A method, system and database for boiler combustion optimization based on CO detection

Abstract

The invention provides a CO detection based boiler combustion optimizing method and system as well as a database. The method comprises the following steps: obtaining first characteristic parameters, and obtaining boiler efficiency and a first characteristic curve according to the first characteristic parameters and a boiler efficiency calculating model; obtaining nitric oxide concentration in a boiler tail flue and a second characteristic curve; obtaining second characteristic parameters, obtaining comprehensive cost according to the second characteristic parameters, a comprehensive cost calculating model as well as a first characteristic curve and a second characteristic curve as well as a third characteristic curve; obtaining optimal carbon monoxide concentration according to the first characteristic curve, the second characteristic curve and the third characteristic curve, and storing the optimal carbon monoxide concentration into an optimized data base; and obtaining real-time carbon monoxide concentration, and regulating real-time carbon monoxide concentration through head air pressure of an air feeder according to the optimal carbon monoxide concentration in the optimized database. The CO detection based boiler combustion optimizing method avoids the problem that combustion regulation is affected as flue air leakage greatly affects O2 amount measuring results.

Description

technical field [0001] The invention relates to the field of boiler combustion, in particular to a CO detection-based boiler combustion optimization method, system and database. Background technique [0002] Coal occupies about 60% of my country's primary energy power generation, and occupies an irreplaceable position in social production. The main form of coal power generation is through combustion in boilers. Although pulverized coal combustion technology in boilers is quite mature, there are still problems such as low combustion efficiency and unbalanced NOx emissions. These are related to the combustion conditions in boilers. Moreover, the combustion conditions in the furnace are directly related to the production capacity of the boiler and the reliability of the production process, and to a large extent determine the economy and environmental protection of the boiler operation. Therefore, the optimal adjustment and control of combustion is extremely important in the adj...

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Problems solved by technology

However, due to the prevalence of flue air leakage, the O 2 The quantity measurement results have a great influence, which leads to a large deviation in the judgment of the overall combustion status of the boiler, which is not conducive to the control of the concentration of flue gas NOx, and O 2 The error of the amount will greatly affect the calculation of the excess air coefficient and the judgment of the heat loss of the exhaust gas, thereby affecting the combustion adjustment and thus affecting the boiler efficiency

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