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Design and Analyzing a Flameless Combustion Furnace for an Applicable Industrial Setup

Shadab far, Abtin | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49607 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Mazaheri, Karim
  7. Abstract:
  8. Flameless combustion is among the newest combustion technologies that is used for reducing the pollutants in recent couple of decades. Within this combustion regime, diminution of super hot points throughout the combustion chamber along with decline in production of pollutant gases occur simultaneously. This kind of combustion often is created by applying two processes; first by preheating the fuel and/or oxydizer flows at the inlet to tempratures over the self-ignition level; and second with diluting the whole amount of fuel and oxidizer in the chamber. These two happen by using hot exhaust gas of the same chamber (via feedback) or of the previous section (in multi-section chambers). Because of the high-complexity in solving and also the importance of determining the presice emission rate of nitrogen oxides; numerical analysis of such combustions are higly epensive and time-consuming. In this work, by applying available mixing-chemistry models, the most suitable model for solving such combustions has been determined. That model is evaluated by comparing experimental data of a test chamber with its results for the same chamber, and then is apllied on studying an industrial furnace, available at Sarkhun and Qeshm gas refinery. By appling flameless combustion conditions at this furnace, its effects on tempratures and nitrogen oxides emission rates are measured and considered. As is shown in this work of research, diluting the oydizer at the inlet reduces the nitrogen oxides emission rate by 80 percent in the test chamber and by near 40 percent in the industrial furnace
  9. Keywords:
  10. Exhaust Gases ; Preheating ; Nox Generating Model ; Flamless Combustion ; Furnace Combustion ; Industrial Furnace

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