Enhancement of the use of wood fuels in heat and power production in integrated pulp and paper mills

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Spets, Jukka-Pekka
dc.date.accessioned 2012-02-10T09:02:27Z
dc.date.available 2012-02-10T09:02:27Z
dc.date.issued 2003-12-12
dc.identifier.isbn 951-22-6422-6
dc.identifier.issn 1456-7474
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/2125
dc.description.abstract The drying of moist biofuels such as wood-based biomasses should be as effluent-free and as energy-efficient as possible in order to ensure the safe and economical operation of industrial CHP plants. This work presents a multistage drying system (MSDS), which provides significant benefits in comparison with earlier conventional single dryer systems. This new application is installed most promisingly in integrated pulp and paper mills. The MSDS, which simultaneously uses secondary process energy, as well as backpressure and extraction steam as the drying energy, enables a smaller volume flow of drying air than single dryer systems. Depending on the structure of the system, up to 100 % of the exhaust drying air can be utilized as combustion air. The use of MSDSs enables an increase in CHP plant boiler capacity, which in turn boosts the production of power and heat in combined heat and power (CHP) plants. Additionally, the improvement in CHP can be achieved with reduced organic emissions from moist biomass drying. Also, the amount of unburned organic compounds and of CO in flue gases from combustion is reduced as a result of the improved quality of the biofuels. When compared to direct steam drying, the MSDS also better minimizes, or even eliminates, the formation of organically loaded condensates in the drying operation. en
dc.format.extent 49, [65]
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Helsinki University of Technology en
dc.publisher Teknillinen korkeakoulu fi
dc.relation.ispartofseries Energiatalous ja voimalaitostekniikka. A en
dc.relation.ispartofseries 11 en
dc.relation.haspart Additional errata file available. en
dc.relation.haspart Spets J.-P., 2001. A new multistage drying system. Proceedings of the 1st Nordic Drying Conference. Trondheim, Norway, 27-29 June 2001, Paper no. 13. [article1.pdf] © 2001 SINTEF. By permission.
dc.relation.haspart Spets J.-P. and Ahtila P., 2001. Preliminary economical examinations for a new multistage biofuel drying system integrated in industrial CHP-power plant. Proceedings of the 1st Nordic Drying Conference. Trondheim, Norway, 27-29 June 2001, Paper no. 14. [article2.pdf] © 2001 SINTEF. By permission.
dc.relation.haspart Spets J.-P. and Ahtila P., 2001. A new multistage biofuel drying system integrated into an industrial CHP-power plant: description of process and performance calculations. Proceedings of 2001 ACEEE Summer Study on Energy Efficiency in Industry. New York, USA, 24-27 July 2001, Vol. 2, pages 67-78. [article3.pdf] © 2001 American Council for an Energy-Efficient Economy (ACEEE). By permission.
dc.relation.haspart Spets J.-P. and Ahtila P., 2002. Improving the power-to-heat ratio in CHP plants by means of a biofuel multistage drying system. Applied Thermal Engineering 22, No. 10, pages 1175-1180. [article4.pdf] © 2002 Elsevier Science. By permission.
dc.relation.haspart Spets J.-P. and Ahtila P., Reduction of organic emissions by using a multistage drying system for wood-based biomasses. Drying Technology – An International Journal, accepted for publication. [article5.pdf] © 2003 by authors and © 2003 Marcel Dekker, Inc. By permission.
dc.subject.other Paper technology en
dc.subject.other Energy en
dc.title Enhancement of the use of wood fuels in heat and power production in integrated pulp and paper mills en
dc.type G5 Artikkeliväitöskirja fi
dc.description.version reviewed en
dc.contributor.department Department of Mechanical Engineering en
dc.contributor.department Konetekniikan osasto fi
dc.subject.keyword multistage drying system en
dc.subject.keyword energy efficiency en
dc.subject.keyword combined heat and power production (CHP) en
dc.identifier.urn urn:nbn:fi:tkk-000937
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.type.ontasot Doctoral dissertation (article-based) en
dc.contributor.lab Laboratory of Energy Economics and Power Plant Engineering en
dc.contributor.lab Energiatalouden ja voimalaitostekniikan laboratorio fi


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