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Reaction network and molecular distribution of sulfides in gasoline and diesel of FCC process.
  • +11
  • Xinglong Qin,
  • Lei Ye,
  • Alqubati Murad,
  • Jichang Liu,
  • Qiang Ying,
  • Jian Long,
  • Wenxin Yu,
  • Jinquan Xie,
  • Lixin Hou,
  • Xin Pu,
  • Xin Han,
  • Jigang ZHAO,
  • Hui Sun,
  • Hao Ling
Xinglong Qin
East China University of Science and Technology
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Lei Ye
East China University of Science and Technology
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Alqubati Murad
East China University of Science and Technology
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Jichang Liu
East China University of Science and Technology

Corresponding Author:liujc@ecust.edu.cn

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Qiang Ying
East China University of Science and Technology
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Wenxin Yu
East China University of Science and Technology
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Jinquan Xie
East China University of Science and Technology
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Lixin Hou
East China University of Science and Technology
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Xin Pu
East China University of Science and Technology
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Xin Han
East China University of Science and Technology
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Jigang ZHAO
East China University of Science and Technology
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Hui Sun
East China University of Science and Technology
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Hao Ling
East China University of Science and Technology
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Abstract

In order to guide the accurate control of the sulfides in gasoline and diesel of Fluid Catalytic Cracking (FCC) process, a molecular-level model was established based on the Structure Oriented Lumping (SOL) method. According to the molecular composition characteristics of FCC feed oil, a molecular composition matrix containing 4,148 row vectors was constructed with 24 structural increments. Using MATLAB software, the SOL reaction rules were compiled and a complex reaction network containing of about 110,000 reactions was established. According to the classification rules, the sulfides in gasoline and diesel represented by 32 and 136 structural vectors were divided into mercaptans, thioethers, monocyclic thiophenes, benzothiophenes and dibenzothiophenes, respectively. The conversion law of sulfides in gasoline and diesel was investigated by tracking their generation paths and reaction paths in the reaction network. The effects of the operation conditions on the sulfide contents in gasoline and diesel were calculated quantitatively.