Concentrated low-nitrogen dual channel swirl burner with central air

A low-nitrogen burner, concentrated technology, which is applied to burners, burners, combustion methods and other directions of burning powder fuel, can solve the problem of coking, boiler fly ash and large slag carbon content increased, poor combustion structure, etc. question

Pending Publication Date: 2021-05-11
TRANSTEK IND HK LTD KOWLOON
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  • Description
  • Claims
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Problems solved by technology

Some of the bituminous coal-fired power plants began to burn lignite in a large proportion in order to reduce fuel costs. As a result, the primary air rate of the burner was much higher than the design value, the ratio of secondary air to primary air was out of balance, and the combustion organization was not good. , resulting in the increase of carbon content in boiler

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  • Concentrated low-nitrogen dual channel swirl burner with central air
  • Concentrated low-nitrogen dual channel swirl burner with central air
  • Concentrated low-nitrogen dual channel swirl burner with central air

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[0033] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0034] It should be understood that terms such as "having", "comprising" and "including" as used herein do not assign the presence or addition of one or more other elements or combinations thereof.

[0035] like figure 1 , 2 As shown in and 3, the present invention provides a concentrated type double-adjusted air swirl low-nitrogen burner with central air, including:

[0036] One end of the double air-adjusting swirl nozzle area is connected to the combustion furnace. The double air-adjusting swirl nozzle area includes a central air channel 1, a primary air channel 3, an inner secondary air channel 5 and The outer secondary air channel 6, and the central air channel 1 and the primary air channel 3 are respectively provided with their own air volume adjustment valves, and the ...

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Abstract

The invention discloses a concentrated low-nitrogen dual channel swirl burner with central air. The burner comprises a dual channel swirl nozzle area with one communicating with a combustion furnace and comprising a central air channel, a primary air channel, an inner secondary air channel and an outer secondary air channel which are sequentially sleeved from inside to outside, an exhaust air channel with one end further communicating with the combustion furnace, and further provided with an air volume adjusting valve, and a pulverized coal concentration part, wherein a common inlet of pulverized coal primary air is formed in one end of the pulverized coal concentration part, and the other end of the pulverized coal concentration part communicates with the other ends of the primary air channel and the exhaust air channel separately. The burner disclosed by the invention is high in adaptability across coal types, high in combustion efficiency, good in stable combustion effect, good in low-nitrogen effect and good in anti-coking performance, and the win-win of environment and economic benefits is achieved.

Description

technical field [0001] The invention belongs to the technical field of burners, and relates to a concentrated double-air swirl low-nitrogen burner provided with central air. Background technique [0002] With the changes in the national power and coal market, in order to improve the economic benefits of enterprises, all power plants are committed to finding relatively cheap coal sources, so there is a phenomenon that the actual coal quality deviates from the design coal quality. Some of the bituminous coal-fired power plants began to burn lignite in a large proportion in order to reduce fuel costs. As a result, the primary air rate of the burner was much higher than the design value, the ratio of secondary air to primary air was out of balance, and the combustion organization was not good. , resulting in the increase of carbon content in boiler fly ash and large slag, the increase of NOx emission value at the outlet of economizer, the increase of CO emission value, the burni...

Claims

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Application Information

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IPC IPC(8): F23D1/02
CPCF23D1/02F23D2900/01001
Inventor 王颖张庆侯丙军
Owner TRANSTEK IND HK LTD KOWLOON
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