非加氢深度脱除燃料油中硫化物的研究进展

Progress in Deep Desulfurization for Transportation Fuels by Nonhydrogenation

综述了非加氢深度脱除燃料油中硫化物的技术进展,主要包括吸附脱硫技术、萃取脱硫技术和氧化脱硫技术。吸附脱硫技术对硫化物的选择性较差,且很难达到深度脱硫目的;而萃取脱硫的溶剂选择较难,且萃取的硫化物类型较少以及溶剂回收较难,使得萃取脱硫技术难以实现工业化。氧化脱硫技术具有操作条件温和,操作费用低,脱硫率高,不产生二次污染等特点,尤其以钛硅分子筛为催化剂、双氧水为氧化剂对燃料油的氧化脱硫能达到较理想的效果,是近期最有希望实现工业化以及零硫目标的脱硫技术,但氧化剂的类型和催化剂还有待进一步改进。

This paper reviews non-hydrogenation desulfurization technology for sulfide in fuel, and it include adsorptive desulfurization, extraction desulfurization and oxidative deuslfurization. Adsorptive deuslfurization is poor in selectivity for sulfur compounds in transportation fuels and deep remove of sulfur cannot be realized. It is difficult to choose solvent for extraction desulfurization and to recycle the solvent, and sulfur compounds that can be extracted are very few, so extraction desulfurization is very difficult to realize industrialization. Oxidative desulfurization is considered to be the most promising process to reach the ＇zero sulfur＇ objective in the near future, because of low operation cost, high desulfurization efficiency and do not produce secondary pollution, especially, it can achieve ideal goal using TS - 1 as catalyst and H202 as oxidants for oxidative desulfurization of fuel. But the kind of oxidants and catalyst need to be further improved.