Burner for combustion of a low-calorific fuel gas and method for operating a burner

A burner, low calorific value technology, applied in combustion methods, burners, combustion chambers, etc., can solve the problem of difficult to achieve good mixing of combustion air and syngas, avoid flashback, reduce pressure loss, improve The effect of spatial uniformity
CN101040149AInactive Publication Date: 2007-09-19SIEMENS AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SIEMENS AG
Publication Date
2007-09-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a burner (1), for the combustion of a low-calorific fuel gas (SG), with an air channel (2), running along a burner axis (12), for the introduction of combustion air (10) and a fuel gas channel (26), embodied for a high volumetric flow of low-calorific fuel gas (SG), whereby the fuel gas channel (26) and the air channel (2) open out into a mixing region (27). According to the invention, a low-nitrogen oxide synthesis gas operation of the burner (1) may be achieved, whereby a swirl element (4) is arranged in the air channel (2) for the generation of turbulent combustion air (10). The swirling element is provided in an opening region (28) directly adjacent to the flow of the mixing region (27). The invention further relates to a method of operation of a synthesis gas burner (1), whereby, directly before the mixing of the synthesis gas (SG) with the combustion air (10), the level of turbulence of the mass air flow is significantly increased on the microscopic level and a temporally and spatially homogenous mixing of the synthesis gas / air mixture is achieved.
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Description

technical field

[0001] The invention relates to a burner for burning gas with low calorific value, which has an air channel extending along the axis of the burner for conveying combustion air and a gas channel designed to allow the passage of low calorific gas with a large volume flow channels, wherein both the gas channel and the air channel lead to a mixing zone.

[0002] Furthermore, the invention relates to a method of operating a burner in which a fossil fuel is gasified, the gasified fossil fuel being fed to said burner as low calorific value synthesis gas and mixed with combustion air to produce synthesis gas -Air mixture and combustion takes place in the combustion space. Background technique

[0003] EP 0956475 B1 discloses a burner for burning high calorific value fuels such as natural gas or oil, which enables a largely homogeneous mixing of the high calorific value fuel and combustion air. For this purpose, a vortex generating element is installed inside the an...

Claims

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