石油学报(石油加工) ›› 2019, Vol. 35 ›› Issue (2): 296-302.doi: 10.3969/j.issn.1001-8719.2019.02.011

• 研究报告 • 上一篇    下一篇

切割点对长庆减压蜡油氮化物组成和催化裂化性能的影响

刘熠斌1,曲志海2,陈小博1,冯翔1,杨朝合1   

  1. 1. 中国石油大学  重质油国家重点实验室, 山东 青岛 266580;
    2. 珠海宝塔石化有限公司,广东 珠海 519090
  • 收稿日期:2018-02-26 修回日期:2018-04-16 出版日期:2019-03-25 发布日期:2019-05-22
  • 通讯作者: 杨朝合,男,教授,博士,从事石油与天然气加工方面的研究;Tel: 0532-86981718; E-mail: statekeylab@upc.edu.cn E-mail:lyb3028@126.com
  • 作者简介:第一作者:刘熠斌,男,副教授,博士,从事石油与天然气加工方面的研究
  • 基金资助:
    国家自然科学基金项目(21476263)和中央高校基本科研业务费专项资金(18CX02130A)资助

Influence of Changqing Vacuum Gas Oil Cut Points on Nitrogen Compounds Distribution and Its Catalytic Cracking

LIU Yibin1, QU Zhihai2, CHEN Xiaobo1, FENG Xiang1, YANG Chaohe1   

  1. 1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China;
    2. Zhuhai Baota Petrochemical Co. Ltd, Zhuhai 519090, China
  • Received:2018-02-26 Revised:2018-04-16 Online:2019-03-25 Published:2019-05-22

摘要: 通过实沸点蒸馏和分子蒸馏对长庆原油的常压渣油进行减压蒸馏获得不同终馏点的减压蜡油,采用常规分析方法对其进行分析,并通过电喷雾傅里叶变换离子回旋质谱(ESI FT-ICR MS)分析氮化物的组成,然后在固定流化床装置上考察了其催化裂化性能。结果表明,切割点从500 ℃提高到580 ℃,可以增加15百分点的减压蜡油收率,且理化性质和催化裂化性能均未明显变差,液体收率和轻油收率略有降低。电喷雾傅里叶变换离子回旋质谱对氮化物的分析表明,减压蜡油中的碱氮化合物以喹啉系为主,而非碱氮化合物以咔唑系为主,切割点对氮化物的类型并无明显影响。

关键词: 减压深拔, 减压蜡油, 氮化物, 催化裂化

Abstract: Atmospheric residues (AR) from Changqing crude oil were cut into four kinds of vacuum gas oil (VGO) with different final boiling points (FBP) by true boiling point distillation and molecular distillation. Properties of obtained VGOs were analyzed by classical analysis methods. Further analysis of nitrogen compounds was carried out by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS), and the catalytic cracking performance of obtained VGOs was investigated in a fixed fluidized bed reactor. Experimental results show that VGO yield can increase fifteen percent when the FBP increases from 500 to 580 ℃, but the properties and catalytic cracking performance of VGO are not changed much. However, the yields of light oil and liquid product decrease slightly. It has been found that nitrogen compound types in the four VGOs determined by ESI FT-ICR MS have no obvious difference. The basic nitrogen compounds are mainly quinolone derivatives while the non-basic nitrogen compounds are mainly carbazole derivatives.

Key words: deep vacuum distillation, vacuum gas oil, nitrogen compound, catalytic cracking