CO 2 capture for coal power plants W. Adamczyk 1 , R.A. Biaecki 1 , - PowerPoint PPT Presentation

MILD oxy-fuel combustion applied to CO 2 capture for coal power plants W. Adamczyk 1 , R.A. Białecki 1 , L. Czarnowska 1 , M. Ditaranto 2 *, P. Gładysz 1 , N.E.L. Haugen 2 , A. Katelbach- Woźniak 1 , A. Klimanek 1 , Ø. Langørgen 2 , S. Sładek 1 , W. Stanek 1 , A. Szlęk 1 , G. Węcel 1 1 Silesian University of Technology - Instit. of Thermal Technology (PL) 2 SINTEF Energy Research (NO)

Consortium Silesian University of Technology - Instit. of Thermal Technology (Project Leader) SINTEF Energy Research – Thermal Energy Dept. Project Budget Total: 6 278 888 PLN Duration of the Project 01.05.2014- 30.04.2017

Concept of oxy-fuel technology

Application of the MILD combustion • Generate strong internal recirculation of flue gas • Flame becomes homogeneously distributed: flameless • Peak temperatures disappear

Application of the MILD combustion Benefits of the technology:  elimination of external flue gas recirculation  fuel flexibility  increased radiation boiler  better burn out of fuel  lower NO emission  lower O2 excess ratio  More compact boilers

Project strategy: from the particle to the full size boiler

DNS implementation of reactive particles Focus on particle clustering No turbulence model exist for the heterogeneous combustion Effects related to a turbulent fluid can be accounted for by a modified Sherwood number It is shown how the effect of the turbulence can be incorporated into RANS code

New experimental set up for particle combustion kinetic measurement Measurement idea Governing equations Reaction rate determination

Experimental rig

Numerical simulation of 1000 MW MOFC boiler

CFD Results Comparison with conventional oxy-boiler through probability of finding a given temperature in the volume of the combustion chamber

Cycle assessment

Highlighted benefits of MOFC over OFC: - Higher boiler efficiency - Reduced FGR - Reduced O2 demand

Conclusions - Defined strategy for power plant optimization - Fundamental research in oxy-fuel combustion to support power plant optimization - MILD oxy-fuel combustion improves overall efficiency of the plant

Thank you for your attention !