Title:
Designing an Integrated Thermochemical Biorefinery with a Novel Hydrogen Recycling Concept
Author(s):
Bampaou, M., Panopoulos, K.D., Papadopoulos, A.I., Bezergianni, S., Seferlis, P., Voutetakis, S.
Document(s):
Paper
Poster
Abstract:
Hydrogen is a key component in a hydrotreatment-based biorefinery. This work presents an alternative biorefinery concept integrating renewable hydrogen production by water electrolysis and an electrochemical compressor for hydrogen recovery. The proposed system is simulated in AspenPlusTM and consists of five major subsystems: pyrolysis, hydrotreatment, gas conditioning, electrochemical compression and water electrolysis. The overall system is energetically evaluated and key parameters affecting the overall efficiency are identified. After upgrading, the produced oil fraction contains 34% less oxygen compared to the bio-oil feedstock and 47% of the energy content of the initial biomass feedstock. Also, 32% of hydrogen is consumed during hydrotreating and 19% during gas cleaning, resulting in 49% being available for H2 recirculation using the electrochemical compressor. This results in 38% of the hydrogen needs (in energy value terms) being derived from recirculated H2, and as a consequence, less power is required for producing fresh H2 by water electrolysis.
Keywords:
biorefinery, hydrogen, modelling, recycling, upgrading
Topic:
Biomass Conversion Technologies for Energy Carriers, Chemicals and Materials
Subtopic:
Biorefineries
Event:
27th European Biomass Conference and Exhibition
Session:
3CV.5.14
Pages:
1310 - 1316
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-3CV.5.14
Price:
FREE
