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HERO ID
3418493
Reference Type
Journal Article
Title
Combined effects of FeCl3 and CaO conditioning on SO2, HCl and heavy metals emissions during the DDSS incineration
Author(s)
Liu, J; Zeng, J; Sun, S; Huang, S; Kuo, J; Chen, N
Year
2016
Is Peer Reviewed?
Yes
Journal
Chemical Engineering Journal
ISSN:
1385-8947
Volume
299
Page Numbers
449-458
DOI
10.1016/j.cej.2016.04.132
Web of Science Id
WOS:000377832500050
Abstract
Batch incineration tests of sludge before and after conditioning were conducted in atmospheric conditions to investigate the emissions of SO2, HCl and heavy metals using a simulated laboratory tubular furnace reactor. The results show that when the temperature increased from 600 degrees C to 900 degrees C, the emissions of SO2 and HCl increased before sludge conditioning. After conditioning with FeCl3/CaO, the SO2 emissions was reduced and the conversion of Cl to HCI decreased, but HCI emissions increased. When the temperature was above 900 degrees C, the conditioner had a weak effect on fixing the S and Cl emission. After conditioning with FeCl3/CaO, Pb, Zn, and Cu concentrations in the bottom ash decreased, the volatility of Cu and Cr improved. Chlorine exhibited larger effects on the volatilization of heavy metals than did CaO. The consistency between the above experimental results and the model predictions based on a thermodynamic equilibrium analysis was confirmed. (C) 2016 Elsevier B.V. All rights reserved.
Keywords
FeCl3/CaO; Deep dewatered sewage sludge (DDSS); Combustion; HCl; SO2; Heavy metal
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