MULTI-FUEL COMBUSTOR

The 100 kW down-fired multi-fuel combustor is able to feed gas, liquid, or powdered solid fuel—or combinations of fuels—and is suitable for combustion testing in air, oxygen-enriched air or oxygen/CO2 environments. The combustor is outfitted with thermocouples and sampling ports along the length of the reactor to track heat and the environment as feedstock is converted. Flue gas is cooled in a horizontal multi-zone heat exchanger and flows into a baghouse to remove fly ash and other particulate.

Specifications

  • Feedstock: Gas, liquid or pulverized solid fuels
  • Maximum temperature: 3000°F (1650°C)
  • Atmospheric pressure
  • Overall reactor dimensions:  Ø 30 in (0.76 m) x 14 ft (4.3 m) tall
  • Inner dimensions: Burner Zone Ø 15 in (0.76 m) x 48 in (1.2 m) tall, radiant zone Ø 10.5 in (0.27 m) x 102 in (2.6 m)
  • Cooling section with water-cooled heat exchangers – 12 ft (3.7 m)
  • Swirl-stabilized burner

 Capabilities

  • Systematic control of burner variables
  • Air or oxy-firing
  • Continuous emissions monitoring equipment for real-time measurement of O2, CO2, CO, NOx, SO2 and THC emissions, with other species-based measurements available upon request
  • Detailed particulate measurements, including ultrafine particles
  • Optical diagnostics

Research

  • Comparison of combustion performance of different fuels or treated and untreated fuels
  • Studying the effect of O2 in recycled flue gas on flame stabilization of well-fined axial diffusion flames
  • Determining the desired characteristics of a low emission, highly-stable, oxy-coal burner
  • Investigating specially directed O2 and cooled walls with minimum flue gas recycle
  • Determining effects of flue gas recycle parameters on size segregated ash composition during oxy-coal combustion