of state. Part II. Cross-associating and multicomponent systems. Ind. Eng. Chem. Res., 45:4869, 2006.






Runs in
Runs in …

  • Aspen

2-phase flashacetic acid 0.40water 0.40benzene 0.20

at T = 130 C and

P = 3.5 bar



Runs in2
Runs in…

  • PRO/II


Conclusions on thermosystem
Conclusions on ThermoSystem

  • Finally compliant with PRO/II (8.0.3).

  • Only contains a PT flash algorithm.

  • Comments to PRO/II

    • It is not possible to produce phase envelopes of CO-packages (but the built-in ones)


Phd course
PhD course

Thermodynamic Models:Fundamentals & Computational Aspects

January 2009

Michael Michelsen and Jørgen Mollerup

  • More on www.ivc-sep.kt.dtu.dk


Co 2 absorber
CO2 absorber

  • Contribute to the development of efficient CO2 capture for coal-fired power plants

  • 1/3 of man-made CO2

    from generation of

    electricity

  • Denmark mainly coal

  • Keep electricity

    infrastructure


Technology
Technology

Absorption of CO2 from coal fired power plants with aqueous solutions of alkanolamines

Chemical reactions

Clean Flue Gas

CO2 + 2 R2NH

<=>

R2NH2+ + R2NCOO–

Flue gas

CO2

Alkanolamine

Simplified flow-sheet for CO2 Capture using Alkanolamines

By courtesy of Jostein Gabrielsen


Absorber
Absorber

Clean flue gas

Height = 4.36 m

Diameter = 15 cm

Amine lean

dll

Flue gasw. CO2

Amine rich




Boundary value problem
Boundary value problem

  • Example

  • Numerical solutionby collocation(Shampine et al.)

Available on the web: Shampine, Muir, and Xu A user-friendly FORTRAN BVP solver


Results
Results

  • Implementation in Aspen

  • COCO


Results from co 2 absorber
Results from CO2 absorber


Temperature profile in tower
Temperature profile in tower

AMP

Full – vapour

Dash - liquid


Conclusion on unit operations
Conclusion on Unit Operations

  • Once the legacy code is provided, it is straightforward to produce a CO-version

  • Unfortunately, the engineers at the power plants do not use CO-compliant PMEs.(They build on in-house simulators)


Acknowledgement
Acknowledgement

  • Members of the Chigp project

    • BP (UK/US),

    • Maersk Oil and Gas (Denmark),

    • Statoil (Norway), and

    • TOTAL (France)

  • Members of the CO2 capture project

    • DONG (Denmark) and

    • Vattenfall (Denmark/Sweden).



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