Vortex combustor for low NOx emissions when burning lean premixed high hydrogen content fuel

Patent · Tue Oct 20 04:00:00 EDT 2009

OSTI ID:1001788

Steele, Robert C ^[1]; Edmonds, Ryan G ^[2]; Williams, Joseph T ^[3]; Baldwin, Stephen P ^[4]

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1. Woodinville, WA
2. Renton, WA
3. Kirkland, WA
4. Winchester, MA

A trapped vortex combustor. The trapped vortex combustor is configured for receiving a lean premixed gaseous fuel and oxidant stream, where the fuel includes hydrogen gas. The trapped vortex combustor is configured to receive the lean premixed fuel and oxidant stream at a velocity which significantly exceeds combustion flame speed in a selected lean premixed fuel and oxidant mixture. The combustor is configured to operate at relatively high bulk fluid velocities while maintaining stable combustion, and low NOx emissions. The combustor is useful in gas turbines in a process of burning synfuels, as it offers the opportunity to avoid use of diluent gas to reduce combustion temperatures. The combustor also offers the possibility of avoiding the use of selected catalytic reaction units for removal of oxides of nitrogen from combustion gases exiting a gas turbine.

• Research Organization: Ramgen Power Systems, LLC (Bellevue, WA)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-00NT40915
• Assignee: Ramgen Power Systems, LLC (Bellevue, WA)
• Patent Number(s): 7,603,841
• Application Number: 11/365,969
• OSTI ID: 1001788
• Country of Publication: United States
• Language: English

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