BGL gasification technology is promising in the nitrogen fertilizer industry.However,the syn-gas containing excessive CH4 produced by the BGL gasification cannot satisfy the demand for the synthetic ammonia process.In this work,a second nozzle was set in the BGL gasifier to eliminate CH4 via seconda-ry combustion.Then,the effect of secondary combustion was analyzed based on the proposed BGL gasifi-er model.It was found that the CH4 concentration was less than 1％and the char conversion was higher than 99％when the gasifying agent of the second nozzle was 25％of that of the first nozzle.The syngas with high H/C used for the synthetic ammonia process can be produced by increasing the steam propor-tion in the first nozzle.
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