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Title of article :
Influence of char structure on reactivity and nitric oxide emissions
Author/Authors :
Arenillas، نويسنده , , Ana and Rubiera، نويسنده , , Fernando and Parra، نويسنده , , José B and Pis، نويسنده , , José J، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
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Abstract :
The aim of this study was to investigate the influence of coal rank and operating conditions during coal pyrolysis on the resultant char texture properties, morphology and reactivity. A range of bituminous coals were pyrolysed in a fixed bed reactor at different heating rates. It was found that the higher the heating rate and the lower the coal rank, the more microporous chars were obtained. Isothermal (500 °C) gasification in 20% oxygen in argon of the chars was carried out using a differential thermogravimetric system (DTG). The results of this work indicated that the increase in the availability of char-active surface sites led to an increase in char reactivity, not only for oxygen but also for other reactive gases, in particular NO, diminishing emissions during the combustion process.
Keywords :
Reactivity , Char structure , NO reduction , Texture properties , Coal pyrolysis
Journal title :
Fuel Processing Technology
Serial Year :
Link To Document :