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Combustion method and system

A combustion system and burner technology, applied in the direction of combustion method, burner, combustion type, etc., can solve the problems of inability to quickly adjust operating parameters, optimal NOx reduction, etc.

Active Publication Date: 2008-03-12
CLEAN COMBUSTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that these devices do not or cannot quickly adjust operating parameters to adapt to changing operating conditions for optimal NOx reduction

Method used

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  • Combustion method and system
  • Combustion method and system
  • Combustion method and system

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Embodiment Construction

[0032] The following preferred embodiments of the invention are sometimes discussed in terms of coal combustion and air as the gaseous carrier and oxidant. The technique is applicable to any other pulverized solid fuel and any other gaseous carrier. The invention will be illustrated with the aid of the drawings, but the description with reference to the drawings is not intended to limit the scope of the invention.

[0033] 1 to 4 show a preferred embodiment of a swirl burner according to the invention. Certain embodiments of the combustor are described in more detail in FIGS. 4 and 5 . The invention also includes once-through burners in which the secondary flow and / or other flows are supplied into the combustion chamber in a once-through manner.

[0034] FIG. 1 shows a combustion system comprising a burner 3 and a combustion device 1 with a chamber 2 . The combustion device of the present invention may be any device within which combustion occurs. Typical combustion device...

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Abstract

A method for burning the powdered hydrocarbon fuel comprises the following procedures: injecting air / fuel current into the burner to generate the low pressure area; leading the high-temperature burning gas current from the burner to the low pressure area in the burner; mixing the high-temperature burning gas with the injected air / fuel current to heat the injected air / fuel current, and injecting the heated air / fuel current from the burner into the burning chamber, wherein the air / fuel current is rapidly devolatilized and is burned in the high-temperature flame; sensing the combustion parameter; and controlling the burning according to the sensed combustion parameter to get at least one goal of expected NOx reduction and expected distance from the burner to the flame front edge.

Description

technical field [0001] The present invention relates to a combustion method and combustion system for solid hydrocarbon fuels. Background technique [0002] Solid fossil fuels such as coal are important energy sources, especially for power generation. However, pollutants emitted by coal combustion are a major source of air pollution. Among the pollutants from coal combustion, nitrogen oxides (NOx) have attracted widespread attention. [0003] There are two basic sources of NOx produced during combustion: fuel NOx and thermal NOx. Fuel NOx is NOx formed during combustion due to the conversion of chemically bound nitrogen (fuel nitrogen). Fuel nitrogen (or coke-N) is released during several complex combustion processes. The main initial product of combustion is HCN or NH3. HCN is then oxidized to NO or reduced to N 2 . If the gas is an oxidant or the fuel is of low grade, NO will be the main product of fuel nitrogen. Reduction of HCN to N by CO or C (char) on char surf...

Claims

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Application Information

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IPC IPC(8): F23C1/00
CPCF23C2202/50F23N2041/10F23N2023/36F23N2039/02F23D1/00F23K1/04F23C2900/99004F23C9/00F23D2201/20F23N1/022F23C2900/09002F23D2900/01001F23N2021/12F23N2223/36F23N2221/12F23N2241/10F23N2239/02Y02E20/34F23C1/00
Inventor 贾臻曾桃芳贾晓光李星
Owner CLEAN COMBUSTION TECH
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