Soot blowing control method and system, medium and equipment

Abstract

The invention relates to a soot blowing control method and system, a medium and equipment, and the method comprises the steps: calculating the overall cleaning factor of an overall heating surface ina boiler flue and the local cleaning factor of each local heating surface of the overall heating surface according to collected boiler operation parameters; controlling the action of the soot blower corresponding to the overall heating surface according to the overall cleaning factor; and controlling the action of the soot blower corresponding to the corresponding local heating surface according to the local cleaning factor. On the basis that soot blowing is conducted on the overall heating surface based on the overall cleaning factor, local soot blowing as required under the condition that soot accumulation on the local heating surface is serious is achieved according to the established local cleaning factor, soot blowing cost is reduced, and meanwhile the phenomenon that soot is blown tothe heating surface due to excessive soot blowing is prevented.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a soot blowing control method, system, medium and equipment. Background technique [0002] The harm of ash slagging in the heating area of ​​boilers has been paid attention by many scientific research workers and power production units at home and abroad. At present, advanced soot blowing equipment has been installed in large coal-fired power plant boilers. The current soot blowing system adopts an overall soot blowing strategy based on the experience of operating personnel, that is, the overall soot blowing characteristics of the heating surface The parameters set a limit value. When the characteristic parameters of the overall dust pollution on the heating surface exceed the limit value, the overall soot blowing will be carried out on the heating surface. At present, the main means of characterization of the degree of dust pollution on the heating surface are dust thermal resis...

AI Technical Summary

Problems solved by technology

At present, advanced soot blowing equipment has been installed in large coal-fired power plant boilers. The current soot blowing system adopts an overall soot blowing strategy based on the experience of operating personnel, that is, the overall soot blowing characteristics of the heating surface The parameters set a limit value. When the characteristic parameters of the overall dust pollution on the heating surface exceed the limit value, the overall soot blowing will be carried out on the heating surface. At present, the main means of characterization of the degree of dust pollution on the heating surface are dust thermal resistance, heat transfer effectiveness ratio, Cleaning factor, etc., of which the cleaning factor is the most widely used, its principle is to measure the actual heat absorption of the heating surface, and then find a way to obtain the heat absorption of the heating surface when the same working condition is cleaned, and use the actual heat absorption and the same working condition Compared with the cleaning heat absorption under the condition, to reflect the degree of soot on the heating surface, when it exceeds the limit value, start the soot blower to sweep the heating surface as a whole, the energy consumption of soot blowing in this soot blowing control method The cost is high, and it is easy to cause blowing damage to the heating surface due to excessive soot blowing

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