A study on the Dioxin behavior in the process of representative pyrolysis/gasfication/melting plant

대표적인 열분해가스화 용융시설의 공정별 다이옥신 배출거동에 관한 연구

  • Shin, Chan-Ki (National institute of Environmental Research) ;
  • Shin, Dae-Yun (Department of Environmental Bio Engineering, Chosun University)
  • Published : 2007.03.31

Abstract

The incineration process has commonly used for wastes amount reduction and thermal treatments of pollutants as the technologies accumulated. However, the process is getting negative public images owing to matter of hazardous pollutants emission. Specially dioxins became a main issue and is mostly emitted from municipal solid wastes incineration. In this reason, pyrolysis/gasfication/melting process is presented as a alternative of incineration process. The pyrolysis/gasfication/melting process, a novel technology, is middle of verification of commercial plant and development 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 dioxins in three pyrolysis/gasfication/melting plant (S, T, P) of pilot scale. In case of S plant, concentration of dioxins shows high at latter part of cogenerated boiler and stack which are operate on low temperature conditions than a latter parts of pyrolysis and melting furnace which are operate on high temperature condition. Concentration of gas phage dioxins had increased after combusted gas passed cogenerated boiler and this is attributed to react of precursor materials such as chlorobenzene and chlorophenol. Concentration of dioxins in T plant showed lower levels at latter part of cooling equipment which are operate with water spray type on low temperature conditions than a latter parts of gasfied melting furnace which are operate on high temperature condition. Removal efficiency of dioxins at gas treatment equipment was 78.8 %. Concentration of dioxins in P plant was low at latter part of SDA/BF which is operate at low temperature conditions than a latter parts of pyrolysis gasfied chamber which are operate at high temperature condition. Removal efficiency of dioxins of SDA/BF was 85.9 % and therefore, it showed high efficiency at those of stoker type incineration facility. However, concentration of dioxins which emitted at high temperature condition were low in three facilities and satisfied present standard emission level of dioxins. To consider the distribution ratio of dioxins, Particulate phase dioxins at S and P plants showed similar ratio with which shows in current stoker type for middle scale domestic waste incineration facility. It is necessary to continuos monitoring the ratio of distribution of dioxins in T plant in because ratio of gas phage dioxins showed high.

Keywords

References

  1. 2004 전국폐기물 발생 및 처리현황, 환경부. 국립환경과학원, 2005
  2. 중소형 소각시설 다이옥신 및 주요 대기오염물질 배출특성 조사와 구조 및 성능 평가( I ), 국립환경연구원, 2002
  3. 중소형 소각시설 다이옥신 및 주요 대기오염물질 배출특성 조사와 구조 및 성능 평가( II ), 국립환경연구원, 2003
  4. 대기오염공정시험방법, 환경부, 2005
  5. 박현서, '병원폐기물의 열분해 특성 연구', 한국폐기물학회지 Vol. 21, No. 7, 2004, P 706-714
  6. 김기헌, '고분자폐기물 열분해 용융시설의 열적특성 및 PCDDs/PCDFs의 거동연구', 연세대학교 대학원 환경공학과, 2003
  7. 이원준, 'Bag filter의 운전조건에 따른 다이옥신, Chlorinated Benzene류, Chlorinated Phenol류 제거효율의 변화', 한국폐기물학회지 vol. 19, No. 5, 2002, P 586-591
  8. 이원준, '도시쓰레기 소각로에서 발생되는 다이옥신과 Chlorinated benzenes 및 Chlorinated Phenol의 관계', 한국폐기물학회지 Vol. 19, No. 5, 2002, P 577-585
  9. 環境省 大気汚染防止法 및 ダイオキシ ン類對策特別措置法, 2002
  10. 日本 特許廳, ダイオキシン對策技術, 1999
  11. 김삼권, 전성환, 정일록 외, '도시폐기물 소각시설의 방지시설별 다이옥신류 처리효율 조사연구, 한국폐기물학회지 Vol. 17, No. 1, 2000, P 70-82
  12. 폐기물관리법, 환경부, 2005
  13. 최기인, 이동훈, 최동혁, '중형 폐기물 소각시설에 설치된 습식세정탑 유입 및 유출가스에서의 다이옥신 농도변화', 한국폐기물학회지 Vol. 21, No. 5, 2004, P 447-455
  14. USEPA, Municipal Solid Waste in the Unites States:2000 FACTS AND FIGURES, 2001
  15. 이동수, '생활쓰레기의 소각에 따른 다이옥신과 퓨란의 위해성', 대한환경공학회지 Vol. 16, No. 3, P 353-364
  16. 환경관리공단, 2005, 제3회 폐기물처리 기술 워크숍
  17. 환경관리공단, 2004, 폐기물처리기술 워크숍
  18. 김기헌, 신찬기, 이원석 외 6인 '열분 해가스화용융시스템의 구조 및 성능평가에 관한 연구(1), 국립환경과학원, 2005
  19. K. J. Shin and Y. S. Chang, 'Characterization of polychlorinated dibenzo -p-dioxins, dibenzofurans, biphenyls, and heavy metals in fly ash produced from korean municipal solid waste incinerators', Chemosphere, Vol. 38, Issue 11, 1999, P 2655-2666 https://doi.org/10.1016/S0045-6535(98)00473-1
  20. M. Takaoka, P. Liao and N. Takeda, 'The behavior of PCDD/Fs, PCBs, chiorobenzenes and chlorophenols in wet scrubbing system of municipal solid waste incinerator', Chemosphere, Vol. 53, Issue 2, 2003, P 153-161 https://doi.org/10.1016/S0045-6535(03)00437-5
  21. Malcolm P. Stevens, 1999, Polymer Chemistry, Oxford University Press
  22. 신찬기, 김삼권, 정일록 외 6인, 소각시설 구조 및 성능 평가기준(안) 제정에 관한 연구(II), 국립환경연구원, 1999
  23. Jozef M. PAcyna, Knut Breivik, Jorg Munc, Janina Fudala, Atmospheric Environment 37 Supplement (2003) S19-S13
  24. 藤吉 秀昭, 새로운 쓰레기 慮理方式-次世代 給炭機(stoker)とガス化溶融爐,日本工業新聞社 地球環境, Vol. 9, 20030
  25. 藤吉 秀昭, 次世代ガス化溶融爐の經濟性について -導入狀況と今後の課題-, Energy, Vol. 4, 2003
  26. 신찬기, 전종주, 신대윤 외 1명, '활성탄 사용에 따른 습식세정시설에서의 대기오염물질 제거효율 평가', 대한위생학회지 Vol. 18, No. 2. P 87-93
  27. 손지환, 생활폐기물 열분해용융공정에서 다이옥신 등 대기유해물질 거동, 한국외국어대학교 대학원 석사학위논문