Pollutant Emissions during Co-incineration of Landfill
Material Refuse-Derived Fuel in a Lab-Scale Municipal Solid Waste
Incineration Fluidized Bed Furnace
Peng-Tao Cai
Ming-Xiu Zhan
Han-Cheng Ma
Xu Xu
Tong Chen
Xiao-Dong Li
10.1021/acs.energyfuels.9b03793.s001
https://acs.figshare.com/articles/journal_contribution/Pollutant_Emissions_during_Co-incineration_of_Landfill_Material_Refuse-Derived_Fuel_in_a_Lab-Scale_Municipal_Solid_Waste_Incineration_Fluidized_Bed_Furnace/11608041
Landfill
material refers to the waste that has been buried in landfill sites
for a long time. The combustible components of landfill material can
be made into refuse-derived fuel (RDF) for energy utilization. According
to previous studies, landfill material refuse-derived fuel (LMRDF)
mainly consisted of plastic and rubber with a relatively high calorific
value. In this study, the proximate and ultimate analyses of LMRDF
and municipal solid waste were compared. The kinetic analyses of LMRDF,
RDF, and their mixture with different ratios were also conducted.
Furthermore, the pollutant emissions during co-incineration of LMRDF
in a lab-scale municipal solid waste incineration (MSWI) fluidized
bed furnace were investigated. The effects of the co-incineration
ratio, incineration temperature, and water content of LMRDF on pollutant
emissions were also observed. The emissions of NO<sub><i>x</i></sub>, SO<sub>2</sub>, CO, and HCl varied a lot under different
experimental conditions, while the contents of heavy metal in the
flue gas and fly ash almost remained the same. Additionally, the concentration
of polychlorinated dibenzo-<i>p</i>-dioxins and polychlorinated
dibenzofurans (PCDD/Fs) in the flue gas when 30 wt % dried LMRDF was
co-incinerated at 850 °C was the lowest, with the value of 7.53
± 0.89 ng/m<sup>3</sup> (0.63 ± 0.26 ng of I-TEQ/m<sup>3</sup>). It was supposed that the soil attached on the LMRDF enhanced the
furnace fluidization level, resulting in better combustion of waste.
The good correlation of HCl and PCDD/F concentrations in the flue
gas was found. Most importantly, the concentration of PCDD/Fs in the
fly ash increased with the co-incineration ratio of LMRDF because
more Cu and Cl entered the furnace with the soil impurities. The ratios
of PCDFs/PCDDs in all of the flue gas and fly ash are greater than
1, indicating that <i>de novo</i> synthesis might be the
dominant way to form PCDD/Fs. In summary, the results revealed that
co-incineration of a certain amount of LMRDF in the MSWI fluidized
bed furnace would not largely increase the pollutant emissions.
2020-01-14 20:39:12
LMRDF
I-TEQ
pollutant emissions
MSWI fluidized bed furnace
Landfill Material Refuse-Derived Fuel
Solid Waste Incineration Fluidized Bed Furnace Landfill material
flue gas
fluidized bed furnace
co-incineration ratio
CO
RDF
PCDF
PCDD
landfill material refuse-derived fuel
furnace fluidization level