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EUBCE 2024 - Florian VÖLKL - Advantages of Highly Superheated Steam for Hydrogen Generation

Advantages of Highly Superheated Steam for Hydrogen Generation

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Sustainable biomass production and carbon management for industrial applications. Biomethane production and market deployment. Advanced biofuels industrial applications.

Advantages of Highly Superheated Steam for Hydrogen Generation

Short Introductive summary

Biomass has a relative low content of hydrogen. In order to increase the H2 yield in the syngas, usually steam is added to a reactor. At the same time, additional energy is required to cover the reaction heat for highly endothermal reactions. It could be supplied by partial combustion (auto-thermal gasification), what reduces the amount of biomass for hydrogen generation. Another possibility is to add some external energy (allothermal gasification), through reactor walls. In that case, the biomass is not lost, but the reaction temperature is reduced signicantly. Here, another approach was proposed and successfully tested in a pilot facility: the usage of highly superheated steam (up to 1200°C). Steam is introduced directly into the reactor. Sensible heat of such steam supplies “in-situ” the energy required for the allothermal process. So, the steam has multiple roles, as: energy carrier, gasification agent, supplier of H2 molecules and tar solvent. Resulting yield is 100 kgH2 per ton and energy efficiency 70%.

Presenter

Moderator portrait

Florian VÖLKL

HiTES Holding, GERMANY

Presenter's biography

I have been employed by HiTES since May 2021 and am responsible for the balancing (mass, energy) of the entire system, as well as the design of specially specified and designed components. Studies: Renewable energies, B.Eng. Environmental technology, M.Eng.

Biographies and Short introductive summaries are supplied directly by presenters and are published here unedited


Co-authors:

D. Stevanovic, HiTES Holding, Sulzbach-Rosenberg, GERMANY
F. Völkl, HiTES Holding, Sulzbach-Rosenberg, GERMANY
T.D. Philippi, HiTES Holding, Sulzbach-Rosenberg, GERMANY
C.W. Kutter, HiTES Holding, Sulzbach-Rosenberg, GERMANY

Session reference: IDV.3.11