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Methling T, Armbrust N, Haitz T, Speidel M, Poboss N, Braun-Unkhoff M, Dieter H, Kempter-Regel B, Kraaij G, Schliessmann U, Sterr Y, Wörner A, Hirth T, Riedel U, Scheffknecht G. Power generation based on biomass by combined fermentation and gasification--a new concept derived from experiments and modelling. BIORESOURCE TECHNOLOGY 2014; 169:510-517. [PMID: 25086436 DOI: 10.1016/j.biortech.2014.07.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 07/08/2014] [Accepted: 07/09/2014] [Indexed: 06/03/2023]
Abstract
A new concept is proposed for combined fermentation (two-stage high-load fermenter) and gasification (two-stage fluidised bed gasifier with CO2 separation) of sewage sludge and wood, and the subsequent utilisation of the biogenic gases in a hybrid power plant, consisting of a solid oxide fuel cell and a gas turbine. The development and optimisation of the important processes of the new concept (fermentation, gasification, utilisation) are reported in detail. For the gas production, process parameters were experimentally and numerically investigated to achieve high conversion rates of biomass. For the product gas utilisation, important combustion properties (laminar flame speed, ignition delay time) were analysed numerically to evaluate machinery operation (reliability, emissions). Furthermore, the coupling of the processes was numerically analysed and optimised by means of integration of heat and mass flows. The high, simulated electrical efficiency of 42% including the conversion of raw biomass is promising for future power generation by biomass.
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Affiliation(s)
- Torsten Methling
- Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany.
| | - Nina Armbrust
- Institute of Combustion and Power Plant Technology, University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany
| | - Thilo Haitz
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Michael Speidel
- Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
| | - Norman Poboss
- Institute of Combustion and Power Plant Technology, University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany
| | - Marina Braun-Unkhoff
- Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
| | - Heiko Dieter
- Institute of Combustion and Power Plant Technology, University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany
| | - Brigitte Kempter-Regel
- Fraunhofer Institute for Interfacial Engineering and Biotechnology, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Gerard Kraaij
- Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
| | - Ursula Schliessmann
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Yasemin Sterr
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Antje Wörner
- Institute of Technical Thermodynamics, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
| | - Thomas Hirth
- Institute of Interfacial Process Engineering and Plasma Technology, University of Stuttgart, Nobelstrasse 12, 70569 Stuttgart, Germany
| | - Uwe Riedel
- Institute of Combustion Technology, German Aerospace Center (DLR), Pfaffenwaldring 38-40, 70569 Stuttgart, Germany
| | - Günter Scheffknecht
- Institute of Combustion and Power Plant Technology, University of Stuttgart, Pfaffenwaldring 23, 70569 Stuttgart, Germany
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