Comparative study on formations of polychlorinated dibenzo-p-dioxin, polychlorinated dibenzofuran and related compounds by pyrolysis of some precursors on unused sand for fluidized bed incinerator and long term used sand.

摘要

The effect of wearing of sand in the furnaces of fluidized bed incinerators (FBIs) on the formation of polychlorinated dibenzo-p-dioxin (PCDD), polychlorinated dibenzofuran (PCDF) and their related compounds from polychlorinated biphenyl (PCB) and 1,2,3-trichlorobenzene (1,2,3-T3CBz) was studied experimentally using a pyrolysis apparatus consisting of an injection unit; a stainless steel tube, in which packed was either unused sand (Virgin sand) or used for two months in FBI (worn-out sand), heated to 650 °C by an electric furnace; and a sampling unit