Bulletin 165C

11/01

Proven Reliability ForSupplemental Firing

ECLIPSE FLUEFIREBURNERS

E C L I P S E

Supplemental firing forcogeneration and combinedcycle installationsIn power generation stations, the exhaustgases from gas turbines contain a significant quantity of energy in the formof heat. This energy can be used eitherdirectly in heating processes or to generate steam, which can again drivesteam turbines to generate more electricity. When the heat requirement isgreater than that available from the turbine exhaust gases, supplementary firing can be applied. Eclipse has designedthe FlueFire burner specifically for thispurpose. It is an in-duct burner which canbe located directly in the exhaust gasesbetween the turbine and waste heat boiler. The burner is also suitable for freshair operation.

Turndown The FlueFire burner optimizes system efficiency as it takes itsoxygen requirement from the turbineexhaust gases. A turndown over 10:1 isgenerally obtainable across the full burnermatrix without the need to isolate burnerrows. This enables the burner to meetchanging heat demands while maintaininguniform distribution across the duct area.

Flame stability and low Nox Thedesign of the FlueFire burner ensures intimate mixing of the turbine exhaustgases with the fuel which creates exceptional flame stability at 100Pa(0.4" w.c.) pressure drop across the burner even on low calorific gases, whichin turn ensures clean combustion withlow NOx emissions. This is achieved byswirling the turbine exhaust gases intothe gas jets. The swirling also cools themodule material and stabilizes combustion just in front of the burner,allowing high downstream temperatures.

Operating Temperatures Burner mod-ules are manufactured from high tempera-ture alloy steel, precision cut by laser toensure uniformity. This, together with theself-cooling design, enables the burner tofunction with inlet temperatures up to700°C (1300°F) and outlet temperatures upto 1200°C (2200°F).

Description FlueFire burners consist of arolled steel channel framework internallyinsulated and covered with a heat resistantsheet which is attached on the mountingframe and provided with expansionallowance. Each burner module comprisesa 6” stabilization plate perforated to createa local swirl in the turbine gas. Rows canbe fired individually, or provided with verti-cal flame propagation plates linking eachmanifold row. When equipped with propa-gation plates, the pilot is located at the bot-tom of the rows and a UV scanner ismounted at the end of the flame run.

FlueFire BurnersEclipse supplies the complete combustion system including FlueFire duct burner, fuel train skid and control panel

Bulletin 165C 11/01 Litho in USA

FlueFire burner headTypical Cogeneration system

FlueFire duct unit

Flame propagation plateconnects burner rows

FlueFire system installed in a cogeneration plant

Generator

Air InletGas

Turbine

HeatRecovery

Steam Generator