Pt/SSZ-32催化剂在费托合成油加氢异构化制备柴油中的应用

炼油技术与工程 ›› 2021, Vol. 51 ›› Issue (12): 54-59.

Pt/SSZ-32催化剂在费托合成油加氢异构化制备柴油中的应用

刘林林¹,张明伟¹,李国柱^1,2*

1.天津大学化工学院，天津市 300072； 2.天津大学先进燃料与化学推进剂教育部重点实验室，天津市 300072

出版日期:2021-12-15 发布日期:2021-12-15
通讯作者: 李国柱,副教授。联系电话：022-27892340,E-mail:gzli@tju.edu.cn
作者简介:刘林林，工程师，博士在读，化学工艺专业，主要研究正构烷烃异构化催化剂，吸热燃料方面。联系电话：15222696907,E-mail:spp317@126.com
基金资助:
国家重点研发计划(2016YFB0600305)

Application of Pt/SSZ-32 catalyst in the hydroisomerization of F-T oil to diesel

Liu Linlin¹, Zhang Mingwei¹, Li Guozhu^1,2

1.School of Chemical Engineering and Technology， Tianjin University， Tianjin 300072； 2. Key Laboratory for Advanced Fuel and Chemical Propellant of Ministry of Education，Tianjin University， Tianjin 300072

Online:2021-12-15 Published:2021-12-15

摘要/Abstract

摘要： 以煤基费托合成油为原料，通过Pt/SSZ-32催化剂的择形异构，改变油品的组成结构，生产低温性能较好的煤基柴油组分。讨论了温度对加氢异构反应的影响及产物的结构分布规律，测定了煤基柴油组分的理化性质。结果表明：随反应温度升高，总转化率由260 ℃时的50.61%升高至285 ℃时的90%，总转化率升高；异构烃收率随反应温度升高呈先升高后降低的趋势，当反应温度为275 ℃时，总转化率为84.59%，此时异构烃收率为75.39%，凝点为-20 ℃，比原料降低了41 ℃，此时异构体收率为最佳值；随着总转化率升高，单支链异构体收率先升高后降低，多支链异构体收率升高，单支链异构体为主要的异构产物；产物的密度、运动黏度、馏程和十六烷值随转化率变化不大，凝点随总转化率的升高显著下降。因此，可以通过调节转化率制备得到不同凝点的煤基柴油组分。

关键词: Pt/SSZ-32催化剂, 费托合成油, 加氢异构化, 柴油, 反应温度, 产物结构, 产物性质

Abstract: Through the shape selective isomerization of the Pt/SSZ-32 catalyst, the F-T oil is changed to produce coal based diesel components with better low temperature performance. The effect of temperature on hydroisomerization and the structural distribution of products are discussed, and the physical and chemical properties of coal based diesel components are measured. The results show that the total conversion increases from 50.61% at 260 ℃ to 90% at 285 ℃ with the increase of reaction temperature. The isomer yield first increases and then decreases with the increase of reaction temperature. When the reaction temperature is 275 ℃, the isomer yield is 75.39%, the total conversion is 84.59%, the freezing point is -20 ℃, which is 41 ℃ lower than the raw material. At this time, the yield of isomer is the best. As the total conversion increases, the yield of mono-branched isomers first increase and then decrease, and the yield of multi-branched isomers increase. The mono-branched isomers are the main products. The density, kinematic viscosity, distillation range and cetane number of the product change little, while freezing point of the product drops significantly with the total conversion increases. Thus, the coal based diesel components with different freezing points can be prepared through different conversions.

Key words: Pt/SSZ-32 catalyst, F-T oil, hydroisomerization, diesel, reaction temperature, product structure, product characters

刘林林, 张明伟, 李国柱. Pt/SSZ-32催化剂在费托合成油加氢异构化制备柴油中的应用 [J]. 炼油技术与工程, 2021, 51(12): 54-59.

Liu Linlin, Zhang Mingwei, Li Guozhu. Application of Pt/SSZ-32 catalyst in the hydroisomerization of F-T oil to diesel[J]. Petroleum Refinery Engineering, 2021, 51(12): 54-59.

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