Method of Modeling and Coordinated Optimal Control of Hybrid System of Blast Furnace Hot Blast Stove

Abstract

The invention discloses a method for hybrid system modeling and coordinated optimization control of a blast-furnace hot blast stove. The method includes the steps of using subspace identification for respectively obtaining a combustion period model and an air supply period model of the blast-furnace hot blast stove so that process conditions can be effectively reflected, integrating the combustion model and the air supply model, establishing a hybrid system model based on a mixed logical dynamical method and finally realizing the coordinated optimization control of the blast-furnace hot blast stove by the use of a predictive control for the hybrid system. The method has the significant advantages of more closely reflecting the working cycle of the hot blast stove, more reasonably controlling the air supply quality of the hot blast stove and having strong adaptability. Furthermore, the method has the good effects on guaranteeing stable production and safe operation of the blast furnace, improving the smelting quality of the blast furnace, saving gas resource consumption, and the like. And thus, the method has better economic and social benefits.

Description

technical field [0001] The invention relates to energy and power engineering technology, in particular to a modeling and coordination optimization control method for a hybrid system of a blast furnace hot blast stove. Background technique [0002] The iron and steel industry is one of the most important basic industries in the national economy. It involves a wide range of industries, has a high degree of industrial correlation, and is strongly driven by consumption. It plays an important role in economic construction, social development, national defense construction, fiscal taxation, and stable employment. Steel has always been known as industrial food. It has been the main structural material used by humans since the Industrial Revolution. Its development is closely related to the progress of human civilization. Therefore, the production capacity and consumption level of steel are important indicators to measure a country's economic level and comprehensive national strengt...

AI Technical Summary

Problems solved by technology

[0007] However, the current technology and research methods separate the combustion period of the blast furnace hot blast stove from the blast period, and tend to study the characteristics of a single hot blast stove, ignoring the connection between the two working stages of the hot blast stove and the hot blast composed of several hot blast stoves. The integrity of the furnace system affects the improvement of the work efficiency of the hot blast furnace, resulting in energy consumption

Images