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Conference contributions | 2013

Suitable gasification methods and gas cleaning schemes for BtL application of producer gas

Rauch, R. New processes for fuel conversion, gas cleaning and CO2 separation in FB and EF gasification of coal, biomass and waste, Workshop ” Suitable gasification methods and gas cleaning schemes for BtL application of producer gas” (held during the First International Workshop on New processes for fuel conversion, gas cleaning and CO2 separation in FB and EF gasification of coal, biomass and waste) 12th-14th of June, Prague, Czech, 2013.

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Conference contributions | 2013

Synthetic biofuels – do they have a future?

Rauch R. Synthetic biofuels – do they have a future? 8th A3PS Conference Eco-Mobility 2013, 4th of October 2013, Vienna, Austria.

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Contributions to trade journals | 2013

The mechanism of bed material coating in dual fluidized bed biomass steam gasification plants and its impact on plant optimization

Kirnbauer F, Hofbauer H. The mechanism of bed material coating in dual fluidized bed biomass steam gasification plants and its impact on plant optimization. Powder Technol. 2013;245:94-104.

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The bed material and especially its catalytic activity plays an important role in biomass steam gasification in dual fluidized bed gasifiers. The bed material is modified by interaction with biomass ash during operation of the gasification plant forming layers at the particles which are induced by the biomass ash. Optimization of dual fluidized biomass steam gasification will have significant influence on the process variables such as temperatures, inorganic composition and product gas composition. The influence of these changes on layer formation is still unknown. This paper summarizes results of investigations about bed material characteristics taken from the industrial-scale biomass steam gasification plant in Güssing where woody biomass is used as fuel. Analyses of the surface and the crystal structures of the bed material particles treated in gasification and combustion atmospheres were carried out. The thermal behavior of used olivine and fresh olivine in different atmospheres was analyzed. A suggestion for the mechanism of formation of the layers is presented and the influence of possible optimization measures is discussed. A change in the elemental composition of the surface was not detectable but a slight change in the crystal structure. Thermal investigations show a weak endothermic weight loss with used olivine in a CO2-rich atmosphere which could not be determined with fresh olivine. The formation of layers at the olivine particles is considered to be caused by the intensive contact with burning char particles in the combustion reactor. © 2013 Elsevier B.V.


Other Presentations | 2013

Two-Stage Anaerobic Digestion of Sugar Beet Pressed Pulp - Optimizing of reactor performance

Stoyanova E et al. Two-Stage Anaerobic Digestion of Sugar Beet Pressed Pulp - Optimizing of reactor performance, 13th World Congress on Anaerobic Digestion 2013, 25th-28th of June 2013, Santiago de Compostela, Spain. (peer reviewed) (visual presentation)

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Other Presentations | 2013

Untersuchung verschiedener Zugverhältnisse auf die Praxisrelevanz der Prüfung von Scheitholzöfen nach EN 13240

Stressler, H. Untersuchung verschiedener Zugverhältnisse auf die Praxisrelevanz der Prüfung von Scheitholzöfen nach EN 13240, Bachelor Thesis, FH Oberösterreich, Wels, Österreich, 2013.

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Other Presentations | 2013

Untersuchung von Wirbelschichtbettmateralien mittels einer Kinetikapparatur

Yildiz, B. Determination of effects of different bed materials on steam reforming for tar reduction, Master Thesis, Vienna University of Technology, Vienna, Austria, 2013.

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Conference contributions | 2014

"BioCAT – Clean air technology for small-scale combustion systems"

Reichert G, Wöhler M, Schwabl M, Schmidl C, Aigenbauer S, Bachmaier H, Figl F, Hartmann H, Haslinger W, Kirchhof J, Stressler H, Sturmlechner R, Turowski P, Voglauer B. BioCAT – Clean air technology for small-scale combustion systems, 4. Central European Biomass Conference 2014, 15th-18th of January 2014, Graz, Austria. (oral presentation)

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Conference contributions | 2014

Active condensation in a 10MW heating plant - measurement results from the first heating season

Hebenstreit B, Höftberger E, Schwabl M, Lundgren J, Toffolo A. Active condensation in a 10MW heating plant - measurement results from the first heating season, 4th Central European Biomass Conference 2014, 15th-18th of January 2014, Graz, Austria.

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Conference contributions | 2014

Advanced Biofuels Technologies – R&D in Austria

Bacovsky D, Wörgetter M. Advanced Biofuels Technologies – R&D in Austria, Fuels of the Future 2014, 20th-21st of January 2014, Berlin, Germany.

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Conference contributions | 2014

Air quality management and biomass burning at domestic level

Aigenbauer S, Bachmaier H, Figl F, Hartmann H, Haslinger W et al. Air quality management and biomass burning at domestic level, Progetto Fuoco 2014, 19th-23rd of February 2014, Verona, Italy.

