Title:
Development and Techno-Economic Evaluation of an Optimized Concept for Industrial Bio-SNG Production from Sewage Sludge
Author(s):
Veress, M., Bartik, A., Benedikt, F., Hammerschmid, M., Fuchs, J., Müller, S., Hofbauer, H.
Document(s):
Paper
Poster
Abstract:
Within the scope of this work, a concept for the industrial production of Bio-SNG from sewage sludge based on the dual fluidized bed steam gasification is presented. Backed by the current state-of-the-art knowledge in this area the process chain was implemented in a simulation model in IPSEpro. With the aid of the simulation results, experimental data from the 100 kWth pilot plant at TU Wien and literature values, a techno-economic evaluation was carried out to assess the performance of the presented plant. To ensure a maximal fuel carbon conversion, renewable hydrogen is fed externally to the methanation section of the plant. A global cold gas efficiency of 59.8 % could be obtained for sewage sludge, which is in accordance with typical values for Bio-SNG processes. The economic performance was quantified for different scenarios, which allowed an identification of critical factors, like the costs of external hydrogen. The comparison within a case study showed that with favorable circumstances, such as investment subsidies and/or the right process set-up, the technology is more than able to compete with the energy supply by fossil natural gas.
Keywords:
sewage sludge, allothermal gasification, synthetic natural gas (SNG), dual fluidized bed, techno-economic evaluation
Topic:
Bioenergy Integration
Subtopic:
Alternative renewable fuels
Event:
28th European Biomass Conference and Exhibition
Session:
5AV.3.10
Pages:
901 - 911
ISBN:
978-88-89407-20-2
Paper DOI:
10.5071/28thEUBCE2020-5AV.3.10
Price:
FREE
