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A kind of high temperature smokeless boiler and combustion method

A combustion method and high-temperature technology, applied in high-temperature gasification smokeless furnaces, high-temperature smokeless boilers and combustion fields, can solve the problems of high nitrogen oxides at the boiler outlet, high smoke and dust emissions, increased boiler operating costs, and low thermal energy utilization. Achieve remarkable energy saving effect, improve heat energy release efficiency, and high heat energy utilization rate

Active Publication Date: 2020-12-18
刘振亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reducing nitrogen oxide emissions has become a major problem for coal-fired boilers to cleanly utilize coal. Now ultra-low emission nitrogen oxides require 50mg / Nm 3 , from 400mg / Nm 3 down to 50mg / Nm 3 Very difficult, requires multipolar treatment, and uses a lot of drugs to achieve the goal
Increased boiler operating costs and created new pollution
[0005] In the process of realizing the present invention, the inventor found that the prior art has at least the following deficiencies: insufficient combustion, high emissions of nitrogen oxides and smoke at the boiler outlet, polluting the environment, and low utilization rate of heat energy

Method used

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  • A kind of high temperature smokeless boiler and combustion method
  • A kind of high temperature smokeless boiler and combustion method

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Experimental program
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Effect test

Embodiment 1

[0050] Example 1, such as figure 1 , 2As shown, a high-temperature smokeless boiler includes a combustion chamber and a fire grate 2, and the fire grate 2 is arranged at the lower part of the combustion chamber; the combustion chamber includes a main combustion chamber 1 and an auxiliary combustion chamber 3, and the auxiliary combustion chamber 3 is arranged in the main combustion chamber 1 on the coal inlet side. The main combustion chamber 1 and the auxiliary combustion chamber 3 are set relatively independently, and can also be integrated. In this embodiment, the auxiliary combustion chamber 3 and the main combustion chamber 1 are set relatively independently.

[0051] A baffle plate 4 is arranged between the auxiliary combustion chamber 3 and the main combustion chamber 1, and communicates with each other through the baffle plate 4. The baffle plate 4 makes the auxiliary combustion chamber 3 form a semi-closed state, and the baffle plate 4 can be used to turn the auxilia...

Embodiment 2

[0057] Embodiment 2, on the basis of embodiment 1, the bottom end of the fire grate at the bottom of the main combustion chamber 1 is also provided with a lower spraying device, which can also be realized to be the same or even the same as that at the bottom of the fire grate at the bottom of the auxiliary combustion chamber 3. Better technical effects.

[0058] The bottom of the fire grate 2 corresponding to the lower part of the main combustion chamber 1 can also be provided with a lower air supply device 13 , and at this time, the lower spraying devices 12 and the lower air supply devices 13 are arranged in a staggered manner.

Embodiment 3

[0059] Embodiment 3, on the basis of Embodiment 1 or / and Embodiment 2, an upper spraying device 14 is provided in the auxiliary combustion chamber 3 behind the air supply module along the fuel inlet direction, and it can also be realized with the lower part of the auxiliary combustion chamber 3. The bottom of the fire grate is provided with the same or even better technical effect of the lower spraying device 12.

[0060] The combustion method of the above coal-fired boiler burner includes a first combustion process and a second combustion process;

[0061] During the first combustion process:

[0062] The fuel is in the stage of coking and volatile release;

[0063] The fire grate carrying fuel is the low temperature section fire grate 15;

[0064] Fuel combustion is carried out in the auxiliary combustion chamber 3, and along the direction of fuel intake, there are three processes in sequence: low temperature zone, high temperature zone and gasification zone:

[0065] In ...

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Abstract

The invention discloses a combustion method of a high-temperature smokeless boiler. The method comprises a first combustion process and a second combustion process. According to the first combustion process, fuels are in a coke making and volatile component releasing stage; and according to the second combustion process, the fuels are in a coke firing stage, coke generated in the first combustionprocess starts combusting, two relatively independent and communicating combustion chambers enable fire coal to perform combustion primarily in the auxiliary combustion chamber, primary combustion ismade more thorough, the overall fire coal combustion efficiency and heat energy release efficiency can be improved easily, the air output is gradually increased in the fire coal inlet direction, formed air output airflow is stable, upper air output is not disturbed, reasonable amounts of air are fed into different areas, 20% of heat energy consumed during gasification is saved, processing fee is saved by 200 RMB yuan each ton, the concentration of nitric oxide at an outlet of the boiler is 150mg / Nm<3>, dust emission is reduced by 90%, the concentration of carbon monoxide is 150mg / Nm<3>, and the coal saving amount reaches 8%.

Description

technical field [0001] The invention relates to a high-temperature gasification smokeless boiler, in particular to a high-temperature smokeless boiler and a combustion method, belonging to the technical field of machinery. Background technique [0002] At present, more coal is added to the furnace of the combustion chamber of the vertical boiler, and then the coal is ignited from the upper part of the coal with a igniter. After the coal is ignited, it gradually gasifies and burns slowly downward. It is sent to the secondary combustion chamber for secondary combustion. Using this type of boiler to burn coal is sufficient and smokeless. However, it is necessary to change the coal after burning a furnace of coal, so the efficiency is relatively low and the continuity is poor; the air supply system adopts the downward air supply mode, which causes the flame of coal burning to be unable to keep continuous and strong, and the firepower is uneven during the combustion process. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23B10/02
CPCF23B10/02
Inventor 刘国田代吉发刘振亮
Owner 刘振亮
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