• Title/Summary/Keyword: 코크스 건식 소화 설비 공정

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Life Cycle Analysis of Greenhouse Gas Emissions of By-Product Hydrogen Produced from Coke Oven Gas in Steel Mill (제철소 코크스 오븐 가스 부생수소 전과정 온실가스 배출량 분석)

  • YEIM LEE;WOOJAE SHIN;YEJIN YU;HANHO SONG
    • Journal of Hydrogen and New Energy
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    • v.33 no.6
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    • pp.636-642
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    • 2022
  • The "Hydrogen Economic Activation Road map" was announced in 2019, and hydrogen demand is expected to exceed 470,000 tons per year in 2022 and keep increasing. Under this circumstance, it has become important to understand the greenhouse gas (GHG) emissions associated with various hydrogen production pathways. In this study, the evaluation of life cycle GHG emissions regarding the hydrogen produced as by-product from coke oven gas (COG) in steel mill is conducted. To cover the possible range of operations, three literatures were reviewed and their data of inputs and outputs for the process were adopted for calculation. Life cycle inventories and emission factors were mostly referred to GaBi and Intergovernmental Panel on Climate Change (IPCC) guidelines, respectively. When there are multiple products from a single process, the energy allocation method was applied. Based on these sources and the assumptions, the life cycle emission values of COG-based hydrogen were found to be 3.8 to 4.7 kg/CO2-eq./kg-H2.