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Publication Detail
From incineration to advanced fluid-bed gasification of waste
  • Publication Type:
    Journal article
  • Authors:
    Yassin L, Lettieri P, Simons SJR, Castillo-Castillo A, Leach M, Ryu C, Swithenbank J, Sharifi V
  • Publication date:
    08/2009
  • Pagination:
    169, 177
  • Journal:
    Proceedings of Institution of Civil Engineers: Waste and Resource Management
  • Volume:
    162
  • Issue:
    3
  • Print ISSN:
    1747-6526
Abstract
Energy recovery from municipal solid waste (MSW) is an important component of an integrated waste management strategy. This paper presents a critical assessment of traditional and more advanced process technologies for the thermal treatment of MSW. The study reports on the technical and economic performance of moving-grate incineration and fluidised-bed gasification processes for a medium-sized plant scale scenario of 100 kt/yr of waste input. Mass and energy balances of the processes are performed for generation of electric power using a steam turbine for the incineration process and a combined cycle gas turbine for the gasification process. The cost effectiveness of the two processes is assessed using a discounted cash flow analysis. The study shows that fluidised-bed gasification has better net electrical generation performance, with overall system efficiencies of 27 compared with 18 for incineration. In terms of economic performance, the gasification process has a lower capital cost (£26 million) and gate fee (£55/t) than incineration (£60 million and £80/t respectively). When the pre-treatment of waste was also taken into account, the fluid-bed gasification process still showed higher technical and economic competitiveness when compared with incineration. © 2009 Thomas Telford Ltd.
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