汽油吸附脱硫剂的研究与应用

Advances in adsorbents for gasoline desulfurization

日益严格的环保法规对生产低硫和超低硫清洁汽油技术提出了更高的要求。传统的加氢脱硫投资大,成本高。开发成本低、操作条件温和非加氢脱硫技术成为一种趋势。吸附脱硫技术具有操作简单、投资少、适合于深度脱硫和无污染等优点,工业应用前景广阔。综述了活性炭、改性分子筛、金属氧化物和改性黏土等多种吸附剂在制备、吸附机理、改性和脱硫效果等方面的研究和应用,对现有吸附脱硫剂存在的问题进行了讨论,展望了其应用前景。

With the law and regulation of environmental protection becoming increasingly stringent, the requirement for the technology of low sulfur and ultra-low sulfur clean gasoline production is becoming strict. There exists higher investment and operating cost in the conventional hydrodesulphurization technologies. The nonhydrogenation technologies of adsorptive desulfurization is of extensive application prospects due to simple operation, less investment, no pollution and suitable for deep desulfurization. The preparation, mechanism of adsorption, modification, application and effects of desulfurization of several typical absorbent, such as activated carbon, modified molecular sieves, metal oxides, and modified clay, were reviewed. The existing problems of adsorbents were discussed and the prospects of adsorptive desulfurization were outlined.