Loading...

Kinetic Study of Partial Oxidation of Methane in Non-Catalytic Porous Media

Rahimpour Kalkhoran, Mehrnaz | 2020

520 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 53423 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Fotovat, Farzam; Soltanieh, Mohammad
  7. Abstract:
  8. Partial oxidation of methane (POX) is one of the most common processes to produce synthesis gas. In this study the kinetics of this process is examined and some reduced mechanisms are introduced to model it in this study. The experimental data from Research Institute of Petroleum Industry are used as reference experimental data. Inlets of this reactor are oxygen and methane with equivalence ratio between 2.53 and 2.9. Moreover, the experimental results of previous studies with the air as the oxidant in equivalence ration between 2.4 and 2.6 are used as basis for comparison of simulation results. During the first step, partial oxidation of methane in non-catalytic porous media is simulated by Ansys Chemkin-Pro software as reactor network model of Perfectly Stirred reactor(PSR)+Honeycomb-Monolith. This model well predicts experimental temperature and mole fractions of main species specially the fraction of methane to hydrogen well. After that, various methane oxidation mechanisms are compared in rich fuel conditions by reactor network model. Based on the relative error percent of mechanisms, GRI-3, USC-mech-2 and Konnov are the best mechanisms. So these three mechanisms reduced in the next step. The mechanisms should be reduced by DRGEPSA method and full species sensitivity analysis (FSSA) should be conducted afterward. Besides, the method needs less time in comparison to FSSA method and the reduced mechanisms will have the least number of species and reactions. As a result, the maximum error is 3% while achieving species reduction in GRI-3 from 53 to 23, in Konnov from 119 to 29, in USC-Mech-2 from 111 to 34
  9. Keywords:
  10. Porous Media ; Reaction Kinetics ; Reactor Network ; Partial Oxidation ; Mechanism Reduction ; Methane Partial Oxidation ; Synthesis Gas Production

 Digital Object List

 Bookmark

No TOC