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Refining of Vacuum Residues by Aquathermolysis Reaction

Aquathermolysis 반응에 의한 감압잔사유의 개질

  • Ko, Jin Young (Department Chemical Engineering, Hoseo University) ;
  • Park, Dong Ho (Department Chemical Engineering, Hoseo University) ;
  • Park, Seung-Kyu (Department Chemical Engineering, Hoseo University)
  • 고진영 (호서대학교 화학공학과) ;
  • 박동호 (호서대학교 화학공학과) ;
  • 박승규 (호서대학교 화학공학과)
  • Received : 2017.05.15
  • Accepted : 2017.05.31
  • Published : 2017.08.10

Abstract

In this study, the reforming reaction of vacuum residue (VR) was carried out using aquathermolysis reaction. VR showed a prone to decrease the amount of resins and asphaltenes in the constituents, and to increase saturates and aromatics when reacting with steam at 30 bar and above $300^{\circ}C$ for 24 h. This tendency became more evident when the amount of steam used was excessive than the amount of VR. When the aquathermolysis reaction was performed at $300^{\circ}C$ and 30 bar for 48 h, the VR composition was changed from the initial state (S/A/R/A = 7.3%/43.7%/25.6%/23.5%) to final state (S/A/R/A = 6.8%/57%/12.2%/24.0%), and the contents of the resins decreased by 13% and the aromatic compounds increased by 13%. The viscosity decreased from 880,000 cp to 290,000 cp by 68%. When 10% of decalin, which is easy to provide hydrogen, was added, the viscosity decreased by 68% in 24 h. The VR composition showed a reduction in the contents of resins and asphaltenes from 49% to 17% from the initial state (S/A/R/A = 7.3%/43.7%/25.6%/23.5%) to the final state (S/A/R/A = 4.5%/63.5%/12.5%/20.0%), and the content of aromatics was maximized to 63.5%. The gas layer formed by the aquathermolysis reaction in the reactor chamber was collected and analyzed by GC-MS spectroscopy. As a result, various hydrocarbon compounds such as ethylbenzene, octane and dimethylbenzene were detected.

Acknowledgement

Supported by : ISTK (Korea Research Council for Industrial Science and Technology)

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