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Mechanisms of fine particulates formation with alkali metal compounds during coal combustion

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dc.creator Takuwa, Tsuyoshi
dc.creator Mkilaha, Iddi
dc.creator Naruse, Ichiro
dc.date 2016-07-12T10:25:01Z
dc.date 2016-07-12T10:25:01Z
dc.date 2006-02
dc.date.accessioned 2018-03-27T08:37:58Z
dc.date.available 2018-03-27T08:37:58Z
dc.identifier Takuwa, T., Mkilaha, I.S. and Naruse, I., 2006. Mechanisms of fine particulates formation with alkali metal compounds during coal combustion. Fuel, 85(5), pp.671-678.
dc.identifier http://hdl.handle.net/20.500.11810/3105
dc.identifier 10.1016/j.fuel.2005.08.043
dc.identifier.uri http://hdl.handle.net/20.500.11810/3105
dc.description Full text can be accessed at http://www.sciencedirect.com/science/article/pii/S0016236105003200
dc.description Two types of coals with different sodium (Na) and potassium (K) concentrations were burned in an electrically heated drop tube furnace, to study the formation of particulates in association to alkali metal compounds from the coals. The particulates formed from these coals during combustion were separated by a low pressure impactor (LPI). The particulates collected in each stage of the LPI were analyzed, using an atomic adsorption spectrometer (AAS). The results obtained show that ash particles have bimodal particle size distribution for both coal types. This tendency could be due to the difference of the inherent minerals in raw coals. It was further observed that Na and K were enriched in the fine particulates for both types of coal. There was a dependence of the Na enrichment on the fine particles on concentration of excluded mineral in the raw coals. This work, therefore, showed that the appearance of alkali metal in the ash particles related to the nature of Na and K concentrations in raw coals.
dc.language en
dc.subject Fine particulates
dc.subject Mineral particles
dc.subject Alkali metal compounds
dc.subject Coal combustion
dc.title Mechanisms of fine particulates formation with alkali metal compounds during coal combustion
dc.type Journal Article


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