Effect of the cement raw meal rate value on SNCR deNOx efficiency with NH3 as reducing agent - Details

Author：

Wang, Ya-Li (Wang, Ya-Li.) | Li, Nan (Li, Nan.) | Zhang, Hong-Zhan (Zhang, Hong-Zhan.) | Cui, Su-Ping (Cui, Su-Ping.) (Scholars：崔素萍) | Zhang, Yun-Ning (Zhang, Yun-Ning.)

Indexed by：

EI Scopus

Abstract：

Many　complex　factors　can　affect　the　process　of　SNCR　in　cement　calciner,　and　the　cement　raw　meal　rate　value　is　a　relatively　important　one.　In　the　present　study　the　influence　of　the　cement　raw　meal　rate　value　on　the　SNCR　denitration　efficiency　was　investigated　in　a　tubular　reactor　with　a　space　velocity　of　27000　ml/h　in　the　temperature　range　of　700-1100　°C,　and　the　oxygen　concentration　was　5%　and　both　the　inlet　concentration　of　NO　and　NH3　was　designed　as　1000ppm.　The　results　showed　that　the　denitrification　rate　of　SNCR　decreased　with　the　increase　of　the　lime　saturation　factor　(KH)　of　cement　raw　meal　and　increased　with　the　increase　of　aluminum　rate　(IM)　of　cement　raw　meal　at　700~900　recommended　that　the　cement　raw　meal　with　low　KH,　medium　silica　acid　rate　(SM)　and　high　IM　should　be　used.　In　the　temperature　range　of　900~1100　the　denitrification　efficiency　of　SNCR　increased　with　the　KH　and　decreased　with　the　increase　of　IM.　Based　on　the　experimenyal　results　it　is　suggested　that　the　cement　raw　meal　with　high　KH,　high　SM　and　low　IM　should　be　adopted.　©　2019　Trans　Tech　Publications,　Switzerland.

Keyword：

Cements Denitrification Calcination Efficiency Silica Ammonia Lime Nitrogen removal

Author Community：

[ 1 ] [Wang, Ya-Li]College of Materials, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Li, Nan]College of Materials, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Zhang, Hong-Zhan]College of Materials, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Cui, Su-Ping]College of Materials, Beijing University of Technology, Beijing; 100124, China
[ 5 ] [Zhang, Yun-Ning]College of Materials, Beijing University of Technology, Beijing; 100124, China