Evaluation of PCDD/Fs emission from fluidized bed incinerators co-firing MSW with coal in China.
The levels and homologue profile of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) from stack gas of three typical fluidized bed incinerators co-firing municipal solid waste (MSW) with Chinese coal were measured. The PCDD/Fs emission was in the range of 0.0054-0.1961 ng I-TEQ/N m(3). Comparison of PCDD/Fs detection results by HRGC/HRMS and HRGC/LRMS suggested that it was feasible to detect fly ash with high PCDD/Fs concentration by HRGC/LRMS. Several factors on PCDD/Fs emission were discussed. The primary reason for the lower PCDD/Fs emission was the inhibition mechanism of relatively high sulfur in feeding coal on PCDD/Fs formation. The emission results also showed that there was no directly correlation between PCDD/Fs levels and CO, O(2) and HCl concentration in flue gas. It was estimated that about 0.1034 g I-TEQ was annually emitted to atmosphere from the tested three MSW incinerators (total daily treatment capacity is 800 tonnes MSW).
Yan
J H
JH
State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, 310027 Zhejiang, PR China.
Chen
T
T
Li
X D
XD
Zhang
J
J
Lu
S Y
SY
Ni
M J
MJ
Cen
K F
KF
D001572:Benzofurans / Q000737:chemistry*; D002681:China; D002947:Cities; D003031:Coal; D004147:Dioxins / Q000737:chemistry*; D005390:Fires; D011166:Porphyrins / Q000737:chemistry*; D011210:Power Plants; D012989:Soil Pollutants / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*
D001572:Benzofurans; D003031:Coal; D004147:Dioxins; D011166:Porphyrins; D012989:Soil Pollutants; D014873:Water Pollutants; C006969:chlorin; C023614:dibenzofuran; C020887:dibenzo(1,4)dioxin