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철강 부생가스를 이용한 에틸렌 생산기술 개발에 따른 온실가스 감축량 산정 연구
안진주(Jinjoo An),최지나(Jina Choi) 한국에너지기후변화학회 2019 에너지기후변화학회지 Vol.14 No.1
Fossil fuel depletion and global warming have encouraged to develop new technologies to produce petrochemicals from alternative sources while reducing greenhouse gas (GHG) emission. Moreover, as the quantitative verification of GHG reduction potential of technologies under development is greatly required, much interest has been developed in GHG emission accounting. This work assessed the greenhouse gas (GHG) reduction potential of ethylene production using Lintz-Donawiz converter gas (LDG) from steelmaking industry and hydrogen gas. We developed two scenarios based on the GHG accounting methodology used in GHG emission trading system: reduction potentials on the organizational boundaries of steelmaking and petrochemical industries respectively and comprehensive reduction potential on the national level. Steelmaking company (LDG supplier) is able to reduce carbon dioxide emission to 31% of baseline emission by substituting LDG for natural gas, which has the lower carbon content than the by-product gas, in power generation plant. In petrochemical company (LDG consumer), GHG reduction isn’t achieved since the developed ethylene production process generates more GHG compared to conventional naphtha steam cracking process. However, it is mostly due to the transport of greenhouse gas (i.e., CO₂) in LDG from steelmaking company boundary to petrochemical company boundary. In conclusion, overall GHG reduction potential on the national level is 1,083,519 tCO₂eq which is 8 tCO₂/tEthylene by introducing this ethylene production process.
CO<sub>2</sub> 수소화 기술을 활용한 합성 나프타 생산시스템의 환경성 평가
안진주 ( Jinjoo An ),이광원 ( Kwangwon Lee ),최지나 ( Jina Choi ) 한국전과정평가학회 2020 한국전과정평가학회지 Vol.21 No.1
본 연구는 전과정평가(LCA)를 활용하여 CCU 기술에 기반한 합성 나프타 생산 시스템의 환경영향을 평가하는데 그 목적이 있다. 본 연구에서는 보다 자세한 환경적 주요 이슈 규명을 위하여 Cradle-to-Gate 관점에서 전과정평가 연구를 수행하였으며, 기존 석유화학 공정에서의 나프타 생산 시스템과의 비교를 통해 환경영향 저감 효과를 확인하였다. 또한 CCU 기술에 기반한 합성 나프타 합성 시스템의 단위공정 분석을 통해 개선 방향을 제안하였다. This study aims at evaluating the environmental impacts stemmed from an new synthetic naphtha production system by CO<sub>2</sub> hydrogenation technology, using Life Cycle Assessment (LCA) methodology. In this study, both LCI and LCIA study were conducted with a perspective of cradle-to-gate in order to figure out more detailed environmentally significant issues. For the purpose of making this study easier to be understood, the comparative approach with existing commercial naphtha production system were applied in this study.
이산화탄소 전환 (CCU) 기술의 온실가스 감축 효과 분석 방법
최지나(Jina Choi),안진주(Jinjoo An) 한국에너지기후변화학회 2018 에너지기후변화학회지 Vol.13 No.2
This work reviewed the present status of national greenhouse gas(GHG) reduction management system and the GHG emission & reduction accounting methods for analysis of GHG reduction effect of CCU technology. There is no GHG reduction accounting methodology for CCU technology that can be certified as Korean Offset Credits (KOC) under current Emission Trading Scheme (ETS). Meanwhile, Life Cycle Assessment (LCA) is frequently used methodology for GHG emission reduction analysis of CCU technology. We examined the LCA methodology for evaluating the GHG emission reduction and other environmental impacts of CCU technology and also proposed key issues and necessary policy support for accurate national LCA evaluation system.