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New GT Combustion System from GE

Posted on February 1, 2005

GE Energy's oil and gas business has introduced a new Dry Low NOx combustion system that is said to reduce NOx emissions for its 12 MW class GE 10-2 gas turbine from 25 to 15 ppm. The new hardware and software were extensively tested at GE Energy laboratories in Greenville, South Carolina, U.S.A. Full-scale operability tests, conducted on a GE 10-2 engineering test rig in Florence, verified the integrated system performance over a broad range of site operating conditions.

The 15 ppm NOx emissions level is guaranteed over operating conditions spanning 50 to 100% of load, and an ambient temperature range of -29° to 38°C. It was achieved without the use of catalytic hardware, to minimize the number of combustion parts and simplify machine maintenance. The new combustion chamber features the addition of four GE5 premixed pilot burners, and also includes a flame detector, flashback thermocouples and a humming detection system for full flame control.

The 15 ppm combustion system is now available on all new GE 10-2 gas turbines. Current GE 10-2 users also can benefit from the new technology, since existing 25 ppm machines can be upgraded to the 15 ppm emissions system. The new emissions technology also will be adapted for the GE 10-1 (single shaft) gas turbine for power generation applications. Operability tests will be scheduled for the GE 10-1 engineering test rig in Florence.

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