Heating furnace temperature control method based on simulation model

Abstract

The invention relates to the technical field of control over metallurgical heating furnaces and discloses a heating furnace temperature control method based on a simulation model. The heating furnace temperature control method based on the simulation model comprises the following steps that (1) mechanism modeling is carried out according to the principle of heat convection inside a heating furnace, and a steel billet temperature change model is created; (2) the final discharging billet temperature of each single steel billet is worked out based on the steel billet temperature change model of the step (1), and compared with the set discharging billet temperature, and the adjustment quantities of each single steel billet for the furnace temperature set values of different heating sections are finally determined according to the self-optimization function of a steel billet temperature compensation module; (3) through combination of the quantity and types of the steel billets in each heating section and the feeding billet temperature of each steel billet with the weight coefficients of the different types of steel billets, a steel billet gathering module works out the final adjustment quantity of the furnace temperature set point of each heating section, and outputs the final adjustment quantity to an actuating mechanism; and (4) related parameters in the simulation model are adjusted according to the deviation between the actual discharging billet temperature and the set value, and accordingly the whole simulation model achieves the real-time online function.

Description

technical field [0001] The invention relates to the field of metallurgical heating furnace control, in particular to a method for controlling the temperature of a heating furnace based on a simulation model. Background technique [0002] In the metallurgical industry, a heating furnace is a device that heats a metal billet to the temperature of rolling to forging. The heating furnace is the main energy-consuming equipment in metallurgical iron and steel. It uses the heat generated by the combustion of fuel in the furnace to heat the steel billet walking in the furnace. This process is required to precisely control the temperature of the billet out of the furnace, the least energy consumption, and the lowest oxidation and burning loss of the billet. In the metallurgical heating furnace control technology, in order to meet the temperature of the billet out of the furnace to meet the requirements of the steel rolling process, the temperature of each heating section in the furn...

AI Technical Summary

Problems solved by technology

However, in the current production situation, there are many kinds of steel billets mixed into the furnace, and the temperature difference of the steel billets is unstable. This method requires large data storage, search and analysis, and the calculation results change drastically, which directly leads to unstable control and affects the operation of the heating furnace.

[0004] To sum up, there are still complex systems, lack of measurands, difficulty in modeling, and poor accuracy of furnace temperature setting in the aspect of furnace temperature control. The existing technology still has limitations, and it is difficult to popularize and apply it in actual production.

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