Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Contribution of Advanced or Alternative Process to Carbon-Dioxide Emission Reduction in Olefin Production Plant

올레핀(Olefin) 생산 공정에서 발생하는 이산화탄소 배출 저감을 위한 신기술 적용 효과

  • Wee, Jung-Ho (Department of Environmental Engineering, The Catholic University of Korea) ;
  • Choi, Kyoung-Sik (Department of Environmental Research & Analysis Center, Environmental Management Corporation) ;
  • Kim, Jeong-In (Department of Industrial Economics, Chung Ang University) ;
  • Lee, Sang-Hoon (Department of Environmental Engineering, The Catholic University of Korea)
  • 위정호 (가톨릭대학교 환경공학과) ;
  • 최경식 (환경관리공단 환경분석연구센터) ;
  • 김정인 (중앙대학교 산업경제학과) ;
  • 이상훈 (가톨릭대학교 환경공학과)
  • Received : 2008.10.29
  • Accepted : 2009.07.13
  • Published : 2009.08.31
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Abstract

Light olefins are very important hydrocarbons widely used as the raw materials of the most petrochemicals including plastics and medicines. In addition, the nation's olefin production capacity is regarded as one of the key indicators to predict the nation's economic scale and growth. Steam cracking of naphtha (or called "NCC (Naphtha Cracking Center) technology"), the traditional process to produce light olefins, is one of the most consuming energy processes among the chemical industries. Therefore, this process causes tremendous $CO_2$ emission. To reduce the energy consumption and $CO_2$ emission from NCC process, the present paper, firstly, investigates and analyses some alternative technologies which can be potentially substituted for traditional process. Secondly, applying the alternative technologies to NCC process, their effects such as energy savings, $CO_2$ emission reduction and CER (Certified Emission Reduction) were estimated. It is found that the advanced NCC process can reduce approximately 35% of SEC (Specific Energy Consumption) of traditional NCC process. This effect can lead to the reduction of 3.3 million tons of $CO_2$ and the acquisition of the 128 billion won of CER per year. Catalytic cracking of naphtha technology, which is other alternative processes, can save up to approximately 40% of SEC of traditional NCC process. This value equates to the 3.8 million tons of $CO_2$ mitigation and 147 billion won of CER per year.

플라스틱에서부터 의약품에 이르기까지 대부분 일상 제품의 핵심적 기초 원료가 되는 경질올레핀은 한 국가의 경제규모와 성장을 예측할 수 있는 중요한 지표이다. 이러한 경질올레핀을 생산하는 NCC (Naphtha Cracking Center) 기술은 석유 관련 기간산업 중에서 가장 많은 에너지를 소비하는 공정으로 다량의 $CO_2$를 발생 시킨다. 본 연구에서는 다량으로 방출되는 $CO_2$를 감축, 저감시킬 수 있는 새로운 NCC 공정의 기술 수준과 개발 현황 및 기술 적용 가능성을 검토하였으며, 새로운 기술이 적용될 경우 $CO_2$ 저감 효과 및 그에 따른 탄소배출권, 그리고 에너지 절감양 등을 정량적으로 산출 하였다. 그 결과 고급 NCC 기술을 적용하면 기존 NCC 공정의 총 에너지 소비량의 약 35%를 줄일 수 있어 연간 약 330만톤의 $CO_2$ 감축과, 약 1,280억원의 탄소배출권 및 중유 약 152만 kL를 줄일 수 있다. 또한 촉매 접촉 분해 기술을 적용하면 연간 최대 약 380만톤의 $CO_2$를 저감할 수 있고 1,470억원 규모의 탄소배출권 및 약 174만 kL의 중유 소비를 줄 일 수 있다.

Keywords

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