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Andersson, Bengt-Åke
Publications (9 of 9) Show all publications
Eboh, F. C., Andersson, B.-Å. & Richards, T. (2019). Economic evaluation of improvements in a waste-to-energy combined heat and power plant. Waste Management
Open this publication in new window or tab >>Economic evaluation of improvements in a waste-to-energy combined heat and power plant
2019 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456Article in journal (Refereed) Published
Abstract [en]

Improving the efficiency of waste-to-energy combined heat and power plants increases their production of both electricity and heat. Economic evaluation of such improvements enables adequate decisions to be made between the various alternatives with respect to economic viability of the plant. In this study, the cost and profitability of different modifications to improve efficiency in a waste-to-energy plant are considered: these include the re-arrangement of air heaters, the introduction of a reheater, flue gas condensation (FGC) and an integrated gasification-combustion process. The base case and the modifications are evaluated and compared when operating either as a combined heat and power plant or as a power plant. Modelling, simulation and cost estimations were performed with the Aspen Plus software. Although the integrated gasification-combustion technology with FGC has the highest exergy efficiency, its higher capital cost is greater than all of the other alternatives. Modification 6, which involves both re-arrangement and changing the air heating medium has the lowest capital cost with respect to enhancing exergy efficiency. Modifications 1 and 7, involving FGC, are the best alternatives for the capital cost per total unit of revenue generated. These modifications not only provides the highest heat production but also the highest net present value (NPV). The base case and the modifications investigated all have positive NPV, indicating that a waste-to-energy combined heat and power plant is an attractive investment. However, an increase of about 122% in the gate fees would be required for a system with only electricity production to be profitable.

Place, publisher, year, edition, pages
Elsevier, 2019
Keywords
Waste-to-energy plant, Efficiency improvement, Economic viability, Cost of improvement
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-21730 (URN)10.1016/j.wasman.2019.09.008 (DOI)
Available from: 2019-09-14 Created: 2019-09-14 Last updated: 2019-10-07Bibliographically approved
Björk, H., Lindecrantz, K., Ericsson, D., Sarv, H., Bolton, K., Börjesson, A., . . . Skrifvars, M. (2009). 20 år med Institutionen Ingenjörshögskolan: historik, nuläge och framtid. Högskolan i Borås
Open this publication in new window or tab >>20 år med Institutionen Ingenjörshögskolan: historik, nuläge och framtid
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2009 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Högskolan i Borås, 2009
Series
Vetenskap för profession: rapport, ISSN 1654-6520 ; 10
National Category
Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-4430 (URN)2320/5703 (Local ID)978-91-85659-49-4 (ISBN)2320/5703 (Archive number)2320/5703 (OAI)
Note

En jubileumsskrift

Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2017-11-09Bibliographically approved
Claesson, F., Wikström Blomqvist, E., Johansson, A., Skrifvars, B. & Andersson, B.-Å. (2009). Annual variation in elemental, dioxin and PCB content within Swedish waste fuels: results from two plants. In: Proceedings Sardinia 2009, Twelfth International Waste Management and Landfill Symposium S. Margherita di Pula, Cagliari, Italy; 5-9 October 2009: . Paper presented at Proceedings Sardinia 2009, Twelfth International Waste Management and Landfill Symposium S. Margherita di Pula, Cagliari, Italy; 5-9 October 2009 (pp. 347-348).
Open this publication in new window or tab >>Annual variation in elemental, dioxin and PCB content within Swedish waste fuels: results from two plants
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2009 (English)In: Proceedings Sardinia 2009, Twelfth International Waste Management and Landfill Symposium S. Margherita di Pula, Cagliari, Italy; 5-9 October 2009, 2009, p. 347-348Conference paper, Published paper (Other academic)
Abstract [en]

This paper reports on the annual variation of the composition of waste fuels fed to two different Waste to Energy (WtE) plants in Sweden. Twelve waste fuel samples from one year of sampling in each plant were analysed with Ion Chromatography and Inductively Coupled Plasma-Optical Emission Spectroscopy to study the variation of elements within and between the fuels of the two different plants and also to investigate any seasonal variations. The ultimate analyses show that the composition was rather similar throughout the sampling period for both plants, respectively. However, there was a larger variation in the content of ash forming elements within and between the plants. Trace metals, present in low concentrations, showed the widest relative variation. The samples were also analysed for dioxin and PCB content. The reported average value for all samples is 29 ± 15 ng I-TEQ dioxin per kilo dry waste. The calculated toxicity of twelve PCB congeners, reported as WHO-PCB, is less or close to the detection limit < 0.02 μg PCB WHO-TEQ per kilo dry waste.

Keywords
waste combustion, fuel sampling, chemical characterisation, dioxin, PCB, Energi och material
National Category
Natural Sciences Engineering and Technology
Identifiers
urn:nbn:se:hb:diva-6225 (URN)2320/5595 (Local ID)2320/5595 (Archive number)2320/5595 (OAI)
Conference
Proceedings Sardinia 2009, Twelfth International Waste Management and Landfill Symposium S. Margherita di Pula, Cagliari, Italy; 5-9 October 2009
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-02-18Bibliographically approved
Andersson, B.-Å. & Johansson, A. (2009). Förbränning och termiska system för hållbar utveckling. Vetenskap för profession (10), 79-81
Open this publication in new window or tab >>Förbränning och termiska system för hållbar utveckling
2009 (Swedish)In: Vetenskap för profession, ISSN 1654-6520, no 10, p. 79-81Article in journal (Other academic) Published
Place, publisher, year, edition, pages
Högskolan i Borås, 2009
Keywords
Energi och material
National Category
Materials Engineering
Identifiers
urn:nbn:se:hb:diva-2724 (URN)2320/5925 (Local ID)978-91-85659-49-4 (ISBN)2320/5925 (Archive number)2320/5925 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2018-01-16Bibliographically approved
Johansson, A., Eskilsson, D., Johansson, L., Wikström-Blomqvist, E., Andersson, B.-Å. & Johnsson, A. (2007). Combustion of Demanding Waste Fractions in a 10 MWe Waste-toEnergy Plant. In: In Proceeding of ISWA/NVRD World Congress 2007: . Paper presented at ISWA/NVRD World Congress 2007.
Open this publication in new window or tab >>Combustion of Demanding Waste Fractions in a 10 MWe Waste-toEnergy Plant
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2007 (English)In: In Proceeding of ISWA/NVRD World Congress 2007, 2007Conference paper, Published paper (Other academic)
Keywords
waste combustion, fluifised bed, automative shredder residue, sewage sludge, deposits, gas composition, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-5759 (URN)2320/2915 (Local ID)2320/2915 (Archive number)2320/2915 (OAI)
Conference
ISWA/NVRD World Congress 2007
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-09-28Bibliographically approved
Johansson, A., Blomqvist, E., Ekvall, A., Gustavsson, L., Tullin, C., Andersson, B.-Å., . . . Peters, G. (2007). Report: Waste Refinery in the Municipality of Borås. Waste Management & Research, 25(3), 296-300
Open this publication in new window or tab >>Report: Waste Refinery in the Municipality of Borås
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2007 (English)In: Waste Management & Research, ISSN 0734-242X, E-ISSN 1096-3669, Vol. 25, no 3, p. 296-300Article in journal (Refereed) Published
Place, publisher, year, edition, pages
SAGE Publications, 2007
Keywords
waste treatment, biological treatment, incineration, Energi och material
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:hb:diva-2278 (URN)10.1177/0734242X07079186 (DOI)2320/2912 (Local ID)2320/2912 (Archive number)2320/2912 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-01Bibliographically approved
Elled, A.-L., Åmand, L.-E., Leckner, B. & Andersson, B.-Å. (2006). Influence of phosphorus on sulphur capture during co-firing of sewage sludge with wood or bark in a fluidised bed. Fuel, 85(12), 1671-1678
Open this publication in new window or tab >>Influence of phosphorus on sulphur capture during co-firing of sewage sludge with wood or bark in a fluidised bed
2006 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 85, no 12, p. 1671-1678Article in journal (Refereed) Published
Abstract [en]

Interference from phosphorus on sulphur capture during co-firing of sludge with wood has been investigated in a circulating fluidised bed boiler. Chemical equilibrium analyses were performed on the combustion system to complement the experimental results. It was found that the relatively high content of phosphorus in municipal sewage sludge interferes with the sulphur capture by occupying calcium, which otherwise would be available for reaction with sulphur. This fact must be taken into account when sulphur capture strategies are decided for reduction of sulphur dioxide emissions from sewage sludge as an additional fuel.

Keywords
Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-2308 (URN)2320/2987 (Local ID)2320/2987 (Archive number)2320/2987 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-11-27Bibliographically approved
Elled, A.-L., Åmand, L.-E., Leckner, B. & Andersson, B.-Å. (2006). The fate of trace elements in fluidised bed combustion of sewage sludge and wood. Fuel, 86(5-6), 843-852
Open this publication in new window or tab >>The fate of trace elements in fluidised bed combustion of sewage sludge and wood
2006 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 86, no 5-6, p. 843-852Article in journal (Refereed) Published
Abstract [en]

Combustion tests have been carried out in a fluidised bed boiler to investigate the fate of trace elements during co-combustion of wood and municipal sewage sludge. The approach was to collect fuel and ash samples and to perform thermodynamic equilibrium calculations for gasification (reducing) and combustion (oxidising) conditions. Trace elements are found in the ash. Even most of the highly volatile Hg is captured in the bag filter ash. The bag filter ash offers higher surface area than the secondary cyclone ash and enhances the capture of Hg. There is no obvious correlation between capture and parameters investigated (sludge precipitation agent and lime addition). As, Cd, Hg, Pb, Se, Sb and Tl are predicted by equilibrium calculations to be volatile in the combustion chamber under oxidising conditions and Hg even at the filter temperature (150°C). Reducing conditions promote, in some case more than others, the volatility of As, Cd, Pb, Sb, Se, Tl and Zn. The opposite effect was observed for Cu and Ni. Data points to the necessity of including bag-filter in the gas cleaning system in order to achieve good removal of toxic trace elements.

Place, publisher, year, edition, pages
Elsevier, 2006
Keywords
co-combustion, sewage sludge, trace element, Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-2283 (URN)10.1016/j.fuel.2006.08.014 (DOI)2320/2918 (Local ID)2320/2918 (Archive number)2320/2918 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-11-27Bibliographically approved
Elled, A.-L., Åmand, L.-E., Andersson, B.-Å. & Leckner, B. (2005). Phosphorus in ash from co-combustion of municipal sewage sludge with wood in a CFB boiler: A comparison of experimental data with predictions by a thermodynamic equilibrium model. In: : . Paper presented at Proc. of the 18th International Conference on Fluidized Bed Combustion, Toronto, Canada, May 22-25. , Article ID FBC05-78072.
Open this publication in new window or tab >>Phosphorus in ash from co-combustion of municipal sewage sludge with wood in a CFB boiler: A comparison of experimental data with predictions by a thermodynamic equilibrium model
2005 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Combustion tests have been carried out in a circulating fluidised bed (CFB) boiler co-firing wood and municipal, digested and mechanical dewatered sewage sludge from two Swedish wastewater treatment plants, using either iron sulphate or aluminium sulphate as precipitating chemicals. Experimental data on the concentration of various phosphorous compounds in the ashes are compared with theoretical equilibrium predictions. A clear relationship is not found between the employed precipitation chemical and the formation of phosphorous compounds in the ash. Hematite (Fe2O3(s)) is predicted to be the stable iron compound, and even in the sludge precipitated by iron sulphate, the aluminium content is sufficient to form aluminium phosphate (AlPO4(s)) in similar amounts as in the sludge precipitated by aluminium sulphate. Lime addition to the bed gives a decreased formation of AlPO4(s) in favour of calcium orthophosphate (Ca3(PO4)2(s)), which interferes with the sulphur capture efficiency of lime.

Keywords
Energi och material
National Category
Energy Engineering
Identifiers
urn:nbn:se:hb:diva-5764 (URN)2320/2985 (Local ID)2320/2985 (Archive number)2320/2985 (OAI)
Conference
Proc. of the 18th International Conference on Fluidized Bed Combustion, Toronto, Canada, May 22-25
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2017-02-22Bibliographically approved
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