钨基分子筛催化剂的制备及其在燃料油氧化脱硫中的应用研究
发布时间：2019-01-02 19:53
【摘要】：氧化脱硫技术是国内外研究较多的燃料油非加氢脱硫技术之一,此技术为深度脱硫技术的一种,通过将燃料油中有机难萃取含硫物通过催化氧化转化为极性更强有机含氧化合物,从而将其从然来哦有种脱除。ZSM系分子筛具有丰富的孔结构,良好的热稳定性和离子交换特性,作为燃料油脱硫催化剂的基础材料在化工行业应用广泛。本文以ZSM-5/MCM-4作为基础催化材料,先用碱液处理,再对复合分子筛进行活性金属负载的方法,制备了钨基分子筛催化剂W03-ZSM-5/MCM-41,先后以噻吩-正辛烷模拟油和FCC汽油为对象,以H202作为氧化剂进行催化氧化脱硫研究;以合开发的催化剂为对象,考察了氧化剂用量、催化剂用量、反应温度、反应时间和等工艺因素与模拟油脱硫效果关系,得到了最佳工艺条件如下:当助剂乙醇5ml,氧化剂用量为3%,反应温度75℃,反应时间125min时,噻吩-正辛烷模拟油的脱硫率最高为84.03%,FCC汽油的最高氧化脱硫率最高为72.28%,。以文中合成的催化剂对FCC汽油进行催化氧化,对实验数据进行动力学研究,获得了催化氧化脱硫的动力学模型。
[Abstract]:Oxidation desulfurization technology is one of the non-hydrodesulfurization technologies for fuel oil, which is one of the deep desulfurization technologies. ZSM molecular sieves have abundant pore structure by converting sulfur compounds from fuel oil to organic oxygenated compounds with stronger polarity by catalytic oxidation. Because of its good thermal stability and ion exchange characteristics, it is widely used in chemical industry as the basic material of fuel oil desulfurization catalyst. In this paper, W _ 03-ZSM-5 / MCM-41 was prepared by using ZSM-5/MCM-4 as the basic catalyst, first treated with alkali solution, and then supported by active metal on the composite molecular sieve, W03-ZSM-5 / MCM-41, and the catalyst W03-ZSM-5 / MCM-41 was prepared. Thiophene-n-octane mimic oil and FCC gasoline were used as targets, and H202 as oxidant for catalytic oxidation desulphurization. The relationship between the amount of oxidant, the amount of catalyst, the reaction temperature, the reaction time and the desulfurization effect of simulated oil was investigated. When the amount of oxidant is 3, the reaction temperature is 75 鈩，
本文编号：2398909
[Abstract]:Oxidation desulfurization technology is one of the non-hydrodesulfurization technologies for fuel oil, which is one of the deep desulfurization technologies. ZSM molecular sieves have abundant pore structure by converting sulfur compounds from fuel oil to organic oxygenated compounds with stronger polarity by catalytic oxidation. Because of its good thermal stability and ion exchange characteristics, it is widely used in chemical industry as the basic material of fuel oil desulfurization catalyst. In this paper, W _ 03-ZSM-5 / MCM-41 was prepared by using ZSM-5/MCM-4 as the basic catalyst, first treated with alkali solution, and then supported by active metal on the composite molecular sieve, W03-ZSM-5 / MCM-41, and the catalyst W03-ZSM-5 / MCM-41 was prepared. Thiophene-n-octane mimic oil and FCC gasoline were used as targets, and H202 as oxidant for catalytic oxidation desulphurization. The relationship between the amount of oxidant, the amount of catalyst, the reaction temperature, the reaction time and the desulfurization effect of simulated oil was investigated. When the amount of oxidant is 3, the reaction temperature is 75 鈩，
本文编号：2398909
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