Method for operating a firing plant

Details Method for operating a firing plant Method for operating a firing plant

F - Mech Eng,Light,Heat,Weapons

23

N

F23N 1/00 (2006.01) F23N 5/16 (2006.01) F23R 3/34 (2006.01)

Patent

CA 2636412

The invention relates to a method for operating a firing plant comprising at least one combustion chamber and at least one burner for producing hot gas, especially a gas turbine, preferably of a power plant. According to said method, a characteristic operating curve is defined in the form of a burner group gradation ratio (BGVFett) in order to operate the combustion chamber near the lean extinction limit. The pulsatile pressure (PulsIst) that is measured in the combustion chamber is processed and converted into corresponding signals (PulsIst, Filter(t)) by means of a filter device (2). A monitoring device (3) monitors whether at least one threshold value (PulsGrenz) of the pulsatile pressure is exceeded/not reached, and a desired pulsatile pressure value (PulsSoll) is adapted in accordance with the monitoring process. The processed pulsatile pressure (PulsIst,Filter(t)) is then compared to the adapted desired pulsatile pressure value (PulsSoll,adapt), and a corrective value .DELTA.BGV by which the initially defined burner group gradation ratio (BGVFett) is corrected is determined therefrom, thus allowing the firing plant to be operated near the lean extinction limit.

L'invention concerne un procédé de fonctionnement d'un foyer comprenant au moins une chambre de combustion et au moins un brûleur destiné à générer du gaz de chauffage, notamment une turbine à gaz, de préférence, d'une centrale électrique. On détermine, à cet effet, une caractéristique de fonctionnement destinée au fonctionnement de la chambre de combustion et proche de la limite d'extinction pauvre sous la forme d'un rapport de gradation des groupes de brûleurs (BGV<SUB>Fett</SUB>). Les pulsations de pression (PulsIst) mesurées dans la chambre de combustion sont traitées au moyen d'un dispositif filtrant (2) et converties en signaux correspondants (Puls<SUB>Ist</SUB>, <SUB>Filter</SUB>(t)). Un dispositif de surveillance (3) surveille tout dépassement par le haut/bas d'au moins une limite de pulsation (Puls<SUB>Grenz</SUB>) et la consigne de pulsation (Puls<SUB>Soll</SUB>) est adaptée en fonction de ces observations. Ensuite les pulsations de pression (Puls<SUB>Ist</SUB>,<SUB>Filter</SUB>(t)) traitées sont comparées à la consigne de pulsation(Puls<SUB>Soll,adapt</SUB>.) adaptée et, de là, on détermine une valeur de correction BGV qui permet de corriger le rapport de gradation des groupes de brûleurs (BGV<SUB>Fett</SUB>) défini au début. On obtient ainsi un mode de fonctionnement du foyer proche de la limite d'extinction pauvre .

Affiliated with

Also associated with

Rating

Method for operating a firing plant does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for operating a firing plant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for operating a firing plant will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1549374