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Modelling-based optimisation of the direct synthesis of dimethyl ether from syngas in a commercial slurry reactor

Papari, S ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1016/S1004-9541(13)60505-4
  3. Publisher: 2013
  4. Abstract:
  5. In the present study, we developed a multi-component one-dimensional mathematical model for simulation and optimisation of a commercial catalytic slurry reactor for the direct synthesis of dimethyl ether (DME) from syngas and CO2, operating in a churn-turbulent regime. DME productivity and CO conversion were optimised by tuning operating conditions, such as superficial gas velocity, catalyst concentration, catalyst mass over molar gas flow rate (W/F), syngas composition, pressure and temperature. Reactor modelling was accomplished utilising mass balance, global kinetic models and heterogeneous hydrodynamics. In the heterogeneous flow regime, gas was distributed into two bubble phases: small and large. Simulation results were validated using data obtained from a pilot plant. The developed model is also applicable for the design of large-scale slurry reactors
  6. Keywords:
  7. Modelling ; Catalyst concentration ; Dimethyl ether synthesis ; Global kinetic models ; Optimisations ; Pressure and temperature ; Slurry bubble column ; Superficial gas velocities ; Two-bubble phases ; Bubble columns ; Carbon dioxide ; Catalysts ; Fischer-Tropsch synthesis ; Mathematical models ; Models ; Optimization ; Pilot plants ; Synthesis gas ; Fuels
  8. Source: Chinese Journal of Chemical Engineering ; Volume 21, Issue 6 , June , 2013 , Pages 611-621 ; 10049541 (ISSN)
  9. URL: http://www.sciencedirect.com/science/article/pii/S1004954113605054