Combustion optimization method based on coal quality on-line monitoring

Abstract

The invention discloses a combustion optimization method based on coal quality on-line monitoring. The method comprises a coal quality on-line monitoring method, an operation optimization method of apulverizing system based on coal quality on-line monitoring, a refined air distribution optimization method based on coal quality on-line monitoring, and a flue gas oxygen content optimization methodbased on coal quality on-line monitoring. Pulverizing system optimization realizes real-time optimization of the coal mill coal-air ratio, refined air distribution optimization realizes matching optimization of secondary air volume and burnout air volume of all burners, and fuel gas oxygen content optimization realizes total volume optimization. The combustion optimization method can adapt to thechange of coal quality and load to carry out dynamic real-time optimization, the boiler efficiency is effectively improved, and the emission of pollutants NOx is reduced.

Description

Technical field: [0001] The invention relates to a combustion optimization method based on coal quality on-line monitoring, in particular to the technical field of combustion optimization control technology for boilers of coal-fired power generation units. Background technique: [0002] Coal-fired thermal power generation units due to variable loads and coal types make the boiler combustion deviate from the designed coal type. Traditional boiler coordinated control optimization often cannot adapt to changes in coal quality, making the primary air rate and secondary air rate of the boiler operation , Ember wind rate, oxygen control, etc. have deviated from the optimal operating conditions. At present, the primary air rate, secondary air rate, and embers air volume rate are mainly adjusted manually by operating personnel based on experience. When the coal quality deviates greatly, problems such as frequent overheating of the water wall, slagging and burning of the burner nozz...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a combustion optimization method based on coal quality online monitoring, which solves the problems of reduced boiler efficiency and increased pollutant N

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