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A pre-chamber combustion device for co-combusting low-volatile solid fuel

A solid fuel, low volatile technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve problems such as high emissions and difficult to stabilize combustion, and achieve the effects of reducing NOx emissions, promoting mixing, and improving the degree of burnout

Active Publication Date: 2022-03-01
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention aims to solve the problem that the existing combustors are difficult to use low volatile solid fuel, difficult to stabilize combustion and NO x To solve the problem of high emissions, a pre-chamber combustion device for co-combusting low-volatile solid fuels is proposed

Method used

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  • A pre-chamber combustion device for co-combusting low-volatile solid fuel
  • A pre-chamber combustion device for co-combusting low-volatile solid fuel
  • A pre-chamber combustion device for co-combusting low-volatile solid fuel

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specific Embodiment approach 1

[0028] Specific implementation mode one: combine Figure 1 to Figure 6 Describe this embodiment, the combustion device described in this embodiment includes a swirl burner and a pre-combustion chamber 7, the pre-combustion chamber 7 is arranged on the boiler 8, the swirl burner includes a high volatile solid fuel assembly and a plurality of The low-volatile solid fuel assembly, the high-volatile solid fuel assembly is installed on the side wall of the pre-chamber 7, and a plurality of low-volatile solid fuel assemblies are evenly distributed on the outer wall of the pre-chamber 7 along the circumferential direction .

specific Embodiment approach 2

[0029] Specific implementation mode two: combination figure 1 Describe this embodiment. The high volatile fixed fuel assembly described in this embodiment includes a high volatile fixed fuel powder feeding pipe 1, an inner secondary air pipe 2 and a plurality of inner secondary air blades 5. The high volatile fixed fuel powder feeding The pipe 1 and the inner secondary air pipe 2 are arranged on the left side wall of the pre-combustion chamber 7 from the inside to the outside, and a plurality of inner secondary air blades 5 are installed in the inner secondary air pipe 2 along the circumferential direction.

[0030] Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0031] Specific implementation mode three: combination figure 1 and figure 2 Describe this embodiment, each of the low-volatile solid fuel components in this embodiment includes a low-volatile solid fuel powder feeding pipe 3, an external secondary air pipe 4, and a plurality of external secondary air blades 6, and the low-volatile solid fuel The powder feeding pipe 3 and the outer secondary air pipe 4 are sequentially installed on the outer wall of the pre-combustion chamber 7 from the inside to the outside, and a plurality of secondary air blades 6 are installed in the outer secondary air pipe 4 along the circumferential direction.

[0032] Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

A pre-chamber combustion device for co-combusting low-volatile solid fuels. The invention relates to a combustion device. x The problem of high emissions, the present invention includes a swirl burner and a pre-chamber, the pre-chamber is arranged on the boiler, the swirl burner includes a high volatile solid fuel assembly and a plurality of low volatile solid fuel assemblies, the The high-volatility solid fuel assembly is installed on the side wall of the pre-combustion chamber, and a plurality of low-volatile solid fuel assemblies are evenly distributed on the outer wall of the pre-combustion chamber along the circumferential direction. The high-volatile solid fuel is first burned in the pre-combustion chamber, and a high-temperature flame is formed in the pre-combustion chamber to ignite the low-volatile solid fuel. The secondary air outside the swirling flow can increase the mixing degree between the airflow in the pre-combustion chamber and the fuel particles, ensuring low Volatile solid fuels ignite quickly, increasing the burnout rate of low volatile solid fuels.

Description

technical field [0001] The invention relates to a combustion device, in particular to a pre-chamber combustion device for co-combusting low-volatile solid fuel and high-volatile solid fuel, and belongs to the technical field of boilers. Background technique [0002] Power station boilers are still the main source of electricity in my country. In 2019, the national power generation was 7,325.3 billion kwh, of which the cumulative power generation of thermal power units was 5,045 billion kwh, accounting for about 72.79% of the country's cumulative power generation. In 2019, the national installed capacity of power generation was about 2 billion kilowatts, a year-on-year increase of about 5.5%, and the power generation of coal-fired units accounted for more than 80% of thermal power generation. Industrial boilers are the main coal-consuming equipment in my country other than power plant boilers, with an annual coal consumption of nearly 640 million tons. At present, industrial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C3/00F23L9/00
CPCF23C3/008F23L9/00
Inventor 陈智超乔彦宇郑玉袁琳璇曾令艳李争起
Owner HARBIN INST OF TECH