高附加值异己烷生产工艺研究  

Study on production process of high value-added isohexane

作　　者：方义[1] 谭振明[1] 曾佑富[1] 朱凌辉[1] 

机构地区：[1]中国石油独山子石化公司研究院,新疆克拉玛依833600

出　　处：《炼油技术与工程》2013年第7期4-7,共4页Petroleum Refinery Engineering

摘　　要：以重整抽余油为原料,经加氢精制脱除烯烃、芳烃后,再经蒸馏切取适宜馏分,可获得纯度不低于95%,且符合质量要求的异己烷产品,研究设计的工艺技术路线具有经济性和可行性。在实验室制备出一种NiO质量分数为30%～35%的高活性镍系催化剂,用于重整抽余油加氢精制,其加氢产品溴指数不大于5.0 mgBr/(100 g),苯质量分数不大于0.001%,加氢产品在理论塔板数为24块的精密蒸馏装置上分馏精密切割,采用多个小瓶,每0.5℃为一个馏分段,收集塔顶馏出产品,得到馏程为60.0～62.5℃的高纯度异己烷。在工业生产装置上分离高纯度窄馏分的异己烷产品是可以实现的,副产异己烷方案用于芳烃抽提车间加工抽余油,可实现挖潜增效。The isohexane product of over 95% purity can be produced by hydrofining of reforming raffinate oil to remove olefins and aromatics followed by distillation to cut appropriate fraction.The process scheme developed is economically feasible.When the reforming raffinate oil is hydrofined with high-activity nickel catalyst with 30% ～ 35% NiO prepared in the laboratory,the bromine number of hydrofined product is no greater than 5.0 mgBr /（100 g）,the maximum benzene content is 0.001%.When the hydrogenated oil is distillated in the distillation unit with 24 theoretical plates to cut the isohexane,the high-purity isohexane of 60 ～ 62.5 ℃ distillation is obtained by utilizing small bottles to collect distillate products per 0.5 ℃ fraction.Separation of high-purity fraction of isohexane products can be realized in the commercial units.The economic benefit of the aromatic extraction workshop can be improved if isohexane by-product production scheme is adopted.

关 键 词：异己烷 加氢精制 精馏 软件模拟 

分 类 号：TE624.4[石油与天然气工程—油气加工工程]