2-6　石炭ガス化炉内のガス化反応・スラグ流シミュレーション

抄録

A numerical simulation of coal gasification coupled with a slag flow on a coal gasifier was performed to demonstrate the capability of the multi-physics and multi-scale modeling and simulation. For the gas-particle two-phase reacting flow simulation for the gasification reaction was based on the large-eddy simulation (LES) with the Eulerian-Lagrangian approach. For the gas-liquid two-phase flow simulation for the molten slag flow was based on the Volume of Fluid (VOF) method. A laboratory-scale coal gasifier was targeted and the numerical results were validated by comparing with the experimental data for the gasification reaction. The molten slag flow on the gasifier inner wall was observed precisely. It was confirmed that the present numerical procedure could predict qualitatively the gas-particle-liquid three-phase reacting flow within the entrained flow coal gasifier.