Assessment of Greenhouse Gas Emissions from Hydrogen Production Processes: Turquoise Hydrogen vs. Steam Methane Reforming

被引:31
作者
Ingale, Gayatri Udaysinh [1 ,2 ]
Kwon, Hyun-Min [2 ]
Jeong, Soohwa [2 ]
Park, Dongho [2 ]
Kim, Whidong [2 ]
Bang, Byeingryeol [2 ]
Lim, Young-Il [3 ]
Kim, Sung Won [4 ]
Kang, Youn-Bae [5 ]
Mun, Jungsoo [6 ]
Jun, Sunwoo [7 ]
Lee, Uendo [1 ,2 ]
机构
[1] Univ Sci & Technol, Green Proc & Energy Syst Engn, Daejeon 34113, South Korea
[2] Korea Inst Ind Technol, Carbon Neutral Technol R&D Dept, Cheonan Si 31056, South Korea
[3] Hankyoung Natl Univ, Ctr Sustainable Proc Engn CoSPE, Dept Chem Engn, Anseong 17579, South Korea
[4] Korea Natl Univ Transportat, Dept Chem & Biol Engn, Chungju Si 27469, South Korea
[5] Pohang Univ Sci & Technol, Grad Inst Ferrous & Energy Mat Technol, Pohang 37673, South Korea
[6] Lotte Engn & Construct Co Ltd, Inst Technol, Seoul 06515, South Korea
[7] Samchully Co Ltd, Carbon Neutral Res Inst, Osan Si 18102, South Korea
基金
新加坡国家研究基金会;
关键词
methane pyrolysis; steam methane reforming (SMR); carbon capture and storage (CCS); turquoise hydrogen; fugitive emissions; biogas; Boudouard reaction; BIOGAS; DECOMPOSITION; CAPTURE; CO2;
D O I
10.3390/en15228679
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Hydrogen has received substantial attention because of its diverse application in the energy sector. Steam methane reforming (SMR) dominates the current hydrogen production and is the least expensive endothermic reaction to produce grey hydrogen. This technology provides the advantages of low cost and high energy efficiency; however, it emits an enormous amount of CO2. Carbon capture storage (CCS) technology helps reduce these emissions by 47% to 53%, producing blue hydrogen. Methane pyrolysis is an alternative to SMR that produces (ideally) CO2-free turquoise hydrogen. In practice, methane pyrolysis reduces CO2 emissions by 71% compared to grey hydrogen and 46% compared to blue hydrogen. While carbon dioxide emissions decrease with CCS, fugitive methane emissions (FMEs) for blue and turquoise hydrogen are higher than those for grey hydrogen because of the increased use of natural gas to power carbon capture. We undertake FMEs of 3.6% of natural gas consumption for individual processes. In this study, we also explore the utilization of biogas as a feedstock and additional Boudouard reactions for efficient utilization of solid carbon from methane pyrolysis and carbon dioxide from biogas. The present study focuses on possible ways to reduce overall emissions from turquoise hydrogen to provide solutions for a sustainable low-CO2 energy source.
引用
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页数:20
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