Low-Emission combustion for Industrial Gas Turbines
DLE Technology – Dry Low Emission Systems
Kawasaki DLE technology reduces NOx emissions without water or steam injection and ensures stable, efficient combustion processes across the entire load range. With precise combustion chamber design and state-of-the-art control technology, Kawasaki offers a reliable solution for tomorrow's strict emission standards and energy requirements.
DLE combustion chamber variants
What is DLE?
DLE stands for Dry Low Emission and refers to a combustion chamber technology that enables the lowest NOx emissions in a load range between 50 and 100% without the addition of water or steam.
Various variants are available depending on requirements:
25 ppm DLE system:
Compliance with the limit values according to TA Luft.
15 ppm DLE system:
Further development of the 25 ppm combustion chamber with even lower emission values.
9 ppm Single Digit DLE system:
Latest development stage with ‘single digit’ NOx values.
DLE systems by Gas Turbine Type
Small industrial gas turbine for low-emission DLE operation
The GPB17D is available with a 15 ppm or 9 ppm DLE system and achieves particularly low NOx values in dry operation without water or steam injection.
Compact industrial gas turbine for low-emission DLE operation
The GPB50D is available with a 15 ppm DLE system and achieves very low NOx values in dry operation without water or steam injection.
Flexible turbine in the medium power segment
The GPB80D offers 25 ppm, 15 ppm and 9 ppm single-digit DLE systems, meeting a variety of emission requirements with high operational reliability.
Powerful turbine for demanding applications
The GPB180D is available with 25 ppm and 15 ppm DLE systems and ensures stable combustion conditions and compliance with strict NOx limits.
High-efficient twin-shaft turbine
The GPB300D is available with a 15 ppm DLE system and ensures stable combustion conditions and compliance with strict NOx limits.
Bleed-air-system for DLE control
During partial load operation of a gas turbine, more ambient air is sucked in and compressed by the compressor than is required for the combustion process. This excess air would prevent compliance with the specified exhaust gas values. Therefore, in the partial load range, not only is the fuel regulated, but also part of the compressor air: it is discharged directly into the exhaust duct, bypassing the combustion chambers. This Bleed-Air-System ensures that the turbine maintains stable combustion conditions even in partial load operation and achieves the required NOx values.
