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KMID : 1171820070220020009
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Journal of Environmental and Sanitary Engineering
2007 Volume.22 No. 2 p.9 ~ p.20
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Emission Behavior of Chlorobenzenes and Chlorophenols in Plasm a Type Pyrolysis/Gasification/Melting Process
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Shin Chan-Ki
Shin Dae-Yewn
Kim Ki-Heon
Son Ji-Whan
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Abstract
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pyrolysis/gasification/melting process is presented as an alternative of incineration process. The pyrolysis/ gasification/melting process, a novel technology, is middle of verification of commercial plant and d evelopment of technologies in Korea. But the survey about the pollutant emission from the process, and background data in these facilities is necessary. So in this survey, it is investigated that the behavior of chlorobenzenes and chlorophenols in plasm a type pyrolysis/gasification/melting plant of pilot scale .We investigated discharging behavior of each phase of chlorobenzenes through each process in the plasma type pyrolysis/gasification/melting process. From this result, it was found that about 99% of particle-phase chlorobenzenes was removed, but on the other hand gas phase chlorobenzenes was increased by about 600% through heat exchanger, flue gas cooling, system and semi dry absorption bag filter(SDA/BF), Also, this investigation presented that di-chlorobenzene(DCB) tri-chlorobenzene(TCB), tetra-chlorobenzene(TeCB), penta-chlorobenzene(PCB), except mono-chlorobenzene(MCB) and hexa-chlorobenzene(HCB) were increased through the flue gas cooling system and the semi dry absorption bag filter(SDA/BF). It was investigated that concentration of particle phase chlorophenols was decreased by about 66% , but on the other hand, concentration of gas-phase chlorophenols was increased by about 170% through heat exchanger, flue gas cooling system, and semi dry absorption bag filter(SDA/BF). Also, it was found that di-chlorophenol(DCP), tri-chlorophenol(TCP), and penta-chlorophenol(PCP) were increased through the flue gas cooling system, and the semi dry absorption bag filter(SDA/BF). It can be considered that small-scale pilot facility and short investigation period might cause the concentration increase through the flue gas cooling system and the semi dry absorption bag filter(SDA/BF). A further study on real-scale pilot facility and accurate investigation may be required.
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KEYWORD
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dioxin precursor, chlorobenzenes, chlorophenols
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