Author(s)

C. Lee, N. Y. Lee, S. J. Lee, J. W. Lee

Abstract

The present study optimizes the oxidizer feed nozzles of a coal gasifier by using a computational fluid dynamics (CFD) technique. The CFD model on coal gasification is constructed by combining Reynolds stress averaged Navier–Stokes equation solver, turbulence, discrete phase and gasification reaction kinetic models. With the changes of nozzle size and oxidizer feed distribution of the coal gasifier, coal gasification performances are calculated by the present CFD method. From the CFD calculation results, the optimal design conditions of oxidizer nozzles can be obtained to maximize carbon conversion and cold gas efficiency by up to 97% and 82% respectively.

Keywords

CFD, coal gasification, cold gas efficiency, carbon conversion, oxidizer nozzle, optimal design