The experimental test of co-incinerating Chinese raw municipal solid waste(MSW)and coal in a laboratory-scale tubular reactorwas first reported in present study,and the emission of normal gas components and the effects of the S/Cl molar ratio or coal mixingpercentages on polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDDs/Fs)emission were investigated and discussed.Theresults indicated that OCDD was the only PCDD homologues since others like TCDD-HpCDD was hardly detected,while as thecategories of PCDF homologues were comparatively much more general.The amount of PCDD was much larger than that of PCDFin all operating conditions.Since PCDF/PCDD1,the dominant role of the precursor formation was proven in our experimentalconductions.With increasing the coal addition to MSW(from 0 to 16%),PCDD and PCDF were reduced considerably.Coal and MSWmay suppress the PCDD/F emissions effciently(over 95%)during the MSW incineration process.The PCDD/F suppression results ofthe present study could be helpful guidance to the industrial application of Chinese MSW and auxiliary coal co-incineration processes.The PCDD/F stack emission data of two industrial incinerators using co-incineration technology in China seem to have a great positivereduction of PCDDs/Fs.
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