Advanced Steam Reforming of Bio-Oil with Carbon Capture: A Techno-Economic and CO 2 Emissions Analysis

Jennifer Reeve, Oliver Grasham, Tariq Mahmud and Valerie Dupont
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Jennifer Reeve: School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
Oliver Grasham: School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
Tariq Mahmud: School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK
Valerie Dupont: School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, UK

Clean Technol., 2022, vol. 4, issue 2, 1-20

Abstract: A techno-economic analysis has been used to evaluate three processes for hydrogen production from advanced steam reforming (SR) of bio-oil, as an alternative route to hydrogen with BECCS: conventional steam reforming (C-SR), C-SR with CO 2 capture (C-SR-CCS), and sorption-enhanced chemical looping (SE-CLSR). The impacts of feed molar steam to carbon ratio (S/C), temperature, pressure, the use of hydrodesulphurisation pretreatment, and plant production capacity were examined in an economic evaluation and direct CO 2 emissions analysis. Bio-oil C-SR-CC or SE-CLSR may be feasible routes to hydrogen production, with potential to provide negative emissions. SE-CLSR can improve process thermal efficiency compared to C-SR-CCS. At the feed molar steam to carbon ratio (S/C) of 2, the levelised cost of hydrogen (USD 3.8 to 4.6 per kg) and cost of carbon avoided are less than those of a C-SR process with amine-based CCS. However, at higher S/C ratios, SE-CLSR does not have a strong economic advantage, and there is a need to better understand the viability of operating SE-CLSR of bio-oil at high temperatures (>850 °C) with a low S/C ratio (e.g., 2), and whether the SE-CLSR cycle can sustain low carbon deposition levels over a long operating period.

Keywords: sorption enhancement; chemical looping; hydrogen; bio-oil; carbon capture; techno-economics (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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