GE’s latest evolution of Dry Low NOx Combustion System (DLN 1+) for the GE 6b and 7ea gas turbines reduces NOx emissions to between 3 and 5 parts per million. This combustion system incorporates the latest in technology that improves stability and extends outage intervals.
Environmental Benefits
GE's DLN1+ Combustion System for GE 7EA gas turbines guarantees NOx emissions of 3 parts per million or lower, depending on the customer's operating conditions, without using water or a post-combustion system. Equipping a GE 7EA baseload gas turbine with DLN1+ technology instead of a DLN1 system reduces annual NOx emissions by 67 percent, an amount equivalent to the annual NOx emissions of 8,300 cars on US roads.
Operating Benefits
A natural-gas powered turbine equipped with GE's DLN1+ Combustion System has lower operating and maintenance expenses due to its improved heat rate, ability to lower NOx emissions without water or ammonia, and extended combustion inspection intervals compared to one equipped with a post-combustion system. Over a six-year period, operating and maintenance expenses for a baseload DLN1+ are at least $4.5 million lower (in 2010 dollars) than for a standard baseload combustor with water- or steam-injection and selective catalytic reduction (SCR) system, and $850,000 lower than for a DLN1 and SCR system.
