关键词: 氢气, 轻烃, 蒸汽重整, 综合能耗, 碳排放强度, 氢气成本

Abstract: In order to guide the refinery to optimize the selection of raw materials for hydrogen production, a hydrogen production process model was established by using Aspen Plus process simulation software, and the material consumption, comprehensive energy consumption, carbon emission intensity and hydrogen cost of steam reformer using different raw materials were analyzed. The results showed that the unit consumption of raw materials, comprehensive energy consumption and carbon emission intensity of hydrogen plant were 2.75-3.36 t/t, 1 031.24-1 494.25 kgOE/t and 7.75-11.28 t/t respectively, which were positively correlated with the carbon content of raw materials. Besides, the cost of H2 for different hydrogen production raw materials was 11 884-20 597 Yuan/t, the order from high to low was naphtha>>hydrogenator dry gas≈desorption gas of pressure swing adsorption (PSA)≈aromatics unit dry gas>natural gas≈coker dry gas. As carbon prices continued to increase, refineries should not use naphtha as raw material for hydrogen production, and refinery gas (aromatics unit dry gas, hydrogenator dry gas and PSA desorption gas) with lower carbon content had advantages over natural gas and coker dry gas.

Key words: hydrogen, light hydrocarbons, steam reforming, comprehensive energy consumption, carbon emission intensity, hydrogen cost