Two stage fluid bed-plasma gasification process for solid waste valorisation: technical review and preliminary thermodynamic modelling of sulphur emissions |
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Authors: | Morrin Shane Lettieri Paola Chapman Chris Mazzei Luca |
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Institution: | a Department of Chemical Engineering, University College London, London, WC1E 7JE, Great Britain, United Kingdom b Advanced Plasma Power, South Marston Business park, Swindon, SN3 4DE, Great Britain, United Kingdom |
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Abstract: | Gasification of solid waste for energy has significant potential given an abundant feed supply and strong policy drivers. Nonetheless, significant ambiguities in the knowledge base are apparent. Consequently this study investigates sulphur mechanisms within a novel two stage fluid bed-plasma gasification process. This paper includes a detailed review of gasification and plasma fundamentals in relation to the specific process, along with insight on MSW based feedstock properties and sulphur pollutant therein. As a first step to understanding sulphur partitioning and speciation within the process, thermodynamic modelling of the fluid bed stage has been performed. Preliminary findings, supported by plant experience, indicate the prominence of solid phase sulphur species (as opposed to H2S) - Na and K based species in particular. Work is underway to further investigate and validate this. |
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Keywords: | Gasification Waste Sulphur Fluidised Plasma Model |
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