Combustion characteristics of sewage sludge in a fluidized bed / Xiangxin Han in Industrial & engineering chemistry research, Vol. 51 N° 32 (Août 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10565-10570 Titre : Combustion characteristics of sewage sludge in a fluidized bed Type de document : texte imprimé Auteurs : Xiangxin Han, Auteur ; Mengting Niu, Auteur ; Xiumin Jiang, Auteur Année de publication : 2012 Article en page(s) : pp. 10565-10570 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Fluidized bed Fluidization Sewage sludge Combustion Résumé : Combustion experiments of Shidongkou sewage sludge from China were carried out by using a small lab-scale fluidized bed, and the effects of moisture content and feed rate of sewage sludge and the transfer of heavy metals were analyzed. Studied sewage sludge with a moisture content of no more than 40% can stably bum in the fluidized bed without any auxiliary fuel input. Enhancing the bed temperature of the dense phase, strengthening the gas-solid mixing of dense phase, and increasing the feed rate of sludge are very necessary for the ignition of sludge with higher moisture content; however, higher feed rate will give rise to an increase of both the incomplete combustion heat loss and the physical absorbing heat amount of new sludge into the fluidized bed, reducing the bed temperature. Gaseous pollutants from the fluidized bed were discussed under different experimental conditions. At last, it was presented that heavy metals except Zn within sewage sludge are mostly concentrated in bottom ashes and bag filter ashes. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259760 [article] Combustion characteristics of sewage sludge in a fluidized bed [texte imprimé] / Xiangxin Han, Auteur ; Mengting Niu, Auteur ; Xiumin Jiang, Auteur . - 2012 . - pp. 10565-10570. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 32 (Août 2012) . - pp. 10565-10570 Mots-clés : Fluidized bed Fluidization Sewage sludge Combustion Résumé : Combustion experiments of Shidongkou sewage sludge from China were carried out by using a small lab-scale fluidized bed, and the effects of moisture content and feed rate of sewage sludge and the transfer of heavy metals were analyzed. Studied sewage sludge with a moisture content of no more than 40% can stably bum in the fluidized bed without any auxiliary fuel input. Enhancing the bed temperature of the dense phase, strengthening the gas-solid mixing of dense phase, and increasing the feed rate of sludge are very necessary for the ignition of sludge with higher moisture content; however, higher feed rate will give rise to an increase of both the incomplete combustion heat loss and the physical absorbing heat amount of new sludge into the fluidized bed, reducing the bed temperature. Gaseous pollutants from the fluidized bed were discussed under different experimental conditions. At last, it was presented that heavy metals except Zn within sewage sludge are mostly concentrated in bottom ashes and bag filter ashes. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26259760

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