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Method for extracting overflowing property of combustor air distribution baffle from boiler operation data

A boiler operation and burner technology, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of time-consuming and laborious, many furnace cold ventilation test conditions, and high labor intensity, so as to improve combustion efficiency. , The effect of saving ignition start-up time and high labor intensity

Active Publication Date: 2018-11-06
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of secondary air distribution baffles and burner nozzles of large-capacity boilers, there are many cold-state ventilation test conditions in the furnace, the test of air volume or wind speed is time-consuming and labor-intensive, and labor-intensive; in order to facilitate the measurement of burner nozzle wind speed, The Chinese patent with the application number 201520265921.0 discloses a device for testing the characteristics of the secondary air baffle, which improves the measurement conditions of the nozzle wind speed to a certain extent, but the measurement items, test conditions and time-consuming and labor-intensive characteristics of the furnace cold ventilation test not substantially changed

Method used

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  • Method for extracting overflowing property of combustor air distribution baffle from boiler operation data
  • Method for extracting overflowing property of combustor air distribution baffle from boiler operation data
  • Method for extracting overflowing property of combustor air distribution baffle from boiler operation data

Examples

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Embodiment 1

[0102] A 300MW tangentially fired pulverized coal boiler adopts a direct-blowing pulverized coal system and is equipped with 5 medium-speed coal mills. The primary air from the outlet of the same coal mill is distributed to 4 fuel nozzles on the same floor. There are 5 floors in total. There are 20 fuel nozzles, from bottom to top, the fuel nozzles are marked as A, B, C, D, E layers in sequence; there are 19 layers of air nozzles, 4 in each layer, a total of 76; these 19 layers of air nozzles are divided into 6 categories: ①Secondary air of AA layer, located at the bottom; ②Auxiliary secondary air: 3 layers, namely CD, DE and EE layer secondary air; ③ Oil gun secondary air: 2 layers, AB and BC layer oil Gun secondary air; ④ Fuel nozzle perimeter secondary air: a total of 5 layers, namely A perimeter wind, B perimeter wind, C perimeter wind, D perimeter wind, E perimeter wind, ⑤ Adjacent secondary air, a total of 4 layers, namely BC, DE, EE and OFA layers are attached to the sec...

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Abstract

The invention discloses a method for extracting an overflowing property of a combustor air distribution baffle from boiler operation data. A special combustion chamber cold state ventilation test doesnot need to be performed, the ignition starting time of a boiler is shortened, and the manpower and material resources are saved; and an obtained resistance characteristic curve of the air distribution baffle can be used for measuring air flow of a combustor nozzle, so that the air distribution of the whole combustion chamber can be monitored and adjusted, the combustion efficiency of pulverizedcoal in the combustion chamber can be remarkably improved, and the generation of nitric oxide can be reduced.

Description

Technical field [0001] The invention belongs to the field of boiler burner operation monitoring and control, and in particular relates to a method for extracting the flow characteristics of the burner air distribution baffle from the boiler operation data. Background technique [0002] The flow characteristics of the boiler air distribution baffle refers to the corresponding relationship between its opening and the flow of air passing through. It is usually described by the change curve of the flow coefficient or the resistance coefficient with the opening. This flow or resistance characteristic curve is a characteristic of the resistance. The important data of plate adjustment performance not only determines the distribution and adjustment characteristics of the air flow into the furnace, but also can be used to measure the air flow of the burner nozzle, so as to monitor and adjust the air distribution of the entire furnace to improve the combustion of pulverized coal. Efficienc...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 刘福国崔福兴王守恩
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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