A boiler combustion optimization method and system based on on-line monitoring of air powder and CO

A technology for boiler combustion and optimization methods, which is applied in combustion methods, chemical instruments and methods, separation methods, etc., can solve the problems of not being able to reflect the combustion conditions in the furnace well, and the adjustment means is single, so as to avoid the boiler running inoperable. Stabilization, clear adjustment goals, and the effect of expanding the scope of optimization

Active Publication Date: 2021-11-19
HUAZHONG UNIV OF SCI & TECH
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  • Application Information

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Problems solved by technology

However, this method has a single adjustment method, and the tail CO cannot reflect the combustion situation in the furnace well.

Method used

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  • A boiler combustion optimization method and system based on on-line monitoring of air powder and CO
  • A boiler combustion optimization method and system based on on-line monitoring of air powder and CO
  • A boiler combustion optimization method and system based on on-line monitoring of air powder and CO

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0030] seefigure 1 and image 3 , the present invention provides a boiler combustion optimization method based on air powder and CO online monitoring, the method includes steps S1-S4.

[0031] The present invention takes a 600MW unit in a certain power plant as an example to elaborate. The boiler is a π-type front and rear wall-contrasting boiler equipped with 6 coal mills, and one coal mill is...

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Abstract

The invention belongs to the technical field of combustion optimization, and discloses a boiler combustion optimization method and system based on online monitoring of wind powder and CO. wind velocity and CO concentration; obtain the corresponding relationship between CO concentration and boiler operation comprehensive cost, primary air pulverized coal concentration, flow velocity, and secondary air damper opening matrix under multiple working conditions; CO concentration, primary air pulverized coal concentration, flow velocity threshold range and secondary air door opening optimization interval under working conditions; when the real-time monitored CO concentration or primary air pulverized coal concentration or primary air flow velocity is not within the corresponding threshold range , then adjust the primary air pulverized coal concentration, primary air velocity and / or secondary air damper opening matrix. The present invention realizes the precise adjustment of the combustion side of the boiler by monitoring the CO concentration on the boiler side and jointly adjusting the parameters of the primary air and the secondary air.

Description

technical field [0001] The invention belongs to the technical field related to combustion optimization, and more specifically relates to a boiler combustion optimization method and system based on air powder and CO online monitoring. Background technique [0002] In thermal power plants, the stability, safety and economy of boiler operation are regarded as the top priority in the generation process, so the combustion of boilers has attracted much attention. During the combustion process, the concentration and flow rate of the primary air pulverized coal play a very important role in the safe and stable operation of the boiler. Center deviation and other problems, which will cause local coking and high temperature corrosion of the boiler, and even cause the boiler to extinguish the fire. In order to ensure the efficient and safe operation of the boiler, the air powder online monitoring technology is usually used to realize the conditions for the air powder concentration. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/00F23N3/00
CPCF23N3/00F23N2900/05001F23N2223/44F23N2235/02F23N2237/16F23N2239/02
Inventor 苏胜王中辉向军胡松汪一徐俊任强强吴运凯江紫薇
Owner HUAZHONG UNIV OF SCI & TECH
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