title: Two stage fluid bed-plasma gasification process for solid waste valorisation: technical review and preliminary thermodynamic modelling of sulphur emissions.
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 H(2)S) - Na and K based species in particular. Work is underway to further investigate and validate this.
authors: Department of Chemical Engineering, University College London, London, WC1E 7JE, Great Britain, United Kingdom. shane.morrin@ucl.ac.uk
authors: Shane
authors: S
authors: Morrin
authors: Paola
authors: P
authors: Lettieri
authors: Chris
authors: C
authors: Chapman
authors: Luca
authors: L
authors: Mazzei
mesh_terms: D003247:Conservation of Natural Resources; D004785:Environmental Pollutants / Q000737:chemistry*; D006358:Hot Temperature; D008956:Models, Chemical; D058626:Plasma Gases / Q000737:chemistry*; D012037:Refuse Disposal; D013455:Sulfur / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D004785:Environmental Pollutants; D058626:Plasma Gases; D013455:Sulfur