Abstract: The gasification and ash-water system of integrated gasification combined cycle (IGCC) power station were introduced in brief. The process flows of the gasification and ash-water system in Banshan IGCC Power Plant were analyzed, the process flow of opposed multi-burner coal-water slurry, the selection of ash-water treatment system, the preference of gasification parameters, the preliminary cleaning procedure and the flushing slag water treatment procedure were the emphases to be discussed in this paper.

Key words: integrated gasification combined cycle (IGCC) technology, gasification system, ash-water system, high efficiency and environment protect, development perspective