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The invention relates to a method for starting a burner for combusting synthesis gases, wherein said burner comprises first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with co

The invention relates to a method for starting a burner for combusting synthesis gases, wherein said burner comprises first and second fuel passages, the first fuel passage encompasses the second fuel passage in a substantially concentric manner and the gas transferred to the burner is mixed with combusting air and is combusted. According to said invention, in order to start the burner, the second fuel passage is first loaded with a synthesis gas to a predefined burner power at a first starting phase and the first fuel passage is loaded with the synthesis gas at a second starting phase.

대표청구항 ▼

1. A method for starting a burner designed to combust a synthesis gas, wherein the burner has a first fuel passage and a second fuel passage, the first fuel passage concentrically encompassing the second fuel passage and the synthesis gas is supplied to the burner, mixed with combustion air and comb

1. A method for starting a burner designed to combust a synthesis gas, wherein the burner has a first fuel passage and a second fuel passage, the first fuel passage concentrically encompassing the second fuel passage and the synthesis gas is supplied to the burner, mixed with combustion air and combusted, and wherein the second fuel passage is first charged with synthesis gas to a predetermined burner power to start the burner in an initial phase and the first fuel passage is then subsequently charged with synthesis gas in a start phase following the initial phase, comprising: supplying a small synthesis gas mass flow via an ignition pilot burner;igniting the small synthesis gas mass flow to form an ignition pilot flame;initiating a flow of synthesis gas out of the second fuel passage after the ignition pilot flame has been ignited; andigniting the second fuel passage gas flow via the ignition pilot flame to form a pilot flame, whereinthe ignition pilot burner is arranged upstream of a swirl generator and synthesis gas is supplied through the second fuel passage such that the pilot flame is removed from the region of the swirl generator,wherein removal is effected by reducing the calorific value of the synthesis gas supplied through the second fuel passage in such a manner that a flow speed of the synthesis gas is set, which is significantly higher than the flame speed,wherein the calorific value is reduced by diluting the synthesis gas with an inert medium,wherein only the second fuel passage is charged with synthesis gas in the initial phase,wherein the second fuel passage is charged with synthesis gas during the start phase,wherein during the initial phase a continuously increasing mass flow of synthesis gas is supplied to the second fuel passage to a maximum burner power achievable over the second fuel passage,wherein an inert medium is mixed with the synthesis gas to set a required calorific value, andwherein when the first fuel passage is connected in the start phase, a large quantity of inert medium is first mixed with the synthesis gas supplied in the first fuel passage such that a sudden jump in power is prevented during the transition from initial phase to start phase. 2. The method as claimed in claim 1, wherein removal is effected by preventing any interference edges, at which vortex streets may develop. 3. A method for starting a burner designed to combust a synthesis gas, wherein the burner has a first fuel passage and a second fuel passage, the first fuel passage concentrically encompassing the second fuel passage and the synthesis gas is supplied to the burner, mixed with combustion air and combusted, and wherein the second fuel passage is first charged with synthesis gas to a predetermined burner power to start the burner in an initial phase and the first fuel passage is then subsequently charged with synthesis gas in a start phase following the initial phase, comprising: supplying a small synthesis gas mass flow via an ignition pilot burner;igniting the small synthesis gas mass flow to form an ignition pilot flame;initiating a flow of synthesis gas out of the second fuel passage after the ignition pilot flame has been ignited; andigniting the second fuel passage gas flow via the ignition pilot flame to form a pilot flame, whereinthe ignition pilot burner is arranged upstream of a swirl generator and synthesis gas is supplied through the second fuel passage such that the pilot flame is removed from the region of the swirl generator,wherein removal is effected by reducing the calorific value of the synthesis gas supplied through the second fuel passage in such a manner that a flow seed of the synthesis gas is set, which is significantly higher than the flame speed,wherein the calorific value is reduced by diluting the synthesis gas with an inert medium,wherein only the second fuel passage is charged with synthesis gas in the initial phase,wherein the second fuel passage is charged with synthesis gas during the start phase,wherein during the initial phase a continuously increasing mass flow of synthesis gas is supplied to the second fuel passage to a maximum burner power achievable over the second fuel passage,wherein an inert medium is mixed with the synthesis gas to set a required calorific value, andwherein the proportion of inert medium in the synthesis gas is reduced continuously until the required calorific value is achieved.