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RESULTS FROM THE EXTENSIVE TECHNICAL EXPLOITATION IN A BIO-GAS FACILITY FOR THE OPTIMIZATION OF RAW BIO-GAS PRODUCTION FOR THE GAS POWER SUPPLY INTO THE NATURAL GAS GRID

文献类型： 会议论文

第一作者： Ralph Sutter

作者： Ralph Sutter 1 ; Jan Liebetrau 2 ; Michael Nelles 3 ; Frank Scholwin 4 ;

作者机构： 1.R&S ENERGY GmbH, Lange Str. 65, 32756 Detmold, 00495231-999975, sutter@rsenergy.de

2.Deutsches BiomasseForschungsZentrum gGmbH Leipzig Bereich Biogastechnologie

3.Universit?t Rostock, Agrarund Umweltwissenschaftliche Fakult?t, Institut für Umweltingenieurwesen, Lehrstuhl Abfall und Stoffstromwirtschaft

4.Universit?t Rostock, Agrarund Umweltwissenschaftliche Fakult?t, Institut für Umweltingenieurwesen, Lehrstuhl Abfall und Stoffstromwirtschaft Deutsches BiomasseForschungsZentrum gGmbH Leipzig Bereich Biogastechnologie

会议名称： European biomass conference and exhibition

主办单位：

页码： 1725-1729

摘要： The present study indicates that anaerobic mesophilic fermentation of sugar beets, an energy crop, in amixture with ensiled whole crop maize substrate, for high continuous production of methane (CH_4) as a renewableenergy source was investigated. Continuous anaerobic digestion of stillage was performed in an stirred tank reactor(CSTR) at 43 ± 1 ℃ running 286 days. Results showed that maximum specific Gas Production Rate (GPR) of224 l_N/kg_(FM) or 800 l_N/kg_(oTS) and CH4 content were 64 % obtained at stillage mixtures with corn silage and sugar beetsin the feed. During the entire processing of sugar beets the Extensive Technical Exploitation Plant achieved with amixture of 30 % corn and 70 % sugar beets a GPR of an average of ? 889 l_N/kg_(oTS) or 249 l_N/k_(gFM); which lie abovethe values obtained in laboratory tests. The mesophilic biogas digester was operated in a Organic Loading Rate(OLR) of 6 kg_(oTs)/m~3d. The digester worked within the neutral pH range between 7.2 – 7.6 and a degradation rate of96 %. Due to this substrate and the buffering capacity as well, external supplementation of additives was definitelyrequired to provide a stable and efficient operation, as provided using antifoam in this case. The findings of thisongoing long-term fermentation of an extremely acidic biomass substrate show crucial information about how toappropriately maintain the operational and particularly the environmental parameters in an Extensive TechnicalExploitation biogas plant. The produced methane could improve the process energy and economics of a biogasfacility.

分类号： s216

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