Numerical simulation of a new dry-feed entrained-flow coal gasifier

In order to study visually the flow and gasification characteristics of a new gasifier which was put forward based on flameless oxidation technology, three-dimensional numerical simulation of the gasifier for high ash melting point pulverized coal was conducted. From the results of the inner velocity, temperature and species concentrations in the gasifier, it can be investigated that temperature field in the gasifier become more even, average temperature increases, the gasification intensity will be boost up accordingly, spatial gasification reactions based on flameless oxidation can be achieved in the gasifier. And peak temperature decreases remarkably in the gasifier, so the material requirements for inner furnace will be reduced. Moreover, the temperature at slag outlet also increases, which benefit to slag-tapping for the gasification of high ash melting point coal.