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Boiler equipment capable of improving burn-off rate of pulverized coal and reducing NOx generation amount

A technology of boiler equipment and burnout rate, which is applied in the fields of clean coal combustion and low-carbon energy saving, and can solve problems such as meaninglessness

Pending Publication Date: 2021-02-23
付烜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Unless the logistics with installations in the factory area just need lower temperature preheating, it will be meaningless to continue to add flue gas heat exchange equipment to collect the waste heat of low temperature flue gas

Method used

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  • Boiler equipment capable of improving burn-off rate of pulverized coal and reducing NOx generation amount
  • Boiler equipment capable of improving burn-off rate of pulverized coal and reducing NOx generation amount
  • Boiler equipment capable of improving burn-off rate of pulverized coal and reducing NOx generation amount

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Embodiment Construction

[0011] For a clearer understanding of the technical content of the present invention, the following figure 1 Take the proposed plan as an example for illustration:

[0012] figure 1 According to the transformation plan of a kind of boiler with tangential combustion at four corners according to the idea of ​​the present invention, the object of specific investigation is a 330MW pulverized coal boiler with tangential combustion at four corners, which adopts π-shaped layout and staged combustion.

[0013] A is where the water-cooled wall of the front and rear walls of the boiler is turned to the outside of the furnace. As can be seen from the partially enlarged detailed drawing A, the entire water-cooled wall is turned out to the outside of the furnace by a distance of 800mm, and then connected to the water-cooled wall of the cold ash hopper. 1 is an isolation bellows, which is an air injection component. The width of the front and rear walls of the four-corner tangential boil...

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Abstract

The invention discloses boiler equipment capable of improving the burn-off rate of pulverized coal and reducing the NOx generation amount. On the basis of a four-corner tangential combustion type industrial coal-fired boiler, the structure of a water cooling wall is improved by selecting the position between a cold ash hopper and a main combustion area, an air injection component is additionally arranged and used for injecting air with the proper temperature and flow into a hearth at the optimized injection speed and the optimal angle, the burn-off rate of the pulverized coal can be improved,and the NOx generation amount can be reduced. The newly-added air injection component is not only suitable for a newly-built boiler, but also has the advantages of being short in transformation period, small in investment and high in economic return when used for transformation of an old boiler.

Description

technical field [0001] The invention relates to the fields of clean coal combustion and low-carbon energy saving, specifically a method for improving the burnout rate of pulverized coal while reducing NO x Boiler equipment that generates volume. The boiler equipment has been improved on the basis of the four-corner tangential combustion type, and can be applied to new boilers in coal-fired power plants, new self-contained coal-fired boilers in petrochemical and other non-electric industries, or efficiency improvement of existing boiler equipment. Background technique [0002] The advantage of the four-corner tangential combustion type of the boiler is that it can realize the staged air supply of the air and the staged combustion of the fuel. It has a good furnace fullness and can promote the mixing of the primary air and the secondary air. They collide with each other and fall off to intensify combustion, and at the same time, a rotating flame is formed in the furnace, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C7/00F23L1/00F23L7/00F23M5/08
CPCF23C7/00F23L1/00F23L7/007F23M5/08Y02E20/34
Inventor 付烜
Owner 付烜
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