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简要介绍了以煤为原料的中小型合成氨厂的造气、氨合成工段几项工艺指标的控制、调节及影响工艺指标的关键因素.“,”This paper introduces control and regulation of core index in gasification ammonia synthesis process at small and medium size synthesis ammonia companies which using coal as raw material. It also introduces key factors in effecting process indexes.