Intelligent monitoring system monitoring hearth erosion condition based on furnace shell temperature measuring

Abstract

The invention discloses an intelligent monitoring and pre-warning system for blast furnace hearth erosion based on the furnace shell temperature and belongs to the field of blast furnace monitoring. According to the system, detecting data such as the furnace shell measured temperature and water temperature difference are utilized; a complete energy conservation system including a protecting layer, a furnace lining, a filling, a cooling wall body, a water-cooling pipe and the furnace shell is built; three-dimensional refined modeling is conducted according to the actual size to achieve refined calculation of a temperature field; combining temperature filed calculation, the hearth erosion condition is obtained through inverse problem calculation, and dynamic simulation of the erosion and thickening process is achieved; and a complete three-dimensional temperature field, a cooling water flow field, a furnace shell face temperature field and a cooling wall body temperature field are showed with intuitive images and data, a furnace shell temperature on-line pre-warning function and a hearth erosion monitoring function are achieved, and hearth erosion on-line monitoring warning based on furnace shell temperature measuring is achieved. According to the system, a novel method of monitoring the erosion condition of the furnace lining is provided, it is beneficial to guiding industrial production, and the long service life of a blast furnace is achieved.

Description

technical field [0001] The invention belongs to the field of blast furnace monitoring, and in particular provides a method for simulating and monitoring furnace hearth erosion based on furnace shell temperature measurement. The invention realizes the calculation of the temperature field under different hearth remaining thicknesses by establishing a three-dimensional refined model, calculates the corrosion thickness of the furnace shell by using the inverse problem of the furnace shell temperature, realizes the dynamic simulation of the process of erosion and knot thickness, and proposes a method for blast furnace A new method for online monitoring and early warning of hearth bottom erosion. Background technique [0002] The current monitoring methods for blast furnace hearth are divided into direct measurement method and indirect measurement method. In the above measurement methods, there are two factors that affect the accuracy of the data: the accuracy of the data source ...

AI Technical Summary

Problems solved by technology

The heat flow detection method requires a lot of equipment. The biggest problem with the shock echo method is that if there are large cracks or gaps inside the furnace wall, the stress wave may not pass through and cause misjudgment.

[0005] Most of the currently established mathematical models simplify the heat transfer model of the hearth and bottom of the blast furnace, which is quite different from the actual state, and lacks detailed consideration of the actual production state of the blast furnace

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