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A pulverized coal decoupling burner and combustion method with enhanced diversion and enrichment

A burner and dense coal powder technology, applied in the direction of combustion methods, burners for burning powder fuel, burners, etc., can solve the problem of reducing the concentration effect of pulverized coal airflow, reducing the service life of burners, and affecting decoupling combustion efficiency problems such as reducing coal segregation and coking, improving the service life of equipment, and reducing wear and tear

Active Publication Date: 2019-08-30
SHANXI SANHESHENG IND TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the extrusion of the airflow by the powder collector and flame stabilizer and produce a higher super-concentration effect, the powder collector of the burner has a larger inclination angle of the powder collecting surface of the powder collector and flame stabilizer. However, the excessive inclination angle of the powder collector and flame stabilizer will inevitably cause Accelerated wear of the powder collecting surface reduces the service life of the burner
In addition, the airflow on the rich powder side of the burner is continuously deflected to the light powder side by being squeezed by the powder collector flame stabilizer, causing the deflected airflow on the rich side at the outlet of the burner to bring part of the pulverized coal into the light powder side, thereby reducing the pulverized coal airflow The concentration effect of pulverized coal affects the efficiency of decoupling combustion

Method used

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  • A pulverized coal decoupling burner and combustion method with enhanced diversion and enrichment
  • A pulverized coal decoupling burner and combustion method with enhanced diversion and enrichment
  • A pulverized coal decoupling burner and combustion method with enhanced diversion and enrichment

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Embodiment Construction

[0048] The following are examples of the present invention, which are only used to explain the present invention and not limit it.

[0049] The present invention provides a pulverized coal decoupling burner with enhanced diversion and enrichment. The burner includes a nozzle 1, a thick-lean diversion plate 2, an upper powder collector flame stabilizer 9, a lower powder collector flame stabilizer and a middle powder collector flame stabilizer 6;

[0050] The thick-lean divider 2 is arranged in the middle of the spout 1, and the upper and lower ends of the thick-thin divider 2 are connected to the outer shell of the spout 1; 7 and two airflow passages of the rich side airflow 8;

[0051] The upper powder-collecting flame stabilizer 9, the lower powder-collecting flame stabilizer 5 and the middle powder-collecting flame stabilizer 6 are located at the passage side of the air flow 8 on the concentrated side; the upper powder-collecting flame stabilizer 9, the lower powder-collect...

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Abstract

The invention discloses a braize decoupling combustor for improving flow division performance and concentration and a combustion method based on the combustor. The combustor comprises a nozzle, a thick flow and thin flow partition board, an upper braize collecting flame holder, a lower braize collecting flame holder and a middle braize collecting flame holder. By arranging the middle braize collecting flame holder, the angle of inclination of braize collecting slopes of the braize collecting flame holders can be reduced under the same airflow space compression rate, so that abrasion to the braize collecting flame holders is reduced, the service life of the combustor is prolonged, braize segregation and coking of a combustor outlet can also be reduced, and the effect of decoupling combustion is improved.

Description

technical field [0001] The invention relates to the field of pulverized coal combustion equipment, in particular to a pulverized coal decoupling burner and a combustion method that enhance diversion and enrichment. Background technique [0002] In the process of pulverized coal combustion, high temperature oxygen enrichment is beneficial to improve the combustion efficiency, but at the same time it will increase the NO produced in the combustion process x ; Conversely, low temperature and low oxygen are beneficial to suppress NO x generation, but pulverized coal is less likely to burn out. Elimination of pulverized coal combustion efficiency and NO x The coupling of emissions is a long-standing technical difficulty in the field of pulverized coal combustion. [0003] The coal used in my country's thermal power plants, low-quality coal or low-volatile coal accounts for a large proportion. In the process of burning this type of coal, there are a lot of problems such as unst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00F23K3/02
Inventor 郝江平王菁娄慧如赵康闫跃文
Owner SHANXI SANHESHENG IND TECH
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