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Contributions at other events | 2014

Analysis of Environmental and Economic Aspects of International Pellet Supply Chains

Ehrig, R. Analysis of Environmental and Economic Aspects of International Pellet Supply Chains, Ph.D. Thesis, Vienna University of Technology, Vienna, Austria, 2014.

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Biomass plays a key role to achieve the EU's 20-20-20 energy and climate targets. Because of rising European demand and limited domestic resources, the EU relies on worldwide imports. Given this framework, the present thesis explores the inuences on wood pellet supply chains considering dierent environmental policies, price risks and the eect of torrefaction pretreatment. The examinations refer to three real case studies for pellet trade from Australia, Canada, and Russia to Europe. In the rst investigation, the eciency of co-ring imported wood pellets in terms of CO2 savings and related subsidy schemes is analysed. Scenarios show that co-ring biomass is ecient to contribute to the EU energy targets. Though, policy makers could use these instruments more eective when directing sourcing decision towards options with even less environmental impacts. The second analysis explores the inuence of statistically derived price risks on total supply chain economics. It is shown that price risks can eect strong uctuations in the short term, which seriously aect the protability of individual trade routes. Securing the supply chain is mainly based on individual producer-buyer agreements, personal branch experiences and fast reactions on the subsidy system. Systematic evaluation of supply chains could contribute to a more reliable market and thus foster investment decisions. In the last investigation, the economic and environmental performance of potential torrefaction-based supply chains is assessed. As a result, torrefaction-based supply
chains turn out to be a certain alternative to conventional ones. Though, still huge research eorts and industrial demonstration are required to make torreed biomass a real alternative on the market.

 


Contributions to trade journals | 2014

Analysis of woody biomass commodity price volatility in Austria

Kristöfel C, Strasser C, Morawetz UB, Schmidt J, Schmid E. Analysis of woody biomass commodity price volatility in Austria. Biomass Bioenergy. 2014;65:112-124.

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Several energy and agricultural commodities have experienced higher price volatility in recent years. Management of price risks usually leads to additional costs that are often shared and transmitted along the supply chain to the final consumers. Only little information is currently available on how price volatility of woody biomass commodities has developed compared to energy and agricultural commodities in recent years. We compute the historic price volatility of woody biomass commodities using the standard deviation of log returns as well as univariate GARCH models. The results show that the price volatility of several woody biomass commodities has increased in recent years. However, the price volatility of woody biomass is still lower compared to the price volatility of agricultural commodities and fossil fuels. The analysis of factors and linkages provides insights of the current biomass market developments.


Conference contributions | 2014

Applicability survey of different torrefied biomass fuels in small scale appliances

Feldmeier S, Schwabl M, Wopienka E, Strasser C, Haslinger W. Applicability survey of different torrefied biomass fuels in small scale appliances, 22nd European Biomass Conference 2014, 23rd-26th of June 2014, Hamburg, Germany. p 662-666.

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The torrefaction process is a promising key technology for biomass treatment. An improvement of the fuel properties, e.g. a higher gross calorific value and a resulting increased energy density, is expected. The changed fuel properties in terms of water repellence enable an improved storability. However, the modified fuel characteristics change the combustion behaviour of the fuel. Since small­scale pellet boilers mainly are dedicated to wood pellets, the applicability of torrefied fuel yet remains unclear. Within the EU FP7 project SECTOR, amongst others, the end­use application of torrefied biomass was investigated in several small scale appliances and the behaviour during the stationary operational conditions of the combustion process was assessed. The experimental design was divided in two parts: First, a survey of the combustion appliances was conducted in order to observe the influence of the changed fuel properties on the different boiler systems. Afterwards, the combustion behaviour of torrefied pellets made of different raw material quality was monitored by utilizing the test fuels and monitor the emission release. The results of these experimental series provide an initial indication for the feasibility of the utilization of several torrefied fuels in state­of­the­art pellet boilers.


Conference contributions | 2014

Application of a Model Based Control Strategy at a Fixed Bed Biomass District Heating Plant

Zemann C, Heinreichsberger O, Gölles M, Brunner T, Dourdoumas N, Obernberger I. Application of a Model Based Control Strategy at a Fixed Bed Biomass District Heating Plant. 22nd European Biomass Conference and Exhibition Proceedings. 2014;1698-1705.

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Conference contributions | 2014

Ash melting behaviour of solid biofuels in residential pellet boilers

Schwabl M, Feldmeier S, Wopienka E, Haslinger W, Dahl J, Jensen TB, Hartmann H, Schön C, Boman C, Boström D. Pellets Workshop “Ash melting behaviour of solid biofuels in residential pellet boilers” (held held during the Central European Biomass Conference 2014), 15th-18th of January, Graz, Austria, 2014.

