Reaction Kinetics, Mechanisms and Catalysis

, Volume 126, Issue 2, pp 921–937 | Cite as

Development of a modified kinetic model for residual oil hydroprocessing

  • Xinyuan Li
  • Zhou Yang
  • Shenghua Yuan
  • Yanbo Weng
  • Xinguo Geng
  • Weikun LaiEmail author
  • Xiaodong Yi
  • Weiping Fang


A basic conversion model for hydrodesulfurization (HDS) is developed according to corresponding reaction process. Further improvement is conducted on the model considering the HDS characteristics and industrial demand. The model can quantitatively describe the effect of operational conditions, deactivation behavior and residual properties on HDS. By comparison with the experimental data, the calculated conversions are all found to have a total average relative deviation of less than 5%, presenting a good fit in relation to the experimental data. Moreover, the model can also accurately predict the performance of hydrodecarbonresidue and hydrodemetallization. Results indicate that the model has a high universality and practicability.


Kinetics Hydrodesulfurization Deactivation Operating conditions Residual oil 



Contention of representative S compound (wt%)

\(C_{{S_{0} }}\)

Initial contention of representative S compound (wt%)


The contents of Catalyst surface active sites (mol/m2)


Adsorbent concentration (mol/m2)

\(C_{{M_{0} }}\)

Initial contention of representative metal compound (mg/kg)

\(C_{{C_{0} }}\)

Initial contention of representative carbon residue compound (wt%)


The contents of hydrogen atom (mol/m2)


Bituminous concentration (wt%)


Gas constant (8.314 J mol−1 K−1)


Activation energy of first step reaction (kJ/mol)


Activation energy of second step reaction (kJ/mol)

\(C_{{H_{2} }}\)

Hydrogen gas concentration (mol/m3)

\(C_{{H_{20} }}\)

Initial hydrogen gas concentration (mol/m3)

\(\alpha_{1}\) and \(\alpha_{2}\)

Average weights


Reaction time (h)


Reaction temperature (°C)


Relative apparent activation energy


Apparent activation energy (kJ/mol)


Active retention factor


Deactivation rate constant of covering


Running time (h or day)


The parameter of deactivation curve shape


The parameter of initial hydrogen concentration


The index of reaction time


The index of reaction time


Pre-exponential factors (related)


The pre-exponential factor when t = 0


Internal diffusion efficient factor


Rate coefficient when \(\eta\) = 1


Rate coefficient


Effective diffusion coefficient




The parameter of internal diffusion resistance


The mesoporous radius of fresh catalyst (nm)


The channel reduction deactivation factor of catalyst


The shape parameter of deactivation curve


Catalyst bed volume (m3)


Hydrogen oil volume ratio (V/V)


Flow of liquid oil into the reactor (ton/h)


Initial concentration of H2


Operation pressure (MPa)


Dissociation adsorption constant of H2



This work is supported by the National Natural Science Foundation of China (21703179, 21773194 and 21473143) and the Fundamental Research Funds for the Central Universities of China (20720170103).

Supplementary material

11144_2019_1556_MOESM1_ESM.docx (266 kb)
Supplementary material 1 (DOCX 266 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.National Engineering Laboratory for Green Chemical Productions of Alcohols-ethers-esters, College of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina
  2. 2.SINOPEC Dalian Research Institute of Petroleum and PetrochemicalsDalianChina

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