Title of article
TheoreticalanalysisofmasstransferandreactioninaporousmediumappliedtothegasificationofgraphitebywatervaporOriginalResearchArticle
Author/Authors
LuoXiaowei، نويسنده , , RobinJean-Charles، نويسنده , , YuSuyuan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
10
From page
938
To page
947
Abstract
Thetheoriesofmasstransferandreactioninporousmediumwereappliedtoinvestigatethegasificationofgraphitebywatervaporinreactor.Basedonseverallogicalassumptions,thegasificationofgraphitebywatervaporwasinvestigated.Differentshapesofgraphitewereanalysed:semi-infiniteblocks,planksandcylinders.Analysisrevealsthatthereactionratevarieswiththelocation,whichcanexplaintheintensegasificationthatoccursatupstreamduringexperiments.Thetemperaturedependenceofthereactionrateexpresseddifferentranges.Atlowtemperatures,thereactionratesdependgreatlyonthereactiontemperature,andtheinfluenceofshapeismorepronounced.Athightemperatures,thedependenceweakensduetothelimitofgastransfer,andtheinfluenceofshapedisappears.Thewatervaporpressureatexteriorsurfacedecreaseswithtemperature,butthepressuregradients(bothinsideandoutsideofporousmedia)increaseswithtemperature.Fortheplatelikeandcylindricalporousmedia,thereactionratedecreaseswiththethicknessorradiusbecauseoftheincreaseinspecificsurface.Whenthepenetratingdepthofwatervaporislargerthanthehalf-thicknessorradiusofporousmedia,thewatervaporwouldcumulateinporousmediasothatthepressureofreactinggasincreases.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2006
Journal title
Nuclear Engineering and Design Eslah
Record number
896047
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