A method and system for predicting the center zone temperature of a blast furnace throat cross temperature measuring device

Abstract

The invention provides a method and system for predicting a central zone temperature of a cross temperature measurement device of a blast furnace throat. The method comprises the steps that a course variable of a blast furnace throat temperature related to the central zone temperature of the cross temperature measurement device of the blast furnace throat is collected; the collected course variable is pre-processed, and noise peak jumping data and high-frequency noise data are removed; and a central zone temperature prediction model is used to predict the central zone temperature of the cross temperature measurement device of the blast furnace throat. The system comprises a collection module, a pre-processing module and a prediction module. According to the invention, input and output historical data selected by the prediction model of the central zone temperature is used to predict future central zone temperature output of the cross temperature measurement device; relations between the temperature output and control input can be expressed accurately; when a central temperature sensor of the cross temperature measurement device needs to be repaired or is damaged, a basis can be provided for a blast furnace operator to make accurate judgments and adjust systems of upper and lower parts of a blast furnace in time; and further, steady, efficiency and safe running of the blast furnace can be implemented.

Description

technical field [0001] The invention belongs to the technical field of blast furnace temperature monitoring, in particular to a temperature prediction method and system for a center zone of a blast furnace throat cross temperature measuring device. Background technique [0002] As the most important basic raw material used by human society and the functional material with the largest annual output, steel is widely used in various industries such as transportation, machinery manufacturing, construction and military development. Blast furnace ironmaking is an important process in the iron and steel industry. Ensuring the high efficiency, safety and stability of blast furnace ironmaking plays an important role in the sustainable and healthy development of the iron and steel industry and in reducing energy consumption. Since blast furnace smelting is a complex physical and chemical reaction process with various material forms, realizing its automatic control has always been a sc...

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Problems solved by technology

[0004] However, the temperature in the center of the blast furnace cross temperature measuring device is higher than other temperature measuring points, the sensor is easily damaged and the replacement cycle is long, so it is impossible to monitor the gas temperature in the furnace in time, which affects the blast furnace operator's judgment of the gas distribution, resulting in the inability to timely and accurately Adjust the blast furnace operation system such as material distribution and blast, and then affect the smooth operation of the blast furnace

On the one hand, due to the complex, multi-variable and multi-time-lag characteristics of the blast furnace, it is very difficult to establish an accurate temperature mechanism model of the cross-measuring point

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