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Coal powder boiler

A pulverized coal boiler and pulverized coal technology, applied in the field of machinery, can solve the problems of inconvenient cleaning of ash and slag, etc.

Inactive Publication Date: 2016-11-30
HANGZHOU JUNENG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In existing pulverized coal boilers, ash often adheres to the side wall of the furnace or accumulates at the bottom of the furnace near the side wall of the furnace, and it is inconvenient to clean the ash and slag in the furnace

Method used

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Embodiment Construction

[0025] In order to further explain the technical means and effects of the present invention to achieve the intended purpose of the invention, the specific implementation, structure, features and effects of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0026] image 3 Shown is a schematic structural view of the pulverized coal boiler according to the first embodiment of the present invention. Figure 4 shown as image 3 A-A sectional view of the pulverized coal boiler. See image 3 , 4 , the pulverized coal boiler of the present embodiment includes a drum 1, a downcomer 2, a furnace 3, an air inlet 4, a lower header 5, a top header 6, a steam connecting pipe 7, an upper header 8, a high-temperature superheater 9, a low-temperature Superheater 10, convection tube bundle 11, downcomer 12, high temperature air preheater 13, high temperature economizer 15, low temperature economizer 16, low tem...

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Abstract

The invention relates to the mechanical field, in particular to a pulverized coal boiler. The present invention provides a pulverized coal boiler, which includes a furnace and burners for burning pulverized coal, the number of the burners is even, the burners are evenly located at the bottom of the furnace, and the burners are inclined towards the center of the furnace . In the pulverized coal boiler of the present invention, the number of the burners is even, the burners are evenly located at the bottom of the furnace, and the burners are inclined towards the center of the furnace. Burners inclined towards the center of the furnace, most of the ash produced by combustion moves towards the center of the furnace or towards the bottom of the furnace. Since a pair of burners are symmetrical to each other, the airflow of the two burners is balanced in the center of the furnace, so the ash The ash falls from near the center of the hearth as the inertia decreases. Therefore, the pulverized coal boiler of the present invention can reduce the fly ash attached to the side wall of the furnace or accumulated at the bottom of the furnace close to the side wall of the furnace.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a pulverized coal boiler. Background technique [0002] my country's energy structure is dominated by coal. For a long time in the future, coal-fired industrial boilers will still be the leading product of industrial boilers. [0003] The traditional industrial coal-fired boilers are mainly layer-fired boilers. The disadvantages are low combustion efficiency and serious pollution, which makes it difficult to meet the requirements of energy saving, emission reduction and pollutant discharge. Pulverized coal combustion is one of the efficient and clean combustion methods of coal, and its combustion efficiency can reach more than 96%. It is a mature combustion technology and is widely used in large-scale power plant boilers. [0004] figure 1 Shown is the structural schematic diagram of the first existing pulverized coal boiler. See figure 1 , the pulverized coal burner 23 is located at t...

Claims

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Application Information

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IPC IPC(8): F23C5/08
CPCF23C5/08
Inventor 徐慧周海能王改李盘威沈玉华苏晓奇
Owner HANGZHOU JUNENG BOILER
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