(125d) CFD Validation of Coal Gasification Process for Entrained Flow Gasifiers

Environmental drivers like carbon capture and other emission controls are creating a great opportunity for growth and adoption of clean coal technologies. Gasification is one of the more established and matured clean coal technologies and numerical simulations are playing crucial role in its development. Different models and approaches have been proposed and discussed in the literature.
In the present work, CFD simulations for ConocoPhillips' EGas technology based two stage oxygen blown gasifier; Mitsubishi Heavy Industries (MHI) research scale two stage air blown gasifier and Brigham Young University (BYU) laboratory scale oxygen blown gasifier are performed and validated including volatile break-up approach developed earlier in ANSYS FLUENT 14.5. The reaction rates are computed using the Finite rate/Eddy dissipation reaction model. The Discrete Ordinates radiation model with Weighted Sum of Gray Gas Model (WSGGM) for gas absorption coefficient along with particle radiation interaction is employed in these simulations. The predicted syngas composition and exit temperature are compared with the experimental results. The simulation predictions are within 10% of accuracy compared to the experimental measurements.