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Combustion device with ultra-low deviation equivalence ratio and combustion method

A combustion device and combustion method technology, applied in the direction of combustion method, combustion type, combustion equipment, etc., can solve the problems of increased gas pressure requirements, reduced boiler efficiency, increased fan power consumption, etc.

Inactive Publication Date: 2020-10-16
BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These two treatment methods either cause a reduction in boiler efficiency, or increase fan power consumption and increase gas pressure requirements

Method used

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  • Combustion device with ultra-low deviation equivalence ratio and combustion method
  • Combustion device with ultra-low deviation equivalence ratio and combustion method

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Embodiment Construction

[0028] Various exemplary embodiments, features, and aspects of the invention will be described in detail below with reference to the accompanying drawings. It should be noted that the relative arrangements of components, numerical representations and numerical values ​​described in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. It should be noted that the following embodiments do not limit the scope of the invention described in the claims, and not all combinations of features described in these embodiments are essential to the invention.

[0029] According to the embodiment of the present invention, an ultra-low nitrogen combustion device deviated from the equivalence ratio is proposed. Such as figure 1 and figure 2 As shown, the deviation from equivalence ratio ultra-low nitrogen combustion device of the present invention includes: a primary fuel passage 1, which is located at the center of the deviation from the eq...

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Abstract

The invention relates to a combustion device with the ultra-low deviation equivalence ratio and a method. The device comprises a primary fuel channel which is located at the central position of the combustion device with the ultra-low deviation equivalence ratio, a primary air channel which surrounds the primary fuel channel and is coaxial with the primary fuel channel, a secondary air channel which is located on the radial outer side of the primary air channel and is coaxial with the primary air channel and a secondary fuel channel which comprises a plurality of pipelines which are arranged in the secondary air channel and are uniformly distributed around the primary fuel channel; the primary fuel channel and the primary air channel are arranged in a manner that the primary air flow is excessive relative to the primary fuel injection amount, so that low-oxygen-concentration combustion-supporting air is generated through combustion; the secondary fuel channel and the secondary air channel are arranged in a manner that the secondary fuel injection amount is excessive relative to the secondary air flow, and therefore low-calorific-value secondary fuel is generated through combustion.The device is further provided with a burnout area for mixed combustion of low-oxygen-concentration combustion-supporting air and low-calorific-value secondary fuel.

Description

technical field [0001] The invention relates to the technical field of gas clean combustion, in particular to an ultra-low nitrogen combustion device and a combustion method deviated from the equivalence ratio. Background technique [0002] Nitrogen oxides (NOx) produced during gas combustion are one of the main air pollutants, and the country's emission limits for nitrogen oxides are increasingly tightened. In recent years, the mainstream flue gas external circulation (FGR) low nitrogen burner can basically meet the emission of 30mg / Nm 3 However, the flue gas external circulation type low-nitrogen burner needs the flue gas external circulation to account for about 15-20% of the total flue gas volume, reducing the boiler efficiency by 2%-4%, resulting in energy waste, and there is no further The ability to reduce nitrogen oxides cannot meet the tightening expectations of national policies. The flue gas internal circulation (FIR) low-nitrogen burner has also been developed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C7/00F23C5/08
CPCF23C7/00F23C5/08
Inventor 杨占春陈敏郭行石大凯徐平刘锦龙潘涛
Owner BEIJING LONGTAO ENVIRONMENTAL TECH CO LTD
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