摘要
吸附脱硫技术用于脱除二次加工石脑油含硫化合物具有能耗低、高选择性和脱硫性能强等优点。通过共沉淀法制备Cu-Al,Zn-Al,Cu-Zn-Al等一系列复合金属氧化物脱硫剂,分析优选出物化性质最佳的脱硫剂。评价结果表明,双活性组分脱硫剂的脱硫性能优于单活性组分脱硫剂。双活性组分脱硫剂的正交实验结果显示最佳的制备条件:Cu,Zn,Al摩尔比为5∶4∶1,铜盐、锌盐和铝盐3种盐与沉淀剂摩尔比为1∶1.3,反应温度60℃。在最佳制备条件下得到的双组分脱硫剂中引入第3种活性组分Ni,表征结果显示Ni的加入使脱硫剂比表面积显著增大,且具有介孔结构,脱硫剂主要是由CuO,ZnO,NiO的晶型构成,当Ni质量分数为12%时,所得到的脱硫剂脱硫性能最佳。
Adsorption desulfurization technology has the advantages of low energy consumption,high selectivity and strong desulfurization performance for the removal of sulfur compounds in the secondary processing naphtha.A series of composite metal oxide desulfurizers,such as Cu-Al,Zn-Al and Cu-Zn-Al,are prepared by co-precipitation method.The desulfurizer with the best physico-chemical properties is selected.The evaluation results show that the desulfurization performance of desulfurizer consisted of double active compositions is better than that of desulfurizer consisted of single active composition.The orthogonal experiment results show that the optimal preparation conditions are as follows:the molar ratio of Cu,Zn,Al is 5∶4∶1,the molar ratio of copper salt,zinc salt and aluminum salt to precipitant is 1∶1.3,and the reaction temperature is 60℃.When the third active composition Ni is introduced into the double-composition desulfurizer prepared under the optimal conditions,the specific surface area increases significantly,and the desulfurizer has mesoporous structure.The desulfurizer is mainly composed of crystal forms of CuO,ZnO and NiO.When the mass fraction of Ni is 12%,the desulfurization performance is the best.
作者
唐赛
夏广
刘澳
程锴
夏明桂
Tang Sai;Xia Guang;Liu Ao;Cheng Kai;Xia Minggui(College of Chemistry&Chemical Engineering,Wuhan Textile University,Wuhan,Hubei 430200)
出处
《炼油技术与工程》
CAS
2021年第9期44-48,共5页
Petroleum Refinery Engineering
基金
国家自然科学基金青年项目(22002111)。
