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Chemical kinetics mechanism for oxy-fuel combustion of mixtures of hydrogen sulfide and methane

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  • معلومة اضافية
    • Publisher Information:
      Elsevier B.V. 2017-03-02T21:15:28Z 2017-03-02T21:15:28Z 2014-09 2014-08
    • نبذة مختصرة :
      Oxy-fuel combustion of sour gas, a mixture of natural gas (essentially methane (CH[subscript 4])), carbon dioxide (CO[subscript 2]), and hydrogen sulfide (H[subscript 2]S), could enable the utilization of large natural gas resources, especially when combined with enhanced oil recovery. In this work, a detailed chemical reaction mechanism for oxy-fuel combustion of sour gas is presented. To construct the mechanism, a CH[subscript 4] sub-mechanism was chosen based on a comparative validation study for oxy-fuel combustion. This mechanism was combined with a mechanism for H[subscript 2]S oxidation, and the sulfur sub-mechanism was then optimized to give better agreement with relevant experiments. The optimization targets included predictions for the laminar burning velocity, ignition delay time, and pyrolysis of H[subscript 2]S, and H[subscript 2]S oxidation in a flow reactor. The rate parameters of 15 sulfur reactions were varied in the optimization within their respective uncertainties. The optimized combined mechanism was validated against a larger set of experimental data over a wide range of conditions for oxidation of H[subscript 2]S and interactions between carbon and sulfur species. Improved overall agreement was achieved through the optimization and all important trends were captured in the modeling results. The optimized mechanism can be used to make qualitative and some quantitative predictions on the combustion behavior of sour gas. The remaining discrepancies highlight the current uncertainties in sulfur chemistry and underline the need for more accurate direct determination of several important rate constants as well as more validation data.
      Siemens Corporation
    • الموضوع:
      Article; http://purl.org/eprint/type/JournalArticle
    • Availability:
      Open access content. Open access content
      Creative Commons Attribution
      http://creativecommons.org/licenses/by-nc-nd/4.0
    • Note:
      application/pdf
      en_US
    • Other Numbers:
      MYG oai:dspace.mit.edu:1721.1/107167
      00102180
      Bongartz, Dominik, and Ahmed F. Ghoniem. “Chemical Kinetics Mechanism for Oxy-Fuel Combustion of Mixtures of Hydrogen Sulfide and Methane.” Combustion and Flame 162, no. 3 (March 2015): 544–553.
      1141884916
    • Contributing Source:
      MASSACHUSETTS INST OF TECHNOL LIBRS
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1141884916
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