Parametric Study for Thermal and Catalytic Methane Pyrolysis for Hydrogen Production: Techno-Economic and Scenario Analysis

Seunghyun Cheon, Manhee Byun, Dongjun Lim, Hyunjun Lee and Hankwon Lim
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Seunghyun Cheon: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea
Manhee Byun: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea
Dongjun Lim: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea
Hyunjun Lee: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea
Hankwon Lim: School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Korea

Energies, 2021, vol. 14, issue 19, 1-19

Abstract: As many countries have tried to construct a hydrogen (H 2 ) society to escape the conventional energy paradigm by using fossil fuels, methane pyrolysis (MP) has received a lot of attention owing to its ability to produce H 2 with no CO 2 emission. In this study, a techno-economic analysis including a process simulation, itemized cost estimation, and sensitivity and scenario analysis was conducted for the system of thermal-based and catalyst-based MP (TMP-S1 and CMP-S2), and the system with the additional H 2 production processes of carbon (C) gasification and water–gas shift (WGS) reaction (TMPG-S3 and CMPG-S4). Based on the technical performance expressed by H 2 and C production rate, the ratio of H 2 combusted to supply the heat required and the ratio of reactants for the gasifier (C, Air, and water (H 2 O)), unit H 2 production costs of USD 2.14, 3.66, 3.53, and 3.82 kgH 2 ?1 from TMP-S1, CMP-S2, TMPG-S3, and CMPG-S4, respectively, were obtained at 40% H 2 combusted and a reactants ratio for C-Air-H 2 O of 1:1:2. Moreover, trends of unit H 2 production cost were obtained and key economic parameters of the MP reactor, reactant, and C selling price were represented by sensitivity analysis. In particular, economic competitiveness compared with commercialized H 2 production methods was reported in the scenario analysis for the H 2 production scale and C selling price.

Keywords: thermal methane pyrolysis; catalytic methane pyrolysis; H 2 production; process simulation; economic analysis; unit H 2 production cost (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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