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Multi-angle impact atomization coal water slurry nozzle

An atomized water, multi-angle technology, applied in lighting and heating equipment, burners and other directions, can solve the problems of unfavorable atomization, large aerodynamic energy loss, long distance, etc., to achieve the effect of improving atomization effect and good combustion effect

Inactive Publication Date: 2012-05-23
BEIJING AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The multi-stage atomization pneumatic impact atomization path is longer, and the aerodynamic energy loss along the way is relatively large, which is not conducive to atomization

Method used

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  • Multi-angle impact atomization coal water slurry nozzle
  • Multi-angle impact atomization coal water slurry nozzle
  • Multi-angle impact atomization coal water slurry nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] like figure 1 As shown, the atomizer 3 is a Laval nozzle-shaped channel. In the figure, the end port of the atomizer 3 that is not connected to the atomization cover 5 converges, and the convergent end is the convergent section 8; the middle is the throat section 9; The diameter of the end of the atomizer 3 connected to the atomization housing 5 is enlarged, so this section is an outward expansion section 10 . The converging section of the atomizer 3 is fixedly connected to the coal-water slurry pipeline 1, and the coal-water slurry enters the atomizer 3 from the converging section 8, and there are three dynamic atomizing holes in the outer expansion section 10 of the atomizer 3 14. It can be seen from the figure that all the pneumatic atomization holes are connected to the inner cavity of the atomizer pipeline 2 and the inner...

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Abstract

The invention belongs to the field of combustion of coal water slurry and in particular relates to a multi-angle impact atomization coal water slurry nozzle, which comprises an atomizer; the atomizer is fixedly connected with an outer atomization cover; one end of the atomizer, which is connected with the outer atomization cover, is provided with atomization holes; a spraying hole is arranged in the outer atomization cover; because of the distribution of the atomization holes, coal water slurry is impacted and atomized in multiple angles; pneumatic impact and atomization are concentrated at the outlet of the atomizer and close to the spraying hole; the energy loss of an atomization agent is less; the atomization effect is beneficial to the increase; and, if the multi-angle impact atomization coal water slurry nozzle is tested on a 4-ton boiler, when the flow rate of the coal water slurry is 600 kg / h and the air amount is 3500 Nm<3> / h, the combustion effect is good and the smoke blackness Ringelmann grade is less than 1 under the condition of about 15% of air consumption rate.

Description

technical field [0001] The invention belongs to the field of coal-water slurry combustion, and in particular relates to a high-viscosity fuel atomization device. Background technique [0002] Coal water slurry is a new type of coal-based clean fuel developed in response to the oil crisis in the 1980s. Since coal water slurry is prepared from washed coal, its ash and sulfur content are low, and the control effect of sulfur dioxide emission is obvious. During the combustion process, the presence of moisture can reduce the temperature of the combustion flame center and inhibit the production of nitrogen oxides. In addition, coal-water slurry can be transported by pipelines and tankers, and there is no pollution during transportation and storage. As a fuel, coal water slurry has unique advantages such as cost saving and combustion control characteristics similar to fuel oil. Moreover, the production, preparation and combustion technology of coal water slurry is basically matu...

Claims

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Application Information

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IPC IPC(8): F23D11/38
Inventor 俞维根李易峰杨阳张枚
Owner BEIJING AEROSPACE PROPULSION INST
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