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열정산방법을 이용한 사업장폐기물 소각시설의 저위발열량 분석·평가 연구

A study on the evaluation of lower heating value using heat balance method in industrial waste incineration facilities

  • 고영재 (국립환경과학원 환경자원연구부) ;
  • 강준구 (국립환경과학원 환경자원연구부) ;
  • 권영현 (국립환경과학원 환경자원연구부) ;
  • 유하녕 (국립환경과학원 환경자원연구부) ;
  • 권준화 (국립환경과학원 환경자원연구부) ;
  • 장미정 (국립환경과학원 환경자원연구부) ;
  • 전태완 (국립환경과학원 환경자원연구부) ;
  • 신선경 (국립환경과학원 환경자원연구부)
  • Ko, Youngjae (National Institute of Environmental Research of Environmental Research) ;
  • Kang, Jun-Gu (National Institute of Environmental Research of Environmental Research) ;
  • Kwon, Young-Hyun (National Institute of Environmental Research of Environmental Research) ;
  • Yoo, Ha-Nyoung (National Institute of Environmental Research of Environmental Research) ;
  • Kwon, Jun-Hwa (National Institute of Environmental Research of Environmental Research) ;
  • Jang, Mi-Jeong (National Institute of Environmental Research of Environmental Research) ;
  • Jeon, Tae-Wan (National Institute of Environmental Research of Environmental Research) ;
  • Shin, Sun-Kyoung (National Institute of Environmental Research of Environmental Research)
  • 투고 : 2017.09.12
  • 심사 : 2018.01.15
  • 발행 : 2018.02.25

초록

기존 폐기물 저위발열량 측정 분석 방법은 소량의 시료에 대한 발열량계 측정 및 원소분석 결과로 저위발열량 환산식을 적용하여 산정하도록 규정하고 있다. 즉, 기존 저위발열량 산정방법은 폐기물의 불균질성, 지역적 특성, 계절적 특성 등을 충분히 반영하지 못하여 대표성과 객관성 측면에서의 한계를 나타내고 있다. 이러한 문제로 환경부 고시(제2015-251호)에서는 저위발열량의 대표성 확보를 위하여 산정방법을 개정하였으며, "KS B 6205 육상용 보일러의 열정산방식"을 바탕으로 열정산방법을 적용한 사업장폐기물 소각시설에서의 저위발열량 산정방법을 제시하고 있다. 본 연구에서는 현재 운영 중인 사업장폐기물 소각시설을 대상으로 열정산법에 따라 시설별 투입 폐기물의 저위발열량을 분석 평가하였다. 사업장폐기물 소각시설 7 개소 (10 개호기)에 대한 저위발열량 평가 결과 평균 약 3,404.7 kcal/kg로 산정되었으며, 세부 산정 인자에는 실제 시설 운영 데이터를 수집 종합 하여 적용하였다. 본 연구에서 적용한 개정된 저위발열량 산정 방법은 불균질한 성상의 폐기물 특성을 반영할 수 있는 방법으로, 기존 폐기물 발열량 산정방법과 비교하여 보다 객관성을 확보한 방법인 것으로 판단된다. 본 연구의 결과는 추후 세부적인 저위발열량 산정방법 개선 및 산정인자 도출 등을 위한 기초자료로 활용 될 수 있을 것으로 판단된다.

The energy recovery rate estimation method proposed through the Waste Control Act does not take into account the energy used in practice. In addition, the method for measuring a lower heating value, which is the main factor of the energy recovery rate, was carried out through a small sampling amount, and thus the representative value of the waste was not reflected. With the revised estimation method (Notification No. 2015-215 of the Ministry of Environment), the energy recovery rate should be estimated based on the actual amount of energy used, and a heat balance method was proposed as a way to estimate the lower heating value. In this study, the lower heating value was estimated for seven industrial waste incineration facilities according to the revised estimation method. All data used in the estimations were achieved from measurement instruments applied to each of the incinerators and through direct measurements taken by the operators for the purposes of calculation. As a result, the lower heating value was estimated to be about 3,404.7 kcal/kg for the seven industrial waste incineration facilities.

키워드

참고문헌

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