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An air-fuel multi-layer three-dimensional grading low nitrogen gas burner

A gas burner and gas fuel technology, which is applied to gas fuel burners, burners, combustion types, etc., can solve problems such as poor effect, and achieve the effects of reducing emissions, improving combustion efficiency, and suppressing NOx generation.

Active Publication Date: 2022-07-19
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the burners using this gas fuel are still graded by traditional low-nitrogen technology, and the effect is not good.

Method used

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  • An air-fuel multi-layer three-dimensional grading low nitrogen gas burner
  • An air-fuel multi-layer three-dimensional grading low nitrogen gas burner
  • An air-fuel multi-layer three-dimensional grading low nitrogen gas burner

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Experimental program
Comparison scheme
Effect test

Embodiment

[0042] like figure 1 , figure 2 , Figure 3 (a), Figure 3 (b), Figure 4 (a) and Figure 4 (b), the air-fuel multi-layer three-dimensional grading low nitrogen gas burner of this embodiment includes a sequence of distribution from the inside to the outside. The central fuel gun 10, the central air cylinder 4, the inner primary fuel gun 11, the inner swirl air outer cylinder 3, the outer primary fuel gun 12, the outer straight air outer cylinder 2, the secondary fuel gun 13 and the outer secondary air outer cylinder 1 . Among them, a central air channel 8 is formed between the central fuel gun 10 and the central air cylinder 4, an annular inner swirl wind area is formed between the central air duct 4 and the inner swirl air outer cylinder 3, and the inner swirl air outer cylinder 3 and the outer straight air are formed. An annular DC air area 6 is formed between the outer cylinders 2, and the outer DC air outer cylinder 2 and the outer secondary air outer cylinder 1 form an ann...

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Abstract

The invention discloses an air-fuel multi-layer three-dimensional grading low-nitrogen gas burner. The annular cavity between the cavity, the outer cylinder of the outer direct air and the outer cylinder of the outer secondary air can form a four-stage combustion-supporting gas, and the gas fuel sprayed by the central fuel gun, the inner primary fuel gun, the outer primary fuel gun and the secondary fuel gun can Mixing with the above-mentioned four-stage combustion-supporting gas, on the one hand, it can realize the oxygen-deficient and oxygen-enriched combustion mode in the central area of ​​the combustion end of the entire burner, reducing the degree of fuel accumulation in the central area and the intensity of the initial combustion, thereby reducing the combustion temperature. On the other hand, while the fuel is diffused to the outer ring for combustion as much as possible, the direct and swirling wind is arranged in the center, which ensures the flame mixing stability in the central area, improves the combustion efficiency, and reduces the emission of nitrogen oxides. .

Description

technical field [0001] The invention belongs to the technical field of ultra-low nitrogen clean combustion, and relates to an air-fuel multi-layer three-dimensional grading low-nitrogen gas burner. Background technique [0002] In recent years, the demand and price of energy have been rising, while the energy supply is relatively tight. The problem of energy shortage is becoming more and more obvious. At the same time, global environmental problems are becoming more and more prominent, such as climate warming, acid rain and photochemical smog. Attention, at present, the world's energy supply mainly depends on fossil energy. Combustion is the main way of energy conversion. It converts the chemical energy of fuel into thermal energy. The energy obtained by burning fossil fuels accounts for more than 90% of the world's total energy consumption. The task of energy conservation and emission reduction is arduous. [0003] Gas fuel has the characteristics of high combustion effici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/02F23D14/46F23D14/60F23D14/62F23D14/70
CPCF23D14/02F23D14/46F23D14/60F23D14/62F23D14/70Y02E20/34
Inventor 姬海民薛宁张知翔徐党旗韩键平温寒健
Owner XIAN THERMAL POWER RES INST CO LTD