Air distribution control method, system and related equipment of pulverized coal boiler

Abstract

The embodiment of the invention provides an air distribution control method, system and related equipment of a pulverized coal boiler, which is used for improving the air distribution control precision of the pulverized coal boiler, improving the combustion efficiency and saving energy. The method comprises the following steps that parameter setting instructions are received, the parameter settinginstructions comprise input parameters and output parameters, and the input parameters at least comprise the opening degree of a secondary air door; the statistical values of the input parameters andthe output parameters in different statistical periods are extracted from a database to obtain a plurality of samples, wherein the statistical values of the input parameters and the output parametersin the same statistical period form a sample; the plurality of samples are input into a preset artificial network model for training to obtain a mapping relation between the input parameters and theoutput parameters; an optimal value combination of the opening degree of the secondary air door in the input parameters is calculated by adopting a preset optimization algorithm and the mapping relation; and the opening degree of the secondary air door is controlled according to the optimal value combination of the opening degree of the secondary air door.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, in particular to an air distribution control method, system and related equipment for a pulverized coal boiler. Background technique [0002] Pulverized coal boiler is a boiler equipment fueled by pulverized coal. The boiler equipment is usually equipped with dozens of pulverized coal burners, and equipped with primary and secondary air distribution devices. Among them, the main function of the primary air is to transport coal. Powder into the furnace and ensure the ignition of volatile matter. The role of secondary air supplements the amount of air required for combustion to ensure complete combustion of fuel. The pulverized coal is conveyed by the primary air through the burner into the furnace, and the secondary air is introduced into the furnace through the secondary air annular duct of the burner or the secondary air damper adjacent to the burner nozzle. Rapid, complete, l...

AI Technical Summary

Problems solved by technology

In the existing method, the accuracy of the ratio of the secondary air cannot be guaranteed by using artificial experiments or relying on empirical values

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