A study of combined biomass gasification and electrolysis for hydrogen production

Research output: Contribution to journalArticle

Abstract

An integrated system for the production of hydrogen by gasification of biomass and electrolysis of water has been designed and cost estimated. The electrolyser provides part of the hydrogen product as well as the oxygen required for the oxygen blown gasifier. The production cost was estimated to 39 SEK/kg H-2 at an annual production rate of 15 000 ton, assuming 10% interest rate and an economic lifetime of 15 years. Employing gasification only to produce the same amount of hydrogen, leads to a cost figure of 37 SEK/kg H-2, and for an electrolyser only a production cost of 41 SEK/kg H-2. The distribution of capital and operating cost is quite different for the three options and a sensitivity analyses was performed for all of these. However, the lowest cost hydrogen produced with either method is at least twice as expensive as hydrogen from natural gas steam reforming. (c) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Chemical Engineering

Keywords

  • Production, Biomass, Electrolysis, Hydrogen, Gasification
Original languageEnglish
Pages (from-to)772-782
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number2
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes