Browsing USN Open Archive by Author "Ariyaratne, W. K. Hiromi"
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Alternative fuels in cement kilns - characterization and experiments
Ariyaratne, W. K. Hiromi (Master thesis, 2010-05-04)In this thesis, the possibilitites and limitations of using alternative fuels in cement kilns are considered. -
Determination of biomass fraction for partly renewable solid fuels.
Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian; Tokheim, Lars-André (Journal article; Peer reviewed, 2014-04-29)Biomass-based waste fuels are used in many industrial applications since combustion of biomass gives no net emissions of carbon dioxide. Some waste fuels, e.g. RDF (refuse derived fuels), contain not only biomass, but also ... -
Determination of fossil fraction of refuse derived fuel by the selective dissolution method in calorific value basis: Development of simplified method.
Ariyaratne, W. K. Hiromi; Asgautsen, Øyvind; Melaaen, Morten Christian; Eine, Kristin; Tokheim, Lars-André (Journal article; Peer reviewed, 2012)Determination of net CO2 emissions from combustion of Refuse Derived Fuel (RDF) is not straight forward due to the heterogeneous nature of the fuel. The fossil fraction of the fuel is an essential parameter for the ... -
Euler-Granular Approach for Modelling of Dilute Phase Pneumatic Conveying in a Vertical Pipe
Welahettige, Prasanna Kumara Welahetti; Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian (Journal article; Peer reviewed, 2017)In the present study, vertically upward dilute phase pneumatic conveying flow was predicted using Euler - Granular method. Three dimensional computational fluid dynamics simulations were carried out for an 8 m long and ... -
Increased Coal Replacement in a Cement Kiln Burner by Feeding a Mixture of Solid Hazardous Waste and Shredded Plastic Waste
Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian; Tokheim, Lars-André (Journal article; Peer reviewed, 2013-07)The present study aims to find the maximum possible replacement of coal by combined feeding of plastic waste and solid hazardous waste mixed with wood chips (SHW) in rotary kiln burners used in cement kiln systems. The ... -
Kiln process impact of alternative solid fuel combustion in the cement kiln main burner - Mathematical modelling and full-scale experiment
Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian; Tokheim, Lars-André; Manjula, Edirisinghe V. P. J. (Journal article; Peer reviewed, 2014-02)Increased use of alternative fuels in cement kilns is a trend in the world. However, replacing fossil fuels like coal with different alternative fuels will give various impacts on the overall kiln process due to the fuel ... -
Optimum feeding rate of solid hazardous waste in a cement kiln burner
Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian; Tokheim, Lars-André (Journal article; Peer reviewed, 2013)Solid hazardous waste mixed with wood chips (SHW) is a partly CO2 neutral fuel, and hence is a good candidate for substituting fossil fuels like pulverized coal in rotary kiln burners used in cement kiln systems. SHW is ... -
The effect of alternative fuel combustion in the cement kiln main burner on production capacity and improvement with oxygen enrichment.
Ariyaratne, W. K. Hiromi; Melaaen, Morten Christian; Tokheim, Lars-André (Journal article; Peer reviewed, 2013)A mathematical model based on a mass and energy balance for the combustion in a cement rotary kiln was developed. The model was used to investigate the impact of replacing about 45 % of the primary coal energy by different ...