Recovery of energy from MSW by combustion in Waste-to-Energy (WTE) plants reduces landfilling and air/water emissions, and also lessens dependence on fossil fuels for power generation. The objective of this study was to assess the potential of gasification processes as an alternative to the combustion of MSW. Gasification uses a relatively small amount of oxygen or water vapor to convert the organic compounds into a combustible gas. Its advantages are a much lower volume of process gas per unit of MSW and thus smaller volume of gas control equipment; also, gasification generates a fuel gas that can be integrated with combined cycle turbines or reciprocating engines, thus converting fuel energy to electricity more efficiently than the steam boilers used in combustion of MSW. The disadvantages are the need to pre-process the MSW to a Refuse Derived Fuel (RDF) and the formation of tars that may foul the downstream gas cleaning and energy conversion systems. This paper presents two prominent gasification processes and compares their energy characteristics with a mass burn WTE and a suspension firing WTE that uses shredded WTE. The results showed potential energy and capital cost advantages for gasification. However, long-term operating results from industrial plants are needed for gasification to become a practical alternative to combustion.
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11th North American Waste-to-Energy Conference
April 28–30, 2003
Tampa, Florida, USA
Conference Sponsors:
- Solid Waste Processing Division
ISBN:
0-7918-3665-7
PROCEEDINGS PAPER
Energy Recovery From Municipal Solid Wastes by Gasification
Alexander Klein
,
Alexander Klein
Columbia University, New York, NY
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Nickolas J. Themelis
Nickolas J. Themelis
Columbia University, New York, NY
Search for other works by this author on:
Alexander Klein
Columbia University, New York, NY
Nickolas J. Themelis
Columbia University, New York, NY
Paper No:
NAWTEC11-1692, pp. 241-252; 12 pages
Published Online:
January 5, 2009
Citation
Klein, A, & Themelis, NJ. "Energy Recovery From Municipal Solid Wastes by Gasification." Proceedings of the 11th North American Waste-to-Energy Conference. 11th Annual North American Waste-to-Energy Conference. Tampa, Florida, USA. April 28–30, 2003. pp. 241-252. ASME. https://doi.org/10.1115/NAWTEC11-1692
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