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Boiler combustion stabilizing device on basis of increasing temperature of stokehole pulverized coal gas flow

A technology of pulverized coal and combustion stabilization device in front of the furnace, which is applied to the burner, burner, combustion method and other directions of burning powder fuel, can solve the problems that the effect of intensified combustion cannot be applied, and the temperature adjustment range of pulverized coal gas flow is limited, etc. To achieve the effect of improving ignition and stable combustion ability, improving adaptability and improving stability

Active Publication Date: 2012-07-18
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Based on the above analysis and combined with the actual operation on site, it can be seen that although the temperature of air powder is an important factor affecting the combustion of pulverized coal, in actual operation on site, due to the safety and explosion-proof requirements of the pulverizing system, the adjustment range of the air flow temperature of pulverized coal is limited, so that the actual The effect of its enhanced combustion cannot be applied

Method used

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  • Boiler combustion stabilizing device on basis of increasing temperature of stokehole pulverized coal gas flow
  • Boiler combustion stabilizing device on basis of increasing temperature of stokehole pulverized coal gas flow
  • Boiler combustion stabilizing device on basis of increasing temperature of stokehole pulverized coal gas flow

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] like figure 1 As shown, a boiler stable combustion device based on increasing the pulverized coal airflow temperature in front of the furnace, it includes a pulverized coal airflow heating device 2 (air powder airflow heating device), and the pulverized coal airflow heating device 2 is installed in the pulverized coal airflow pipeline 5 (furnace On the pulverized coal airflow duct 5, the measuring elements 3, 4 for measuring the temperature of the pulverized coal airflow before and after the pulverized coal airflow heating device 2 are also installed, and the pulverized coal airflow heating device 2 and the measuring elements are both 3, 4 Connect with the display control device 1.

[0026] like figure 2 As shown, the pulverized coal airflow heating device 2 is an electric heating device. The pulverized coal airflow heating device 2 at least ...

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Abstract

The invention discloses a boiler combustion stabilizing device on the basis of increasing the temperature of stokehole pulverized coal gas flow. A pulverized coal combustion intensification theory is utilized, the boiler combustion stabilizing device is provided with a reasonable pulverized coal gas flow heating device, the temperature of the pulverized coal gas flow in a stokehole pulverized coal gas pipe is quickly increased, accordingly, volatile matters in pulverized coal are promoted to be dissolved, fire catching and combustion stabilizing capacities of the pulverized coal gas flow at an outlet of a combustor are improved, and fire coal applicability of a boiler is enhanced. The boiler combustion stabilizing device structurally comprises a pulverized coal gas flow pipeline, a pulverized coal gas flow heating device is mounted on a barrel of the pulverized coal gas flow pipeline, a measuring element which is used for measuring the temperature of the pulverized coal gas flow before and after the pulverized coal gas flow is heated by the pulverized coal gas flow heating device is further mounted on the barrel, and both the pulverized coal gas flow heating device and the measuring element are connected with a display control device.

Description

[0001] technical field [0002] The invention relates to a method for improving the stable combustion performance of a boiler and a device for heating air powder air flow temperature, in particular to a device for enhancing boiler stable combustion performance and coal type adaptability by increasing the pulverized coal air flow temperature. Background technique [0003] Pulverized coal combustion is an important power production method, and improving its combustion performance has very important social and economic significance. Because the actual coal types used in power plants often change, and the combustion characteristics of different coal types are quite different, so problems such as boiler coking and fire extinguishing often occur in power plant boilers, which in turn affect the safe and stable operation of generating units. According to the actual coal type, timely and appropriate combustion adjustment and optimization of pulverized coal combustion are the fundamen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00
Inventor 牛蔚然邱燕
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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