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Conference contributions | 2014

Bi-directional networks in district heating systems: Results of the heat flow simulaiton

Lichtenegger K, Wöss D, Halmdienst C, Schnetzinger R, Höftberger E. Bidirectional Networks BiNe, Workshop “ Bi-directional networks in district heating systems: Results of the heat flow simulation” (held during the Central European Biomass Conference 2014), 15th-18th of January, Graz, Austria, 2014.

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Conference contributions | 2014

Bilanzierung und Optimierung des Zweibett-Wirbelschicht-Dampfvergasers Oberwart mit IPSEpro

Wilk V, Bosch K, Hofbauer H. Bilanzierung und Optimierung des Zweibett-Wirbelschicht-Dampfvergasers Oberwart mit IPSEpro, Fachtagung Prozesssimulation in der Energietechnik 2014, 10th of September 2014, Leipzig, Germany.

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Peer-reviewed publications | 2014

Biodiesel Production in Africa

Walimwipi H, Yamba FD, Wörgetter M, Rathbauer J, Bacovsky D. Biodiesel production in Africa. Bioenergy for sustainable development in Africa. ISBN 978-94-007-2181-4 2012:93-102.

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Conference contributions | 2014

Biograce-II - Harmonised Greenhouse Gas Calculations for Electricity, Heating and Cooling from Biomass

Ludwiczek N, Bacovsky D, Neeft J. Biograce-II - Harmonised Greenhouse Gas Calculations for Electricity, Heating and Cooling from Biomass, 22nd European Biomass Conference 2014, 23rd-26th of June 2014, Hamburg, Germany. p 1359-1361.

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Contributions at other events | 2014

Biohydrogen Production Based on the Catalyzed Water Gas Shift Reaction in Wood Gas

Fail, S. Biohydrogen Production Based on the Catalyzed Water Gas Shift Reaction in Wood Gas, Ph.D. Thesis, Vienna University of Technology, Vienna, Austria, 2014.

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Conference contributions | 2014

Biomass CHP Oberwart –Production of heat, power and valuable gases

Rauch R. Biomass CHP Oberwart –Production of heat, power and valuable gases, 4th Central European Biomass Conference 2014, 15th-18th of January 2014, Graz, Austria.

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Conference contributions | 2014

Biomass CHP Oberwart: Status and Future Potentials

Wilk V, Bosch K, Rauch R, Hofbauer H. Biomass CHP Oberwart: Status and Future Potentials, 4th International Symposium on Gasification and its Applications (iSGA-4) 2014, 2nd-5th of September 2014, Vienna, Austria.

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Other publication | 2014

Biomass Gasification for Synthesis Gas Production and Applications of the Syngas

Rauch R, Hrbek J, Hofbauer H. Biomass gasification for synthesis gas production and applications of the syngas. Wiley Interdisciplinary Reviews: Energy and Environment. 2014;3(4):343-62.

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Synthesis gas from biomass can be produced and utilized in different ways. Conversion of biomass to synthesis gas can be done either in fluidized bed or entrained flow reactors. As gasification agent oxygen, steam, or mixtures are used. The most common use of biomass gasification in the last decades has been for heat and/or power production. Nowadays, the importance of transportation fuels from renewables is increased due to environmental aspects and growing fossil fuels prices. That is why the production of Fischer-Tropsch (FT) liquids, methanol, mixed alcohols, substitute natural gas (SNG), and hydrogen from biomass is now in focus of view. The most innovative and interesting ways of synthesis gas utilization and projects, BioTfueL or GoBiGas, BioLiq, Choren, etc. are discussed here. Further the microchannel technology by Oxford Catalysts and distributed production of SNG in decentral small scale are presented. The synthesis platform in Güssing, Austria is also presented. The FT liquids, hydrogen production, mixed alcohols, and BioSNG, these are the projects associated with the FICFB gasification plant in Güssing. Also the principle and examples of sorption-enhanced reforming to adjust H2/CO ratio in product gas during the gasification is described. Finally, in the conclusion also an outlook for the thermochemical pathway to transportation fuels is given. WIREs Energy Environ 2014, 3:343-362. doi: 10.1002/wene.97 For further resources related to this article, please visit the WIREs website. © 2013 Wiley Periodicals, Inc.


Conference contributions | 2014

Biomass in the Common Roadmap

Haslinger W. Biomass in the Common Roadmap, Annual Event of European Technology Platform Renewable Heating and Cooling 2014, 22nd of May 2014, Brussels, Belgium.

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Other Presentations | 2014

Can bioavailability of trace elements be measured in AD systems?

Ortner M, Rachbauer L, Somitsch W, Bochmann G, Fuchs W. Can bioavailability of trace elements be measured in AD systems? Biogas Science 2014, International Conference on Anaerobic Digestion 26th–30th of October 2014, Vienna, Austria.

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