Control method for balancing sintering air volume

Abstract

The invention discloses a control method for balancing the sintering air volume. The control method specifically comprises the following steps: S1, determining the fuzzy judgment condition of a wind resistance sudden change based on historical data of air bellows; S2, detecting a current wind resistance sudden change starting position and a current wind resistance sudden change ending position inreal time based on the fuzzy judgment condition of the wind resistance sudden change; and S3, adjusting the opening degree of butterfly valves of the air bellows in real time based on the changed windresistance sudden change starting position and the changed wind resistance sudden change ending position. By automatically tracking the wind resistance sudden change position, the opening degree of the butterfly valve of each air bellow is dynamically adjusted in real time, that is to say, the air volume of each air bellow is dynamically adjusted in real time, the redox atmosphere of the sintering process in each air bellow is stabilized, the heat dissipation speed of a high-temperature area is controlled, invalid ventilation is reduced, and the balance control over the sintering process in the running direction of a trolley is achieved.

Description

technical field [0001] The invention belongs to the technical field of sintering production, and more particularly, the invention relates to a control method for balancing the air volume of sintering. Background technique [0002] The central link of sintering production in the iron and steel industry is sintering. The drafted sintering process is carried out from top to bottom, with obvious layering; from the ignition, the sintered ore layer, the combustion layer, the preheating layer, the drying layer and the over-wet layer will appear in sequence, and then disappear in turn, and finally all become sintered ore bed. Among them, the air permeability of the wet layer is poor, and the air permeability of the combustion layer is the worst. The disappearance of the changes of these two layers will greatly change the local wind resistance, which will affect the negative pressure and air volume of the main pipe, thereby affecting the entire sintering process. [0003] The size...

AI Technical Summary

Problems solved by technology

The change and disappearance of these two layers will greatly change the local wind resistance, affect the negative pressure and air volume of the main pipe, and thus affect the entire sintering process

[0003] The size of the sintering air volume has an important impact on the oxidation-reduction environment of the sintering process. The temperature in the high-temperature zone has a great influence on the sintering mechanical strength, and the economical use of the main exhaust air volume has great economic benefits; the traditional sintering bellows control is to stabilize the sintering The end position is the main control purpose. This method is not sensitive to the effective utilization rate of the main exhaust air volume. The oxidizing atmosphere in the sintering process is strong, and more heat is taken away in the high temperature zone.

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