燃料油液相吸附脱硫机理及研究进展

摘要

This paper aims at reviewing the mechanism of liquid-phase adsorptive desulfurization.Physical adsorptive desulfurization technology is poor in selectivity for sulfur compounds and therefore a deep desulfurization is difficult, which accurs through molecular size selection mechanism, or acidsites adsorption mechanism. The emphasis is paid on the π-complexation adsorption mechanism and SM coordination mechanism. The opinions with respect to the future application trend of adsorptive desulfurization is assessed. The advantages of adsorptive desulfurization for fuels are attractive, such as much milder conditions, higher desulfurization efficiency, olefins being not saturated, lower investment, lower operating cost, etc. Consequently, the liquid-phase adsorption desulfurization is becoming a promising method for deep desulfurization.%综述了燃料油液相吸附脱硫机理,分析了分子尺寸选择机理、酸性位吸附机理等液相物理吸附脱硫机理的特点,指出物理吸附脱硫技术对硫化物的选择性较差且较难实现深度脱硫.重点阐述了π络合机理和S-M配位机理及研究现状,并对络合配位吸附脱硫技术存在的问题及发展前景进行了评价和展望.吸附脱硫技术具有操作条件温和、脱硫效果好、烯烃不被饱和、投资和操作费用低等优点,是一种很有发展前途的深度脱硫方法.