The modeling and control of a reheating furnace

Author

Zhang, Bin ; Chen, Zhigang ; Xu, Liyun ; Wang, Jingcheng ; Zhang, Jianmin ; Shao, Huihe

Author_Institution

Dept. of Autom., Shanghai Jiao Tong Univ., China

Volume

5

fYear

2002

fDate

2002

Firstpage

3823

Abstract

A model of a walking-beam reheating furnace is constructed. The model consists of three sub-models, automatic combustion control model (ACC), dynamic model of the combustion process, and control loops model. The ACC model calculates the setpoints of furnace temperature such that the slabs in the furnace can be heated to discharging temperature. A dynamic model, which is mainly discussed in the paper, describes the behavior of the furnace under the state of rolling line and fuel flux provided by the control loop model. The control loop model, or distributed control system model control the fuel flux of each zone according to setpoints of furnace temperature and state of the furnace. The structure of the model is discussed in detail in the paper. The numerical examples show the validity of the model. The model can be used to develop new energy-saving techniques, or to realize quality optimization etc.

Keywords

combustion; distributed parameter systems; furnaces; steel industry; step response; temperature control; three-term control; automatic combustion control model; combustion process; control loops model; discharging temperature; distributed control system model; dynamic model; energy-saving techniques; fuel flux; furnace temperature; rolling line; setpoints; steel plants; walking-beam reheating furnace; Automatic control; Automation; Combustion; Distributed control; Fuels; Furnaces; Heating; Slabs; Tail; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2002. Proceedings of the 2002

ISSN

0743-1619

Print_ISBN

0-7803-7298-0

Type

conf

DOI

10.1109/ACC.2002.1024524

Filename

1024524