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MACT Application Effect in Petrochemical Industry to Minimize Benzene Fugitive Emission

석유화학산업의 벤젠 비산배출 저감을 위한 MACT 적용효과

  • Kim, HunJang (Environment & Safety Technology Convergence Engineering in Inha University) ;
  • Moon, Jinyoung (Environment & Safety Technology Convergence Engineering in Inha University) ;
  • Hwang, Yongwoo (Environmental Engineering in Inha University) ;
  • Kwak, Inho (Environment & Safety Technology Convergence Engineering in Inha University)
  • 김훈장 (인하대학교 환경안전융합전공) ;
  • 문진영 (인하대학교 환경안전융합전공) ;
  • 황용우 (인하대학교 환경공학과) ;
  • 곽인호 (인하대학교 환경안전융합전공)
  • Received : 2016.06.10
  • Accepted : 2016.07.25
  • Published : 2016.08.31

Abstract

In this study, MACT (Maximum Achievable Control Technology) application effect was evaluated for minimization of benzene fugitive emission in petrochemical industry. Although fugitive emission for benzene in the nation was regulated by the Clean Air Conservation Act from 2015, the US EPA already has introduced MACT standard to minimize its emission with up-to-date technology since 1995. EPA Emission Factor (AP-42) and EPA MACT Standard Guideline were used to assess MACT application effect. As a result, For MACT application it could reduce benzene emission up to 98% (average) comparing with uncontrolled facility, while the national regulation could achieve about 95% (average) reduction which is slightly lower than MACT. However there is no control measure in the national regulation to reduce benzene emission for vessel loading even though MACT standard requires preventive facility such as VRU (Vapor Recovery Unit). For further reduction of benzene emission, it needs to be mandatory for operation of VRU when benzene product is loaded in vessel. These efforts could contribute to achieve the global level for benzene emission management in national petrochemical industry.

본 연구는 석유화학산업 시설에 MACT (Maximum Achievable Control Technology) 적용 시 벤젠 비산배출량 저감 효과를 분석 하였다. 국내에서는 2015년부터 대기환경보전법에 따라 벤젠 비산배출 저감 위한 규제를 시행하였으나, 미국 EPA에서는 이에 앞서 1995년부터 최대달성 가능한 통제기술인 MACT 기준을 적용하여 벤젠 비산 배출을 효과적으로 관리하고 있다. 본 연구를 위하여 벤젠 배출량 산정 방법론은 EPA Emission Factor AP-42 및 EPA MACT Standard Guideline를 활용하였다. 연구 결과 MACT 적용할 경우 Uncontrolled facility에 비하여 벤젠 배출량이 평균 98% 수준으로 저감 가능한 것으로 나타난 반면 National Regulation 경우 MACT 수준에 비하여 다소 낮은 평균 95% 수준의 저감율을 보이는 것으로 분석되었다. 그러나 MACT 기준 경우 벤젠 선박출하 시 유증기 회수설비(Vapor Recovery Unit, VRU) 등을 가동하여 배출 저감토록 요구하고 있음에도 불구하고 National regulation에서는 별도 규제 사항이 없는 실정이다. 추가적인 배출저감 달성을 위해서는 벤젠 선박출하 시 VRU 등 유증기 저감설비 도입의 법제화가 필요하다. 이러한 노력은 국내 석유화학산업의 벤젠 배출관리 능력을 Global 수준으로 향상시키는데 기여할 것으로 기대된다.

Keywords

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