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Emissions Performance of a Novel Combustor Burning Shredded Wood

[+] Author Affiliations
C. Lindsey, A. Schmidt

Antares Group Inc., Landover, MD

M. Sawyer

Applied Research Associates, Inc., Panama City, FL

P. Aubrey

Clean Flame Energy, Scarborough, ME

A. Webster

Scarborough, ME

Paper No. NAWTEC17-2344, pp. 223-230; 8 pages
doi:10.1115/NAWTEC17-2344
From:
  • 17th Annual North American Waste-to-Energy Conference
  • 17th Annual North American Waste-to-Energy Conference
  • Chantilly, Virginia, USA, May 18–20, 2009
  • Conference Sponsors: Solid Waste Processing Division
  • ISBN: 978-0-7918-4880-7 | eISBN: 978-07918-3845-7
  • Copyright © 2009 by ASME

abstract

The Air Force Research Laboratory, Airbase Technologies Division (AFRL/RXQ) is engineering and evaluating the Transportable Waste-to-Energy System (TWES). This trailer mounted system will convert military base waste and biomass waste streams to useful heat and power. The Department of Energy (DOE) Federal Energy Management Program (FEMP) is a TWES funding partner. The first stage of the project is a suspension-type combustor (furnace). The furnace has been built and tested. A key feature of the furnace system is its unique patented combustion coil design. The design is intended to maximize ablative heat transfer by increasing particle residence time near a radiant ignition source. The innovative features of the design are targeted at ensuring that the system can be highly fuel-flexible to convert a variety of biomass and other waste streams to energy while demonstrating very low emissions. In 2008, the unit underwent two days of emissions stack testing using established Environmental Protection Agency (EPA) testing protocols. During the testing, extensive real-time data were also collected. This paper presents the data and corresponding analysis of the recent emissions testing performed while utilizing dry wood chips as a control fuel. Detailed emission comparisons are presented using publicly available information from commercial units and from a similarly sized experimental system for small biomass combustion. Key combustion efficiency factors, such as carbon monoxide emissions and nitrogen oxide emissions are presented. The authors also provide commentary on the results for next generation units and the use of this mode of energy conversion for small scale systems.

Copyright © 2009 by ASME

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