A catalytic distillation process for light gas oil hydrodesulfurization

A light gas oil hydrodesulfurization process via catalytic distillation is developed and compared to a conventional process. By integrating the separation and reaction into a single unit, the catalytic distillation may produce a diesel with low concentration of sulfur compounds at a lower cost than the traditional reaction/separation process. The process proposed in this work is compared to an optimized conventional hydrodesulfurization unit which represents fairly well a plant that belongs to the National System of Refineries. During the optimization of the conventional process, a compromise is established among the production of diesel and naphtha and the operating costs. The results show that the light gas oil hydrodesulfurization via catalytic distillation is as or more efficient than the conventional process. However, the removal of the sulfur compounds is carried out under less rigorous conditions. This design reduces the fix and operational costs.

[1]  Michael F. Doherty,et al.  Reactive distillation by design , 1992 .

[2]  J. Fair.  Design aspects for reactive distillation , 1998 .

[3]  Paul I. Barton,et al.  Dynamic catalytic distillation: Advanced simulation and experimental validation , 1998 .

[4]  V. Agreda,et al.  High-purity methyl acetate via reactive distillation , 1990 .

[5]  Rajamani Krishna,et al.  Modelling reactive distillation , 2000 .

[6]  K. Sundmacher,et al.  Oscillatory vapor-liquid transport phenomena in a packed reactive distillation column for fuel ether production , 1995 .

[7]  Moses O. Tadé,et al.  ETBE Synthesis via Reactive Distillation : 2. Dynamic Simulation and Control Aspects , 1997 .

[8]  Kai Sundmacher,et al.  Multiple reactions in catalytic distillation processes for the production of the fuel oxygenates MTBE and TAME : analysis by rigorous model and experimental validation , 1999 .

[9]  Sanjay M. Mahajani,et al.  Industrial Applications of Reactive Distillation , 2003 .

[10]  Abbas Firoozabadi,et al.  Thermodynamics of Hydrocarbon Reservoirs , 1999 .

[11]  P. Daoutidis,et al.  Dynamics and control of an ethyl acetate reactive distillation column , 2001 .

[12]  James R. Fair,et al.  Design Guidelines for Solid-Catalyzed Reactive Distillation Systems , 1999 .

[13]  M. Landau.  Deep hydrotreating of middle distillates from crude and shale oils , 1997 .

[14]  Rajamani Krishna.  Hardware selection and design aspects for reactive distillation columns , 2003 .

[15]  J. Tapia,et al.  A LINEAR APPROXIMATION METHOD TO EVALUATE ISOTHERMAL EFFECTIVENESS FACTORS , 1999 .

[16]  I. Babich.  Science and technology of novel processes for deep desulfurization of oil refinery streams: a review☆ ☆ , 2003 .

[17]  V. Pinjala,et al.  Consider reactive distillation , 1992 .

[18]  Bruce C. Gates,et al.  Hydrogenolysis and hydrogenation of dibenzothiophene catalyzed by sulfided CoO‐MoO3/γ‐Al2O3: The reaction kinetics , 1981 .

[19]  G. Hutchings,et al.  Hydrodesulfurization of hindered dibenzothiophenes: an overview , 2000 .