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Combustion head and alcohol-based low-nitrogen combustion device

A combustion head and combustion chamber technology, applied in the direction of burners, combustion chambers, combustion ignition, etc., can solve the problem of non-compliance of flue gas nitrogen oxide emissions, to ensure ignition stability and reliability, realize variable load regulation, Effects for special needs

Pending Publication Date: 2019-08-02
XIAN AEROSPACE SOURCE POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a combustion head and an alcohol-based low-nitrogen combustion device, which overcomes the defect that the discharge of nitrogen oxides in flue gas at the tail of the existing boiler does not meet the standard

Method used

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  • Combustion head and alcohol-based low-nitrogen combustion device
  • Combustion head and alcohol-based low-nitrogen combustion device
  • Combustion head and alcohol-based low-nitrogen combustion device

Examples

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Embodiment 1

[0043] Such as Figure 1 to Figure 7 As shown, the present embodiment provides a combustion head, which includes a cylindrical housing 1, in which there are: a fuel supply pipe 2 arranged axially along the housing 1, and a fuel supply pipe 2 arranged at the end of the fuel supply pipe 2. The fuel nozzle unit 3, the cylindrical swirler 4 sleeved outside the end of the fuel supply pipe 2, and the expansion section 5, the central combustion chamber 6, the narrowing section 7 and the The mouth cone section 8; the expansion section 5 and the mouth cone section 8 are both cone-shaped structures, the necking end of the expansion section 5 is connected to the cyclone 4, and the necking end of the mouth cone section 8 is connected to the shrinking section 7 connected, and cooling holes 51 and electrode installation holes 52 are provided on the expansion section 5, and a plurality of through holes 81 distributed in the circumferential direction are provided on the mouth cone section 8; ...

Embodiment 2

[0055] Such as Figure 1 to Figure 9 As shown, this embodiment provides an alcohol-based low-nitrogen combustion device, including an air supply system 100, a fuel supply system 200 located at the air inlet of the air supply system 100, and a programmer 300 for controlling the air supply system 100 and the fuel supply system 200 ; Also includes the combustion head 400 in Embodiment 1, the connection end of the casing of the combustion head 400 and the air outlet of the air supply system 100 are in sealed communication through the variable diameter pipe 500 .

[0056] Specifically, both ends of the variable-diameter pipe 500 are in detachable and sealed communication with the casing connection end of the combustion head 400 and the air outlet of the air supply system 100 respectively through flanges, and the flange connections are fixed by a number of screws evenly distributed around the circumference. The outer diameter of the combustion head 400 can be docked with any size of...

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Abstract

The invention discloses a combustion head and an alcohol-based low-nitrogen combustion device. The combustion head comprises a barrel-shaped shell. A fuel supply pipeline axially arranged along the shell, a fuel sprayer unit arranged in the end of the fuel supply pipeline, a barrel-shaped cyclone sleeving the end of the fuel supply pipeline, an expansion section, a center combustion chamber, a reducing section and an opening conical section are arranged in the shell. The expansion section, the center combustion chamber, the reducing section and the opening conical section are axially arrangedin the axial direction of the shell and communicate in a sealed manner. The expansion section and the opening conical section are both of a conical-barrel-shaped structure, the necking-down end of theexpansion section is connected with the cyclone, the necking-down end of the opening conical section is connected with the reducing section, cooling holes and electrode mounting holes are formed in the expansion section, and multiple through holes distributed circumferentially are formed in the opening conical section. The internal diameter of the reducing section is smaller than that of the center combustion chamber. Cooling holes are formed in the center combustion chamber, and multiple sets of inclined through holes distributed circumferentially are formed in the reducing section. Air classification is adopted, the low-pressure RQL combustion chamber and a fuel-rich-quenching-lean-burn organization structure are formed, and emissions of nitrogen oxides are reduced.

Description

technical field [0001] The invention belongs to the technical field of boiler ignition and combustion, and in particular relates to a combustion head and an alcohol-based low-nitrogen combustion device. Background technique [0002] At present, my country has become the second largest oil consumer in the world. The huge consumption of oil due to the rapid economic development has resulted in rising oil prices. The operating costs of oil-fired boilers are becoming more and more unbearable for users. Some oil-fired boiler users are looking for alternatives sex fuel. Alcohol-based fuel is a clean and economical green fuel. At present, many factories that produce alcohol-based fuel have started oil-to-alcohol-based fuel projects. The oil-based alcohol-based fuel combustion technology has become a new direction. Alcohol-based fuel burners have become a key link in boiler ignition and one of the key equipment for liquid fuel boilers. The technical difficulties of boiler ignition o...

Claims

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Application Information

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IPC IPC(8): F23C3/00F23C6/04F23D11/36F23D11/38F23D11/40F23K5/02F23Q3/00
CPCF23C3/002F23C6/04F23D11/36F23D11/383F23D11/38F23D11/406F23D11/40F23K5/02F23Q3/00F23C2201/20F23K2300/206
Inventor 余春杨伟东马成李碧云周鹏飞陈良奇
Owner XIAN AEROSPACE SOURCE POWER ENG CO LTD
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