CO
Download
1 / 25

CO 2 removal from an IGCC power plant - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

CO 2 removal from an IGCC power plant. Comparison of the CO 2 capture options. Content. Scope of the study The existing separation processes Choice of separation process(es) Integration in the IGCC Conclusion. Scope of the study The existing separation processes

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' CO 2 removal from an IGCC power plant' - colin-gates


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

CO2 removal from an IGCC power plant

Comparison of the CO2capture options


Content
Content

  • Scope of the study

  • The existing separation processes

  • Choice of separation process(es)

  • Integration in the IGCC

  • Conclusion


  • Scope of the study

  • The existing separation processes

  • Choice of separation process(es)

  • Integration in the IGCC

  • Conclusion


Igcc and co 2 abatement options
IGCC and CO2 abatement options

  • Pre combustion capture

  • Post combustion capture in an end of pipe process

  • Post combustion with CO2 working fluid and pure O2 combustion


Heat

Recovery

Dust

Filter

Desulfuration

Coal

Preparation

Gasification

O2

ASU

From Tac

compressor

Electricity

N2

TAV

Saturation

Heat

Recovery

Steam

Generator

Cycle

Steam

Air

TAC

Stack

TAC : Combustion turbine

TAV : Steam turbine

ASU : Air separation unit


  • Scope of the study

  • The existing separation processes

  • Choice of separation process(es)

  • Integration in the IGCC

  • Conclusion


Co 2 capture options
CO2 capture options

  • Chemical absorption

  • Physical absorption

  • Adsorption

  • Membrane


Chemical absorption
Chemical Absorption

  • Primary and secondary amines and Tertiary Amines :

  • Sterically hindered amines :

    AMP, 2-Amino-2-Methyl-1-Propanol

  • Mixed amines


Physical solvents
Physical solvents

  • Selexol Dimethylether of

    Polyethylene Glycol

  • Purisol N Methyl Pyrrolidone

  • Rectisol Methanol


  • Scope of the study

  • The existing separation processes

  • Choice of separation process(es)

  • Integration in the IGCC

  • Conclusion


Choice of solvents
Choice of solvents

  • Chemical solvent AMP 30% wt

  • Hot potassium K2CO3

    Carbonate*

  • Mixed amines MDEA 25% MEA 5% wt

  • Physical solvents METHANOL

    SELEXOL*

    NMP

    *with courtesy of UOP


Synthesis gas composition
Synthesis gas composition

Synthesis gas pressure 24 bars abs.

Flow rate 50 kg/s



Mains results
Mains results

  • Solvents losses

  • Electrical consumptions

  • Steam consumptions






Further work
Further work

  • The calculation of the CO2 separation integration will be performed with an international quality coal with :

    • Methanol

    • Selexol

  • The optimal CO conversion and CO2 removal will be studied

  • The overall electrical efficiency will be calculated


    • Scopeof the study

    • The existing separation processes

    • Choice of separation process(es)

    • Integration in the IGCC

    • Conclusion


    Heat

    Recovery

    Dust

    Filter

    Desulfuration

    Coal

    Preparation

    Gasification

    O2

    ASU

    From Tac

    compressor

    Electricity

    N2

    TAV

    Saturation

    Heat

    Recovery

    Steam

    Generator

    Cycle

    Steam

    Air

    TAC

    Stack


    Heat

    Recovery

    Dust

    Filter

    Desulfuration

    Coal

    Preparation

    Gasification

    Electricity

    TAV

    Heat

    Recovery

    Cycle

    Steam

    Steam

    Generator

    O2

    ASU

    From Tac

    compressor

    steam

    N2

    Shift

    Conversion

    CO2

    Separation

    Saturation

    steam

    Air

    TAC

    Stack


    Results for the methanol process energetical comsumption
    Results for the Methanol process energetical comsumption


    Igcc efficiency and co 2 removal
    IGCC efficiency and CO2 removal

    Physical absorption, methanol

    Based case net efficiency : 43.34 %


    Conclusion
    Conclusion

    • Pre-combustion separation

    • Physical solvents are less demanding in electrical and steam, even with higher frigory needs

    • The overall net efficiency decreases of 8 points for 81 mole percent CO2 separation

    • Further work : Selexol integration Sensibility analysis for reduced separation rate


    ad