正十八烷在Pt/SAPO-11上的加氢裂化性能

石油炼制与化工 ›› 2016, Vol. 47 ›› Issue (3): 54-59.

正十八烷在Pt/SAPO-11上的加氢裂化性能

林绍杰¹,齐学振¹,张海燕¹,计建炳^1,2

1.浙江工业大学化学工程学院 2.浙江省生物燃料利用技术研究重点实验室

收稿日期:2015-08-12 修回日期:2015-10-18 出版日期:2016-03-12 发布日期:2016-02-26
通讯作者: 计建炳 E-mail:zjutjjb@163.com
基金资助:
浙江省自然科学基金;国家自然科学基金

STUDY OF HYDROCRACKING OF n-OCTADECANE OVER Pt/SAPO-11 CATALYST

Received:2015-08-12 Revised:2015-10-18 Online:2016-03-12 Published:2016-02-26

摘要/Abstract

摘要：

随着我国对环保的愈加重视，人们对高品质油品的需求在不断增加。烷烃异构化在提高汽油辛烷值、降低柴油凝点以及改善润滑油性能等方面发挥着重要的作用[1-6]。SAPO-11分子筛由于其独特的一维十元环椭圆型孔道结构(0.63 nm×0.39 nm)和适宜的中强酸性中心[7]，对烷烃的异构化反应有着较高的活性和异构化选择性[8-9]。经由进一步改性[10-13]或与其它分子筛复合[14-16]，SAPO-11已广泛地应用于长链烷烃异构化的研究。但在长链烷烃异构化的过程中总是伴随着裂化反应，很少有研究者报道SAPO-11对长链烷烃的裂化性能，SAPO-11裂化性能的研究将为柴油和润滑油等异构降凝技术的研发、重质油轻质化的研究以及开发SAPO-11催化剂在炼油与化工领域的应用提供依据。

关键词: 正十八烷, 加氢裂化, Pt/SAPO-11

Abstract:

The Pt/SAPO-11 catalyst was prepared by incipient-wetness impregnation method and characterized by X-ray diffraction (XRD), BET and NH3-TPD. The effects of Pt loading，reaction temperature，space velocity，reaction pressure and hydrogen-oil ratio on Pt/SAPO-11 were investigated. The result showed that the Pt/SAPO-11 exhibited better catalytic activity with a appropriate increasing of Pt loading，while raising temperature，decreasing space velocity and increasing pressure were favourable for hydrocracking，but higher hydrogen-oil ratio with easier isomerization resulted in a low oil yield. Under the conditions of 0.7% Pt loaded with SAPO-11，temperature of 380 ℃，pressure of 2.5 MPa，LHSV of 1 h-1，hydrogen-oil ratio of 1 000，oil yield had reached 52.2% and the selectivity of mono-branched isomers was 61.6%，along with middle/light distillates ratio of 1.57.

Key words: n-octadecane, hydrocracking, Pt/SAPO-11

林绍杰齐学振张海燕计建炳. 正十八烷在Pt/SAPO-11上的加氢裂化性能[J]. 石油炼制与化工, 2016, 47(3): 54-59.

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