COAL GASIFICATION USING HIGH TEMPERATURE PREHEATED GASIFYING AGENT IN A PRESSURIZED SPOUT-FLUID BED

High temperature gasifying agent gasification of coal was performed in a 0.1MW thermal input pressurized spout-fluid.Effects of gasification temperature,pressure,equilibrium ratio,and the ratio of steam to coal on coal gasification behaviors were studied.The experimental results indicated that gasification temperature was the most important factor influenced coal gasification in the spout-fluid bed gasifier.The gasification performance was improved at elevated pressure due to the better fluidization in the reactor.The effects of equilibrium ratio,and the ratio of steam to coal on coal gasification were realized by changing the reaction temperature,and the two parameters had an optimum operating range for a certain coal gasification process.