Combination of a gasification process with a high temperature fuel cell (SOFC) for convert biomass into electricity
Creators
Description
The SOFC, which operates between 700 and 800 deg. C, is appropriate to convert the gas from biomass gasification into electricity. Its high electrical yield (50-60%) could double those of current CHP plants using gasification process. The objective of our work is to prove experimentally the feasibility of coupling SOFC and biomass gasification. This thesis is associated with ValorPac project in partnership with 'Institut des Materiaux' of Nantes, S3D Company, Ecole des Mines of Nantes, Fiaxell and SAS Syngas companies and supported by ARNT and ADEME. During our work, a gasification pilot plant was built according to a patented concept. Its operation with 7 kg.h-1 of wood chips and 10 kg.h-1 of wood pellets was tested successfully. An average composition of 14% CO, 15% H2, 20% CO2, 1% CH4 and 49% N2, was obtained. In parallel, operation of SOFC cells with gases similar to those of biomass gasification has been proved. Results showed that 1 ppmv of H2S was enough to decrease the cell's power by 20% while 100 ppmv of HCl doesn't affect the electrochemical reactions. Our work confirmed the use of BauxalineR to eliminate H2S at high temperature. This material is an industrial byproduct derived from alumina extraction which contains 50% of iron oxides. A content of 200 ppmv H2S was reduced to 8 ppmv for several hours. Treatment capacity was estimated at 70 gS.kg-1 with a breakthrough of 1 ppmv and an operating temperature of 400 deg. C. (author)
Abstract (French)
La pile SOFC, qui fonctionne entre 700 et 800 deg. C, est appropriee pour valoriser du gaz issu de la gazeification de la biomasse en electricite. Son haut rendement electrique (50 a 60%) permettrait de doubler celui des installations de cogeneration par gazeification actuelles. Cette these, sous contrat Cifre entre la societe S3D, l'Institut des Materiaux de Nantes et l'Ecole des Mines de Nantes, est associee au projet ValorPac, soutenu par l'ADEME et regroupant differents partenaires (IMN, Fiaxell, S3D et SAS Syngas). L'objectif est de prouver experimentalement la faisabilite du couplage entre SOFC et gazeification de la biomasse. Les travaux ont abouti a la construction d'une unite pilote de gazeification selon un concept brevete. Les tests ont valide le fonctionnement avec 7 kg.h-1 de plaquettes de bois et 10 kg.h-1 de granules de bois. Une composition moyenne de 14% de CO, 15% d'H2, 20% de CO2, 1% de CH4 et 49% de N2, a ete obtenue. En parallele le fonctionnement des cellules SOFC 2R-CellTM avec des gaz similaires a ceux de la gazeification de la biomasse a ete valide. Les resultats ont montre qu'un ppmv d'H2S suffit a degrader de 20% les performances alors qu'une teneur de 100 ppmv d'HCl n'affecte pas les reactions electrochimiques. Les travaux ont aussi valide l'utilisation de la BauxalineR pour eliminer l'H2S a haute temperature. Il s'agit d'un coproduit industriel issu de l'extraction de l'alumine et fortement charge en oxydes de fer. Il a permis de reduire une teneur en H2S de 200 ppmv a moins de 8 ppmv pendant plusieurs heures. A 400 deg. C et a une percee 1 ppmv la capacite de traitement a ete estimee a 70 gS.kg-1. (auteur)
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Additional details
Additional titles
- Original title (French)
- Association d'un procede de gazeification avec une pile a combustible haute temperature (SOFC) pour la production d'electricite a partir de biomasse
Publishing Information
- Imprint Pagination
- 280 p.
- Report number
- FRNC-TH--13264
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 53094693
- Subject category
- S09: BIOMASS FUELS;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- AGING; CARBON DIOXIDE; CARBON MONOXIDE; COGENERATION; DESULFURIZATION; FEASIBILITY STUDIES; GASIFICATION; HYDROCHLORIC ACID; HYDROGEN; HYDROGEN SULFIDES; PILOT PLANTS; SOLID OXIDE FUEL CELLS; SYNGAS PROCESS; TEMPERATURE DEPENDENCE; WOOD WASTES
- Descriptors DEC
- CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHEMICAL REACTIONS; CHLORINE COMPOUNDS; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; ELEMENTS; FUEL CELLS; FUNCTIONAL MODELS; HALOGEN COMPOUNDS; HIGH-TEMPERATURE FUEL CELLS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MANAGEMENT; NONMETALS; ORGANIC WASTES; OXIDES; OXYGEN COMPOUNDS; POWER GENERATION; PROCESSING; SOLID ELECTROLYTE FUEL CELLS; SOLID WASTES; STEAM GENERATION; SULFIDES; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES
Optional Information
- Notes
- 112 refs.; Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses