氢气是石油炼制和化学工业的重要原料 .传统的大规模制氢 ,大多采用天然气、轻油、煤焦为原料造气 ,再用深冷或吸收吸附法提取氢气 ,工艺复杂 ,投资大 ,能耗高 .中小规模制氢 .一般采用电解水法 ,缺点是电耗大 .近年来 ,也采用变压吸附技术 ( PSA)从石化过程产生的含氢气体中回 Hydrogen is an important raw material for petroleum refining and chemical industry.Traditional large-scale hydrogen production mostly uses natural gas, light oil and coal coke as raw materials to make gas, then uses cryogenic or absorption absorption method to extract hydrogen gas, which has complicated process and large investment, High energy consumption. Small and medium-scale hydrogen production. The general use of electrolytic water method, the disadvantage is the power consumption. In recent years, also using pressure swing adsorption technology (PSA) from the petrochemical process of hydrogen-containing gas back