As early as 1980, the Institute of Coal Chemistry started a series research and development work on ash agglomerating fluidized bed gasification process (AFB). On September 5th, 2008, the first demonstration plant of pressurized AFB (i.d. 2.4m, 0.6MPa) coal gasifier was put in operation successfully for 76 hours in a fertilizer factory. During the test run, all facilities were operating smoothly and syngas was put into ammonia production system, symbolizing that the AFB coal gasification technology accessing to large-scale commercial demonstration stage.