Paper details

Title:

Energy Analysis on the Effect of Biogas Composition in the Sorption Enhanced Steam Reforming (SESR) for Green Hydrogen Production

Author(s):

Capa, A., García, R., Rubiera, F., Pevida, C., Gil, M.V.

Document(s):

Abstract:

Hydrogen is currently mainly obtained by steam reforming (SR) of natural gas, consuming a high amount of energy to produce H2 with low purity and yield. To overcome these issues, Sorption Enhanced Steam Reforming (SESR) is emerging as a novel process that combines SR with in situ CO2 capture to produce high-purity and high-yield H2. In this work, biogas is proposed as a renewable feedstock in SESR, and the process has been simulated in Aspen Plus to perform an energy analysis. Air is used as the regeneration agent and biogas as a fuel in the sorbent regeneration unit (REG) for sorbent recovery, allowing cyclic operation. The flue gas heat recovery system is modeled using CO2 as the energy source for steam production and H2 as the energy source for air preheating. High H2 yield (96.07%) and purity (95.40 vol.%) were obtained from biogas SESR regardless of biogas composition. The Potential Net Efficiency of biogas SESR, including sorbent regeneration, was in the range of 69.98%-76.77% depending on biogas composition.

Keywords:

bioenergy, biogas, CO₂ capture, hydrogen, reforming, dual fluidized bed

Topic:

Bioenergy Integration

Subtopic:

Alternative Renewable Fuels and Hydrogen

Event:

29th European Biomass Conference and Exhibition

Session:

5CV.2.6

Pages:

1366 - 1370

ISBN:

978-88-89407-21-9

Paper DOI:

10.5071/29thEUBCE2021-5CV.2.6

Price:

FREE