1 Ocak 2016 Dergi makalesi Açık Erişim

Olcay, Ali Bahadir; Kahraman, Murat; Atas, Selcuk

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  <dc:creator>Olcay, Ali Bahadir</dc:creator>
  <dc:creator>Kahraman, Murat</dc:creator>
  <dc:creator>Atas, Selcuk</dc:creator>
  <dc:date>2016-01-01</dc:date>
  <dc:description>In a pulverized coal-fired (PCF) thermal power plant (TPP), mixture of coal, air and gas is supplied into the furnace volume via the mill duct system and coal/air distribution should ideally be maintained as homogeneous as possible to ensure an efficient combustion. The phenomenon of coal/air flow in the mill duct system has been so far an important issue in terms of boiler efficiency while this process has not been deeply understood yet. In this study, the flow of coal/air/gas mixtures in the mill duct system of Soma B TPP boiler was investigated to evaluate the performance of the boiler and it was found that boiler efficiency was directly affected by the high unburned carbon ratio especially with particle sizes larger than 500 mu m in the bottom ash particles. Coal/air flow in the mill duct system in the Soma B TPP was numerically modeled to characterize the flow behavior of the coal particles and gas mixture. The model was validated with plant real time operation data obtained from field measurements. Particle distribution between the lower level burner ducts was found to be non-homogenous particularly sizes larger than 230 gm based on the simulation results. The main reasons behind the non-homogenous coal/air distribution were studied according to the validated model and two new mill duct system design alternatives (ND-01 and ND-02) were designed to resolve these issues. Base case and alternative design simulation results were compared with each other and it was realized that more homogenous particle disturbance was obtained in the mill duct system especially for the particle sizes larger than 230 mu m in ND-01 design.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/98775</dc:identifier>
  <dc:identifier>oai:zenodo.org:98775</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY 36(2) 135-146</dc:source>
  <dc:title>NUMERICAL AND EXPERIMENTAL INVESTIGATION OF A PULVERIZED COAL MILL DUCT SYSTEM IN THE SOMA B THERMAL POWER PLANT BY PLANT PERFORMANCE TESTS</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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