Abstract: The continuous acid-base treatment method was used to revive the spent adsorbents discharged from the gasoline adsorption desulfurization unit, and a 15 mL fixed bed small-scale test device was used to evaluate its desulfurization performance, and the influence of pH value changes during the revival process on the revival effect was studied. The results show that: continuous acid-base treatment can effectively dissolve non-active components such as Zn2SiO4 in the spent adsorbents and make them re-precipitate and load; as the pH value of the reaction system increases, the particle size of the newly formed active components becomes smaller; when the pH value of the reaction system is 8 or 9, the specific surface area, pore volume, and pore size distribution of the revived agent are close to those of the new adsorbent; when the pH value is 9, the mass concentrations of zinc ions, nickel ions, and aluminum ions in the reaction filtrate are 0.92, 0.79, and 0.51 mg/L, respectively; the desulfurization performance of the revived agent after continuous acid-base treatment is basically on par with the new adsorbent; as the pH value of the reaction system increases, the desulfurization rate of the revived agent basically shows an increasing trend; when the pH value exceeds 9, the increase in the desulfurization rate slows down. Therefore, the optimal pH value for the spent adsorbent revival reaction system is 9.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">pH value, gasoline adsorption desulfurization unit, revival of spent adsorbent, continuous acid-base treatment, pore structure, phase structure, metal ions, desulfurization rate

摘要： 采用酸碱连续处理法对汽油吸附脱硫装置外排废吸附剂进行复活，利用15mL固定床小试装置评价了其脱硫性能，研究了复活过程中pH值变化对复活效果的影响。结果表明：酸碱连续处理可以有效溶解废吸附剂中Zn2SiO4等非活性组分，并使其重新沉淀负载；随着反应体系pH值的升高，新生成的活性组分粒径更小；当反应体系pH值为8或9时，复活剂比表面积、孔体积及孔径分布与新吸附剂较为接近；当pH值为9时，反应滤液中锌离子、镍离子和铝离子质量浓度分别为0.92、0.79、0.51 mg/L；经过酸碱连续处理的复活剂的脱硫性能基本与新吸附剂持平；随着反应体系pH值的升高，复活剂脱硫率基本呈升高趋势；当pH值超过9时，脱硫率增幅减缓。因此，废吸附剂复活反应体系最佳pH值为9。

关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">pH值, 汽油吸附脱硫装置, 废吸附剂复活, 酸碱连续处理, 孔结构, 相结构, 金属离子, 脱硫率