Method for controlling burning state of coal powder boiler fire

A technology of combustion state and control method, applied in the direction of combustion method, control combustion, lighting and heating equipment, etc., can solve the problems of slow adjustment process, difficult air distribution operation, and high adjustment frequency, and achieve uniform heating, appropriate distance, increase The effect of heat exchange efficiency

Inactive Publication Date: 2005-10-19
柴庆宣
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for controlling the fire and combustion state of pulverized coal boilers with accurate and fast adjustment of air di...

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  • Method for controlling burning state of coal powder boiler fire
  • Method for controlling burning state of coal powder boiler fire

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specific Embodiment approach 1

[0006] Specific embodiment one: below in conjunction with Fig. 1 to image 3 This embodiment will be specifically described. The system of this embodiment consists of a total air door 1, a total air volume measuring device 2, a tertiary air door 3, a pulverizing device 4, a pulverizing air pressure measuring device 7, a pulverized coal furnace 5, several secondary air doors 11, and several air volume measuring devices. 12 and a number of nozzles 13, one end of the main damper 1 is connected to one end of the total air volume measuring device 2, and the other end of the total air volume measuring device 2 is connected to one end of the tertiary damper 3 and one end of all secondary dampers 11, and the tertiary damper 3 The other end of the pulverizing wind pressure measuring device 7 is connected to one end of the pulverizing wind pressure measuring device 7, the other end of the pulverizing wind pressure measuring device 7 is connected to one end of the pulverizing device 4, an...

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Abstract

The control method of burning state in coal powder boiler includes the following steps: setting the value Sp of oxygen content in boiler fume exhaust; measuring the practical oxygen content Pv in furnace fume, calculating the deviation E1 between Sp and Pv, and calculating the given value of total secondary blast based on the outer loop controller; judging whether the powder making apparatus is running; if 'yes', distributing the total secondary blast value to the fire nozzles in the first proportion; if 'no', distributing the total secondary blast value to the fire nozzles in the second proportion; and regulating the secondary blast gates to track the given blast amount. The method can distribute blast accurately, fast and automatically.

Description

Technical field: [0001] The invention relates to a control method of a pulverized coal boiler used in a thermal power plant. Background technique: [0002] The air distribution of the pulverized coal boiler (total air supply, primary air, secondary air, and tertiary air) directly affects the state of the combustion in the furnace, that is, the shape, vertical position, horizontal position of the combustion and the tangent circle of the cross-section of the combustion The size of the diameter. In order to keep the boiler in the best combustion state, it is theoretically required that when the boiler is running, the shape of the flame should be a rotating tangent circle, the ignition point should be kept at an appropriate distance from the burner, the horizontal position of the flame combustion center is on the central axis of the furnace, and the vertical The location remains the same. Therefore, when adjusting the boiler load or changing the operating conditions of the boi...

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Application Information

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IPC IPC(8): F23N3/00F23N3/06F23N5/00
Inventor 柴庆宣
Owner 柴庆宣
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