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In a fuel lance for spraying liquid and/or gaseous fuels into a combustion chamber, which fuel lance is part of a secondary or tertiary burner, around which a hot-gas jet flows in a main flow direction, and comprises a liquid-fuel passage for supplying liquid fuel and first means for spraying the li

In a fuel lance for spraying liquid and/or gaseous fuels into a combustion chamber, which fuel lance is part of a secondary or tertiary burner, around which a hot-gas jet flows in a main flow direction, and comprises a liquid-fuel passage for supplying liquid fuel and first means for spraying the liquid fuel from the liquid-fuel passage into the combustion chamber, operation characterized by reduced addition of water is made possible owing to the fact that the first means comprise a liquid-fuel nozzle, which sprays the liquid fuel essentially parallel to the main flow direction as a plain jet into the combustion chamber.

대표청구항 ▼

1. A fuel lance for spraying liquid and/or gaseous fuels into a combustion chamber, the fuel lance comprising a liquid fuel passage for supplying liquid fuel and a liquid-fuel nozzle for spraying the liquid fuel from the liquid-fuel passage that extends essentially parallel to the main flow directio

1. A fuel lance for spraying liquid and/or gaseous fuels into a combustion chamber, the fuel lance comprising a liquid fuel passage for supplying liquid fuel and a liquid-fuel nozzle for spraying the liquid fuel from the liquid-fuel passage that extends essentially parallel to the main flow direction of the liquid fuel and out of the passage as a plain jet into a combustion chamber, the liquid-fuel nozzle having a plurality of axially oriented bores which are arranged in a distributed manner around the liquid-fuel nozzle, including a central liquid-fuel tube, which is arranged concentrically to a central axis of the lance, and which encloses the liquid-fuel passage a lance shell, a gas tube which encloses the liquid-fuel tube and forms between the lance shell and the gas tube an air passage for directing cooling or atomizing air, and including second means for spraying the gaseous fuel from the gas tube into a combustion chamber, and including third means for spraying air from the air passage into a combustion chamber, the lance axis being oriented essentially parallel to the main flow direction, the third means includes a nozzle arranged to form a sheath of air surrounding liquid-fuel discharging from the liquid-fuel nozzle.