화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.25, No.1, 40-45, March, 2019
DOI10.7464/ksct.2019.25.1.040  Export Citation
도시고형폐기물 소각시설의 N2O 배출계수 개발
The Development of N2O Emission Factor at Municipal Solid Waste Incinerator
고재철, 최상현1, †
  • (주)피엠알 청정기술전략연구원, 15073 경기 시흥시 경기과기대로 269
  • 1(주)금강씨엔티, 04788 서울 성동구 왕십리로14길 11
Jae Churl Ko, and Sang Hyun Choi1, †
  • PMR-Institute for Clean Technology Strategy, 269 Gyeonggigwagidea-ro, Siheung City, Gyeonggi 15073, Korea
  • 1Keum Kang CNT, 11 Wangsimni-ro 14-gil, Seongdong-gu, Seoul 04788, Korea
E-mail:
초록
본 연구에서는 도시고형폐기물 소각시설을 대상으로 2018년 8월 27일부터 2018년 10월 22일 동안 총 3회에 걸쳐 도시고형폐기물의 소각에 의해 발생되는 N2O 농도를 24시간 동안 연속적으로 측정하여 발생량과 배출특성을 조사하였으며, 배출가스 중 N2O 농도측정은 비분산 적외선 분석기(NDIR)를 이용하였다. N2O 배출특성을 조사한 결과 도시고형폐기물 소각시설의 N2O 발생량 및 발생농도는 폐기물의 성상 보다는 소각시설의 소각로 온도와 산소농도 같은 운전조건에 따라 상이하게 발생하는 것으로 판단된다. 도시고형폐기물 소각시설의 N2O 일일평균 발생농도는 53.6 ~ 59.5 ppm이며, 전체 평균농도는 55.6 ppm으로 측정되었다. 또한 N2O 농도를 이용하여 계산된 N2O 발생량은 90.41 ~ 108.44 kg day-1이며, 평균 발생량은 98.05 kg day-1로 조사되었다. 이러한 결과를 바탕으로 도시고형폐기물 소각시설의 N2O 배출계수를 산출한 결과 1,066.13 gN2O tonwaste-1로 생활폐기물의 Tier 2 방법으로 산출된 N2O 배출계수에 비해 약 20배 정도 높은 결과를 얻었다. 따라서, 폐기물 종류와 소각량을 이용한 폐기물 소각시설의 N2O 발생량 산출방식은 정확성에 대한 보완이 필요할 것으로 판단된다.
In this study, nitrous oxide (N2O) emission concentration was measured 3 times continuously for 24 hours from August 27, 2018 to October 22, 2018 and non-dispersive infrared (NDIR) spectrometer was used to calculate N2O concentration of exhaust gas from municipal solid waste (MSW) incinerator. As a result of N2O emission characteristics, it is estimated that N2O emission concentration is due to the difference of furnace temperature, oxygen concentration rather than the chemical component of waste. The measured N2O emission concentration of MSW incinerator was obtained in the range of 53.6 ~ 59.5 ppm and the total average concentration was measured 55.6 ppm. Therefore, the amount of N2O emissions calculated from the N2O concentration was 98.05 kg day-1 on average and the amount of N2O distribution in the range of 90.41 ~ 108.44 kg day-1 was obtained. As a result, the N2O emission factor of the MSW incinerator was estimated to be 1,066.13 gN2O tonwaste-1. The estimated N2O emission factor of the MSW incinerator was 20 times higher than calculated emission factor used in the Tier 2 method. Consequently, it is considered that the method of calculating the amount of N2O emission in the MSW incineration facilities using waste type and incineration amount needs to be supplemented to ensure accuracy.
Keywords:Waste incineration;Nitrous oxide;Municipal solid waste;Emission factor
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