Title:
Design of an Aqueous Phase Reforming Process Demonstration Unit for the Production of Green Hydrogen from Organics-laden Residual Waters
Author(s):
Arlt, S., Hochgerner, S., Weber, G., Pipitone, G., Zoppi, G, Bensaid, S.
Document(s):
Paper
Poster
Abstract:
Aqueous phase reforming describes the conversion of oxygenated hydrocarbons dissolved in an aqueous phase to hydrogen and carbon dioxide. Since research to date has only focused on bench-scale investigations, a lab-scale unit was built to prove the feasibility of aqueous phase reforming at a larger scale. The unit uses a fixed bed reactor with a Pt/C catalyst and is able to process up to 44 l/h of residual water in a continuous manner. The first experiments were conducted using a 0.5 wt% glycolic acid solution and a 1 wt% organics synthetic aqueous phase mixture designed to resemble residual water obtained from lignin-rich hydrothermal liquefaction. The experiments were conducted at 250 °C and 52 barg. The process demonstration unit was operated successfully with both the glycolic acid solution and the synthetic aqueous phase mixture. During both experiments a product gas flow rate of more 150 Nl/h was achieved. The product gas of both experiments largely consisted of H2 and CO2. While CH4 formation was negligible when using the glycolic acid solution, small amounts were found in the product gas produced from the synthetic aqueous phase mixture. Successful operation of the process demonstration unit proves that an upscaling of the aqueous phase reforming process from bench scale to larger scales is possible and is an important step towards an industrial application of the aqueous phase reforming process.
Keywords:
biorefinery, catalytic conversion, hydrogen, wastewater
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers and Sustainable Biofuels
Subtopic:
Hydrothermal processing
Event:
31st European Biomass Conference and Exhibition
Session:
5CV.1.11
Pages:
1001 - 1003
ISBN:
978-88-89407-23-3
Paper DOI:
10.5071/31stEUBCE2023-5CV.1.11
Price:
FREE
