Sustainable Mining and Metallurgy

Starting from the preparation technology of hydrogen, the advantages and disadvantages of hydrogen preparation technologies such as methanol to hydrogen, coal to hydrogen, natural gas to hydrogen, and water electrolysis to hydrogen were analyzed, and the process of hydrogen consumption in polysilicon production process was analyzed. According to the actual data of existing plants, the hydrogen production and consumption in the process of polysilicon production were analyzed. The optimization suggestions were put forward for hydrogen system from the aspects of the shutdown pressure relief of hydrogenation system，the start and stop of reduction furnace and the public auxiliary system leakage，so as to effectively reduce the production cost of polysilicon.